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WO2006114176A1 - Reglage numerique variable de la puissance d'un moyen d'eclairage - Google Patents

Reglage numerique variable de la puissance d'un moyen d'eclairage Download PDF

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Publication number
WO2006114176A1
WO2006114176A1 PCT/EP2006/002792 EP2006002792W WO2006114176A1 WO 2006114176 A1 WO2006114176 A1 WO 2006114176A1 EP 2006002792 W EP2006002792 W EP 2006002792W WO 2006114176 A1 WO2006114176 A1 WO 2006114176A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
lamp
power
parameter
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2006/002792
Other languages
German (de)
English (en)
Inventor
Dirk Dworatzek
Markus Mayrhofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tridonicatco GmbH and Co KG
Original Assignee
Tridonicatco GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tridonicatco GmbH and Co KG filed Critical Tridonicatco GmbH and Co KG
Priority to AU2006239628A priority Critical patent/AU2006239628B2/en
Priority to CN2006800133083A priority patent/CN101164388B/zh
Priority to EP06707645A priority patent/EP1872631A1/fr
Publication of WO2006114176A1 publication Critical patent/WO2006114176A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations

Definitions

  • the present invention relates generally to the digital control of the power of lighting devices, such as may be applied by an electronic ballast (ECG) for gas discharge lamps.
  • ECG electronic ballast
  • Digital control of the power of a light w means in this context that depending on a feedback variable as the actual value and an internally or externally generated setpoint according to an implemented control algorithm, a control variable is generated, which dictates the power of the light source based on a specific parameter.
  • the feedback variable can be, for example, a parameter representing the power of the luminous means, such as, for example, illuminant voltage, luminous flux or luminous power (measured, for example, via photodiodes).
  • ECGs electronic ballasts
  • Gas discharge lamps are known for example from FIG. 1 of WO 02/43087 A2.
  • the present invention has now set itself the task of designing a digital lighting power control more flexible.
  • a method for regulating the power of a luminous means in particular a gas discharge lamp.
  • the parameter representing the lamp power and / or the at least one further parameter are subjected to a threshold discrimination, and regulated as an actual value depending on the result of the threshold discrimination on the power parameter or the further parameter.
  • control may have different dynamic characteristics than in the case of control to the other parameter.
  • the at least one further parameter can reproduce the impedance of the luminous means. It can be controlled to the lamp impedance, if this exceeds a predetermined threshold, and is otherwise regulated to the lamp power reproducing parameters.
  • a control value for the illuminant power can be determined digitally based on a setpoint and the actual value.
  • the invention also relates to a computer software program product that supports a digital control method according to any one of the preceding claims when running on a computing device.
  • the invention relates to a digital circuit configured for use as a digital regulator in a method according to any one of the preceding claims.
  • the invention also relates to a digital control circuit for the power of a luminous means, comprising:
  • an output for a control value indicating the power of the luminous means a first input for the feedback of a parameter representing the power of the luminous means, at least one further input for a further parameter representing a state of the luminous means, and
  • a discriminating and switching device connected to the first or the second input and configured to subject the current value of the parameter applied to the input to a threshold discrimination and to subject the control system to the control system depending on the result of the discrimination Performance parameter or a control to switch to the other parameter.
  • FIG. 1 shows a schematic view of a digital lamp power control according to the invention
  • FIG. 2 shows a detailed view of FIG. 1 with regard to the algorithm implemented in digital controller 1 and the coefficients stored in system memory 6, and FIG
  • Fig. 3 shows the different coefficients used for different applied dimming values.
  • a digital circuit 1 for controlling the power of a connected light source is shown schematically.
  • This digital circuit 1 is part of a control gear for the bulbs.
  • the invention will be explained with reference to an electronic ballast as an example of an operating device and to a gas discharge lamp as an example of a light source. However, the invention can also be applied to other dimmable control gear and lamps
  • the digital circuit 1 generates as a control signal
  • FETs of an inverter 14, by which an applied DC supply voltage V z (DC link voltage) can be converted into an AC voltage with adjustable frequency, which is tapped at the midpoint of the inverter 14. At this midpoint of the
  • Inverter 14 are in a known manner an RC circuit provided with an inductor 13 and a capacitor 18, to which a coupling capacitor 16 is connected in parallel with the lamp 17. Symbolically, it is shown in FIG. 1 that the lamp 17 can be electrically reproduced as a variable impedance resistor.
  • a signal S ⁇ M p which directly or indirectly reflects the lamp impedance.
  • S pow is a signal indicating the lamp power.
  • the lamp power can be reproduced for example by the lamp voltage, the lamp current or else the light power (detected, for example, via photodetectors).
  • the feedback signals S IM P / S pow supplied to the digital control circuit 1 thus represent actual values of the lamp operation and are digitized by AD converters 19, 20.
  • the digitized actual value of the lamp power reproducing signal S pow is compared with a first reference voltage V re fi. This reference voltage represents an internal setpoint value. As shown in FIG.
  • this setpoint value may however depend, in particular, on an externally supplied dimming value.
  • the result of the comparison actual value / setpoint represents the control error e (k), which is supplied to a first digital controller 4.
  • a control algorithm is implemented, which generates a control signal 8 depending on the input signal supplied, by means of the corresponding position of an electronic switch 10 (FET, etc.) an inverter driver 12 is driven, so that the output signal (control signal y (k )) of the controller 4 indicates the operating frequency of the inverter 14 and the operating frequency of the inverter 14 again indicates the lamp power due to the known resonance curve of a gas discharge lamp 17.
  • the control branch using an inverter 14, in which the control variable that is the frequency of the switches of the inverter 14, is only an example.
  • control variables such as light source etc , which can be used at any time in connection with the present invention.
  • the digital circuit 1 has a system controller 2, which processes a program stored as a firmware.
  • the system controller 2 is connected to a system memory 6 and is clocked by a system clock (system clock) 7.
  • the system controller 2 is connected to an interface 3, the dimming signals from the outside, for example, be fed from a bus line forth.
  • the external dimming signals may be analog and / or digital, in any case, the interface 3 transmits to the system controller 2 digital values that reflect the applied dimming signals.
  • the system controller 2 is, for example, firmware configured such that it adjusts characteristics of the controller 4 as a function of the digital values supplied by the interface 3, which thus reproduce the external dimming signals.
  • Properties of the controller 4 can be assigned to specific dimming values in the system memory 6, so that the system controller 2 can read out from the system memory 6 the properties required for the application of a specific dimming value and set the controller 4 accordingly.
  • the controller 4 has properties that can be set on the system controller 2 depending on externally supplied dimming signals.
  • a second regulator 5 can be provided as an actual variable, for example the lamp impedance S IMP , for a further feedback signal.
  • This regulator 5 is supplied with digitized values by the AC converter 19, which thus represent a signal which directly or indirectly reproduces the current lamp impedance S IMP .
  • the controller 5 also generates a control signal 9 according to the control algorithm implemented in it, depending on a comparison of the actual impedance with a reference value for the impedance, which is reproduced in the form of a voltage V REF2 .
  • the electronic switch 10 is driven and thus selected whether the control signal 8 from the first digital controller 4 or the control signal 9 from the second controller 5 is to be used as the actual input signal for the inverter driver 12.
  • the switch controller 11 may be the electronic switch 10 depending on the current value of the
  • Threshold discrimination function with respect to the applied signal equipped.
  • the switch controller 11 only activates the switch 10 for the use of the second regulator 5 when the currently applied, the lamp impedance reproducing Signal S IMP is above a predetermined threshold.
  • the signal impedance S IMP in digital form
  • regulation is made using the lamp impedance S IMP as the feedback magnitude, while otherwise, ie, when the lamp impedance is below a predetermined threshold the lamp power reproducing signal S pow is regulated as feedback size and actual value.
  • the properties of the second controller 5 can be set by the system controller 2 in a comparable manner to the first controller 4 as a function of applied dimming values.
  • the controller 4 and optionally also the controller 5 generate an output signal y (k) depending on an input signal e (k) and possibly also the value of the input signal not only to the currently present time step K, but also previous time steps k-1, k-2, ...
  • the control signal y (k) can thus be calculated using a linear combination consisting of so-called control coefficients all, a21, ... the control difference e (k) present at the current time step K and a series of control differences for preceding time steps e (kl), e (k-2), ...
  • y (k) ai • e (k) + a 2 ⁇ e (kl) + ... a n • e (kn1) + b ⁇ ⁇ y (k) + Jb 2 'y (kl) + ... b m ⁇ y (KML)
  • k is the current time step (clock).
  • m is the maximum number of historical values taken into account.
  • the dynamic behavior of the so-called controlled system i. the lighting means together with the output circuit of the upstream electronics (eg ballast) usually determines the choice of suitable control coefficients. These are chosen so that the closed loop reacts quickly but also stably to changes in the input or to disturbances.
  • the properties of the digital implementation of the control algorithm are set as a function of the currently set dimming value, which is carried out by the system controller 1 as described above, for example
  • the properties of the controller can also be adjusted depending on the current operating state of the lamps in operation.
  • these different operating states may be, for example: - shortly after ignition,
  • control coefficients all, a21, etc. can be changed relatively easily by control signals from the system controller 1.
  • a switchover between different hardware elements would be necessary, which is complicated and expensive and also affects the accuracy of the system.
  • the control properties can be changed such that the type of the selected feedback variable is changed as the actual value. For example, it may be provided that it is then no longer the signal S pow reproducing the lamp power, but another measured variable, such as the impedance of the lamp S IMP, used as the feedback variable to ensure stable operation of the lamp.
  • the values and the number of control coefficients can also be changed at the same time. For this purpose, as mentioned, switching to a second controller 5 may be advantageous.
  • the digital control circuit 1 may be implemented in hardware, software, programmable logic, or any combination thereof.

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un circuit de réglage numérique pour régler la puissance d'un moyen d'éclairage, ce circuit comprenant : une sortie pour une valeur de commande indiquant la puissance du moyen d'éclairage, une première entrée pour le retour d'un paramètre représentant la puissance du moyen d'éclairage, au moins une autre entrée pour un autre paramètre représentant un état du moyen d'éclairage, ainsi qu'un dispositif de discrimination et de commutation relié à la première ou à la deuxième entrée et conçu pour soumettre la valeur réelle du paramètre présent au niveau de l'entrée à une discrimination de seuil et, en fonction du résultat de cette discrimination, pour commuter le système de réglage sur un réglage sur le paramètre de puissance ou un réglage sur l'autre paramètre.
PCT/EP2006/002792 2005-04-22 2006-03-27 Reglage numerique variable de la puissance d'un moyen d'eclairage Ceased WO2006114176A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2006239628A AU2006239628B2 (en) 2005-04-22 2006-03-27 Adjustable digital illuminating means output control
CN2006800133083A CN101164388B (zh) 2005-04-22 2006-03-27 可调节的数字照明装置输出控制
EP06707645A EP1872631A1 (fr) 2005-04-22 2006-03-27 Reglage numerique variable de la puissance d'un moyen d'eclairage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005018764.1 2005-04-22
DE200510018764 DE102005018764A1 (de) 2005-04-22 2005-04-22 Einstellbare digitale Leuchtmittelleistungsregelung

Publications (1)

Publication Number Publication Date
WO2006114176A1 true WO2006114176A1 (fr) 2006-11-02

Family

ID=36933617

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/002792 Ceased WO2006114176A1 (fr) 2005-04-22 2006-03-27 Reglage numerique variable de la puissance d'un moyen d'eclairage

Country Status (5)

Country Link
EP (1) EP1872631A1 (fr)
CN (1) CN101164388B (fr)
AU (1) AU2006239628B2 (fr)
DE (1) DE102005018764A1 (fr)
WO (1) WO2006114176A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391360A1 (fr) * 1989-04-03 1990-10-10 Zumtobel Aktiengesellschaft Ballast pour une lampe de décharge à chauffage direct
US5600211A (en) * 1994-09-16 1997-02-04 Tridonic Bauelemente Gmbh Electronic ballast for gas discharge lamps
US6060843A (en) * 1996-01-26 2000-05-09 Tridonic Bauelemente Gmbh Method and control circuit for regulation of the operational characteristics of gas discharge lamps
US6316886B1 (en) * 1997-03-04 2001-11-13 Tridonic Bauelemente Gmbh Method and device for controlling the operational performance of gas discharge lamps
US20040051481A1 (en) * 2002-08-30 2004-03-18 Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh Method for operating fluorescent lamps and ballast

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391360A1 (fr) * 1989-04-03 1990-10-10 Zumtobel Aktiengesellschaft Ballast pour une lampe de décharge à chauffage direct
US5600211A (en) * 1994-09-16 1997-02-04 Tridonic Bauelemente Gmbh Electronic ballast for gas discharge lamps
US6060843A (en) * 1996-01-26 2000-05-09 Tridonic Bauelemente Gmbh Method and control circuit for regulation of the operational characteristics of gas discharge lamps
US6316886B1 (en) * 1997-03-04 2001-11-13 Tridonic Bauelemente Gmbh Method and device for controlling the operational performance of gas discharge lamps
US20040051481A1 (en) * 2002-08-30 2004-03-18 Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh Method for operating fluorescent lamps and ballast

Also Published As

Publication number Publication date
AU2006239628A1 (en) 2006-11-02
DE102005018764A1 (de) 2006-10-26
AU2006239628B2 (en) 2011-09-15
CN101164388B (zh) 2012-05-23
CN101164388A (zh) 2008-04-16
EP1872631A1 (fr) 2008-01-02

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