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WO2011022937A1 - Unité d’excitation de réseau en t et procédé de commande associé - Google Patents

Unité d’excitation de réseau en t et procédé de commande associé Download PDF

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Publication number
WO2011022937A1
WO2011022937A1 PCT/CN2010/001273 CN2010001273W WO2011022937A1 WO 2011022937 A1 WO2011022937 A1 WO 2011022937A1 CN 2010001273 W CN2010001273 W CN 2010001273W WO 2011022937 A1 WO2011022937 A1 WO 2011022937A1
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Prior art keywords
module
signal
energy conversion
sub
gas discharge
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English (en)
Chinese (zh)
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王绿沙
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/2881—Load circuits; Control thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Definitions

  • the invention relates to a novel gas discharge lamp driving device principle and a control method thereof, in particular to a high-intensity gas discharge lamp device principle and a control method thereof.
  • Fluorescent lamps are a large class of gas discharge lamps; more electricity is used in high-intensity discharge lamps, including three major categories of products, high pressure sodium lamps, metal halide lamps and high pressure mercury lamps.
  • the interior of the high-intensity discharge lamp is mainly a discharge tube, that is, an arc tube, which is made of a transparent or translucent material, and has closed electrodes at both ends, and the discharge tube is filled with an inert gas and metal vapor.
  • the high-pressure gas discharge lamp emits light mainly from metal gas or mixed metal gas.
  • the inert gas can greatly increase the number of times of electron and metal gas atom elastic collision ionization. Appropriate increase of air pressure can increase the number of collision ionization and improve luminous efficiency.
  • a prior art high pressure gas discharge lamp illumination system includes a ballast made of an inductive device in series with the high pressure gas discharge lamp and a trigger connected in parallel across the high pressure gas discharge lamp, as shown in FIG.
  • the gas discharge illuminating of the high-pressure gas discharge lamp requires a high-voltage breakdown condition, that is, an ignition voltage condition, and the instantaneous on-off action of the trigger causes a self-induced electromotive force of 1-5 kV at the end of the ballast coil to be applied to both ends of the discharge tube.
  • the free electrons of the electrode obtain sufficient kinetic energy to impinge on gas atomization and quickly avalanche ionization to form sufficient stable discharge luminescence; at the beginning of the ignition success, the high-pressure gas discharge lamp is short-circuited, requiring a ballast to limit activation Short-circuit current; in AC power supply, the two electrodes of the discharge tube are alternately converted into an anode and a cathode, and the current is zero or approximately zero during a period of time at the junction of the positive and negative half cycles of the current. The time is called the extinction time text. As shown in Fig.
  • the ballast in order to reduce the extinction time or prevent complete flameout, the ballast is required to supply the lamp with a voltage higher than the power supply, that is, the ignition voltage is repeated. Therefore, the ballast functions to generate ignition high voltage, limit start-up short-circuit current, and repeat ignition.
  • a high-pressure gas discharge lamp When a high-pressure gas discharge lamp is ignited, there is an arc discharge that emits light from a small current to an arc discharge of a large current and strong light.
  • the transition process In this process, cathode sputtering and rectification effects are produced.
  • the cathode sputtering means that some of the metal particles are splashed from the surface of the cathode and adhere to the parts near the cathode and the glass shell due to the strong bombardment of the cathode by positive ions or the like, so that the lower part of the tube is blackened, which affects the luminous efficiency; Sputtering occurs in the short transition period from glow discharge to high current arc discharge. If the ignition voltage is not high enough, the electric field energy is not enough, the glow discharge process will be prolonged; and if the ignition voltage energy is too large, the positive particles will bombard the cathode. The acceleration will be larger, making the sputtering more serious.
  • the rectification effect mainly occurs during the startup process, and the lamp current is not equal in the positive and negative half cycles, and the rectification effect of the severe severe distortion occurs.
  • the waveform is as shown in FIG. 10, and the rectification effect is because the two electrodes are The gradual loss caused by the imbalance of the ability to emit electrons, showing the current suddenly fluctuating and violently impacting, and finally tends to ease the peace with time.
  • the cathode sputtering and rectification effects are important reasons for affecting luminous efficiency and lifetime.
  • start-up shock and soft start An important attribute of the inductive circuit gas discharge lamp is that the lamp immediately changes from high impedance to short circuit after the ignition succeeds. The supply voltage is almost entirely applied to the ballast, and the lamp current instantaneously increases. Impact on the lamp. This feature severely affects the life of the lamp and ballast. Therefore, there is a need to use a soft-start method to reduce the startup current surge, weaken the rectification effect, and reduce electrode losses.
  • the soft start refers to the process in which the high-pressure gas discharge lamp ignites from the glow to the arc discharge, and the supply voltage immediately drops when the arc current begins to increase rapidly, and then gradually rises. However, it is not possible to implement a soft start ignition mode with prior art magnetic ballasts.
  • the prior art generally adopts a series inductive anti-bucking method in the main circuit of the lamp, as shown in FIG. 11, wherein the single-stage series method has a great impact on the lamp because the one-time step-down span is too large. Even the lamp is completely turned off; the multi-level inductive anti-dimming in the series has a switching power-off problem, and when one of the switching switches is not normally released, the inductive coil is immediately partially burned. Therefore, whether using the same core winding or using independent core winding is not suitable for series multi-stage inductive dimming, and it is not suitable for voltage regulation control.
  • This method is based on the CW constant power ballast with series thermal capacitor step-down dimming.
  • Inductive ballast gas discharge lamp line power factor is not high, there are reactive power compensation problems, but also bring a lot of harmonic pollution.
  • the three-phase power transformer can absorb most of the 3rd harmonics, but the absorption of more than 5 harmonics is not obvious; the management department can also use the existing power active filter to eliminate these harmonics, but the current mature power is active. Filter products are expensive and inconvenient for maintenance management. They are rarely used in low-voltage power distribution, and poor quality active filters will increase harmonics.
  • the system of the high-intensity gas discharge lamp needs to solve the five problems of bootstrap ignition, repeated bootstrap ignition, soft start, voltage regulation and voltage regulation, and reactive power compensation and harmonic suppression. Solve major problems such as light efficiency, longevity and energy saving. Summary of the invention
  • the technical problem to be solved by the present invention is to avoid the deficiencies of the prior art and propose a topology ⁇ type network driver principle and method for solving the bootstrap ignition, repeated bootstrap ignition, soft start of the prior art gas discharge lamp system. , regulation and regulation dimming and reactive power compensation and harmonic suppression are the five major problems.
  • the topological T-type network driving device for driving a gas discharge lamp, wherein the topological T-type network driving device (100) is electrically connected to the gas discharge lamp (10) and an alternating current power supply (V N )
  • the topological T-type network driving module (30) and the energy conversion control module (60) are included; the energy conversion control module (60) is configured according to the collected electrical signals to the topological T-type network driving module (30)
  • the topological T-type network driving module (30) includes an energy conversion inductor (L1), an energy conversion capacitor (50), a ballast inductor (L2), and the gas discharge lamp (10), respectively a first output terminal (OUT1) and a second output terminal (OUT2) electrically connected to the terminal, and two input terminals (IN1, IN2) respectively electrically connected to an output terminal of the AC power supply (V N );
  • One end of each of the ballast inductor (L2), the energy conversion inductor (L1), and the energy conversion capacitor (50) is electrically
  • the energy conversion capacitor (50) includes n base capacitors (Co) and capacitors (CI Cn) connected in parallel between the first node and the second node (b), and series capacitors (CI Cn) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) includes a signal acquisition sub-module (61), a signal comparison analyzer a module (62) and a driving signal sub-module (63);
  • the signal collecting sub-module (61) collects an electrical signal from the power supply (V N ) and the first node) and transmits the electrical signal to the signal comparison analyzer Module (62);
  • the signal comparison analysis sub-module (62) compares the collected electrical signals and Analysis, and the control signal of the parallel branch where the capacitors (CI, ..., Cn) are closed or disconnected is sent to the driving signal sub-module (63) in time series;
  • the driving signal sub-module (63) is based on the control signal To the corresponding controlled switching
  • the n controlled switching devices are n bidirectional thyristors (Q1 Qn); the bidirectional thyristors (Q1 Qn) are electrically connected to parallel branches of respective respective capacitors (CI Cn), the bidirectional The respective gates (gl gn) of the thyristors (Q1 Qn) are electrically connected to the drive signal sub-modules (63), respectively.
  • the n controlled switching devices are n relays (J1, ..., Jn); the respective relays (J1, ...,
  • n controlled switching devices are slide switches having n stationary contacts (HI Hn) and one moving contact (D); respective stationary contacts (HI Hn) of the slider switch Electrically connected to their respective capacitors
  • the moving contact (D) of the slide switch is connected to the output shaft of the drive motor (M), the control end of the drive motor (M) and the drive signal sub-module (63) electrical connection, the drive signal sub-module (63) output command controls the drive motor (M) to rotate by a specified angle, thereby electrically connecting the movable contact (D) with the corresponding static electric shock (Hl, ..., Hn) .
  • the signal acquisition sub-module (61) includes a signal detection sub-module (611) and a harmonic detection sub-module (612); the signal detection sub-module (611) pairs the supply voltage, the voltage and the node (a) a gas discharge lamp (10) current sampling; the signal comparison analysis sub-module (62) includes a micro control unit (621) and a comparator (622, 623) electrically coupled to the micro control unit (621); The electrical signal collected by the acquisition sub-module (61) is input to the micro control unit (621) and the comparators (622, 623); the micro control unit (621) is clocked to the drive signal sub-module (63) by signal analysis processing. Output control signals.
  • the energy conversion inductor (L1), the energy conversion capacitor (50), and the energy conversion control module (60) are mounted inside the same housing, and the ballast inductance (L2) is separately mounted outside the housing.
  • the energy conversion capacitor (50) and the energy conversion control module (60) are mounted in the same housing, and the energy conversion inductor (L1) and the ballast inductor (L2) are separately mounted in another housing. Failure to solve the technical problem described above can also be achieved by adopting the following technical solutions:
  • a method of dynamically adjusting a gas discharge lamp comprising the steps of:
  • the other ends of the ballast inductor (L2) are respectively electrically connected to both ends of the gas discharge lamp (10), and the other end of the energy conversion capacitor (50) and the other end of the energy conversion inductor (L1) are respectively Electrically connected to both ends of the AC power supply (V N ); thereby forming a T-type network drive module (30);
  • the energy conversion control module (60) compares the collected electrical signals with a user-set program, and performs an adjustment control on the equivalent capacitance value of the energy conversion capacitor (50).
  • the gas discharge lamp (10) is dynamically adjusted to adjust the energy distribution within the T-type network drive module (30).
  • the step A also includes the following sub-steps,
  • A1 Using a base capacitor (Co) and n capacitors (CI Cn) connected in parallel between the first node (a) and the second node (b), and a parallel branch in series with each capacitor (CI Cn) n controlled switching devices (Kl Kn) for controlling the switching of the respective branches to manufacture the energy conversion capacitor (50);
  • the energy conversion inductor (L1) and the ballast inductor (L2) adopt an inductive coil of a fixed inductance value that is not magnetically coupled to each other;
  • the step C further includes the following sub-steps,
  • the step D further includes the following sub-steps,
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node (a), and the lamp current collection module, and transmits the electrical signal to the signal comparison analysis sub-module ( 62);
  • the signal comparison analysis sub-module (62) issues a closed and/or open controlled switching device to the drive signal sub-module (63) according to the electrical signal collected in step B1 and according to a program set by the user (Kl Kn Drive signal;
  • the driving signal sub-module (63) controls each of the corresponding controlled switching devices (Kl Kn) to be sequentially closed and/or disconnected according to the received driving signal, so that the parallel branches of the respective capacitors (CI Cn) are connected. Tonghe / Or disconnected to adjust the equivalent capacitance value of the energy conversion capacitor (50) to dynamically adjust the gas discharge lamp (10).
  • the technical problem of the present invention can be achieved by adopting the following technical solutions:
  • the energy conversion control module (60) determines whether the gas discharge lamp (10) is successfully ignited according to the collected electrical signal; if the gas dare light (10) is successfully ignited, the completion Autonomous boost ignition; if the gas discharge lamp (10) ignition is unsuccessful, step C is performed;
  • step B the method further includes the step of determining whether the gas discharge lamp (10) is damaged or malfunctioning. , which is
  • the energy conversion control module (60) determines whether the gas discharge lamp (10) is successfully ignited based on the collected electrical signals;
  • the energy conversion control module (60) determines whether the gas discharge lamp is damaged or malfunctions according to the collected electrical signal
  • performing the energy conversion capacitor (50) of the step ⁇ includes n basic capacitors connected in parallel between the first node and the second node (b) ( Co) and a capacitor (CI Cn), and n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in series with the parallel branch of each capacitor (CI Cn);
  • the control module (60) includes a signal acquisition sub-module (61), a signal comparison analysis sub-module (62), and a drive signal sub-module (63);
  • step A includes the following sub-steps:
  • the signal comparison analysis sub-module (62) sets an equivalent capacitance value of the energy conversion capacitor (50) according to a preset ignition voltage requirement
  • the step B further includes the following sub-steps, Bl.
  • the signal collection sub-module (61) collects an electrical signal from the power supply (V N ), the first node (a), and the lamp current acquisition module and transmits the electrical signal to the signal comparison analysis sub-module (62).
  • the signal comparison analysis sub-module (62) compares and analyzes the electrical signals collected by the chirp, and determines whether the gas discharge lamp (10) is successfully ignited;
  • step C1 If the gas discharge lamp (10) is not successfully ignited, perform the following step C1;
  • the signal comparison analysis sub-module (62) sends a drive signal to the drive signal sub-module (63) to close the corresponding controlled switch device (K1 Kn);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • the energy conversion control module (60) determines that the voltage equivalent of the first node (a) is less than a preset ignition voltage equivalent according to the collected electrical signal, performing Step B; the ignition voltage equivalent is a minimum voltage condition that should be satisfied at the first node (a) when the gas discharge lamp (10) can be illuminated;
  • the energy conversion control module (60) increases the effective capacitance value of the energy conversion capacitor (50), increases the voltage of the first node ( a ), and returns to step 8.
  • the energy conversion capacitor (50) includes n base capacitors (Co) and capacitors (CI Cn) connected in parallel between the first node (a) and the second node (b), and series capacitors (CI) Cn) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) comprises a signal acquisition sub-module (61), signal comparison An analysis sub-module (62) and a drive signal sub-module (63);
  • the step A includes the following sub-steps -.
  • the signal acquisition sub-module (61) detects the voltage of the first node in real time, and sends the real-time detected first node (a) voltage to the signal comparison analysis sub-module (62), when the signal is compared and analyzed.
  • the sub-module (62) determines that the first node (a) voltage detected in real time is less than a preset ignition voltage equivalent, and performs step B1;
  • the signal comparison analysis sub-module (62) sends a driving signal for closing the corresponding controlled switching device (K1 Kn) to the driving signal sub-module (63);
  • the driving signal sub-module (63) controls each of the corresponding controlled switching devices according to the received driving signal (K1, ..., Kn) is closed, so that the parallel branch of the corresponding capacitor (CI, ..., Cn) is turned on, thereby increasing the equivalent capacitance value of the energy conversion capacitor (50), causing the voltage of the first node to increase, returning Step Al.
  • the technical problem solved by the present invention can be achieved by using the following technical solutions:
  • a soft start method for a gas discharge lamp based on the topological T-type network driving device according to claim 1, for the ignition of the gas discharge lamp (10) to a normal lighting process, characterized in that the following steps are included :
  • the energy conversion control module (60) increases an effective capacitance value of the energy conversion capacitor (50) to increase a voltage of the first node (a); and the ignition voltage equivalent is capable of illuminating the gas discharge lamp (10), the minimum voltage condition that should be satisfied at the first node (a);
  • the energy conversion control module (60) determines, according to the collected electrical signal, whether the voltage of the first node is up to a preset normal value; if the voltage of the first node does not reach a preset normal value, returning Step A: If the voltage of the first node (a) reaches a preset normal value, the soft start of the gas discharge lamp is completed.
  • the energy conversion capacitor (50) includes n base capacitors ( ) and capacitors (CI Cn ) connected in parallel between the first node (a) and the second node (b), and series capacitors (CI Cn ) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) includes a signal acquisition sub-module (61), signal comparison analysis Submodule (62) and drive signal submodule (63);
  • step A includes the following sub-steps:
  • the signal comparison analysis sub-module (62) sends a drive signal to the drive signal sub-module (63) to close the corresponding controlled switch device (K1 Kn);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • the step B includes the following sub-steps,
  • the signal acquisition sub-module (61) detects the voltage of the first node (a) in real time, and sends the real-time detected first node (a) voltage to the signal comparison analysis sub-module (62);
  • the signal comparison analysis sub-module (62) determines that the real-time detected first node (a) voltage has not reached a preset normal value, and returns to step A1;
  • the signal comparison analysis sub-module (62) determines that the voltage of the first node (a) detected in real time reaches a preset normal value, and completes a soft start of the gas discharge lamp.
  • the energy conversion control module (60) compares the collected real-time electrical signal with the preset electrical signal, and when the real-time electrical signal does not reach the preset electrical signal, performs step C; when the real-time electrical signal reaches When the electrical signal is preset, the voltage regulation dimming is completed;
  • the energy conversion control module (60) adjusts the equivalent capacitance value of the energy conversion capacitor (50) according to the comparison result of the step B, and returns to the step (the energy conversion capacitor (50) includes n parallels in the A base capacitor (Co) and a capacitor (CI Cn) between a node (a) and a second node (b), and a series connection of the parallel branches of the capacitors (CI Cn) for controlling the switching of the respective branches n controlled switching devices (K1, ..., Kn); the energy conversion control module (60) comprises a signal acquisition sub-module (61), a signal comparison analysis sub-module (62) and a drive signal sub-module (63);
  • step B includes the following sub-steps:
  • the signal collection sub-module (61) collects an electrical signal from the power supply (V N ), the first node (a), and the lamp current acquisition module and transmits the electrical signal to the signal comparison analysis sub-module ( 62); the signal comparison analysis sub-module (62) compares and determines the collected electrical signal with a preset electrical signal;
  • step C1 When the real-time electrical signal does not reach the preset electrical signal, performing step C1; when the real-time electrical signal reaches the preset electrical signal, completing the voltage regulation dimming;
  • the signal comparison analysis sub-module (62) sends a driving signal for closing the corresponding controlled switching device (Kl Kn) to the driving signal sub-module (63);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • a method for reactive power compensation and harmonic suppression of a gas discharge lamp in the process of normal lighting of the gas discharge lamp (10), characterized in that Including the following steps:
  • the energy conversion control module (60) analyzes and determines reactive power and harmonic conditions according to the collected real-time electrical signal. When the reactive power and harmonic conditions do not meet the preset index, step B is performed; Reactive power and harmonics When the preset index is combined, the reactive power compensation and the suppression of the harmonics are completed;
  • the energy conversion control module (60) adjusts the equivalent capacitance value of the energy conversion capacitor (50) according to the comparison result of step A, and returns to step 8.
  • the energy conversion capacitor (50) includes n base capacitors (Co) and capacitors (CI Cn) connected in parallel between the first node (a) and the second node (b), and series capacitors (CI) Cn) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) comprises a signal acquisition sub-module (61), a signal comparison analysis sub-module (62) and a drive signal sub-module (63);
  • step A includes the following sub-steps:
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node) and the lamp current acquisition module and transmits the electrical signal to the signal comparison analysis sub-module (62);
  • the signal comparison analysis sub-module (62) compares and determines the current reactive power and harmonic conditions with the preset indicators according to the collected electrical signals;
  • step B1 When the reactive power and the harmonic condition do not meet the preset index, step B1 is performed; when the reactive power and the harmonic condition meet the preset index, the reactive power compensation and the suppression of the harmonic are completed;
  • the signal comparison analysis sub-module (62) sends a drive signal to the drive signal sub-module (63) to close the corresponding controlled switch device (K1 Kn);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • the function of the topological T-type network driving device comprising bootstrap ignition when the gas discharge lamp is lit, during the normal lighting of the gas discharge lamp Repeated bootstrap ignition, soft start during ignition of the gas discharge lamp to normal lighting, voltage regulation and voltage regulation during normal lighting of the gas discharge lamp, and completion of reactive power compensation during normal lighting of the gas discharge lamp Harmonic suppression.
  • the beneficial effects of the "a topology T-type network driving device principle and control method" of the present invention are as follows:
  • the invention solves the self-lifting ignition, repeated bootstrap ignition, soft start, voltage regulation and voltage regulation dimming, and reactive power compensation and harmonic suppression of the prior art gas discharge lamp system by dynamically adjusting the gas discharge lamp.
  • FIG. 1 is a schematic block diagram of a hardware principle of a "topology T-type network driving device principle and control method" of the present invention
  • FIG. 2 is a schematic block diagram of another hardware principle of the present invention
  • FIG. 3 is a schematic diagram of an electrical principle of a first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an electrical principle of a second embodiment of the present invention.
  • Figure 5 is a schematic diagram of an electrical principle of a third embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an electrical principle of a fourth embodiment of the present invention.
  • Figure 7 is a schematic diagram of functional modules of the first embodiment of the present invention.
  • Figure 8 is a schematic view of a prior art high intensity gas discharge lamp illumination system
  • FIG. 9 is a schematic waveform diagram of a prior art high-intensity gas discharge lamp
  • FIG. 10 is a schematic diagram of a rectification effect waveform of a prior art high-intensity gas discharge lamp
  • FIG. 11 is a schematic diagram of an electrical principle of a multi-period dimming control implemented by a prior art using a preset power ballast. detailed description
  • the present invention provides a topological T-type network driving device, as shown in FIG. 1, for driving a gas discharge lamp (10), and the topology T-type network driving device (100) is electrically connected to the gas discharge lamp ( 10) and the AC power supply (V N ), in particular, comprising a topology T-type network driving module (30) and an energy conversion control module (60); the energy conversion control module (60) is based on the collected electrical signal pairs
  • the energy conversion control in the topological T-type network driving module (30) is implemented;
  • the topological T-type network driving module (30) includes an energy conversion inductor (L1), an energy conversion capacitor (50), and a ballast inductor (L2), respectively a first output terminal (OUT1 of) the gas discharge lamp (10) is electrically connected to both ends and a second output terminal (OUT2), respectively, and the AC power supply (V N) is electrically connected to an output terminal of the two Input terminals (IN1, IN2); one end of each of the ballast inductor (L2), the
  • the T-type topology network driver module (30) further comprises a harmonic (L1) connected in parallel across the inductor of the energy conversion suppression capacitor (C S).
  • the energy conversion capacitor (50) includes n parallel connected to the first node and a second node.
  • the energy conversion control module (60) includes a signal collection sub-module (61), a signal comparison analysis sub-module (62), and a drive signal sub-module (63); the signal acquisition sub-module (61) Collecting an electrical signal from the power supply (V N ) and the first node (a) and transmitting the electrical signal to a signal comparison analysis sub-module (62); the signal comparison analysis sub-module (62) pairs the acquisition The incoming electrical signals are compared and analyzed, and the control signals of the parallel branches in which the capacitors (C1, ..., Cn) are closed or disconnected are sent to the drive signal sub-module (63) in time series; the drive signals are The module (63) issues a closed or open drive signal to the corresponding controlled switching device (K1 Kn) according to the control signal, thereby adjusting the
  • the n controlled switching devices are n bidirectional thyristors (Ql Qn); the respective bidirectional thyristors (Ql Qn) are electrically connected in parallel with respective corresponding capacitors (CI Cn).
  • respective gates of the two-way transistors Q1, ..., Qn are electrically connected to the driving signal sub-module (63), respectively.
  • the n controlled switching devices are n relays (J1 Jn); the relays U1 to Jn are respectively electrically connected to parallel branches of respective corresponding capacitors (CI Cn).
  • the respective excitation coils of the relays (J1 Jn) are electrically connected to the drive signal sub-module (63), respectively.
  • the n controlled switching devices (K1 Kn) are slide switches having n stationary contacts (HI Hn) and one movable contact (D); each of the slide switches
  • the contacts (HI Hn) are electrically connected to the parallel branches of the respective capacitors (Cl, ..., Cn), and the movable contacts (D) of the slider switches are connected to the output shaft of the driving motor (M).
  • the control end of the drive motor (M) is electrically connected to the drive signal sub-module (63), and the drive signal sub-module (63) outputs an instruction to control the drive motor (M) to rotate by a specified angle, thereby implementing a movable contact ( D) Electrically connected to the corresponding static electric shock (HI Hn).
  • the signal acquisition sub-module (61) includes a signal detection sub-module (611) and a harmonic detection sub-module (612); the signal detection sub-module (611) pairs a supply voltage, The voltage of the node and the gas discharge lamp (10) current sampling;
  • the signal comparison analysis sub-module (62) comprises a micro control unit (621) and a comparator electrically connected to the micro control unit (621) (622) , 623); the electrical signal collected by the signal acquisition sub-module (61) is input to the micro control unit (621) and the comparators (622, 623); the micro control unit (621) is clocked by the signal analysis process
  • the drive signal sub-module (63) outputs a control signal.
  • the energy conversion inductor (L1), the energy conversion capacitor (50), and the energy conversion control module (60) are mounted inside the same housing, and the ballast inductor (L2) is separately mounted outside the housing.
  • the energy conversion capacitor (50) and the energy conversion control module (60) are mounted in the same housing, and the energy conversion inductor (L1) and the ballast inductor (L2) are separately mounted in another housing.
  • the technical problem of the present invention can also be achieved by adopting the following technical solutions:
  • a method of dynamically adjusting a gas discharge lamp comprising the steps of:
  • ballast inductor (L2) electrically connecting one end of each of the ballast inductor (L2), the energy conversion inductor (L1), and the energy conversion capacitor (50) to the first node (a); and the other of the energy conversion capacitor (50)
  • One end and the other end of the ballast inductor (L2) are electrically connected to both ends of the gas discharge lamp (10), respectively, while the other end of the energy conversion capacitor (50) and the energy conversion inductor (L1) are One end is electrically connected to both ends of the AC power supply (V N ); thereby forming a T-type network drive module (30);
  • the energy conversion control module (60) compares the collected electrical signals with a user-set program, and performs an adjustment control on the equivalent capacitance value of the energy conversion capacitor (50).
  • the gas discharge lamp (10) is dynamically adjusted to adjust the energy distribution within the T-type network drive module (30).
  • the step A further includes the following sub-steps,
  • the energy conversion inductor (L1) and the ballast inductor (L2) adopt an inductive coil of a fixed inductance value that is not magnetically coupled to each other;
  • the step C further includes the following steps,
  • the signal collection sub-module (61) from The power supply (V N ) and the first node (a) collect an electrical signal and transmit the electrical signal to a signal comparison analysis sub-module (62); the signal comparison analysis sub-module (62) collects the The electrical signals are compared and analyzed, and the control signals of the parallel branches in which the capacitors (C1, ..., Cn) are closed or disconnected are sent to the drive signal sub-module (63) in time series; the drive signal sub-module (63) Transmitting a closed or open drive signal to the corresponding controlled switching device (K1 Kn) according to the control signal;
  • the step D further includes the following sub-steps,
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node) and the lamp current acquisition module, and transmits the electrical signal to the signal comparison analysis sub-module (62); D2.
  • the signal comparison analysis sub-module (62) issues a closed and/or open controlled switching device to the drive signal sub-module (63) according to the electrical signal collected in step B1 and according to a program set by the user (Kl Kn Drive signal;
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • the energy conversion control module (60) determines whether the gas discharge lamp (10) is successfully ignited according to the collected electrical signal; if the gas discharge lamp (10) is successfully ignited, the completion Autonomous boost ignition; if the gas discharge lamp (10) ignition is unsuccessful, step C is performed;
  • step B the method further includes the step of determining whether the gas discharge lamp (10) is damaged or malfunctioning. , which is
  • the energy conversion control module (60) determines whether the gas discharge lamp (10) is successfully ignited according to the collected electrical signal
  • the energy conversion control module (60) determines whether the gas discharge lamp is damaged or malfunctions according to the collected electrical signal
  • the energy conversion capacitor (50) includes n base capacitors (C 0 ) and capacitors (CI Cn ) connected in parallel between the first node (a) and the second node (b), and series capacitors ( CI Cn) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch; the energy conversion control module (60) The signal acquisition sub-module (61), the signal comparison analysis sub-module (62) and the driving signal sub-module (63);
  • step A includes the following sub-steps:
  • the signal comparison sub-module module (62) sets an equivalent capacitance value of the energy conversion capacitor (50) according to a preset ignition voltage requirement
  • the step B further includes the following sub-steps,
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node (a), and the lamp current collecting module, and transmits the electrical signal to the signal comparison analysis sub-module (62).
  • the signal comparison analysis sub-module (62) compares and analyzes the collected electrical signals to determine whether the gas discharge lamp (10) is successfully ignited;
  • step C1 If the gas discharge lamp (10) is not successfully ignited, perform the following step C1;
  • the signal comparison analysis sub-module (62) sends a driving signal to the driving signal sub-module (63) to close the corresponding controlled switching device (Kl Kn);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal
  • step B the ignition voltage equivalent is a minimum voltage condition that should be satisfied at the first node when the gas discharge lamp (10) can be illuminated;
  • the energy conversion control module (60) increases the effective capacitance value of the energy conversion capacitor (50), increases the voltage of the first node, and returns to the step.
  • the energy conversion capacitor (50) includes n basic capacitors (Co) and capacitors (CI Cn) connected in parallel between the first node (a) and the second node (b), and in series with each capacitor ( CI Cn) n controlled switching devices (Kl Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) includes a signal acquisition sub-module (61), a signal comparison analyzer Module (62) and drive signal sub-module (63);
  • step A includes the following sub-steps:
  • the signal acquisition sub-module (61) detects the voltage of the first node in real time, and the first section of the real-time detection Point (a) voltage is sent to the signal comparison analysis sub-module (62), and when the signal comparison analysis sub-module (62) determines that the first node detected in the real-time detection is less than a preset ignition voltage equivalent, step B1 is performed. ;
  • the signal comparison analysis sub-module (62) sends a driving signal to the driving signal sub-module (63) to close the corresponding controlled switching device (Kl Kn);
  • the driving signal sub-module (63) controls each of the corresponding controlled switching devices (K1, ..., ⁇ ) to be closed according to the received driving signal, so that the parallel branches of the respective capacitors (C1, ..., Cn) are connected. Thereby increasing the equivalent capacitance value of the energy conversion capacitor (50), causing the first node) voltage to increase, returning to step A1.
  • the technical problem of the present invention can be achieved by adopting the following technical solutions -
  • a soft start method for a gas discharge lamp based on the topological T-type network driving device according to claim 1, for the ignition of the gas discharge lamp (10) to a normal lighting process, characterized in that the following steps are included :
  • the energy conversion control module (60) increases the effective capacitance value of the energy conversion capacitor (50) to increase the voltage of the first node; the ignition voltage equivalent is that the gas discharge lamp can be illuminated (10) When the first node (a) should meet the minimum voltage condition;
  • the energy conversion control module (60) determines, according to the collected electrical signal, whether the voltage of the first node is up to a preset normal value; if the voltage of the first node (a) does not reach a preset normal value, Returning to step A; if the first node) voltage reaches a preset normal value, the soft start of the gas discharge lamp is completed.
  • the energy conversion capacitor (50) includes n base capacitors ( ) and capacitors (CI Cn ) connected in parallel between the first node (a) and the second node (b), and series capacitors (CI Cn ) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) includes a signal acquisition sub-module (61), signal comparison analysis Submodule (62) and drive signal submodule (63);
  • step A includes the following sub-steps:
  • the signal comparison analysis sub-module (62) sends a drive signal to the drive signal sub-module (63) to close the corresponding controlled switch device (K1 n);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal
  • the step B includes the following sub-steps,
  • the signal acquisition sub-module (61) detects the first node) voltage in real time, and sends the real-time detected first node) voltage to the signal comparison analysis sub-module (62);
  • the signal comparison analysis sub-module (62) determines that the first node (a) voltage detected by the real-time detection does not reach the preset normal value, and returns to step A1;
  • the signal comparison analysis sub-module (62) determines that the real-time detected first node (a) voltage reaches a preset normal value, and completes the soft start of the gas discharge lamp.
  • a method for voltage regulation and dimming of a gas discharge lamp based on the topological T-type network driving device described in claim 1, for the normal lighting of the gas discharge lamp (10), characterized in that it comprises the following Steps:
  • the energy conversion control module (60) compares the collected real-time electrical signal with the preset electrical signal, and when the real-time electrical signal does not reach the preset electrical signal, performs step C; when the real-time electrical signal reaches When the electrical signal is preset, the voltage regulation dimming is completed;
  • the energy conversion control module (60) adjusts the equivalent capacitance value of the control energy conversion capacitor (50) according to the comparison result of step B, and returns to step ⁇ , the energy conversion capacitor (50) includes n parallels in the The base capacitor (C 0 ) and the capacitor (CI Cn) between a node (a) and the second node (b), and the parallel branch of each capacitor (CI Cn) are connected in series to control the switching of the respective branches.
  • n controlled switching devices (Kl Kn) the energy conversion control module (60) comprises a signal acquisition sub-module (61), a signal comparison analysis sub-module (62) and a drive signal sub-module (63);
  • step B includes the following sub-steps:
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node (a), and the lamp current acquisition module, and transmits the electrical signal to the signal comparison analysis sub-module (62).
  • the signal comparison analysis sub-module (62) compares and determines the collected electrical signal with the preset electrical signal;
  • step C1 When the real-time electrical signal does not reach the preset electrical signal, performing step C1; when the real-time electrical signal reaches the preset electrical signal, completing the voltage regulation dimming;
  • the signal comparison analysis sub-module (62) sends a driving signal for closing the corresponding controlled switching device (Kl Kn) to the driving signal sub-module (63);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal.
  • the energy conversion control module (60) analyzes and determines reactive power and harmonic conditions according to the collected real-time electrical signal. When the reactive power and harmonic conditions do not meet the preset index, step B is performed; When the reactive power and harmonic conditions meet the preset index, the reactive power compensation and the suppression of the harmonics are completed;
  • the energy conversion control module (60) adjusts the equivalent capacitance value of the energy conversion capacitor (50) according to the comparison result of the step A, and returns to the step person.
  • the energy conversion capacitor (50) includes n base capacitors (C 0 ) and capacitors (CI Cn ) connected in parallel between the first node (a) and the second node (b), and series capacitors ( CI Cn) n controlled switching devices (K1, ..., Kn) for controlling the switching of the respective branches in the parallel branch;
  • the energy conversion control module (60) includes a signal acquisition sub-module (61), a signal Comparing analysis sub-module (62) and driving signal sub-module (63);
  • step A includes the following sub-steps:
  • the signal acquisition sub-module (61) collects an electrical signal from the power supply (V N ), the first node) and the lamp current acquisition module and transmits the electrical signal to the signal comparison analysis sub-module (62);
  • the signal comparison analysis sub-module (62) compares and judges the current reactive power and harmonic conditions with the preset indicators according to the collected electrical signals;
  • step B1 When the reactive power and harmonic conditions do not meet the preset index, step B1 is performed; when the reactive power and the harmonic condition meet the preset index, the reactive power compensation and the suppression of the harmonic are completed;
  • the signal comparison analysis sub-module (62) sends a drive signal to the drive signal sub-module (63) to close the corresponding controlled switch device (Kl Kn);
  • the driving signal sub-module (63) controls each corresponding controlled switching device according to the received driving signal
  • a topology T-type network driver principle and method of the present invention is to design a novel gas discharge lamp driver, particularly a driver adapted to a high intensity gas discharge lamp.
  • the features are as follows: 1. As shown in FIG. 1, the topology T-type network driver (00) is electrically connected between the gas discharge lamp (10) and the AC power supply (V N );
  • the topology T-type network driver (00) comprises two major circuit modules, and the topology ⁇ type network driver module (20) and the energy conversion control module (40);
  • the topology T-type network driver module (20) is a driving mechanism of the topology T-type network driver (00); the energy conversion control module (40) is a control mechanism of the topology T-type network driver module (20) ;
  • the topological T-type network driving module (20) includes an energy conversion inductor (L1), an energy conversion capacitor (30), a ballast inductor (L2), and a harmonic suppression capacitor electrically connected to both ends of the energy conversion inductor (L1).
  • (C) a first output terminal (OUT1) electrically connected to the gas discharge lamp (10), a second output terminal (OUT2) electrically connected to the gas discharge lamp (10), and a power supply source (VN)
  • the two output terminals (IN1, IN2) electrically connected to the output terminal; the energy conversion inductor (L1) and the harmonic suppression capacitor (C) electrical connection point (c) and the topology T-type network drive module (20) a first input terminal (IN1) electrically connected, the energy conversion inductor (L1) and the harmonic suppression capacitor (C) electrical connection point (d) and one end of the energy conversion capacitor (30) and One end of the ballast inductor (L2) is connected to the first node (a); the other end of the energy conversion capacitor (30), the topological T-type network driving module
  • the energy conversion inductor (L1) and the ballast inductor (L2) are two fixed inductors without magnetic coupling, and L2>L1;
  • the energy conversion capacitor (30) is composed of a fixed capacitor CO and an equivalent adjustable capacitor; the energy conversion inductor (L1) has a potential function not only for adjusting the node but also has a harmonic suppression function;
  • the size of the ballast inductor (L2) not only has the function of a conventional inductive ballast but also has a potential function of adjusting the node;
  • the effective capacity of the energy conversion capacitor (30) not only has the potential function of adjusting the node, but also has the function of reactive power compensation of the power supply line and the function of adjusting harmonics;
  • the capacity of the harmonic suppression capacitor (C) only suppresses harmonics, and the influence on other functions can be neglected.
  • the potential of the node (a) directly or indirectly reflects the characteristics of the bootstrap ignition effect, the characteristics of the bootstrap repetitive ignition effect, the soft start characteristic, the voltage regulation and voltage regulation dimming characteristics, the reactive power compensation and the harmonic suppression characteristic;
  • the potential of the node (a) is determined by the effective capacity of the energy conversion capacitor (30); the energy conversion control module (40) collects the voltage of the power supply input terminal, the voltage of the node (a), and The three physical quantity signals of the gas discharge lamp (10) are compared with their given values to adjust the effective capacity of the energy conversion capacitor (30).
  • topology T-type network driver module (20) includes the following five circuit features:
  • Bootstrap ignition feature Since the energy conversion inductor (L1) and the ballast inductance (L2) are set as two independent inductors without magnetic coupling, and in the energy conversion capacitor (30) There is a suitable fixed capacitor CO, so that the ignition supply voltage of the node can meet the ignition requirement of the gas discharge lamp (10) under normal conditions; if the ignition is preset in the topology T-type network driver (20) If the ignition is unsuccessful in time, the topological T-type network driving module (20) may increase the effective capacitance value of the energy conversion capacitor (30) by the energy conversion control module (40) to increase the ignition voltage; or It is determined by the energy conversion control module (40) that the lamp is damaged or other failure causes.
  • the repeated firing voltage equivalent of the node (a) is almost equal to or greater than the repeated firing equivalent of the power receiving end of the prior art circuit ballast during almost all of the normal operating hours of the gas discharge lamp (10).
  • 1.1 structural characteristics and their component parameters are determined, so that there is always a bootstrap repetitive ignition effect at the node (a) point in the whole process of controlling the lighting, which is beneficial to shorten the zero-crossing and turn-off time and improve the light. effect. 1.2.3. Soft Start Features:
  • the gas discharge lamp (10) has a sharp increase in lamp current after successful ignition, and at the same time, the amount of non-functionality provided by the preset capacitor is far from enough, so that the ballast inductance (L2) mainly passes through the inductance (L1).
  • the power supply is requested to have no function, and thus the reactive current flowing through the energy conversion inductor (L1) is greatly increased, causing the potential of the node (a) to drop sharply, which is the result of soft start.
  • the topology T-type network driving module (20) gradually increases the effective capacitance of the energy conversion capacitor (30) by a preset timing of the energy conversion control module (40), the node (a) The potential gradually rises until it reaches the preset normal value;
  • this soft start method effectively overcomes and effectively suppresses the occurrence and impact of the rectification effect.
  • the multi-level inductor dimming in the series has the problem of switching instantaneous power-off, so whether the same core winding or the independent core winding is not suitable for series multi-stage inductor dimming, it is not suitable for voltage regulation control; Adding a single-pole series inductor winding to a core and connecting it in series during energy-saving dimming facilitates zero-crossing repetitive ignition.
  • the independent series inductance may increase or decrease the zero-crossing turn-off time by a large reduction of the given zero-crossing re-ignition voltage, which is another difficulty encountered by the independent series inductor buck dimming technology.
  • the series capacitor step-down dimming is characterized by increasing the capacitance impedance to reduce the inductance impedance at normal brightness; and reducing the capacitance impedance to increase the inductance impedance during step-down dimming, so the step-down dimming does not affect the zero-crossing repetitive ignition.
  • the matching ballast inductance must be much larger than the conventional ballast inductance, so the loss is also increased, which is contrary to the cost and energy saving direction; more notably: series capacitor
  • the lamp current crest factor is increased, the impact on the lamp is large, and the life of the lamp is affected. This effect may be more obvious in the middle and late stages of the lamp entering the life. Therefore, there is almost no use in the Chinese market.
  • the principle and method of reactive power compensation is performed by sampling three physical quantities of a supply voltage, a voltage of the node (a), and a current of the gas discharge lamp (10), and comparing with a preset corresponding value thereof.
  • This principle and method can be regulated or boosted or stepped down; The voltage regulation and regulated dimming control of this principle and method always guarantees that the node has a repeated ignition bootstrap effect.
  • the energy conversion capacitor (30) is again an equivalent reactive compensation capacitor of the topology T-type network driver, and can compensate the power factor of the gas discharge lamp (10) at the power input terminal under maximum load to 0.95;
  • the energy conversion inductor (L1) is again a filter, and the harmonic suppression capacitor (C) connected in parallel with it is also a filter.
  • the harmonic suppression capacitor (C) in the topology T-type network driver module (20) differs from the conventional filter capacitor connection in that it has a special bead effect, when there is a sudden current from the node)
  • the harmonic suppression capacitor (C) can synchronously generate a charge and discharge current opposite thereto to cancel and suppress the impact of the sudden harmonic current; at the same time, this A harmonic suppressor consisting of the energy conversion inductor (L1) and the harmonic suppression capacitor (C) connected in parallel is also used to resist current surge from the power supply line; using the topology T-type network driver (20)
  • the harmonic suppression circuit and the effective capacity control method using the energy conversion capacitor (30) enable the current harmonic index of the power supply end to meet the requirements of relevant technical standards in China and internationally, thereby cracking the gas discharge lamp (10) for a long time. Parallel compensation capacitors with prior art cannot
  • the five functions expressed by the 1,1, 1.1.2, 1.1.3, 1.1.4, 1.1.5 are achieved by adjusting the effective capacity of the energy conversion capacitor (30), and it is not connected in series.
  • the gas discharge lamp (10) loop is connected to the central common node of the three sides of the T-type, so that the impact on the lamp and the power supply is minimal;
  • the capacitor in the energy conversion capacitor (30) adopts a multi-stage parallel control structure (for example, 7 or more stages), and the effective capacity adjustment method thereof adopts a semiconductor controllable switching device; a micro electromechanical hand; an electromagnetic relay of any one of them It can be easily realized, and has high reliability and good stability.
  • the energy conversion capacitor (30) includes, but is not limited to, three basic structures, one of which is: the (30.1) includes a parallel connection between the first node (a) and the second node (b) The fixed capacitor CO and the n capacitors (CI Cn) that can be selected in parallel and the n controlled switching devices (Kl Kn). One end of each of the n capacitors (CI Cn ) that can be selected in parallel is connected to the first node (a); n controlled switching devices (Kl Kn) are respectively connected in series to n capacitors that can be selected in parallel (CI Cn ) of The other end and the second node (b);
  • the energy conversion control module (40) includes a signal acquisition sub-module (41), a signal comparison analysis sub-module (42), and a drive signal sub-module (43.1);
  • the signal acquisition sub-module (41) acquires signals from the power supply (VN), the first node (a), and the lamp current sampling component and transmits the electrical signals to the signal comparison analysis sub-module (42);
  • the signal comparison analysis sub-module (42) compares and analyzes the electrical signals collected by the chirp, and closes or turns off the capacitors (C1, ..., Cn) and according to the control signals of the joint branches.
  • Sending to the driving signal sub-module (43.1); the driving signal sub-module (43.1) control signal sends a closed or open driving signal to the corresponding controlled switching device (Kl Kn), thereby adjusting the energy conversion capacitor (30.1) The equivalent capacitance value.
  • the energy conversion capacitor (30) includes, but is not limited to, three basic structures, two of which are: (30.2) includes: one parallel between the first node (a) and the second node (b)
  • the fixed capacitor CO and n capacitors (CI Cn) and n controlled electromagnetic relays (Jl Jn) are available for parallel selection.
  • One end of each of the n capacitors (CI Cn) that can be selected in parallel is connected to the first node; the normally open taps of the n controlled electromagnetic relays (J1, ..., Jn) are respectively connected in series to be selected in parallel.
  • the second node (b) Between the other end of the capacitor (C1, ..., Cn) and the second node (b);
  • the energy conversion control module (40) includes a signal acquisition sub-module (41), a signal comparison analysis sub-module (42), and a drive signal sub-module (43.2);
  • the signal acquisition sub-module (41) collects signals from the power supply (VN), the first node, and the lamp current sampling component and transmits the acquired signals to the signal comparison analysis sub-module (42);
  • the analysis sub-module (42) compares and analyzes the collected electrical signals, and closes or disconnects the respective capacitors (CI, . . . , Cn) and sends them to the drive according to the control signals of the associated branches.
  • a signal sub-module (43.2); the drive signal sub-module (43.2) control signal sends a closed or open drive signal to the corresponding controlled relay (J1 Jn), thereby adjusting the equivalent of the energy conversion capacitor (30.2) Capacitance value.
  • topology T-type network driver principle and method which is characterized by:
  • the energy conversion capacitor (30) includes, but is not limited to, three basic structures, three of which are: the (30.3) includes a parallel connection between the first node (a) and the second node (b)
  • the fixed capacitor CO and the n capacitors (C1, ..., Cn) that can be selected in parallel and a small motor-drive mechanism slide.
  • a lead line of the slider is connected to the second node (b); one end of each of the n capacitors (C1, . . .
  • the energy conversion control module (40) includes a signal acquisition sub-module (41), a signal comparison analysis sub-module (42), and a drive signal sub-module (43.3);
  • the signal acquisition sub-module (41) acquires signals from the power supply (VN), the first node (a), and the lamp current sampling component and transmits the acquired signals to the signal comparison analysis sub-module (42);
  • the comparison analysis sub-module (42) compares and analyzes the collected electrical signals, and converts the data of the newly determined number of closed or open capacitors (C1, ..., Cn) into a motor rotation angle and a rotation reversal
  • the signal is transmitted to the drive signal sub-module (43.3); the drive signal sub-module (43.3) controls the motor rotation and selects the number of the capacitors (C1, ..., Cn) to be turned on, so that the energy conversion capacitor (30.3)
  • the equivalent capacitance value corresponds to the function setting value.
  • the signal acquisition sub-module (41) includes three physical quantity sampling signal detection sub-modules (411) and a harmonic detection sub-module for a supply voltage, a voltage of the node (a), and a current of the gas discharge lamp (10). (412); the signal comparison analysis sub-module (42) comprises a micro control unit (421) and a comparator (422), (423) electrically connected to the micro control unit (421); the signal acquisition sub-module ( 41) the electrical signal input capture micro control unit (421) and a comparator (422), (423); said micro control unit (421) by the output timing signal analysis process according to a control signal.
  • the ignition supply voltage of the node (a) can meet the ignition requirement of the gas discharge lamp (10) under normal conditions;
  • the topological T-type network driver (20) fails to ignite in the preset ignition time, and then the topology T-type network driving module (20) can increase the energy conversion capacitor through the energy conversion control module (40).
  • the effective capacitance value of (30) is such that the ignition voltage is increased; or the energy conversion control module (40) determines that the lamp is damaged or causes another failure.
  • the signal acquisition sub-module (41) collects signals from the power supply (VN), the first node (a), and the lamp current sampling component and transmits the electrical signals to the signal comparison analysis sub-module (42).
  • the signal comparison analysis sub-module (42) compares and analyzes the collected electrical signals to determine whether the ignition is successful or not and the cause of the unsuccessful; if there is no light in the set ignition time
  • the analysis module 421 sends a signal to the drive signal sub-module to appropriately increase the effective capacitance value of the energy conversion capacitor (30), thereby raising the potential of the node (a) for improving the ignition equivalent.
  • This kind of ignition performance solves the technical problem of low temperature in the low temperature environment or low supply voltage, especially in the late stage of the lamp entering the life of the lamp.
  • the bootstrap ignition of the node is rationally designed. The amount can avoid or reduce the occurrence of sputtering.
  • the repeated firing voltage equivalent of the node (a) is almost equal to or greater than the repeated ignition equivalent of the power receiving end of the prior art circuit ballast during almost all of the normal operating hours of the gas discharge lamp (10).
  • the 1.1 structural characteristics and their component parameters are determined, so that there is always a bootstrap repetitive ignition effect at the node) point during the whole process of controlling the lighting, which is advantageous for shortening the zero-crossing commutation time and improving the luminous efficiency.
  • a soft start method for gas discharge lamps :
  • the energy conversion control module determines that the high-pressure gas discharge lamp is successfully ignited according to the electrical signal, and gradually increases the capacitance value of the energy conversion capacitor, thereby adjusting the voltage of the first node, so that The arc current of the high pressure gas discharge lamp after glow discharge is slowly increased to a steady state operating current.
  • the step A includes the following sub-steps -.
  • step B includes the following sub-steps:
  • the signal acquisition sub-module collects the electric signal and transmits the electric signal to the signal comparison analysis sub-module;
  • the signal comparison analysis sub-module determines, according to the electrical signal collected in step B1, that the high-pressure gas discharge lamp is successfully ignited, and issues a driving signal for sequentially closing the controlled switching device to the driving signal sub-module according to a fixed time interval;
  • the driving signal sub-module controls each controlled switching device to be sequentially closed, so that the parallel branches of the capacitors are sequentially turned on, thereby gradually increasing the equivalent capacitance between the first node and the second node, so that Energy conversion capacitor The capacitance value gradually increases.
  • the energy conversion control module adjusts a capacitance value of the energy conversion capacitor according to a preset time period, and makes a voltage value of the first node constant in a respective time period according to an electrical signal collected from the first node.
  • a voltage value is set to adjust the voltage across the high pressure gas discharge lamp such that the high pressure gas discharge lamp has a corresponding luminance of illumination during each time period.
  • the step A includes the following sub-steps:
  • the signal collection submodule collecting an electrical signal from the power supply and the first node, and collecting the electrical signal Transmitted to the signal comparison analysis sub-module;
  • the signal comparison analysis sub-module compares and analyzes the electrical signals collected by the chirp, and sends a control signal for closing or disconnecting the parallel branch of each capacitor to the driving signal according to the timing a sub-module;
  • the driving signal sub-module sends a closed or open driving signal to the corresponding controlled switching device according to the control signal;
  • step B includes the following sub-steps:
  • the signal acquisition sub-module collects an electrical signal from the first node and transmits the electrical signal to the signal comparison analysis sub-module at a start time of the preset time period;
  • the signal comparison analysis sub-module compares the electrical signal collected to the first node with a voltage value of the preset first node in the time period, and determines, between the first node and the second node, according to the comparison situation.
  • the equivalent capacitance value that should be set, and a control signal that the parallel branch of each capacitor needs to be turned on or off, that is, the respective driving signals of the controlled switching device, is sent to the driving signal sub-module;
  • the driving signal sub-module is configured to control each controlled switching device to be closed or opened according to the driving signal, so that the parallel branch of the corresponding capacitor is turned on or off, thereby adjusting the first node and
  • the equivalent capacitance value between the second nodes is such that the energy conversion capacitor equivalent capacitance value reaches the set equivalent capacitance value described in step B2.
  • the harmonics flowing through the power supply input terminal IN1 are related to the current of the gas discharge lamp (10), the effective capacity of the variable capacitor (30), and the inductances (L1) and (L2). Therefore, the harmonics flowing through the power input (IN1) Wave suppression is performed by the LI together with the harmonic suppression capacitor C and appropriately adjusting the energy conversion capacitor (30); as shown in FIG.
  • the signal detection sub-module 411 will clamp the supply voltage, the node (a)
  • the potential and the lamp current signal are compared by the comparators (422), (423) and sent to the controller (421), and the signal detection sub-module (411) also collects the supply voltage, the node (a) potential, and The lamp current signal is sent to the harmonic detection sub-module (412), and the harmonic detection sub-module (412) processes the signal and sends it to the control unit (421), and the control unit (421), according to the comprehensive analysis result.
  • the drive signal sub-module 413.1 drives a signal to appropriately adjust the size of the energy conversion capacitor (30) to improve the harmonic content of the power supply input terminal IN1.
  • FIG. 1 is a schematic diagram of an electrical principle of a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of an electrical principle of a second embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an electrical principle of a third embodiment of the present invention.
  • FIG. 4 is a schematic diagram of functional modules of a third embodiment of the present invention.
  • Figure 5 is a schematic view of a prior art high pressure gas discharge lamp illumination system
  • FIG. 6 is a schematic waveform diagram of a prior art high pressure gas discharge lamp
  • FIG. 7 is a schematic diagram of a rectification effect waveform of a prior art high pressure gas discharge lamp
  • FIG. 8 is a schematic diagram of an electrical principle of a multi-period dimming control using a preset power ballast in the prior art. detailed description
  • a novel topology T network driver is proposed, which is adapted to a gas discharge lamp source, as shown in FIG.
  • the topology T-type network driver (100) is electrically connected between the gas discharge lamp (10) and an alternating current power supply (V N );
  • the topology T-type network driver (100) comprises two major circuit modules, the topology T-type network driver module (30) and the energy conversion control module (60);
  • the topology T-type network driver module (20) is a driving mechanism of the topology T-type network driver (00);
  • the energy conversion control module (60) is a control mechanism of the topology T-type network driver module (30) ;
  • the topology T-type network driving module (20) includes an energy conversion inductor (L1), an energy conversion capacitor (30), a ballast inductor (L2), a harmonic suppression capacitor (C) electrically connected to both ends of the energy conversion inductor (L1), a first output terminal (OUT1) electrically connected to the gas discharge lamp (10), and a second output terminal (OUT2) electrically connected to the gas discharge lamp (10), two input terminals (I1, IN2) electrically connected to an output terminal of the power supply (V); the energy conversion inductor (L1) and The harmonic suppression capacitor (C) electrical connection point (c) is electrically connected to a first input terminal (IN1) of the topology T-type network driving module (20), the energy conversion inductor (L1) and the harmonic suppression a capacitor (C) electrical connection point (d) is coupled to one end of the energy conversion capacitor (30) and to one end of the ballast inductor (L2) at a first node (a); the energy conversion capacitor (30) The other end of the topology T-type network driver module (20) is
  • the topology T-type network driver (00) is electrically connected between the gas discharge lamp (10) and an alternating current power supply (V N ); the topology T-type network driver (00) comprises two major circuit modules, The topology T-type network driving module (30) and the energy conversion control module (40);
  • the topology T-type network driver module (30) is a driving mechanism of the topology T-type network driver (100);
  • the energy conversion control module (60) is a control mechanism of the topology T-type network driver module (20) ;
  • the topological T-type network driving module (30) includes an energy conversion inductor (L1), an energy conversion capacitor (30), a ballast inductor (L2), and a harmonic suppression capacitor electrically connected to both ends of the energy conversion inductor (L1) (C), a first output terminal (OUT1) electrically connected to the gas discharge lamp (10), a second output terminal (OUT2) electrically connected to the gas discharge lamp (10), and a power supply source (VN)
  • the two output terminals (IN1, IN2) electrically connected to the output terminal;
  • the energy conversion inductor (L1) and the harmonic suppression capacitor (C) electrical connection point (c) and the topology T-type network drive module (30) a first input terminal (IN1) electrically connected, the energy conversion inductor (L1) and the harmonic suppression capacitor (C) electrical connection point (d) and one end of the energy conversion capacitor (50) and One end of the ballast inductor (L2) is connected to the first node (a); the other end of the energy conversion capacitor (50), the topological T-type network
  • the structural form is identical. However, the difference is that the ballast inductance L2 in the first embodiment is smaller than the existing ballast L2 in the second embodiment, both of which have the five major functional effects, but since the first embodiment L2 is smaller than L2 in the second embodiment, so the loss of the first embodiment will be lower.
  • the energy of the energy conversion inductor L1 and the ballast inductor L2 is given in a western manner: all provided by the power supply VN, simultaneously supplied by the power supply VN and the energy conversion capacitor 50, all by energy
  • the transform capacitor 50 provides a surplus reference to the energy conversion capacitor 50.
  • the power consumption of the energy conversion inductor L1 can be significantly changed and converted into a high-pressure gas discharge lamp 10 with a significant change in the amount of function for control purposes.
  • the effect of this energy converter can be measured by the voltage Va.
  • Va and the energy conversion inductor L1 and the equivalent capacitance C of the energy conversion capacitor 30 and the relationship between Va and the lamp voltage, the lamp current IZ and the lamp power PZa are determined by the following five equations:
  • Va V N -Il-jroLl ( 1 )
  • V Va - l -jroL 2
  • lZ 2 Va 2 / ⁇ ((oL 2 ⁇ + RZa 2 ⁇ (4)
  • V N is the power supply voltage
  • Va is the supply voltage of the ballast inductor L2.
  • VZ is the lamp voltage
  • II is the current flowing through the inductor L1
  • IZ is the lamp current
  • I c is the current released by the energy conversion capacitor 30
  • Ria is the lamp resistance
  • PfZa is the lamp power factor, in (1 (2) (3) where V N , Va, II, I c are all vectors.
  • the variation of Va in four different energy given modes is as follows:
  • the energy conversion inductor and the reactive current absorbed by the ballast inductor L 2 are all provided by the power supply V N : at this time
  • the voltage drop II - j co Li on the quantity conversion inductor LI is the largest, Va is the smallest; Va ⁇ V N ;
  • the reactive current of the ballast inductor L 2 is all given by the energy conversion capacitor 50, and the reactive current of the energy conversion inductor is given by the power supply V N , at which time Va is equal to the power supply voltage V N minus Il co Ll.
  • the reactive current absorbed by itself is small, so Va is slightly smaller than V N ;
  • Va changes with I c that is, the law of change with the change of the equivalent capacitance C of the energy conversion capacitor 50 proves that the magnitude of the equivalent capacitance C of the adjustment energy conversion capacitor 30 enables Va to be greater than, equal to, and The grading adjustment within a wide range of less than) enables efficient and precise control of the ignition start and operation of the high pressure gas discharge lamp 10 over a wide range.
  • the equivalent capacitance value C of the energy conversion capacitor 30 can be adjusted according to a certain timing and manner, the reactive power amount of the energy conversion capacitor 50 released to the energy conversion inductor L1 and the ballast inductor L2 can be adjusted, thereby achieving softness. Start, time-saving energy-saving dimming and other functions.
  • the energy conversion control module 60 controls the capacitance value of the energy conversion capacitor 50 according to an electrical signal collected from the power supply V N and the first node a.
  • the energy conversion control module 60 can be implemented by pure hardware or by a microprocessor supplemented by software.
  • the microprocessor can be a microcontroller or a programmable logic device.
  • the third embodiment of the present invention adopts the following specific circuit structure.
  • the energy conversion capacitor 50 includes n capacitors C1 connected in parallel between the first node a and the second node b.
  • the energy conversion control module 60 includes a signal acquisition sub-module 61, a signal The comparison analysis sub-module 62 and the drive signal sub-module 63 are combined.
  • the signal acquisition sub-module 61 collects an electrical signal from the power supply V N and the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62; the signal comparison analysis sub-module 62 pairs the collected The electrical signals are compared and analyzed, and the control signals for closing or disconnecting the parallel branches of the capacitors CI Cn are sent to the driving signal sub-module 63 in time series; the driving signal sub-module 63 is correspondingly received according to the control signals.
  • Control The switching devices K1, I, Kn emit a drive signal that is closed or open, thereby adjusting the equivalent capacitance value of the energy conversion capacitor 30.
  • the signal acquisition sub-module 61 includes a signal detection sub-module 611 that collects voltage and current signals from the power supply V N and the first node a, and a harmonic that collects harmonic signals from the first node a.
  • the signal detection sub-module 612 includes a micro control unit 621 and a comparator 622 electrically connected to the micro control unit 621; the electrical signal collected by the signal acquisition sub-module 61 is input to the micro control unit 621 and / or comparator 622; the micro control unit 621 outputs the control signal in time series by signal analysis.
  • the controlled switching devices K1, ..., Kn are thyristors, and of course, the relays can also be implemented.
  • an overvoltage protection device TVS is electrically connected between the first node a and the second node b.
  • the energy conversion control module 60 can also be applied to the energy conversion capacitor 30 of the first embodiment to effect an adjustment of the non-functional amount released to the energy conversion inductor L1 and the ballast inductor L2.
  • the detection signal is obtained from the ballast device, and the harmonic limit function, the reactive power compensation function, the brightness control function, the stable voltage function, and the adaptive optimization ignition function are selected according to the result of the signal detection, and adaptive optimization is performed. After the ignition is successful, the soft start function is executed.
  • the above various functions are used to adjust the energy conversion capacitor 50 in the rectifier device through the energy conversion control module, thereby realizing the control of the ballast device and controlling the high pressure gas discharge lamp.
  • the energy conversion control module 60 adjusts the equivalent capacitance value C of the energy conversion capacitor 50 according to the requirements of different functional modules according to a certain timing and manner, thereby adjusting the reactive power amount released to the energy conversion inductor L1 and the ballast inductor L2.
  • the energy release of the energy conversion capacitor 50 does not eliminate the electrical energy, but a small variable can cause a large change in the voltage drop of the energy conversion inductor L1, thereby conveniently and reliably changing the voltage of the power supply to the high pressure gas discharge lamp 10, thereby achieving
  • the high-pressure gas discharge lamp 10 has a functional amount of effective control to perform tasks specified by the various functional modules, such as soft start and time-division energy-saving dimming.
  • the signal detected by the signal detecting sub-module 611 includes a power supply voltage V N detection, a voltage and current detection of the first node a.
  • the harmonic detection sub-module 612 is configured to detect a harmonic signal of the first node a.
  • the signals detected by the two modules are determined by the functions that need to be implemented. The above signals are not necessarily signals that must be detected. With the function of the energy conversion control module 60, the soft start of the high pressure gas discharge lamp 10 can be achieved.
  • the present invention provides a method for soft-starting a high-pressure gas discharge lamp. Based on the topological T-type network module 30 of the above embodiments, the method for soft-starting a high-pressure gas discharge lamp includes the following steps:
  • the energy conversion control module 60 is disposed in step A and the energy conversion capacitor 50 is modified.
  • the electrical structure of the third embodiment may be fully adopted, but is not limited thereto, because the foregoing step A can be implemented as described above.
  • the devices of the functions of the energy conversion control module 60 and the energy conversion capacitor 50 are in a variety of circuit forms, and the present invention encompasses any simple hardware circuit and software hardware hardware that can implement the functions of the energy conversion control module 60 and the energy conversion capacitor 50. Therefore, taking the third embodiment as an example, the step A includes the following sub-steps:
  • the signal acquisition sub-module 61, the signal comparison analysis sub-module 62 and the driving signal sub-module 63 are disposed in the energy conversion control module 60; the signal acquisition sub-module 61 is from the power supply V N and the first node a Collecting an electrical signal and transmitting the electrical signal to the signal comparison analysis sub-module 62; the signal comparison analysis sub-module 62 compares and analyzes the collected electrical signals, and closes or disconnects the capacitors C1 Oi in parallel
  • the control signal of the branch is sent to the driving signal sub-module 63 in time series; the driving signal sub-module 63 sends a closed or open driving signal to the corresponding controlled switching device K1 Kn according to the control signal;
  • step B includes the following sub-steps:
  • the signal collection sub-module 61 collects an electrical signal from the power supply V N and the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62;
  • the signal comparison analysis sub-module 62 determines that the high-pressure gas discharge lamp 10 is fired according to the electric signal collected in step B1, and sequentially issues the controlled switching device K1 to the driving signal sub-module 63 according to the fixed time interval.
  • the micro control unit 621 sends an ignition reference voltage to the ignition comparator 622, and the ignition success is formed by comparing the power supply V N and the first node a collecting electrical signals with the reference voltage. Or the judgment that the ignition is unsuccessful.
  • the micro control unit 621 further determines whether the ignition is unsuccessful due to the ignition voltage being too low or the ignition is unsuccessful due to the ignition voltage being too high, based on the comparison result of the ignition comparator 622. If the ignition is unsuccessful due to the ignition voltage being too low, the energy conversion capacitor 50 needs to be adjusted by the drive signal sub-module 63 to increase the ignition voltage; if the ignition is unsuccessful due to the excessive ignition voltage, the high-pressure gas discharge is judged.
  • the energy conversion capacitor 50 needs to be opened by the drive signal sub-module 63 to protect the energy conversion capacitor 50.
  • the equivalent capacitance value of the energy conversion capacitor 30 is not adjusted once, because the soft start means that the high-pressure gas discharge lamp 10 ignites from the glow to the arc discharge, and the supply voltage is instantaneous when the arc current starts to increase sharply.
  • the signal comparison analysis sub-module 62 drives the signal sub-module 63 according to a fixed time interval. A drive signal that sequentially closes the controlled switching device K1 Kn is issued. Of course, not all parallel branches need to be closed, the number of parallel branch closures and which parallel branch closures are controlled by the signal comparison analysis sub-module 62.
  • the driving signal sub-module 63 controls each controlled switching device Kl Kn to be sequentially closed to make each capacitor
  • the parallel branches of C1, ..., Cn are sequentially turned on, thereby gradually increasing the equivalent capacitance between the first node a and the second node b, so that the capacitance value of the energy conversion capacitor 50 is gradually increased.
  • the invention provides a method for adjusting the brightness of a high-pressure gas discharge lamp in a time-phase manner, based on the topological T-type network driver module ballast control device 30, comprising an energy conversion inductor L1 and electrically connected between the first node a and the second node b The energy conversion capacitor 50 between.
  • the method for adjusting the brightness of the high pressure gas discharge lamp in the time division includes the following steps:
  • the energy conversion control module 60 adjusts the capacitance value of the energy conversion capacitor 50 according to a preset time period, and makes the voltage value of the first node a constant at respective times according to the electrical signal collected from the first node a.
  • the preset voltage value in the segment adjusts the voltage across the high pressure gas discharge lamp 10 such that the high pressure gas discharge lamp 10 has a corresponding luminance of illumination during each time period.
  • the energy conversion control module 60 is provided in step A and the energy conversion capacitor 50 is modified, but is not limited to the electrical structure of the third embodiment.
  • the step A includes the following sub-steps:
  • the signal acquisition sub-module 61, the signal comparison analysis sub-module 62 and the driving signal sub-module 63 are disposed in the energy conversion control module 60; the signal acquisition sub-module 61 is from the power supply source and the node a Collecting an electrical signal and transmitting the electrical signal to the signal comparison analysis sub-module 62; the signal comparison analysis sub-module 62 is configured to the collected electrical
  • the signals are compared and analyzed, and the control signals for closing or disconnecting the parallel branches of the capacitors C1, C, and Cn are sequentially sent to the driving signal sub-module 63; the driving signal sub-module 63 is correspondingly according to the control signal.
  • the controlled switching device Kl Kn issues a drive signal that is closed or opened;
  • step ⁇ includes the following sub-steps:
  • the signal acquisition sub-module 61 collects an electrical signal from the first node a and transmits the electrical signal to the signal comparison analysis sub-module 62;
  • the signal comparison analysis sub-module 62 compares the electrical signal collected to the first node a with the voltage value of the preset first node a in the time period, and determines the first node a and the first according to the comparison situation.
  • the equivalent capacitance value to be set between the two nodes b, and to the drive signal sub-module 63, a control signal that the parallel branches of the capacitors C1, ..., Cn need to be turned on or off, that is, the controlled switch The respective drive signals of the device Kl Kn;
  • the micro control unit 621 issues a reference voltage to the voltage regulator comparator 623 for a predetermined period of time, and determines whether the voltage regulation is completed by the comparison result of the voltage regulator comparator 623.
  • the driving signal sub-module 63 controls the controlled switching devices K1, . . . , Kn to be turned on or off according to the driving signal, so that the parallel branches of the respective capacitors CI Cn are turned on or off, thereby adjusting
  • the equivalent capacitance between the first node a and the second node b causes the equivalent capacitance value of the energy conversion capacitor 50 to reach the set equivalent capacitance value described in step B2.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L’invention concerne une unité d’excitation de réseau en T et un procédé de commande associé. L’unité d’excitation de réseau en T comprend une bobine d’inductance de conversion d’énergie, un condensateur de conversion d’énergie et une bobine d’inductance ballast. Une capacité équivalente du condensateur de conversion d’énergie est réglée compte tenu d’un signal électrique échantillonné pour permettre la commande d’un amorçage par auto-élévation cathodique, d’un amorçage par auto-élévation cathodique répété, d’un démarrage souple, d’une régulation de tension et d’une gradation de régulation de tension, ainsi que d’une compensation de puissance réactive et d’une suppression des harmoniques dans une lampe à décharge.
PCT/CN2010/001273 2009-08-24 2010-08-24 Unité d’excitation de réseau en t et procédé de commande associé Ceased WO2011022937A1 (fr)

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PCT/CN2009/073454 WO2011022870A1 (fr) 2009-08-24 2009-08-24 Appareil de commande de ballast et appareil ballast pour lampe à décharge à haute intensité
CNPCT/CN2009/073454 2009-08-24

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GB2193393A (en) * 1986-07-23 1988-02-03 To Yuen Starter circuit for fluorescent lamp
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US20060119288A1 (en) * 2004-12-06 2006-06-08 Ayala Vicente A Automatic light dimmer for electronic and magnetic ballasts (fluorescent or HID)
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