EP0856240A1 - Montage pour l'allumage de lampes luminescentes a gaz a haute pression - Google Patents

Montage pour l'allumage de lampes luminescentes a gaz a haute pression

Info

Publication number
EP0856240A1
EP0856240A1 EP97915283A EP97915283A EP0856240A1 EP 0856240 A1 EP0856240 A1 EP 0856240A1 EP 97915283 A EP97915283 A EP 97915283A EP 97915283 A EP97915283 A EP 97915283A EP 0856240 A1 EP0856240 A1 EP 0856240A1
Authority
EP
European Patent Office
Prior art keywords
gas discharge
pressure gas
discharge lamp
transformer
circuit
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.)
Withdrawn
Application number
EP97915283A
Other languages
German (de)
English (en)
Inventor
Ingo Gorille
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0856240A1 publication Critical patent/EP0856240A1/fr
Withdrawn legal-status Critical Current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
    • H05B41/382—Controlling the intensity of light during the transitional start-up phase
    • 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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • 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 circuit arrangement for igniting a high-pressure gas discharge lamp of the type defined in the preamble of claim 1.
  • Bridge circuit in which two controlled switching transistors are arranged in at least one branch, and in which the high-pressure gas discharge lamp is supplied with ignition and combustion energy via the bridge branch of the bridge circuit.
  • the high-pressure gas discharge lamp is located directly in the bridge branch of a bridge circuit designed as a capacitive half-bridge, a choke coil being arranged in series with the lamp. Furthermore, the secondary winding of an ignition transformer is provided in series with this arrangement.
  • the supply current of the lamp is changed by changing the duty cycle Switching transistors regulated and changed in a certain way when starting.
  • Supply current pulses are e.g. for sodium vapor lamps about 300 Hz, which is superimposed on a higher frequency voltage between 30 and 70 kHz.
  • the start duty cycle is set to about 0.7 and the operating duty cycle is set to about 0.5.
  • both the start and the operation are carried out in the so-called resonance mode.
  • the starting frequency i.e. when the lamp is ignited, is approximately 80 kHz and the burning or operating frequency is approximately 8 to 16 kHz.
  • the lamp is operated in the so-called wobbling direct current mode, ie the direct current is always reversed.
  • the polarity reversal frequency is about 400 Hz.
  • the lamp is ignited by a separate pulse igniter.
  • the lamps used are so-called xenon lamps or metal halide lamps, the high pressure of which is around 80 bar. A high voltage of 24 kV is required to ignite the arc in view of the worst tolerance conditions necessary.
  • the voltage required for burning is around 85 volts.
  • circuit arrangement for operating a high-pressure gas discharge lamp In the application "Circuit arrangement for operating a high-pressure gas discharge lamp" from the applicant, which is filed simultaneously with the present application, it is provided that the primary winding of a transformer is arranged in the bridge branch of a bridge circuit, an oscillating circuit is arranged on the secondary side of the transformer, the high-pressure gas discharge lamp from the secondary-side resonant circuit is supplied with combustion and ignition energy, and both the combustion mode and the ignition process are operated at high frequency, the frequency of the ignition being selected to be significantly higher than the frequency in the combustion mode.
  • the transmission ratio between the secondary and primary winding of the transformer is chosen so that a compromise in the
  • the circuit arrangement according to the invention for igniting a high-pressure gas discharge lamp with the characterizing features of claim 1 has the advantage that the components are small in size and dimension
  • the transmission ratio ü z of the transformer for igniting the high-pressure gas discharge lamp is increased compared to the transmission ratio ü 3 of the operating case during operation of the high-pressure gas discharge lamp, ie for the ignition event, ü z > ü B or ü z >> ü B -
  • a portion of the turns of the primary winding of the transformer is short-circuited to increase the transmission ratio ü 2 when firing.
  • the short-circuiting is carried out with the aid of a controlled transistor.
  • the transistor for short-circuiting a part of the primary winding receives its control pulses from a control logic or a microcontroller, which also controls the controlled switching transistors of the bridge circuit.
  • Fig. 1 shows schematically the block diagram of a circuit arrangement designed according to the invention
  • Fig. 2 shows schematically in a diagram the course of the
  • a circuit arrangement designed according to the invention schematically shows the block diagram of the circuit arrangement designed according to the invention.
  • High-pressure gas discharge lamp 1 is connected with its electrodes 2 and 3 to the two ends 4 and 5 of the secondary winding 6 of a transformer 7.
  • a capacitor 8 is connected in parallel with the high-pressure gas discharge lamp 1 between the electrodes 2 and 3. From the capacitance of the capacitor 8 and the
  • Inductance of the secondary winding 6 of the transformer 7 is formed on the secondary side of an oscillating circuit through which the high-pressure gas discharge lamp 1 is supplied with combustion and ignition energy.
  • the primary winding 9 of the transformer 7 lies in the bridge branch of a bridge circuit 10.
  • the bridge circuit 10 shown is a so-called capacitive half bridge, in which two controlled switching transistors 11 and 12 are arranged in one branch, here in the left one.
  • the connection point 13 of the two transistors 11 and 12 forms one connection of the bridge branch.
  • two capacitors 14 and 15 are arranged in the other branch, here in the right.
  • the connection point 16 of the two capacitors 14 and 15 forms the second connection of the bridge branch.
  • This bridge branch lies between the
  • Connections 13 and 16 the aforementioned primary winding 9 of the transformer 7.
  • Switching transistor 11 and capacitor 14 are on Connection 17 connected to one another and connected to the positive pole + of a supply voltage source, for example the battery with the direct voltage U B of a motor vehicle.
  • Switching transistor 12 and capacitor 15 are connected to one another at connection 18 and connected to earth potential 0 of the supply voltage source.
  • a microcontroller 19 which embodies the control logic of the circuit arrangement, has its connections 20 and 21 connected to the positive pole + or the ground potential 0 of the supply voltage U B. Control outputs 22 and 23 of the microcontroller 19 are routed to the control inputs of the associated controlled switching transistors 11 and 12, respectively.
  • a controlled transistor 30 is provided, the control connection 31 of which is connected to the microcontroller 19 embodying the control logic.
  • the switched path of the transistor 30 lies between the bridge connection 13 and a connection point 32 within the primary winding 9 of the
  • connection point 32 divides the primary winding 9 into a part 9K, which can be short-circuited during ignition by the conductive control of transistor 30, and a part 9Z, which is then effective during ignition.
  • Transistor 30 is blocked, the entire primary winding 9, ie 9K + 9Z, is effective.
  • Burning operation of the high pressure gas discharge lamp 1 worked.
  • the primary winding 9 of the transformer is set so that a relatively small ü B arises, which is sufficient for the firing operation and allows the components to be optimized for this case. In this case, the transistor 30 is blocked and the entire primary winding 9 is effective. In order for the high-pressure gas discharge lamp 1 to ignite, the desired higher or even significantly higher
  • Time is specified in ⁇ s and the lamp voltage U L is shown in volts or in kV on the vertical axis.
  • the voltage U L rises from the value 0 in sinusoidal oscillations corresponding to the
  • High-pressure gas discharge lamp necessary ignition voltage reached.
  • High pressure gas discharge lamp from e.g. approx. 85 volts, namely the operating voltage required to maintain the arc.
  • the switch-on time is

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un montage servant à l'allumage d'une lampe luminescente à gaz à haute pression (1). Ledit montage comprend un circuit en pont (10) dans lequel deux transistors de commutation (11, 12) commandés sont disposés dans au moins une branche. La lampe luminescente à gaz à haute pression (1) est alimentée, par l'intermédiaire de la branche de pont (13-16) du circuit en pont (10), en énergie d'allumage et de décharge, l'enroulement primaire (9) d'un transformateur (7) étant disposé dans cette branche de pont. Un circuit oscillant (6, 8) est placé sur l'enroulement secondaire (6) dudit transformateur, la lampe luminescente à gaz à haute pression (1) étant alimentée en énergie de décharge et d'allumage par ledit circuit oscillant (6, 8) monté sur le côté secondaire. La décharge et l'allumage se font à une haute fréquence. Le rapport de transformation (üZ) du transformateur (7) est augmenté, par rapport au rapport de transformation (üB) existant lorsque ladite lampe luminescente à gaz (1) fonctionne, pour allumer la lampe luminescente à gaz à haute pression (1). Cette augmentation se fait, en particulier, par la mise en court circuit, commandée par un transistor (30), d'une partie (9K) de l'enroulement primaire (9) du transformateur (7) pendant l'allumage.
EP97915283A 1996-03-06 1997-02-12 Montage pour l'allumage de lampes luminescentes a gaz a haute pression Withdrawn EP0856240A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19608658A DE19608658C1 (de) 1996-03-06 1996-03-06 Schaltungsanordnung zum Zünden und Betreiben einer Hochdruckgasentladungslampe
DE19608658 1996-03-06
PCT/DE1997/000256 WO1997033456A1 (fr) 1996-03-06 1997-02-12 Montage pour l'allumage de lampes luminescentes a gaz a haute pression

Publications (1)

Publication Number Publication Date
EP0856240A1 true EP0856240A1 (fr) 1998-08-05

Family

ID=7787395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97915283A Withdrawn EP0856240A1 (fr) 1996-03-06 1997-02-12 Montage pour l'allumage de lampes luminescentes a gaz a haute pression

Country Status (5)

Country Link
EP (1) EP0856240A1 (fr)
JP (1) JPH11504758A (fr)
KR (1) KR19990008296A (fr)
DE (1) DE19608658C1 (fr)
WO (1) WO1997033456A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2346273B (en) * 1999-01-20 2003-10-29 Nordson Corp Power supply including a lamp ignitor circuit
US6504313B1 (en) * 2000-10-13 2003-01-07 Koninklijke Philips Electronics N.V. Ignition scheme for electronic HID ballast
WO2006043248A1 (fr) * 2004-10-20 2006-04-27 Koninklijke Philips Electronics, N.V. Circuit allumeur resonnant pour lampe a ballast de capacite de sortie variable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574223A (en) * 1984-01-12 1986-03-04 Hid Systems, Inc. Fast warmup ballast for HID lamps
FR2607996B1 (fr) * 1986-12-04 1989-03-10 Perche Ets Procede et dispositif pour l'allumage de lampes a decharge
US4904905A (en) * 1988-08-05 1990-02-27 American Sterilizer Company Dual resonant frequency arc lamp power supply
DE9111890U1 (de) * 1991-09-24 1991-11-14 Fender, Manfred, Prof. Dipl.-Ing., 6556 Wöllstein Schaltungsanordnung zur regelbaren Speisung einer Gasentladungslampe hoher Strahlungsleistung
FR2693074B1 (fr) * 1992-06-26 1994-08-19 Valeo Vision Dispositif pour une lampe à décharge destiné à équiper un projecteur de véhicule et projecteur équipé d'un tel dispositif.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9733456A1 *

Also Published As

Publication number Publication date
JPH11504758A (ja) 1999-04-27
WO1997033456A1 (fr) 1997-09-12
DE19608658C1 (de) 1997-05-07
KR19990008296A (ko) 1999-01-25

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