EP1589790A2 - Method for operating a high pressure discharge lamp - Google Patents
Method for operating a high pressure discharge lamp Download PDFInfo
- Publication number
- EP1589790A2 EP1589790A2 EP05007780A EP05007780A EP1589790A2 EP 1589790 A2 EP1589790 A2 EP 1589790A2 EP 05007780 A EP05007780 A EP 05007780A EP 05007780 A EP05007780 A EP 05007780A EP 1589790 A2 EP1589790 A2 EP 1589790A2
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- European Patent Office
- Prior art keywords
- pressure discharge
- supply current
- discharge lamp
- electrical power
- lamp
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- 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.)
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Classifications
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- 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
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0064—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for processing of food articles
- G07F17/0078—Food articles which need to be processed for dispensing in a hot or cooked condition, e.g. popcorn, nuts
- G07F17/0085—Food articles which for processing need cooking in a liquid, e.g. oil, water
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F9/00—Details other than those peculiar to special kinds or types of apparatus
- G07F9/10—Casings or parts thereof, e.g. with means for heating or cooling
Definitions
- the invention relates to a method for operating a high-pressure discharge lamp according to the preamble of claim 1.
- a method of operating a high pressure discharge lamp by means of a bipolar Supply current is for example on pages 217 and 218 in the book "Operating Devices and Circuits for Electric Lamps" by C.H. Storm and E. Klein, Siemens AG, 6th revised edition 1992 described.
- This passage discloses the operation of a high pressure discharge lamp with a bipolar supply current, which has a substantially rectangular course over time.
- High pressure discharge lamps require a for their proper operation defined energetic household. If your energy balance is disturbed, then it happens Changes in the performance of the high pressure discharge lamp, for example to shorten the lamp life due to electrode erosion or Flicker caused by an undefined discharge arc approach.
- the high pressure discharge lamp with a bipolar supply current the zero crossing of the supply current in its polarity change a critical Operating phase of the lamp.
- high-pressure discharge lamps with comparatively thick electrodes which have a high thermal conductivity, such as in mercury-free metal halide high pressure discharge lamps, causes the increased heat transfer during the zero crossing of the supply current a correspondingly greater cooling of the lamp electrodes.
- the power fed into the high pressure discharge lamp may increase insufficient heating of the lamp electrodes before the polarity change lead the supply current. Accordingly, the lamp electrodes a reduced emissivity and that available after the polarity change Stress over the entire system, that is above the discharge arc and the Electrodes, is not enough to maintain the corresponding current flow as soon as possible. At the high pressure discharge lamp can be therefore, observe a flicker of the discharge arc. This applies in particular to heavily aged lamps.
- the method according to the invention for operating a high-pressure discharge lamp having a bipolar supply current and a predetermined electrical power is characterized in that an additional electrical power is supplied to the high-pressure discharge lamp at periodically recurring time intervals immediately after the zero crossing of the supply current, the time-averaged total power corresponds to the predetermined electrical power.
- the periodically recurring time intervals during which the additional electric power for the high-pressure discharge lamp is provided are arranged in time to the polarity change of the supply current of the high-pressure discharge lamp.
- these time intervals are arranged not only immediately after the polarity change but additionally also immediately before the polarity change or the zero crossing of the supply current.
- the additional power supply before the polarity change of the supply current allows a correspondingly stronger system heating to account for the cooling of the lamp electrodes during the zero crossing of the supply current and to counteract the resulting disadvantages listed above.
- the decisive additional power supply after the polarity change of the supply current is used for the fastest possible heating of the cooled lamp electrodes by the operation of the so-called electrode drop voltage and an associated higher power consumption.
- the duration of the periodically recurring time intervals for the additional power supply is preferably in each case 1 percent to 40 percent of a half-period duration of the supply current.
- the instantaneous value of the additional electrical power impressed during the periodically recurring time intervals of the high-pressure discharge lamp is preferably in the range from 1 percent to 300 percent of the value of the predetermined electrical power.
- the operating method according to the invention also enables dimming, that is, a brightness control of the high pressure discharge lamp. So can for the dimming operation the time-averaged overall performance of the high pressure discharge lamp be set a value which is lower than the rated power of the high pressure discharge lamp.
- the operating method according to the invention is based on a heavily aged mercury-free metal halide high pressure discharge lamp described for use in the headlight of a motor vehicle is provided, and has a rated power of 35 watts.
- This lamp has a Discharge vessel made of quartz glass with therein ionizable filling and arranged therein electrodes for generating a light emitting gas discharge.
- the ionizable filling contains xenon as well as halogen compounds of the metals Sodium, scandium, zinc and indium.
- This mercury-free metal halide high-pressure discharge lamp is by means of a control gear, the underlying circuitry on the Pages of the above-cited book is described, with a bipolar supply current fed, the time course is substantially rectangular.
- the frequency this rectangular bipolar supply current of the lamp as well as their in phase rectangular bipolar supply voltage is approx. 250 hertz.
- the timing of the supply current and the supply voltage as well as the instantaneous electrical power The lamp is shown in its usual units of amperes, volts and watts.
- the Timeline is scaled in units of milliseconds.
- the duration of a half-period the supply current and the supply voltage is 2 milliseconds each.
- the supply current is for the most part a positive or negative half-cycle about 0.5 amps or - 0.5 amperes.
- Only immediately before and after the polarity change of the supply current and the supply voltage take the significantly higher amounts, so that meanwhile an increased Power entry is made in the lamp.
- the duration of the increased power entry is 11 before and after the polarity change of the supply current Percent of a half period of the supply current, that is about 0.22 milliseconds.
- the instantaneous electrical power consumption of the lamp has during the largest Part of the positive and negative half periods of the supply current one almost constant value of about 30 watts.
- the supply current is the lamp during a time interval of each 0.22 milliseconds impressed an electrical power of about 95 watts and immediately after each polarity change of the supply current of the lamp during a time interval of also 0.22 milliseconds each an electric Power of about 80 watts impressed.
- the over the entire period or over a period of the supply current averaged power consumption of Lamp is about 35 watts.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Hochdruckentladungslampe gemäß des Oberbegriffs des Patentanspruchs 1.The invention relates to a method for operating a high-pressure discharge lamp according to the preamble of claim 1.
Ein Verfahren zum Betreiben einer Hochdruckentladungslampe mittels eines bipolaren Versorgungsstroms ist beispielsweise auf den Seiten 217 und 218 in dem Buch "Betriebsgeräte und Schaltungen für elektrische Lampen" von C.H. Sturm und E. Klein, Siemens AG, 6. neubearbeitete Auflage 1992 beschrieben. Diese Textstelle offenbart den Betrieb einer Hochdruckentladungslampe mit einem bipolaren Versorgungsstrom, der einen im wesentlichen rechteckförmigen zeitlichen Verlauf besitzt.A method of operating a high pressure discharge lamp by means of a bipolar Supply current is for example on pages 217 and 218 in the book "Operating Devices and Circuits for Electric Lamps" by C.H. Storm and E. Klein, Siemens AG, 6th revised edition 1992 described. This passage discloses the operation of a high pressure discharge lamp with a bipolar supply current, which has a substantially rectangular course over time.
Hochdruckentladungslampen benötigen für ihren ordnungsgemäßen Betrieb einen definierten energetischen Haushalt. Ist ihr Energiehaushalt gestört, so kommt es zu Veränderungen im Betriebsverhalten der Hochdruckentladungslampe, beispielsweise zu einer Verkürzung der Lampenlebensdauer aufgrund von Elektrodenerosion oder Flickern verursacht durch einen undefinierten Entladungsbogenansatz. Bei dem Betrieb der Hochdruckentladungslampe mit einem bipolaren Versorgungsstrom stellt der Nulldurchgang des Versorgungsstroms bei seinem Polaritätswechsel eine kritische Betriebsphase der Lampe dar. Insbesondere bei Hochdruckentladungslampen mit vergleichsweise dicken Elektroden, die eine hohe Wärmeleitfähigkeiten besitzen, wie zum Beispiel bei quecksilberfreien Halogen-Metalldampf-Hochdruckentladungslampen, bewirkt der erhöhte Wärmetransport während des Nulldurchgangs des Versorgungsstroms eine entsprechend stärkere Abkühlung der Lampenelektroden.High pressure discharge lamps require a for their proper operation defined energetic household. If your energy balance is disturbed, then it happens Changes in the performance of the high pressure discharge lamp, for example to shorten the lamp life due to electrode erosion or Flicker caused by an undefined discharge arc approach. In the operation the high pressure discharge lamp with a bipolar supply current the zero crossing of the supply current in its polarity change a critical Operating phase of the lamp. Especially in high-pressure discharge lamps with comparatively thick electrodes, which have a high thermal conductivity, such as in mercury-free metal halide high pressure discharge lamps, causes the increased heat transfer during the zero crossing of the supply current a correspondingly greater cooling of the lamp electrodes.
In diesem Fall kann die in die Hochdruckentladungslampe eingespeiste Leistung zu einer unzureichenden Aufheizung der Lampenelektroden vor dem Polaritätswechsel des Versorgungsstroms führen. Dementsprechend besitzen die Lampenelektroden eine verringerte Emissionsfähigkeit und die nach dem Polaritätswechsel verfügbare Spannung über dem Gesamtsystem, das heißt über dem Entladungsbogen und den Elektroden, reicht nicht aus, um den entsprechenden Stromfluss aufrecht zu erhalten bzw. schnellstmöglich bereitzustellen. An der Hochdruckentladungslampe lässt sich daher ein Flickern des Entladungsbogens beobachten. Dieses gilt insbesondere für stark gealterte Lampen.In this case, the power fed into the high pressure discharge lamp may increase insufficient heating of the lamp electrodes before the polarity change lead the supply current. Accordingly, the lamp electrodes a reduced emissivity and that available after the polarity change Stress over the entire system, that is above the discharge arc and the Electrodes, is not enough to maintain the corresponding current flow as soon as possible. At the high pressure discharge lamp can be therefore, observe a flicker of the discharge arc. This applies in particular to heavily aged lamps.
Es ist die Aufgabe der Erfindung, das oben beschriebene Problem während des Betriebs der Hochdruckentladungslampen mit einem bipolaren, zeitlich periodischen Versorgungsstrom zu vermeiden. Insbesondere soll auch ein zuverlässiges Betriebsverfahren für quecksilberfreie Halogen-Metalldampf-Hochdruckentladungslampen bereitgestellt werden.It is the object of the invention to solve the problem described above during operation the high-pressure discharge lamps with a bipolar, temporally periodic To avoid supply current. In particular, should also be a reliable operating method for mercury-free metal halide high pressure discharge lamps to be provided.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den abhängigen Patentansprüchen beschrieben.This object is achieved by the features of claim 1 solved. Particularly advantageous embodiments of the invention are in the dependent Claims described.
Überraschenderweise konnte festgestellt werden, dass nicht das Vorheizen der Elektroden vor der Kommutierung, das ist der Polaritätswechsel des Versorgungs- bzw. Lampenstroms, von entscheidender Bedeutung ist, sondern die Bereitstellung bzw. Einspeisung einer Überlast unmittelbar nach der Kommutierung. Das Einspeisen einer zusätzlichen Leistung unmittelbar nach der Kommutierung gewährleistet, insbesondere durch die Bedienung der durch die Elektrode verursachten Spannungserhöhung (sogenannte Elektrodenfallspannung), welche einen höheren Leistungseintrag in die Elektrode und somit eine schnellere Aufheizung bzw: einen schnelleren Übergang in einen stabilen Zustand zur Folge hat, einen flickerfreier Betrieb der Hochdruckentladungslampe. Falls diese Elektrodenfallspannung nicht vollständig bedient werden kann, dauert die Aufheizung sehr lange und die Elektrode bleibt über diesen Zeitraum in einem Modus niedrigem Stromflusses mit mehr oder weniger undefiniertem Brennfleckansatz, entsprechender Entladungsbogenbewegung sowie verstärkter Elektrodenerosion. Surprisingly, it could be stated that not the preheating of the electrodes before the commutation, that is the polarity change of the supply or Lamp current, is crucial, but the provision or Infeed of an overload immediately after commutation. Feeding ensures additional performance immediately after commutation, in particular by the operation of the voltage increase caused by the electrode (so-called electrode drop voltage), which has a higher power input into the electrode and thus a faster heating or: a faster Transition into a stable state has the consequence, a flicker-free operation of High pressure discharge lamp. If this electrode drop voltage is not complete can be operated, the heating takes a long time and the electrode remains over this period in a low current flow mode with more or less undefined focal spot approach, corresponding discharge arc movement and reinforced electrode erosion.
Das erfindungsgemäße Verfahren zum Betreiben einer Hochdruckentladungslampe
mit einem zeitlich periodisch verlaufenden, bipolaren Versorgungsstrom und einer
vorgegebenen elektrischen Leistung zeichnet sich dadurch aus, dass der Hochdruckentladungslampe
in periodisch wiederkehrenden Zeitintervallen unmittelbar nach
dem Nulldurchgang des Versorgungsstroms eine zusätzliche elektrische Leistung
zugeführt wird, wobei die zeitlich gemittelte Gesamtleistung der vorgegebenen
elektrischen Leistung entspricht. Die periodisch wiederkehrenden Zeitintervalle,
während denen die zusätzliche elektrische Leistung für die Hochdruckentladungslampe
bereitgestellt wird, sind zeitnah zu dem Polaritätswechsel des
Versorgungsstroms der Hochdruckentladungslampe angeordnet. Vorteilhafterweise
sind diese Zeitintervalle nicht nur unmittelbar nach dem Polaritätswechsel sondern
zusätzlich auch unmittelbar vor dem Polaritätswechsel bzw. dem Nulldurchgang des
Versorgungsstroms angeordnet. Die zusätzliche Leistungszufuhr vor dem
Polaritätswechsel des Versorgungsstroms erlaubt eine entsprechend stärkere
Systemaufheizung um der Abkühlung der Lampenelektroden während des
Nulldurchgangs des Versorgungsstroms Rechnung zu tragen und den daraus
resultierenden, oben aufgeführten Nachteilen entgegen zu wirken. Die entscheidende
zusätzliche Leistungszufuhr nach dem Polaritätswechsel des Versorgungsstroms
dient zur schnellst möglichen Aufheizung der abgekühlten Lampenelektroden durch
die Bedienung der sogenannten Elektrodenfallspannung und einer damit
verbundenen höheren Leistungsaufnahme.
Die Dauer der periodisch wiederkehrenden Zeitintervalle für die zusätzliche Leistungszufuhr
beträgt vorzugsweise jeweils 1 Prozent bis 40 Prozent einer Halbperiodendauer
des Versorgungsstromes. Der Momentanwert der zusätzlichen elektrischen
Leistung, die während der periodisch wiederkehrenden Zeitintervalle der Hochdruckentladungslampe
eingeprägt wird, liegt vorzugsweise im Bereich von 1 Prozent
bis 300 Prozent des Wertes der vorgegebenen elektrischen Leistung.The method according to the invention for operating a high-pressure discharge lamp having a bipolar supply current and a predetermined electrical power is characterized in that an additional electrical power is supplied to the high-pressure discharge lamp at periodically recurring time intervals immediately after the zero crossing of the supply current, the time-averaged total power corresponds to the predetermined electrical power. The periodically recurring time intervals during which the additional electric power for the high-pressure discharge lamp is provided are arranged in time to the polarity change of the supply current of the high-pressure discharge lamp. Advantageously, these time intervals are arranged not only immediately after the polarity change but additionally also immediately before the polarity change or the zero crossing of the supply current. The additional power supply before the polarity change of the supply current allows a correspondingly stronger system heating to account for the cooling of the lamp electrodes during the zero crossing of the supply current and to counteract the resulting disadvantages listed above. The decisive additional power supply after the polarity change of the supply current is used for the fastest possible heating of the cooled lamp electrodes by the operation of the so-called electrode drop voltage and an associated higher power consumption.
The duration of the periodically recurring time intervals for the additional power supply is preferably in each case 1 percent to 40 percent of a half-period duration of the supply current. The instantaneous value of the additional electrical power impressed during the periodically recurring time intervals of the high-pressure discharge lamp is preferably in the range from 1 percent to 300 percent of the value of the predetermined electrical power.
Das erfindungsgemäße Betriebsverfahren ermöglicht auch ein Dimmen, das heißt, eine Helligkeitsregelung der Hochdruckentladungslampe. So kann für den Dimmbetrieb die zeitlich gemittelte Gesamtleistung der Hochdruckentladungslampe auf einen Wert eingestellt werden, der geringer ist als die Nennleistung der Hochdruckentladungslampe.The operating method according to the invention also enables dimming, that is, a brightness control of the high pressure discharge lamp. So can for the dimming operation the time-averaged overall performance of the high pressure discharge lamp be set a value which is lower than the rated power of the high pressure discharge lamp.
Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:
- Figur 1
- Den zeitlichen Verlauf des Stroms, der Spannung und der elektrischen Leistung einer quecksilberfreien Halogen-Metalldampf-Hochdruckentladungslampe bei Betrieb mit ihrer Nennleistung
- Figur 2
- Den zeitlichen Verlauf des Stroms, der Spannung und der elektrischen Leistung der quecksilberfreien Halogen-Metalldampf-Hochdruckentladungslampe bei Betrieb mit geringerer Leistung als ihrer Nennleistung
- FIG. 1
- The time course of the current, the voltage and the electrical power of a mercury-free metal halide high-pressure discharge lamp when operating at their rated power
- FIG. 2
- The time course of the current, voltage and electrical power of the mercury-free metal halide high pressure discharge lamp operating at lower power than their rated power
Mittels der Figuren 1 und 2 wird das erfindungsgemäße Betriebsverfahren anhand einer stark gealterten quecksilberfreien Halogen-Metalldampf-Hochdruckentladungslampe beschrieben, die für den Einsatz in dem Scheinwerfer eines Kraftfahrzeugs vorgesehen ist, und eine Nennleistung von 35 Watt besitzt. Diese Lampe besitzt ein Entladungsgefäß aus Quarzglas mit darin eingeschlossener ionisierbarer Füllung sowie darin angeordneten Elektroden zum Erzeugen einer lichtemittierenden Gasentladung. Die ionisierbare Füllung enthält Xenon sowie Halogenverbindungen der Metalle Natrium, Scandium, Zink und Indium.By means of Figures 1 and 2, the operating method according to the invention is based on a heavily aged mercury-free metal halide high pressure discharge lamp described for use in the headlight of a motor vehicle is provided, and has a rated power of 35 watts. This lamp has a Discharge vessel made of quartz glass with therein ionizable filling and arranged therein electrodes for generating a light emitting gas discharge. The ionizable filling contains xenon as well as halogen compounds of the metals Sodium, scandium, zinc and indium.
Diese quecksilberfreie Halogen-Metalldampf-Hochdruckentladungslampe wird mittels eines Betriebsgerätes, dessen zugrundeliegende Schaltungsanordnung auf den Seiten des oben zitierten Buches beschrieben ist, mit einem bipolaren Versorgungsstrom gespeist, dessen Zeitverlauf im wesentlichen rechteckförmig ist. Die Frequenz dieses rechteckförmigen bipolaren Versorgungsstromes der Lampe sowie ihrer dazu in Phase befindlichen rechteckförmigen bipolaren Versorgungsspannung beträgt ca. 250 Hertz. In den Abbildungen der Figur 1 sind der zeitliche Verlauf des Versorgungsstroms und der Versorgungsspannung sowie die momentane elektrische Leistung der Lampe in ihren üblichen Einheiten Ampere, Volt und Watt dargestellt. Die Zeitachse ist in Einheiten von Millisekunden skaliert. Die Dauer einer Halbperiode des Versorgungsstroms und der Versorgungsspannung beträgt jeweils 2 Millisekunden. Der Versorgungsstrom beträgt während des größten Teils einer positiven bzw. negativen Halbperiode ungefähr 0,5 Ampere bzw. - 0,5 Ampere. Analog dazu beträgt die Versorgungsspannung während es größten Teils einer positiven bzw. negativen Halbperiode ungefähr 50 Volt bzw. -50 Volt. Nur unmittelbar vor und nach dem Polaritätswechsel des Versorgungsstroms und der Versorgungsspannung nehmen die vorgenannten Größen erheblich höhere Beträge an, so dass währenddessen ein erhöhter Leistungseintrag in die Lampe erfolgt. Die Zeitdauer des erhöhten Leistungseintrags beträgt vor und nach dem Polaritätswechsel des Versorgungsstroms jeweils 11 Prozent einer Halbperiode des Versorgungsstroms, das heißt ca. 0,22 Millisekunden. Die momentane elektrische Leistungsaufnahme der Lampe besitzt während des größten Teils der positiven und negativen Halbperioden des Versorgungsstroms einen nahezu konstanten Wert von ca. 30 Watt. Unmittelbar vor jedem Polaritätswechsel des Versorgungsstroms wird der Lampe während eines Zeitintervalls von jeweils 0,22 Millisekunden eine elektrische Leistung von ungefähr 95 Watt eingeprägt und unmittelbar nach jedem Polaritätswechsel des Versorgungsstroms wird der Lampe während eines Zeitintervalls von ebenfalls jeweils 0,22 Millisekunden eine elektrische Leistung von ungefähr 80 Watt eingeprägt. Die über den gesamten Zeitraum bzw. über eine Periode des Versorgungsstroms gemittelte Leistungsaufnahme der Lampe beträgt ungefähr 35 Watt.This mercury-free metal halide high-pressure discharge lamp is by means of a control gear, the underlying circuitry on the Pages of the above-cited book is described, with a bipolar supply current fed, the time course is substantially rectangular. The frequency this rectangular bipolar supply current of the lamp as well as their in phase rectangular bipolar supply voltage is approx. 250 hertz. In the figures of Figure 1, the timing of the supply current and the supply voltage as well as the instantaneous electrical power The lamp is shown in its usual units of amperes, volts and watts. The Timeline is scaled in units of milliseconds. The duration of a half-period the supply current and the supply voltage is 2 milliseconds each. The supply current is for the most part a positive or negative half-cycle about 0.5 amps or - 0.5 amperes. The same applies the supply voltage during most of a positive or negative Half-period about 50 volts or -50 volts. Only immediately before and after the polarity change of the supply current and the supply voltage take the significantly higher amounts, so that meanwhile an increased Power entry is made in the lamp. The duration of the increased power entry is 11 before and after the polarity change of the supply current Percent of a half period of the supply current, that is about 0.22 milliseconds. The instantaneous electrical power consumption of the lamp has during the largest Part of the positive and negative half periods of the supply current one almost constant value of about 30 watts. Immediately before each polarity change the supply current is the lamp during a time interval of each 0.22 milliseconds impressed an electrical power of about 95 watts and immediately after each polarity change of the supply current of the lamp during a time interval of also 0.22 milliseconds each an electric Power of about 80 watts impressed. The over the entire period or over a period of the supply current averaged power consumption of Lamp is about 35 watts.
In den Abbildungen der Figur 2 sind für dieselbe quecksilberfreie Halogen-Metalldampf-Hochdruckentladungslampe der zeitliche Verlauf des Versorgungsstroms, der Versorgungsspannung und der momentanen elektrischen Leistung dargestellt für den Fall, dass diese Lampe im gedimmten Zustand, das heißt mit einer mittleren Leistungsaufnahme von nur 25 Watt anstelle mit ihrer Nennleistung von 35 Watt betrieben wird. Die momentane elektrische Leistungsaufnahme der Lampe besitzt während des größten Teils der positiven und negativen Halbperioden des Versorgungsstroms einen nahezu konstanten Wert von ca. 20 Watt. Unmittelbar vor und nach jedem Polaritätswechsel des Versorgungsstroms wird der Lampe während eines Zeitintervalls von jeweils 0,22 Millisekunden eine elektrische Leistung von bis zu 100 Watt eingeprägt. Die über den gesamten Zeitraum gemittelte Leistungsaufnahme der Lampe beträgt ungefähr 25 Watt.In the figures of Figure 2 are for the same mercury-free metal halide high-pressure discharge lamp the time course of the supply current, the supply voltage and the instantaneous electrical power shown in the event that this lamp is in the dimmed state, that is with a medium Power consumption of only 25 watts instead of with their rated power of 35 Watt is operated. The current electrical power consumption of the lamp has during most of the positive and negative half periods of the supply current a nearly constant value of about 20 watts. Immediately before and after each polarity change of the supply current, the lamp is turned on during one Time interval of 0.22 milliseconds each electrical power up to 100 watts impressed. The average power consumption over the entire period the lamp is about 25 watts.
Eine Dimmung dieser Lampe in Standardbetriebsweise oder aber nur eine Leistungs-überhöhung unmittelbar vor dem Nulldurchgang ihres Versorgungsstroms würde zum Verlöschen der Lampe führen.A dimming of this lamp in standard mode or only a power increase immediately before the zero crossing of its supply current to extinguish the lamp.
Claims (5)
dadurch gekennzeichnet, dass der Hochdruckentladungslampe in periodisch wiederkehrenden Zeitintervallen unmittelbar nach dem Nulldurchgang des Versorgungsstroms eine zusätzliche elektrische Leistung zugeführt wird, wobei die zeitlich gemittelte Gesamtleistung der vorgegebenen elektrischen Leistung entspricht.Method for operating a high-pressure discharge lamp with a time-periodically running, bipolar supply current and a predetermined electrical power,
characterized in that the high-pressure discharge lamp in periodically recurring time intervals immediately after the zero crossing of the supply current, an additional electric power is supplied, wherein the time-averaged total power of the predetermined electric power corresponds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004020397 | 2004-04-23 | ||
| DE102004020397A DE102004020397A1 (en) | 2004-04-23 | 2004-04-23 | Method for operating a high pressure discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1589790A2 true EP1589790A2 (en) | 2005-10-26 |
| EP1589790A3 EP1589790A3 (en) | 2006-03-15 |
Family
ID=34934925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05007780A Withdrawn EP1589790A3 (en) | 2004-04-23 | 2005-04-08 | Method for operating a high pressure discharge lamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050237004A1 (en) |
| EP (1) | EP1589790A3 (en) |
| JP (1) | JP2005310797A (en) |
| KR (1) | KR20060047430A (en) |
| CN (1) | CN1691868A (en) |
| CA (1) | CA2503187A1 (en) |
| DE (1) | DE102004020397A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007060035A1 (en) | 2007-12-05 | 2009-06-10 | Osram Gesellschaft mit beschränkter Haftung | High pressure discharge lamp i.e. mercury-free xenon-high pressure discharge lamp, operating method for automotive-application, supplies additional electrical power to high pressure discharge lamp based on detection of lamp flickers |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101385400B (en) * | 2006-02-20 | 2012-09-26 | 皇家飞利浦电子股份有限公司 | Method and driving unit for driving a gas discharge lamp |
| KR101040827B1 (en) * | 2006-10-30 | 2011-06-14 | 주식회사 엘지화학 | Low gloss graft copolymer, preparing method thereof and thermoplastic resin composition therefrom |
| WO2011042830A2 (en) | 2009-10-09 | 2011-04-14 | Koninklijke Philips Electronics N.V. | High efficiency lighting assembly |
| DE102010028838A1 (en) | 2010-05-11 | 2011-11-17 | Osram Gesellschaft mit beschränkter Haftung | Method and device for operating a discharge lamp |
| WO2012062346A1 (en) * | 2010-11-08 | 2012-05-18 | Osram Ag | Circuit arrangement and method for rapid commutation during square wave operation of high-pressure discharge lamps |
| WO2012156205A1 (en) * | 2011-05-13 | 2012-11-22 | Osram Ag | Method for operating a high-pressure discharge lamp with a variable power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5608294A (en) * | 1994-06-22 | 1997-03-04 | U.S. Philips Corporation | High pressure lamp operating circuit with suppression of lamp flicker |
| US6172469B1 (en) * | 1994-11-08 | 2001-01-09 | Robert Bosch Gmbh | Device for operating a gas discharge lamp |
| US6232725B1 (en) * | 1998-12-17 | 2001-05-15 | U.S. Philips Corporation | Circuit arrangement for operating a high-pressure discharge lamp |
| EP1176855A2 (en) * | 2000-07-26 | 2002-01-30 | Harison Toshiba Lighting Corporation | High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| US20030160577A1 (en) * | 2001-05-16 | 2003-08-28 | Toshiyuki Noguchi | Discharge lamp lighting device and system comprising it |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230971A (en) * | 1978-09-07 | 1980-10-28 | Datapower, Inc. | Variable intensity control apparatus for operating a gas discharge lamp |
| US5428268A (en) * | 1993-07-12 | 1995-06-27 | Led Corporation N.V. | Low frequency square wave electronic ballast for gas discharge |
| US5483127A (en) * | 1994-01-19 | 1996-01-09 | Don Widmayer & Associates, Inc. | Variable arc electronic ballast with continuous cathode heating |
-
2004
- 2004-04-23 DE DE102004020397A patent/DE102004020397A1/en not_active Withdrawn
-
2005
- 2005-04-08 EP EP05007780A patent/EP1589790A3/en not_active Withdrawn
- 2005-04-14 US US11/105,446 patent/US20050237004A1/en not_active Abandoned
- 2005-04-19 CA CA002503187A patent/CA2503187A1/en not_active Abandoned
- 2005-04-22 KR KR1020050033661A patent/KR20060047430A/en not_active Application Discontinuation
- 2005-04-25 JP JP2005127168A patent/JP2005310797A/en active Pending
- 2005-04-25 CN CNA2005100669134A patent/CN1691868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5608294A (en) * | 1994-06-22 | 1997-03-04 | U.S. Philips Corporation | High pressure lamp operating circuit with suppression of lamp flicker |
| US6172469B1 (en) * | 1994-11-08 | 2001-01-09 | Robert Bosch Gmbh | Device for operating a gas discharge lamp |
| US6232725B1 (en) * | 1998-12-17 | 2001-05-15 | U.S. Philips Corporation | Circuit arrangement for operating a high-pressure discharge lamp |
| EP1176855A2 (en) * | 2000-07-26 | 2002-01-30 | Harison Toshiba Lighting Corporation | High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| US20030160577A1 (en) * | 2001-05-16 | 2003-08-28 | Toshiyuki Noguchi | Discharge lamp lighting device and system comprising it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007060035A1 (en) | 2007-12-05 | 2009-06-10 | Osram Gesellschaft mit beschränkter Haftung | High pressure discharge lamp i.e. mercury-free xenon-high pressure discharge lamp, operating method for automotive-application, supplies additional electrical power to high pressure discharge lamp based on detection of lamp flickers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005310797A (en) | 2005-11-04 |
| EP1589790A3 (en) | 2006-03-15 |
| CN1691868A (en) | 2005-11-02 |
| DE102004020397A1 (en) | 2005-11-10 |
| CA2503187A1 (en) | 2005-10-23 |
| US20050237004A1 (en) | 2005-10-27 |
| KR20060047430A (en) | 2006-05-18 |
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