WO2009053226A1 - Procédé et dispositif pour faire fonctionner une lampe à décharge dans un gaz - Google Patents

Procédé et dispositif pour faire fonctionner une lampe à décharge dans un gaz Download PDF

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Publication number
WO2009053226A1
WO2009053226A1 PCT/EP2008/063141 EP2008063141W WO2009053226A1 WO 2009053226 A1 WO2009053226 A1 WO 2009053226A1 EP 2008063141 W EP2008063141 W EP 2008063141W WO 2009053226 A1 WO2009053226 A1 WO 2009053226A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
discharge lamp
gas discharge
commutation
voltage
Prior art date
Application number
PCT/EP2008/063141
Other languages
German (de)
English (en)
Inventor
Michael Bönigk
Grigorios Tsilimis
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
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 Osram Gesellschaft mit beschränkter Haftung filed Critical Osram Gesellschaft mit beschränkter Haftung
Publication of WO2009053226A1 publication Critical patent/WO2009053226A1/fr

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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
    • H05B41/26—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
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Definitions

  • the invention relates to a method for operating a gas discharge lamp, in particular a high-pressure discharge lamp, which is operated with a maximum current in the light starting, a nominal current at rated power, and with a wobbling DC.
  • gas discharge lamps have increasingly been used instead of incandescent lamps because of their high efficiency.
  • high-pressure discharge lamps are more difficult to handle with respect to their mode of operation than low-pressure discharge lamps, and the electronic operating devices for these lamps are therefore more expensive.
  • commutation is considered to be the process in which the polarity of the voltage changes, and therefore, a large current or voltage change occurs. In a substantially symmetrical operation of the lamp is at the middle of the commutation of the voltage or current zero crossing. It should be noted that the voltage commutation usually always runs faster than the current commutation.
  • Aus The boundary layers of Ac-arcs at HID- electrodes: phase resolved electrical measurements and optical observations', O. Langenscheidt et al. , J. Phys D 40 (2007), pp.
  • the problem of changing the bow approach mode mainly relates to gas discharge lamps, which have comparatively large electrodes compared to similar lamps of the same nominal power. Typically, lamps are then overloaded when "immediate light" is required, - A -
  • the inventive method operates a gas discharge lamp having a wobbling direct current, a maximum current I ruri _ up in the starting of the light, a nominal current I stea - d y - state at rated power, and a rate of current rise - during commutation, where dt is the current slew rate - the following relationship applies: dt
  • the electrodes are oversized, so that the lamps can be applied during startup with higher current (starting current I ruri _ up ) than in the nominal mode (operating current Jstaedy-state).
  • starting current I ruri _ up is such Lamp when steady state, ie burning for a few minutes, operating at specified rated power, and having an average lamp voltage approximately in the middle of the specified tolerance range.
  • I ruri - up is the current which, in the fast start of the light with maximum power, may occur as specified by the maximum. This current may only be exceeded shortly after the dielectric breakdown in the lamp for a few 10 ⁇ s.
  • the method is particularly suitable for mercury-free gas discharge lamps. Particularly in mercury-free automotive discharge lamps, which have larger sized electrodes due to the lower lamp voltage compared to the mercury-containing lamps, the inventive method is very well suited.
  • the method can also be used for mercury-containing gas discharge lamp.
  • the quotient / run-up is preferably between 5 and 9 staedystate
  • the ratio - ⁇ _ J ⁇ _- J 36 ⁇ staedy- state mercury-containing lamps between 6 and 7.5.
  • the quotient run-up is advantageously between 2, 5 and 6.5. staedy -state
  • the ratio run - up in state - of - the - art mercury - free lamps is particularly advantageous between 3 and 5.
  • the invention also relates to a device for operating a gas discharge lamp with a method having the aforementioned features.
  • FIG. 1 A voltage at a mercury-free automotive lamp during the commutation process in a prior art operating method.
  • FIG. 2 An illustration of the lamp voltage
  • FIG. 3 An illustration of the current curves for differently set current gradients during the commutation, in particular after the current zero crossing.
  • Fig. 4 A representation of the corresponding voltage curves for the different current gradients.
  • FIG. 5 An illustration of the voltage and current curves for a commutation interruption with a low-current phase.
  • FIG. 6 A temporally better resolved excerpt from the voltage curve of Fig. 5 with different commutation phases.
  • FIG. 7 The schematic circuit diagram of a substitute load with which the method according to the invention can be measured.
  • FIG. 1 shows the voltage curve of a gas discharge lamp over time with oversized electrodes with a prior art method of operation which, during commutation, does not remain in the punctiform arc approach mode due to the too cold electrodes, but at the zero crossing of FIG punctiform changes in the diffuse Bogenansatz Anlagenmit. Due to this, the voltage initially increases during commutation, since the cathode which is too cold can supply sufficient current only through a higher voltage. After a short time, typically less than 1 ⁇ s, there will again be a transition from the diffuse to the punctiform arc approach mode during the cathodic phase. At time 0 ⁇ s, the arc approach changes from the punctiform to the diffused arc approach mode. wise.
  • this voltage is higher than the maximum voltage of the operating device, this results in a current dip 25. This is reflected in a drop 28 of the amount of light emitted. If the gas discharge lamp remains in the state of diffuse arc projection for a longer time, then the voltage is in the maximum possible range 23 of the operating device during the entire time between two commutations. Resulting from this also causes a permanent current dip 27, which leads to a significant reduction 29 of the light output of the gas discharge lamp. Under unfavorable circumstances, this can lead to the point where the gas discharge lamp extinguishes.
  • the gas discharge lamp given by K over-power state-state, therefore applies to the current increase - after dt of the commutation: AT ⁇
  • FIGS. 3 and 4 the current and the corresponding voltage waveforms of three different electronic control gear in conjunction with the mercury-free high-pressure discharge lamp are shown. They are shown in FIGS. 3 (current) and 4 (voltage).
  • the three electronic operating devices each have a different commutation dynamics, i. various large possible current gradients - which differ in each dt
  • the signal curves of the operating device with the lowest commutation dynamics, ie with the lowest producible - are shown in the signals 31 (current) dt and 41 (voltage). Due to the low current gradient, the current profile of all devices shown here is the thinnest.
  • the voltage curve is also flatter overall than in the comparison curves, but shows shortly before (time -0.5 microseconds) and especially shortly after (time 0.5 microseconds) the zero crossing of the commutation each a significant increase in voltage resulting from the mode change from the punctiform arch approach to the diffuse arch approach. After the voltage increase, the discharge arc remains unstable for a further 3 ⁇ s, which results from an unstable mode change.
  • the second operating device has a comparison
  • the third operating device according to the invention which works with the method according to the invention, has a great momentum with respect to the commutation, which manifests itself in a current gradient of 0.115 A / ⁇ s.
  • a typical mercury-containing lamp may be based on the following values:
  • Fig. 5 shows a typical commutation curve of a high-pressure discharge lamp with a commutation interruption.
  • the voltage provided by the operating device is the driving force. Therefore, the available voltage change rate is a measure of the current rate of change described above which affects the quality of the commutation. This is especially true when the lamp has passed into a low-current phase after commutation. Then, the rate of voltage change and the maximum level of the voltage of the operating equipment during the low-current load is the decisive criterion for a clean and complete current transfer of the electrodes.
  • the available voltage change speed of the operating device can be determined via the commutation interruption.
  • This commutation interruption can occur in the case of real lamps, but is preferably simulated by a substitute load 110, as shown in FIG.
  • the normal current phase corresponds to the stationary current during normal lamp operation.
  • a low-current phase occurs in the case of a greatly inflated voltage at the actual lamp.
  • the lamp has a finite electrical impedance which loads the (commutation) voltage delivered by the operating device.
  • FIG. 6 shows a temporally better resolved section from the voltage curve of FIG. 5 with different commutation phases.
  • phases 0-1 are used both for specifying values for achieving optimum commutation (phases 0-1) and for specifying values for resuming a normal commutation Lamp operation when high lamp impedance and low current phases occur (phases 2-3).
  • the phases 0 and 1 are run through each time a high-pressure discharge lamp commutates. It is irrelevant whether the lamp commutes clean or causes problems due to a low-current phase.
  • the phases 2 and 3 are added, which map the low current and the associatedientsüberhö ⁇ Hung.
  • the loading is utilization of the commutating voltage by the values of a real mercury-free high-pressure discharge lamp gege ⁇ ben that is simulated by the dimensioning of the dummy load 110 in Fig. 7.
  • the dimensioning of this replacement load 110 in FIG. 7 is designed, for example, for a mercury-free high-pressure discharge lamp.
  • the dimensioning of the dummy load 110 is to adapt the ent ⁇ speaking lamp type.
  • the replacement load 110 results in different high load values of a connected electronic operating device 100. This is connected to the replacement load 110 via an ignition transformer, which is represented by an RL element 101.
  • the taps of Messabgriffes 103 are the two lines to which normally the high pressure discharge lamp is connected.
  • the equivalent load consists of an RC element with load resistors for normal current phases and low-current phases and a controlled switch S. This is switched on and off in accordance with the input signal from the operating device 100 in order to simulate the normal or low-current phases during the commutation.
  • the switch S is closed, so that essentially the resistance R2 acts as a load resistance. If a low-current phase is to be simulated, the load resistor S is closed, so that substantially the resistor R3 acts as a load resistor.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour faire fonctionner une lampe à décharge dans un gaz, qui fonctionne avec un courant maximal Irun-up au démarrage de l'éclairage, et avec un courant nominal Isteady-state à la puissance nominale. La lampe à décharge dans un gaz fonctionne avec un courant alternatif rectangulaire, et la vitesse d'augmentation du courant (dI/dt) pendant la commutation de la lampe à décharge dans un gaz satisfait à la relation suivante : (dI/dt) ≥ 0,022 × Irun-up/Isteady-state.
PCT/EP2008/063141 2007-10-23 2008-10-01 Procédé et dispositif pour faire fonctionner une lampe à décharge dans un gaz WO2009053226A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710050633 DE102007050633A1 (de) 2007-10-23 2007-10-23 Verfahren und Vorrichtung zum Betreiben einer Gasentladungslampe
DE102007050633.5 2007-10-23

Publications (1)

Publication Number Publication Date
WO2009053226A1 true WO2009053226A1 (fr) 2009-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/063141 WO2009053226A1 (fr) 2007-10-23 2008-10-01 Procédé et dispositif pour faire fonctionner une lampe à décharge dans un gaz

Country Status (3)

Country Link
DE (1) DE102007050633A1 (fr)
TW (1) TW200932063A (fr)
WO (1) WO2009053226A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148768A2 (fr) * 2000-04-14 2001-10-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Stabilisation dans le contrôle de lampes à décharge
EP1326483A1 (fr) * 2002-01-02 2003-07-09 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dispositif et procedé d'operation pour une lampe à décharge à haute pression
US20030160577A1 (en) * 2001-05-16 2003-08-28 Toshiyuki Noguchi Discharge lamp lighting device and system comprising it
WO2006026943A1 (fr) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Procede pour faire fonctionner une lampe a decharge a haute pression, dispositif permettant de faire fonctionner une lampe a decharge a haute pression et lampe a decharge a haute pression pourvue d'un dispositif de ce type

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008375A1 (de) 1990-03-15 1991-09-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
DE10021537A1 (de) 2000-05-03 2001-11-08 Philips Corp Intellectual Pty Verfahren und Vorrichtung zum Betreiben einer Gasentladungslampe
JP4426132B2 (ja) 2000-07-26 2010-03-03 ハリソン東芝ライティング株式会社 高圧放電ランプ点灯方法、高圧放電ランプ点灯装置および照明装置
CN1568639B (zh) 2001-10-12 2012-05-23 皇家飞利浦电子股份有限公司 驱动气体放电灯的方法和设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148768A2 (fr) * 2000-04-14 2001-10-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Stabilisation dans le contrôle de lampes à décharge
US20030160577A1 (en) * 2001-05-16 2003-08-28 Toshiyuki Noguchi Discharge lamp lighting device and system comprising it
EP1326483A1 (fr) * 2002-01-02 2003-07-09 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dispositif et procedé d'operation pour une lampe à décharge à haute pression
WO2006026943A1 (fr) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Procede pour faire fonctionner une lampe a decharge a haute pression, dispositif permettant de faire fonctionner une lampe a decharge a haute pression et lampe a decharge a haute pression pourvue d'un dispositif de ce type

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DE102007050633A1 (de) 2009-04-30
TW200932063A (en) 2009-07-16

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