WO2006026943A1 - Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung - Google Patents
Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung Download PDFInfo
- Publication number
- WO2006026943A1 WO2006026943A1 PCT/DE2005/001334 DE2005001334W WO2006026943A1 WO 2006026943 A1 WO2006026943 A1 WO 2006026943A1 DE 2005001334 W DE2005001334 W DE 2005001334W WO 2006026943 A1 WO2006026943 A1 WO 2006026943A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure discharge
- discharge lamp
- lamp
- high pressure
- current
- Prior art date
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
- H05B41/26—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
Definitions
- the invention relates to a method for operating a Hochdruckentladungslam ⁇ pe according to the preamble of patent claim 1 and a corresponding Radio ⁇ device and a high-pressure discharge lamp with an operating device.
- illumination systems with the aforementioned lamps emit electromagnetic radiation that causes interference, for example, the television and radio reception in the vehicle. These disturbances are particularly strong during the starting phase of the high-pressure discharge lamp.
- the inventive method for operating a high-pressure discharge lamp with a low-frequency current of alternating polarity and compared to the rated power excessive power during a startup phase of the high-pressure discharge lamp is characterized in that the high-pressure discharge lamp is at least during the start phase supplied with a current whose commutation time is smaller or is 40 microseconds.
- the term commutation time of the current designates the period of time that the current takes to complete the polarity change and thereby either for the first time the value + IJ N, starting from the value -I N in the negative half-wave.
- low-frequency current here refers to a current whose frequency is less than or equal to 1000 hertz.
- the emission of electromagnetic interference during the start phase of the high-pressure discharge lamp, in which the lamp is operated at a multiple of its rated power, is significantly reduced and a corresponding improvement in the electromagnetic compatibility of the lighting system is ensured.
- a disturbance of the television and radio reception in a motor vehicle having high-pressure discharge lamps as light sources in the headlight is avoided by the operating method according to the invention.
- the figures 2 and FIG. 3 shows a comparison of the operating method according to the invention with the operating method according to the prior art.
- the high-pressure discharge lamp is preferably supplied with a current whose commutation time is less than or equal to 40 microseconds in order to improve the electromagnetic compatibility of the lighting system.
- the device according to the invention for operating a high-pressure discharge lamp with a low-frequency current of alternating polarity comprises a transformer equipped with at least one secondary winding for igniting the gas discharge in the high-pressure discharge lamp, wherein the inductance of the at least one secondary winding is dimensioned such that the commutation time of the lamp current the high-pressure discharge lamp is less than or equal to 40 microseconds.
- the dimensioning of the inductance of the at least one secondary winding of the ignition transformer has a decisive influence on the commutation time of the lamp current.
- the electromagnetic interference caused by the illumination system can be sufficiently reduced if the inductance of the at least one secondary winding of the ignition transformer through which the lamp current flows during lamp operation has a value of less than or equal to 1 mH.
- This can be ensured by either that the at least one secondary winding of the ignition transformer has an inductance of at most 1 mH or in series with the at least one Sekundärwick ⁇ a capacitor is connected, which forms an electrical short circuit for the ignition voltage pulses and the during The starting phase of the high-pressure discharge lamp and then causes a partial compensation of the inductance of the at least one secondary winding, so that the effective in the lamp circuit inductance of the at least one secondary winding is less than or equal to 1 ml I.
- the commutation time of the lamp current is at most 40 microseconds.
- the device includes an ignition device, wherein the transformer equipped with the at least one secondary winding is designed as an ignition transformer of the ignition device.
- the ignition device consists of only a few components and has a spatially compact construction, so that it can be arranged in the base of the Hochdruckentladungs ⁇ lamp.
- Figure 1 is a block diagram of the preferred embodiment of the inventive device for operating a Hochdruckentladungslam ⁇ PE
- FIG. 2 shows the time profile of the lamp current and the lamp voltage of the high-pressure discharge lamp during the operating method according to the invention and of the interference signal received by the copper antenna
- FIG. 3 shows the time profile of the lamp current and the lamp voltage of the high-pressure discharge lamp during the conventional operating method and of the interference signal received by the copper antenna
- FIG. 1 schematically shows a simplified block diagram of the operating device for carrying out the operating method according to the invention.
- the Be ⁇ operating device is used to operate a mercury-free metal halide high-pressure discharge lamp with a rated power of 35 watts, which is intended for use as a light source of a motor vehicle headlight. Accordingly, the operating device is powered by the vehicle electrical system voltage of the motor vehicle.
- the operating device for the high-pressure discharge lamp LP includes a voltage converter SW and an ignition device ZV.
- the voltage converter SW serves to supply power to the high-pressure discharge lamp LP and to regulate the lamp power as well as to supply the voltage to the ignition device ZV.
- the ignition device ZV comprises a transformer whose secondary winding N2 is connected in series with the discharge path of the high-pressure discharge lamp LP. During the ignition phase of the high-pressure discharge lamp LP, the transformer serves to supply the high-pressure discharge lamp LP with high-voltage pulses.
- the components of the ignition device ZV can be arranged inside the lamp base or together with the other components of the operating device in a housing near the vehicle headlight.
- the ignition ZV is formed in a known manner as Impulsziindvorraum.
- the voltage converter SW includes in a known manner a full-bridge inverter, in the Brücken ⁇ branch, the high-pressure discharge lamp LP is arranged.
- the ignition device ZV After switching on, the ignition device ZV generates high-voltage pulses for igniting the gas discharge in the high-pressure discharge lamp LP.
- the lamp LP After ignition of the gas discharge, the lamp LP is in the subsequent start phase of the high pressure discharge lamp LP at a multiple of their rated power be ⁇ driven to evaporate in the shortest possible time, the metal halides in the discharge vessel of the high pressure discharge lamp LP and to stimulate light emission.
- the lamp LP is acted upon by the voltage transformer SW with a substantially rectangular current of alternating polarity. The frequency of this current is in the range of 250 hertz to 750 hertz.
- the secondary winding N2 of the transformer is flowed through by the lamp current.
- the secondary winding N2 of the transformer has an inductance of only 0.7 mH.
- the commutation time of the lamp current during the starting phase and also during operation thereafter, as shown in FIG. 2 is only 25 microseconds. Because of this short commutation time, the lighting system emits only a small amount of electromagnetic radiation, which does not lead to any disturbance of the television and radio reception in the motor vehicle.
- FIG. 3 the lamp current is shown using a secondary winding N2 of the transformer with an inductance of 4 mH.
- the commutation time is 84 microseconds.
- the electromagnetic interference caused by the illumination system is considerably stronger than in the case of the operating method according to the invention corresponding to FIG. 2.
- an oscilloscope and a copper antenna are used Length of about 10 cm used.
- the copper antenna is set up for the measurements of the measurement curves 3 and 3 'at a predefined distance from the high-pressure discharge lamp LP, in order to allow a comparison.
- the time profile of the lamp current is shown in measurement curve 1
- the time profile of the lamp voltage during a polarity change wherein the secondary winding N2 here has an inductance of 0.7 mH.
- the time profile of the lamp current is shown in measurement curve 1' and the time profile of the lamp voltage during a polarity change is shown in measurement curve 2 ', wherein the secondary winding N2 here has an inductance of 4 mH.
- the time in microseconds is in each case plotted on the horizontal axis and for the time course of the lamp current immediately before and after a polarity change during the starting phase, that is to say for the measuring phase.
- curve 1 or 1 ' the current in amperes on the vertical axis on the left edge of the aforementioned figures is removed.
- the voltage in volts is plotted on the vertical axis at the right edge of FIGS. 2 and 3.
- the measurement curves 3 and 3 ' which represent the interference signal received by the copper antenna, were not evaluated quantitatively, since the absolute signal strength depends on the setup and properties of the antenna.
- the qualitative comparison of the measured curves 3 and 3 ', which were determined by means of the same experimental setup, is sufficient to detect the reduction of the interference signal by the operating method according to the invention.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/660,704 US20070296349A1 (en) | 2004-08-31 | 2005-07-28 | Method For Operation Of A High Pressure Discharge Lamp Operating Device For A High Pressure Discharge Lamp And High Pressure Discharge Lamp With An Operating Device |
EP05774937A EP1785015A1 (de) | 2004-08-31 | 2005-07-28 | Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung |
JP2007528574A JP2008511950A (ja) | 2004-08-31 | 2005-07-28 | 高圧放電ランプを駆動する方法、高圧放電ランプの駆動装置、および駆動装置を備えた高圧放電ランプ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004042462.4 | 2004-08-31 | ||
DE102004042462A DE102004042462A1 (de) | 2004-08-31 | 2004-08-31 | Verfahren zum Betreiben einer Hochdruckentladungslampe, Betriebsvorrichtung für eine Hochdruckentladungslampe und Hochdruckentladungslampe mit einer Betriebsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006026943A1 true WO2006026943A1 (de) | 2006-03-16 |
Family
ID=35045026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001334 WO2006026943A1 (de) | 2004-08-31 | 2005-07-28 | Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070296349A1 (de) |
EP (1) | EP1785015A1 (de) |
JP (1) | JP2008511950A (de) |
KR (1) | KR20070057149A (de) |
DE (1) | DE102004042462A1 (de) |
WO (1) | WO2006026943A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009053226A1 (de) * | 2007-10-23 | 2009-04-30 | Osram Gesellschaft mit beschränkter Haftung | Verfahren und vorrichtung zum betreiben einer gasentladungslampe |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011132112A1 (en) * | 2010-04-21 | 2011-10-27 | Koninklijke Philips Electronics N.V. | Pulsed operation of a discharge lamp |
WO2013144873A1 (en) | 2012-03-29 | 2013-10-03 | Koninklijke Philips Electronics N.V. | Operating a discharge lamp with reduced electromagnetic interference |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996027278A1 (en) * | 1995-03-01 | 1996-09-06 | Philips Electronics N.V. | Circuit arrangement |
EP0740492A2 (de) * | 1995-04-27 | 1996-10-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Verfahren und Schaltungsanordnung zum Starten und Betreiben einer Entladungslampe |
EP0891123A1 (de) * | 1997-07-11 | 1999-01-13 | MAGNETI MARELLI S.p.A. | Vorrichtung zum Betrieb von Gasentladungslampen, insbesondere für Kraftfahrzeuge |
EP1056315A2 (de) * | 1999-05-26 | 2000-11-29 | Hella KG Hueck & Co. | Schaltung zum Betreiben von Wechselstrom-Hochdruckgasentladungslampen für ein Kraftfahrzeug |
EP1063870A1 (de) * | 1999-06-21 | 2000-12-27 | Valeo Vision | Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern |
EP1326483A1 (de) * | 2002-01-02 | 2003-07-09 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Betriebsgerät und Betriebsverfahren für Hochdruck-Entladungslampen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471268A (en) * | 1982-12-27 | 1984-09-11 | General Electric Company | Lighting unit having power supply with improved switching means |
US7016086B2 (en) * | 2001-08-07 | 2006-03-21 | Kabushiki Kaisha Toshiba | Image forming apparatus |
-
2004
- 2004-08-31 DE DE102004042462A patent/DE102004042462A1/de not_active Withdrawn
-
2005
- 2005-07-28 JP JP2007528574A patent/JP2008511950A/ja not_active Withdrawn
- 2005-07-28 US US11/660,704 patent/US20070296349A1/en not_active Abandoned
- 2005-07-28 EP EP05774937A patent/EP1785015A1/de not_active Withdrawn
- 2005-07-28 KR KR1020077003719A patent/KR20070057149A/ko not_active Application Discontinuation
- 2005-07-28 WO PCT/DE2005/001334 patent/WO2006026943A1/de not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996027278A1 (en) * | 1995-03-01 | 1996-09-06 | Philips Electronics N.V. | Circuit arrangement |
EP0740492A2 (de) * | 1995-04-27 | 1996-10-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Verfahren und Schaltungsanordnung zum Starten und Betreiben einer Entladungslampe |
EP0891123A1 (de) * | 1997-07-11 | 1999-01-13 | MAGNETI MARELLI S.p.A. | Vorrichtung zum Betrieb von Gasentladungslampen, insbesondere für Kraftfahrzeuge |
EP1056315A2 (de) * | 1999-05-26 | 2000-11-29 | Hella KG Hueck & Co. | Schaltung zum Betreiben von Wechselstrom-Hochdruckgasentladungslampen für ein Kraftfahrzeug |
EP1063870A1 (de) * | 1999-06-21 | 2000-12-27 | Valeo Vision | Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern |
EP1326483A1 (de) * | 2002-01-02 | 2003-07-09 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Betriebsgerät und Betriebsverfahren für Hochdruck-Entladungslampen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009053226A1 (de) * | 2007-10-23 | 2009-04-30 | Osram Gesellschaft mit beschränkter Haftung | Verfahren und vorrichtung zum betreiben einer gasentladungslampe |
Also Published As
Publication number | Publication date |
---|---|
KR20070057149A (ko) | 2007-06-04 |
DE102004042462A1 (de) | 2006-03-02 |
US20070296349A1 (en) | 2007-12-27 |
EP1785015A1 (de) | 2007-05-16 |
JP2008511950A (ja) | 2008-04-17 |
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