WO2008116496A1 - Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température - Google Patents

Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température Download PDF

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Publication number
WO2008116496A1
WO2008116496A1 PCT/EP2007/052895 EP2007052895W WO2008116496A1 WO 2008116496 A1 WO2008116496 A1 WO 2008116496A1 EP 2007052895 W EP2007052895 W EP 2007052895W WO 2008116496 A1 WO2008116496 A1 WO 2008116496A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
operating device
circuit
lamp
pressure discharge
Prior art date
Application number
PCT/EP2007/052895
Other languages
German (de)
English (en)
Inventor
Peter Krummel
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
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 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Priority to PCT/EP2007/052895 priority Critical patent/WO2008116496A1/fr
Publication of WO2008116496A1 publication Critical patent/WO2008116496A1/fr

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
    • H05B41/26—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
    • H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2986—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions

Definitions

  • the present invention relates to a control gear for low-pressure discharge lamps, which regulates the lamp power temperature-dependent above a maximum operating temperature in order to optimize the efficiency of the overall system.
  • the maximum permissible operating temperature of a ballast for low-pressure discharge lamps is determined by the maximum operating temperature of certain individual components.
  • the critical temperature results essentially from the ambient temperature, the lamp temperature and the self-heating of the ballast.
  • the self-heating is essentially determined by the power loss generated in the ballast.
  • the power reduction should only be carried out from a predefinable temperature threshold (operating temperature value).
  • the present invention is therefore based on the object to provide a Radio-pressure discharge lamps and a lighting system, which allows a more effective and efficient operation of these low-pressure discharge lamps, even in relatively confined space conditions.
  • safe operation with a relatively high system efficiency should be ensured even at relatively high temperatures at the site of the low-pressure discharge lamps.
  • the simplest and most cost-effective ballast for low-pressure discharge lamps is provided, which continuously reduces the lamp power from a nominal service temperature value to a lower power at a higher temperature.
  • circuit arrangement that performs a temperature-dependent power reduction, has a very simple and inexpensive construction. It is also advantageous that the circuit arrangement can be implemented with little effort in conventional ballasts.
  • ballast according to the invention results from the features of the subclaims.
  • FIG. 1 Schematic block diagram of the operating device according to the invention.
  • Fig. 2 Diagram illustrating the relationship between the relative luminous flux ⁇ of a lighting system according to the invention and the relative network power P ⁇ .
  • FIG. 3 Diagram showing the time profile of the ambient temperature Tu, the interior temperature T 1 , the temperature sensor temperature T NTC and the tube wall temperature of the low-pressure discharge lamp T t as a function of time.
  • the operating device has a rectifier circuit with a line filter 1, whose output voltage is fed via a DC voltage converter 2 operating as a reactive current compensation.
  • the intermediate circuit voltage applied to the output capacitor 21 of the voltage converter 2 is input to an inverter 3.
  • the inverter and its output power are controlled by a microcontroller included in the operating unit.
  • the microcontroller contains an analog / digital converter 71, a lamp power control 72, a setpoint input device 75 and a frequency generating device 76, which controls the driver circuit 9 not contained in the microcontroller.
  • the microcontroller also contains a temperature control device 74 and a storage device 73 for a maximum temperature.
  • a power value P ist of the lamp circuit is input to the microcontroller, converted to analog / digital and then fed to the lamp power control.
  • the lamp power control also receives a power setpoint from an interface circuit 6.
  • This interface circuit receives control commands from a lighting control bus and generates therefrom a lamp power set point that is input to the setpoint setter.
  • the setpoint specification device 75 generates a lamp power setpoint signal for the lamp power control 72.
  • the setpoint setting device 75, the lamp power control 72 and the frequency generation device 76 are preferably implemented as a software program in the microcontroller 7.
  • a temperature detection circuit 8 generates an analog temperature actual value T ist with a temperature sensor R NTC . This is converted analog / digital and supplied to the temperature control 74. Here, the value is compared with a stored value representing the maximum operating temperature. When the maximum value is exceeded, the power setting is lowered according to the degree of exceeding the maximum temperature.
  • the temperature sensor is preferably a temperature-dependent resistor, in this case a thermistor. This ensures a simple and inexpensive construction of the temperature detection circuit 8.
  • the lamp power is preferably controlled by the frequency of the inverter. This ensures a simple and robust control loop. Because the inverter is not operated at a fixed frequency, is also the electromagnetic compatibility improved.
  • the lighting system can always be operated with the optimum overall efficiency for this temperature.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

La présente invention concerne un appareil de commande pour des lampes à décharge basse pression, comprenant un circuit redresseur qui présente un filtre de réseau, un élément de compensation de courant réactif (2), un onduleur, un circuit de charge et un élément de régulation de puissance. Selon cette invention, une valeur réelle Pist est transférée à l'élément de régulation du circuit des lampes, un circuit de détection de température mesure la température de l'appareil de commande, puis cette température est entrée dans un régulateur de température qui réduit, en fonction de la température, la consigne de valeur théorique pour la puissance des lampes au-delà d'une température maximale prédéfinissable enregistrée dans une mémoire de température.
PCT/EP2007/052895 2007-03-27 2007-03-27 Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température WO2008116496A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/052895 WO2008116496A1 (fr) 2007-03-27 2007-03-27 Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/052895 WO2008116496A1 (fr) 2007-03-27 2007-03-27 Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température

Publications (1)

Publication Number Publication Date
WO2008116496A1 true WO2008116496A1 (fr) 2008-10-02

Family

ID=38740328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/052895 WO2008116496A1 (fr) 2007-03-27 2007-03-27 Appareil de commande et système d'éclairage pour des lampes à décharge basse pression à régulation de puissance en fonction de la température

Country Status (1)

Country Link
WO (1) WO2008116496A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045555A1 (fr) * 2010-10-05 2012-04-12 Tridonic Gmbh & Co Kg Appareil de commande à température critique réglable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490330A1 (fr) * 1990-12-07 1992-06-17 Tridonic Bauelemente GmbH Circuit de commande de lampes à décharge
US20030001517A1 (en) * 2001-07-02 2003-01-02 Piaskowski Andrew D. Converter for converting an AC power main voltage to a voltage suitable for driving a lamp
US20050099142A1 (en) * 2003-11-12 2005-05-12 Cottongim David E. Thermal protection for lamp ballasts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490330A1 (fr) * 1990-12-07 1992-06-17 Tridonic Bauelemente GmbH Circuit de commande de lampes à décharge
US20030001517A1 (en) * 2001-07-02 2003-01-02 Piaskowski Andrew D. Converter for converting an AC power main voltage to a voltage suitable for driving a lamp
US20050099142A1 (en) * 2003-11-12 2005-05-12 Cottongim David E. Thermal protection for lamp ballasts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012045555A1 (fr) * 2010-10-05 2012-04-12 Tridonic Gmbh & Co Kg Appareil de commande à température critique réglable

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