CN203645897U - Road illumination circuit of three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED - Google Patents
Road illumination circuit of three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED Download PDFInfo
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- CN203645897U CN203645897U CN201420013866.1U CN201420013866U CN203645897U CN 203645897 U CN203645897 U CN 203645897U CN 201420013866 U CN201420013866 U CN 201420013866U CN 203645897 U CN203645897 U CN 203645897U
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- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- 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
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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Abstract
A road illumination circuit of a three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED is formed by a three-phase full wave rectifier and multiple direct-current high-voltage direct-driving LED street lamps. A direct-current high-voltage VH obtained through three-phase alternating-current full wave rectification directly drives the LED street lamps. The LED street lamps are direct-current high-voltage direct-driving LED street lamps. A plurality of homodromous series-connection LEDs are served as loads. A direct-driving integration circuit carries out hierarchical control on the number of the LED loads according to a transient current flowing through the LED loads so as to guarantee that the transient current flowing through the LED loads at any time is basically constant. The road illumination circuit of the three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED possesses the following characteristics that LED driving power supply efficiency is high; a power factor is high; harmonic distortion is small; reliability is high; light stroboscope resistance performance is good; cost is low and so on. Simultaneously, because of the direct-current high-voltage direct-driving LED street lamps, the current flowing through an electric wire and a cable of a road illumination system is small so that cable cost is greatly reduced.
Description
Technical Field
The utility model belongs to the electron field, concretely relates to three-phase alternating current conversion direct current high pressure directly drives LED's road lighting circuit.
Background
The LED is widely applied to road illumination as an advanced light-emitting device, but the existing LED street lamp illumination system is driven by adopting single-phase alternating current commercial power, such as 220V single-phase alternating current, and the LED road illumination technology driven by the single-phase alternating current commercial power has two obvious defects, one is that the high-power road illumination system has large driving current and high cost of required wires and cables; secondly, the efficiency of the driving power supply of the LED lamp is low, and is generally only about 90%.
SUMMERY OF THE UTILITY MODEL
A road lighting circuit for converting three-phase alternating current into direct current high voltage and directly driving LEDs is composed of a three-phase full-wave rectifier and a plurality of direct current high voltage and directly driving LED street lamps. The direct-current high-voltage direct-drive LED street lamp obtained through three-phase alternating current full-wave rectification is characterized in that a plurality of LEDs connected in series in the same direction are used as loads, and a direct-drive integrated circuit is used for controlling the number of the LED loads in a grading mode according to the magnitude of transient current flowing through the LED loads so as to ensure that the transient current flowing through the LED loads at any moment is basically constant.
The utility model discloses a three-phase alternating current conversion direct current high voltage direct drive LED road lighting circuit has the characteristics of high LED drive power efficiency, high power factor, small harmonic distortion, high reliability, good light stroboscopic resistance, low cost and the like; meanwhile, the direct-current high-voltage direct-drive LED street lamp has the advantages that the current flowing through the wires and cables of the road lighting system is extremely small, and the cost of the cables is greatly reduced.
The technical scheme of the utility model as follows:
a road lighting circuit for directly driving LEDs by converting three-phase alternating current into direct current high voltage technically comprises the following components: the LED street lamp consists of a three-phase full-wave rectifier and a plurality of direct-current high-voltage direct-drive LED street lamps, wherein the three-phase full-wave rectifier consists of a three-phase full-wave rectifier bridge and comprises three-phase alternating-current mains supply input ends (Vin 1, Vin2 and Vin 3), a direct-current high-voltage output end VH and a reference ground end GND; the direct-current high-voltage direct-drive LED street lamp consists of a normally-on LED lamp group sub-circuit and a plurality of controlled LED lamp group sub-circuits; the normally-on LED lamp group sub-circuit is a group of LEDs connected in series in the same direction, the current inflow end of the normally-on LED lamp group sub-circuit is the head end of the normally-on LED lamp group sub-circuit, the head end is the direct-current high-voltage output end VH of the direct-current high-voltage direct-drive LED street lamp, and the current outflow end of the normally-on LED lamp group sub-circuit is the tail end of the normally-on LED lamp group sub-circuit; each controlled light emitting diode LED lamp group sub-circuit comprises a direct drive LED integrated circuit U, a current sampling resistor Rs and a group of light emitting diodes LED which are connected in series in the same direction; the direct-drive LED integrated circuit U comprises three ports, namely a switch control port U1, a current sampling port U2 and a zero potential reference port U3 in sequence; in each controlled LED lamp group sub-circuit, the current inflow end of the controlled LED lamp group sub-circuit is the head end of the controlled LED lamp group sub-circuit, the tail end of the LED connected in series in the same direction in the sub-circuit of the controlled LED lamp set is connected with a current sampling port U2 and one end of a current sampling resistor Rs, the other end of the current sampling resistor Rs is connected with a zero potential reference port U3 and is the current outflow end of the sub-circuit of the controlled LED lamp set, the normally-on LED lamp group sub-circuit and the controlled LED lamp group sub-circuits are sequentially connected in series as the tail end of the controlled LED lamp group sub-circuit, and the other end of the current sampling resistor Rs of the last controlled LED lamp group sub-circuit is connected with a zero potential reference port U3 and a reference ground end GND for driving a direct current high voltage; the direct-drive LED street lamps are connected in parallel and are respectively connected with a direct-current high-voltage output end VH and a reference ground end GND of the three-phase full-wave rectifying device through street lamp cables. The LED street lamp is a direct-current high-voltage direct-drive LED street lamp, a plurality of LEDs which are connected in series in the same direction are used as loads, and a direct-drive integrated circuit controls the number of the LED loads in a grading way according to the magnitude of transient current flowing through the LED loads so as to ensure that the transient current flowing through the LED loads is basically constant at any moment.
The specific technical scheme is as follows:
a road lighting circuit for converting three-phase alternating current into direct current high voltage and directly driving LEDs is composed of a three-phase full-wave rectifier unit 1 and 40-200 groups of direct current high voltage and directly driving LED street lamp units 2,
the three-phase full-wave rectifier unit 1 is a three-phase full-wave rectifier bridge B1 with the model number of MDS 100A; maximum current 100A and maximum voltage 1200V of the three-phase full-wave rectifier unit 1; one side of the three-phase full-wave rectifier unit 1 is a three-phase alternating current mains supply input end, and the other side of the three-phase full-wave rectifier unit 1 is a direct current high-voltage output port, wherein the three-phase alternating current mains supply input end consists of a first input port Vin1, a second input port Vin2 and a third input port Vin3, and is respectively connected with three phase lines of a 380V power grid in sequence; the direct-current high-voltage output port consists of a direct-current high-voltage output end VH and a reference ground end GND; the direct-current high-voltage direct-drive LED street lamp units 2 are connected in parallel between a direct-current high-voltage output end VH and a reference ground end GND;
the direct-current high-voltage direct-drive LED street lamp unit 2 is formed by sequentially connecting 1 group of normally-on LED lamp group sub-circuits 21 and 4-12 groups of controlled LED lamp group sub-circuits 22 in series;
the normally-on light-emitting diode LED lamp group sub-circuit 21 consists of 130 light-emitting diodes (LEDs) connected in series in the same direction; the anode of the 1 st light-emitting diode LED in the normally-on LED lamp group sub-circuit 21 is the current inflow end of the normally-on LED lamp group sub-circuit 21, and the cathode of the 130 th light-emitting diode LED in the normally-on LED lamp group sub-circuit 21 is the current outflow end of the normally-on LED lamp group sub-circuit 21;
the sub-circuits 22 of the controlled LED lamp set are respectively composed of 1 direct-drive LED integrated circuit U with model number of TF11 and 1 direct-drive LED integrated circuit U with model number of TF11Current sampling resistor Rs and 1 controlled LED string LEDsControlledsComposition is carried out; wherein,
the direct-drive LED integrated circuit U comprises three ports, namely a switch control port U1, a current sampling port U2 and a zero potential reference port U3 in sequence;
controlled light emitting diode LED string LEDsControlledsThe LED array consists of 10 LEDs connected in series in the same direction; the controlled light emitting diode LED string LEDsControlledsThe anode of the inner 1 st LED is the LED string LEDs of the controlled LEDControlledsCurrent inflow end of controlled Light Emitting Diode (LED) string LEDsControlledsThe cathode of the inner 10 th LED is the controlled LED string LEDsControlledsThe current outflow end of (1);
switch control port U1 and controlled LED string LEDsControlledsIs connected with the current inflow end, and the switch control port U1 is connected with the controlled LED string LEDsControlledsThe connection point between the current inflow terminals of the controlled LED lamp group sub-circuit 22 is the current input terminal of the controlled LED lamp group sub-circuit;
current sampling port U2 and controlled LED string LEDsControlledsIs connected with the current outflow end of the controlled light emitting diode LED string LEDs, and the current sampling port U2 is connected with the controlled light emitting diode LED string LEDsControlledsThe connection node between the current outflow ends of the current sampling resistors is connected with one end of the current sampling resistor Rs; the other end of the current sampling resistor Rs is connected with the zero potential reference port U3, and a connection point between the other end of the current sampling resistor Rs and the zero potential reference port U3 is a current output end of the controlled LED lamp group sub-circuit 22;
the current inflow end of the normally-on LED lamp group sub-circuit 21 is connected with a direct-current high-voltage output end VH; the current outflow end of the normally-on LED lamp group sub-circuit 21 is connected to the current input end of the 1 st controlled LED lamp group sub-circuit 22, the current output end of the 1 st controlled LED lamp group sub-circuit 22 is connected to the current input end of the 2 nd controlled LED lamp group sub-circuit 22, and so on, the current output end of the 5 th controlled LED lamp group sub-circuit 22 is connected to the current input end of the 6 th controlled LED lamp group sub-circuit 22, and the current output end of the 6 th controlled LED lamp group sub-circuit 22 is connected to the reference ground GND.
The utility model has the advantages that:
the utility model relates to a three-phase alternating current conversion direct current high pressure directly drives LED road lighting circuit, it directly drives the LED street lamp by three-phase full wave rectifier and many direct current high pressures and constitutes, wherein three-phase full wave rectifier carries out the full wave rectification to the alternating current commercial power and obtains the direct current high pressure VH that contains certain ripple composition, this direct current high pressure directly drives the power of LED street lamp as direct current high pressure, a plurality of (for example 180 ~ 200) syntropy series connection's in the direct drive LED street lamp LED load, LED lamps and lanterns have and directly drive LED integrated circuit, this integrated circuit carries out the quantity of automatic hierarchical selection LED load to the number of LED load according to the transient current size that flows through the LED load, in order to guarantee to flow through the electric current that the LED load keeps invariable basically throughout. The utility model relates to a three-phase alternating current conversion direct current high voltage direct drive LED road lighting circuit, which has the characteristics of high efficiency of an LED driving power supply, high power factor, small harmonic distortion, high reliability, good light stroboscopic resistance, low cost and the like; meanwhile, the direct-current high-voltage direct-drive LED street lamp has the advantages that the current of the wire and the cable flowing through the road lighting system is extremely small, the cost of the cable is greatly reduced, the cost of the wire and the cable is reduced by more than 50 percent after the technical product is adopted, and the lighting effect of the LED street lamp is improved by about 6 percent. .
Drawings
Fig. 1 is a 10KW three-phase ac full-wave rectification circuit diagram of the present invention.
Fig. 2 is the circuit diagram of the dc high voltage direct-drive LED street lamp of the present invention.
Fig. 3 is a block diagram of the structure and application of the present invention.
Fig. 4 is a circuit diagram of the 1 st embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1
Referring to fig. 4, the direct-drive LED road lighting circuit using three-phase alternating current is composed of a three-phase full-wave rectifier unit 1 and a 100-set direct-current high-voltage direct-drive LED street lamp unit 2,
the three-phase full-wave rectifier unit 1 is a three-phase full-wave rectifier bridge B1 with the model number of MDS 100A; maximum current 100A and maximum voltage 1200V of the three-phase full-wave rectifier unit 1; one side of the three-phase full-wave rectifier unit 1 is a three-phase alternating current mains supply input end, and the other side of the three-phase full-wave rectifier unit 1 is a direct current high-voltage output port, wherein the three-phase alternating current mains supply input end consists of a first input port Vin1, a second input port Vin2 and a third input port Vin3, and is respectively connected with three phase lines of a 380V power grid in sequence; the direct-current high-voltage output port consists of a direct-current high-voltage output end VH and a reference ground end GND; the direct-current high-voltage direct-drive LED street lamp units 2 are connected in parallel between a direct-current high-voltage output end VH and a reference ground end GND;
referring to fig. 4, the direct-current high-voltage direct-drive LED street lamp unit 2 is formed by sequentially connecting 1 group of normally-on light-emitting diode LED lamp group sub-circuits 21 and 6 groups of controlled light-emitting diode LED lamp group sub-circuits 22 in series; the normally-on light-emitting diode LED lamp group sub-circuit 21 consists of 130 light-emitting diodes (LEDs) connected in series in the same direction; the anode of the 1 st light-emitting diode LED in the normally-on LED lamp group sub-circuit 21 is the current inflow end of the normally-on LED lamp group sub-circuit 21, and the cathode of the 130 th light-emitting diode LED in the normally-on LED lamp group sub-circuit 21 is the current outflow end of the normally-on LED lamp group sub-circuit 21; the sub-circuits 22 of the controlled LED lamp set are all 1 typeDirect-drive LED integrated circuit U of TF11, 1 current sampling resistor Rs and 1 controlled light-emitting diode string LEDsControlledsComposition is carried out; the direct-drive LED integrated circuit U comprises three ports, namely a switch control port U1, a current sampling port U2 and a zero potential reference port U3 in sequence; controlled light emitting diode LED string LEDsControlledsThe LED array consists of 10 LEDs connected in series in the same direction; the controlled light emitting diode LED string LEDsControlledsThe anode of the inner 1 st LED is the LED string LEDs of the controlled LEDControlledsCurrent inflow end of controlled Light Emitting Diode (LED) string LEDsControlledsThe cathode of the inner 10 th LED is the controlled LED string LEDsControlledsThe current outflow end of (1); switch control port U1 and controlled LED string LEDsControlledsIs connected with the current inflow end, and the switch control port U1 is connected with the controlled LED string LEDsControlledsThe connection point between the current inflow terminals of the controlled LED lamp group sub-circuit 22 is the current input terminal of the controlled LED lamp group sub-circuit; current sampling port U2 and controlled LED string LEDsControlledsIs connected with the current outflow end of the controlled light emitting diode LED string LEDs, and the current sampling port U2 is connected with the controlled light emitting diode LED string LEDsControlledsThe connection node between the current outflow ends of the current sampling resistors is connected with one end of the current sampling resistor Rs; the other end of the current sampling resistor Rs is connected with the zero potential reference port U3, and a connection point between the other end of the current sampling resistor Rs and the zero potential reference port U3 is a current output end of the controlled LED lamp group sub-circuit 22;
referring to fig. 4, the current inflow end of the normally-on LED lamp set sub-circuit 21 is connected to the dc high-voltage output end VH; the current outflow end of the normally-on LED lamp group sub-circuit 21 is connected to the current input end of the 1 st controlled LED lamp group sub-circuit 22, the current output end of the 1 st controlled LED lamp group sub-circuit 22 is connected to the current input end of the 2 nd controlled LED lamp group sub-circuit 22, and so on, the current output end of the 5 th controlled LED lamp group sub-circuit 22 is connected to the current input end of the 6 th controlled LED lamp group sub-circuit 22, and the current output end of the 6 th controlled LED lamp group sub-circuit 22 is connected to the reference ground GND.
The resistances of the current sampling resistors Rs in the 6 controlled light emitting diode LED sub-circuits in this embodiment are 5 ohms, 5.6 ohms, 6.2 ohms, 6.8 ohms, 7.5 ohms, and 8.2 ohms, respectively.
The parameters of the direct-current high-voltage direct-drive LED street lamp in the embodiment are as follows: an input voltage range, VH =300V to 700V; the output power P =100W (three-phase alternating current input 380V), the power efficiency is more than 95%, the power factor is more than 0.97, the harmonic distortion THD is less than 20%, and the optical frequency flash depth is less than 20%. Compared with the existing structure, the performance is obviously improved.
Compared with a 220V alternating current single-phase alternating current direct-drive LED street lamp system with the same power and road illumination distance, the cost of the wire and the cable is reduced by more than 50%, and the lighting effect of the LED street lamp is improved by about 6%. The range of the converted direct current high voltage of the product is 380 x 1.414 plus or minus 20 percent, namely 429V to 645V.
Example 2
Referring to fig. 1, fig. 1 is a circuit diagram of a 10KW three-phase ac full-wave rectifier of the present invention, wherein B1 is a three-phase full-wave bridge module, and the model is MDS100A, maximum current 100A, and maximum voltage 1200V. In the figure, Vin1, Vin2 and Vin3 are three-phase alternating-current input ends of B1, VH is a direct-current high-voltage output end of B1, and GND is a reference ground end of B1. For a three-phase 380V50HZ AC input, the DC high voltage VH is composed of AC ripple voltage VA and DC voltage VD
The ripple frequency of VA is 300HZ, and VA is equal to
Peak voltage of VA of
Referring to FIG. 2, there is shown2 do the utility model discloses a direct current high pressure directly drives circuit diagram of LED street lamp, wherein LED111 ~ LED130 of syntropy series connection for normally brightening LED banks sub-circuit, LED131 ~ LED140 of syntropy series connection with directly drive LED integrated circuit U and current sampling resistance Rs and constitute the controlled LED sub-circuit of 1 st level, LED181 ~ LED190 of syntropy series connection with directly drive LED integrated circuit U and current sampling resistance Rs and constitute the controlled LED sub-circuit of 6 th level. As shown in fig. 2, the normally-on LED lamp group sub-circuit is connected in series with the 6-stage controlled LED lamp group sub-circuit. The dc high voltage VH from the three-phase rectifier and the reference ground directly drive the LED load, respectively. The LEDs 1-130 are normally-on diodes, and the LEDs 131-190 are respectively connected and short-circuited by 6 direct-drive integrated circuits U according to the transient current flowing through the LED load, so that the current flowing through the LEDs at any moment is basically constant.
Example 3
In fig. 2, the LEDs 1 to LED190 are 3.5V350MA white LEDs, the model of the direct drive integrated circuit U is TF11, and the resistances of the current sampling resistors Rs in the 6-stage controlled light emitting diode LED sub-circuits are 5 ohms, 5.6 ohms, 6.2 ohms, 6.8 ohms, 7.5 ohms and 8.2 ohms, respectively.
The utility model discloses a direct current high pressure directly drives LED street lamp's parameter does: an input voltage range, VH =300V to 700V;
the output power P =100W (three-phase alternating current input 380V), the power efficiency is more than 95%, the power factor is more than 0.97, the harmonic distortion THD is less than 20%, and the optical frequency flash depth is less than 20%.
While the LED used in fig. 2 is a single chip packaged LED with a turn-on voltage of about 3.5V, a multi-chip packaged LED may also be used, except that the number of LEDs used in fig. 2 requires a response reduction. For example, when 2-chip packaged LEDs are used, the turn-on voltage is about 7V, and the number of the LEDs used in fig. 2 is changed from 190 to 95.
Example 4
Referring to fig. 3, fig. 3 is the system structure and application block diagram of the three-phase ac-dc high voltage direct-drive LED road lighting circuit of the present invention. The LED street lamp comprises a three-phase full-wave rectifier, a double-core cable and 100 direct-current high-voltage direct-drive LED street lamps, wherein the power of each LED street lamp is 100W, the total power is 10KW, the length of the cable is kilometer, and the cross section area of a cable copper wire is 10 square millimeters. Compared with the LED street lamp driven by the single-phase alternating current commercial power with the same power, the sectional area of the cable copper wire is reduced by 75%, the cost of the cable copper wire is reduced by about 70%, the luminous efficiency of the LED street lamp is 120 lumens per watt, the power conversion efficiency is greater than 95%, the power factor PF is greater than 0.97, the harmonic distortion is less than 20%, and the optical frequency flash depth is less than 20%.
Claims (2)
1. Three-phase alternating current conversion direct current high pressure directly drives LED's road lighting circuit, its characterized in that: the LED street lamp is characterized by comprising a three-phase full-wave rectifier unit (1) and 40-200 groups of direct-current high-voltage direct-drive LED street lamp units (2), wherein the three-phase full-wave rectifier unit (1) is a three-phase full-wave rectifier bridge B1 with the model number of MDS 100A; the maximum current of the three-phase full-wave rectifier unit (1) is 100A, and the maximum voltage is 1200V; one side of the three-phase full-wave rectifier unit (1) is a three-phase alternating current mains supply input end, and the other side of the three-phase full-wave rectifier unit (1) is a direct current high-voltage output port, wherein the three-phase alternating current mains supply input end consists of a first input port Vin1, a second input port Vin2 and a third input port Vin3, and is respectively connected with three phase lines of a 380V power grid in sequence; the direct-current high-voltage output port consists of a direct-current high-voltage output end VH and a reference ground end GND; the direct-current high-voltage direct-drive LED street lamp units (2) are connected in parallel between a direct-current high-voltage output end VH and a reference ground end GND;
the direct-current high-voltage direct-drive LED street lamp units (2) are formed by sequentially connecting 1 group of normally-on LED lamp group sub-circuits (21) and 4-12 groups of controlled LED lamp group sub-circuits (22) in series;
the normally-on LED lamp group sub-circuit (21) consists of 130 LEDs connected in series in the same direction; the anode of the 1 st light-emitting diode LED in the normally-on LED lamp group sub-circuit (21) is the current inflow end of the normally-on LED lamp group sub-circuit (21), and the cathode of the 130 th light-emitting diode LED in the normally-on LED lamp group sub-circuit (21) is the current outflow end of the normally-on LED lamp group sub-circuit (21);
the sub-circuits (22) of the controlled light emitting diode LED lamp group are respectively composed of 1 direct drive LED integrated circuit U with the model number of TF11, 1 current sampling resistor Rs and 1 controlled light emitting diode string LEDsControlledsComposition is carried out; the direct-drive LED integrated circuit U comprises three ports, namely a switch control port U1, a current sampling port U2 and a zero potential reference port U3 in sequence; controlled light emitting diode LED string LEDsControlledsThe LED array consists of 10 LEDs connected in series in the same direction; the controlled light emitting diode LED string LEDsControlledsThe anode of the inner 1 st LED is the LED string LEDs of the controlled LEDControlledsCurrent inflow end of controlled Light Emitting Diode (LED) string LEDsControlledsThe cathode of the inner 10 th LED is the controlled LED string LEDsControlledsThe current outflow end of (1);
switch control port U1 and controlled LED string LEDsControlledsIs connected with the current inflow end, and the switch control port U1 is connected with the controlled LED string LEDsControlledsIs controlled by the connection point between the current inflow terminalsA current input terminal of a Light Emitting Diode (LED) lamp group sub-circuit (22);
current sampling port U2 and controlled LED string LEDsControlledsIs connected with the current outflow end of the controlled light emitting diode LED string LEDs, and the current sampling port U2 is connected with the controlled light emitting diode LED string LEDsControlledsThe connection node between the current outflow ends of the current sampling resistors is connected with one end of the current sampling resistor Rs; the other end of the current sampling resistor Rs is connected with a zero potential reference port U3, and a connection point between the other end of the current sampling resistor Rs and the zero potential reference port U3 is a current output end of the controlled LED lamp group sub circuit (22); the current inflow end of the normally-on LED lamp group sub-circuit (21) is connected with the direct-current high-voltage output end VH; the current outflow end of the normally-on LED lamp group sub-circuit (21) is connected with the current input end of the 1 st controlled LED lamp group sub-circuit (22), the current output end of the 1 st controlled LED lamp group sub-circuit (22) is connected with the current input end of the 2 nd controlled LED lamp group sub-circuit (22), and so on, the current output end of the 5 th controlled LED lamp group sub-circuit (22) is connected with the current input end of the 6 th controlled LED lamp group sub-circuit (22), and the current output end of the 6 th controlled LED lamp group sub-circuit (22) is connected with the reference ground end GND.
2. The road lighting circuit of claim 1, wherein the three-phase alternating current to direct current high voltage direct drive LED comprises: the number of the direct-current high-voltage direct-drive LED street lamp units (2) is 40-200 groups; each direct-current high-voltage direct-drive LED street lamp unit (2) comprises 1 group of normally-on LED lamp group sub-circuits (21) and 6 groups of controlled LED lamp group sub-circuits (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013866.1U CN203645897U (en) | 2014-01-09 | 2014-01-09 | Road illumination circuit of three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013866.1U CN203645897U (en) | 2014-01-09 | 2014-01-09 | Road illumination circuit of three-phase alternating-current electric-conversion direct-current high-voltage direct-driving LED |
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| CN203645897U true CN203645897U (en) | 2014-06-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244489A (en) * | 2014-08-21 | 2014-12-24 | 国家电网公司 | Energy-saving type LED street lamp drive circuit |
| CN104661411A (en) * | 2014-10-20 | 2015-05-27 | 惠州元晖光电股份有限公司 | LED driving circuit and driving method |
| RU2677595C2 (en) * | 2014-06-20 | 2019-01-17 | Хуавэй Текнолоджиз Ко., Лтд. | Application interface presentation method and apparatus and electronic device |
| JP2019079707A (en) * | 2017-10-25 | 2019-05-23 | 株式会社マキセンサービス | Three-phase LED lighting system |
-
2014
- 2014-01-09 CN CN201420013866.1U patent/CN203645897U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2677595C2 (en) * | 2014-06-20 | 2019-01-17 | Хуавэй Текнолоджиз Ко., Лтд. | Application interface presentation method and apparatus and electronic device |
| CN104244489A (en) * | 2014-08-21 | 2014-12-24 | 国家电网公司 | Energy-saving type LED street lamp drive circuit |
| CN104661411A (en) * | 2014-10-20 | 2015-05-27 | 惠州元晖光电股份有限公司 | LED driving circuit and driving method |
| US9462648B2 (en) | 2014-10-20 | 2016-10-04 | Huizhou Light Engine Limited | Method and arrangement for remotely driving light emitting diodes from a three-phase power source via a single phase cable system |
| CN104661411B (en) * | 2014-10-20 | 2017-03-01 | 惠州元晖光电股份有限公司 | LED drive circuit and driving method |
| JP2019079707A (en) * | 2017-10-25 | 2019-05-23 | 株式会社マキセンサービス | Three-phase LED lighting system |
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