EP0741503A1 - Procédé et circuit d'opération des lampes à décharge à haute pression - Google Patents

Procédé et circuit d'opération des lampes à décharge à haute pression Download PDF

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Publication number
EP0741503A1
EP0741503A1 EP96106498A EP96106498A EP0741503A1 EP 0741503 A1 EP0741503 A1 EP 0741503A1 EP 96106498 A EP96106498 A EP 96106498A EP 96106498 A EP96106498 A EP 96106498A EP 0741503 A1 EP0741503 A1 EP 0741503A1
Authority
EP
European Patent Office
Prior art keywords
lamp
circuit arrangement
operating mode
power
ballast
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.)
Granted
Application number
EP96106498A
Other languages
German (de)
English (en)
Other versions
EP0741503B1 (fr
Inventor
Wolfgang Prof.Dr. Heering
Peter Dipl.-Ing. Schwarz
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.)
Eta Plus Electronic GmbH and Co KG
Original Assignee
Eta Plus Electronic GmbH and Co KG
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 Eta Plus Electronic GmbH and Co KG filed Critical Eta Plus Electronic GmbH and Co KG
Publication of EP0741503A1 publication Critical patent/EP0741503A1/fr
Application granted granted Critical
Publication of EP0741503B1 publication Critical patent/EP0741503B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B41/282—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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2858—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
    • 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
    • H05B41/40—Controlling the intensity of light discontinuously
    • H05B41/42—Controlling the intensity of light discontinuously in two steps only
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/04—Dimming circuit for fluorescent lamps

Definitions

  • the invention relates to a method for operating a high-pressure gas discharge lamp in different operating modes, of which a first corresponds to the operation with nominal power and a second corresponds to operation with reduced power compared to the nominal power.
  • the invention also relates to a circuit arrangement for carrying out this method.
  • the high-pressure gas discharge lamp is operated in all operating modes at the mains frequency, because the conventional ballasts, which generally contain a choke, a transducer or a stray field transformer, have the same frequency at their output as at their input, which is connected to the Network is connected.
  • the high-pressure gas discharge lamp is operated on such a conventional ballast, it is not possible to reduce the lamp power to less than about 40% of the nominal power without reducing the lamp life. In many cases, however, it would be desirable to be able to temporarily operate the lamp with less power in a way that is gentle on the lamp.
  • the invention is therefore based on the object of providing a method of the type mentioned at the outset which makes it possible without reducing the service life the lamp can also be operated with an output below 40% of the nominal output. This object is achieved by a method having the features of claim 1.
  • the lamp Due to the fact that the lamp is operated exclusively or predominantly with mains frequency energy only in the nominal power range, but exclusively or predominantly with higher frequency energy at a reduced power, stable, lamp-friendly operation can also be achieved with powers below 25% of the nominal power. Operation with less than 25% of the nominal power is advantageous, for example, when a substrate is irradiated by means of the lamp for the purpose of drying and the drying process has to be temporarily interrupted. But also for reasons of energy saving, it may be desirable if a high-pressure gas discharge lamp with low power can be operated in standby mode.
  • the lamp power is preferably kept at a value between 10% and 15%. The energy consumption and the radiation power are then reduced accordingly. Nevertheless, the lamp can be brought back to its nominal output in a very short time.
  • At least one third operating mode is provided, in which the lamp power is kept at a minimum value of a few percent of the nominal power, for example 1-5%.
  • the lamp current is advantageously regulated in order to ensure that a lamp-protecting arc discharge with hot focal spots on the electrodes is guaranteed at all times, which contributes to lamp-protecting operation as well as the disappearance of re-ignition peaks, which are also avoided.
  • the lamp can be brought to its nominal power with full radiation emission in a short time span of less than 10 seconds.
  • the invention is also based on the object of providing a circuit arrangement for carrying out the method according to the invention. This object is achieved by a circuit arrangement having the features of claim 10.
  • ballasts are easily possible to operate simultaneously if care is taken to ensure that mutual interference is eliminated. This is possible in a simple manner in that the two ballasts are separated from one another on the output side by at least one filter. Isolating chokes, isolating capacitors, low-pass filters or resonant resonant circuits are suitable for such a separation.
  • a switchover device can be provided which enables a switchover from one ballast to the other without the arc discharge being extinguished during the switchover process.
  • the electronic ballast has a device for controlling the variable frequency and / or for regulating the current or power supplied to the lamp.
  • the lamp can be operated in an optimal manner in all operating modes and thus in a manner which is gentle on the lamp.
  • This device is connected to a sensor for the actual value of the current supplied by the electronic ballast to the lamp and a sensor for its output voltage.
  • a variable output frequency of the electronic ballast can be achieved in a simple manner by means of a converter.
  • a high-pressure discharge lamp 1 which is used, for example, as a radiation source for a drying device for printed webs, is connected on the one hand via an isolating choke 2 and on the other hand directly to one or the other output 3 of a conventional ballast 4, which contains, for example, a choke, a transducer or a stray field transformer.
  • the conventional ballast 4 On the input side, the conventional ballast 4 is connected to the 50 or 60 Hz low-voltage network during operation.
  • a capacitor 5 serving as a filter is also connected to the outputs 3 and is used for those with higher frequencies Currents, which are not completely suppressed by the isolating choke 2, form a short circuit.
  • the lamp 2 is connected to the secondary side of a transformer 9 with the interposition of an isolating capacitor 6 and a resonant circuit, which consists of an oscillating circuit choke 7 and an oscillating circuit capacitor 8.
  • a transformer 9 with the interposition of an isolating capacitor 6 and a resonant circuit, which consists of an oscillating circuit choke 7 and an oscillating circuit capacitor 8.
  • the resonant circuit choke 7 and the isolating capacitor 6 are in one current path leading to the lamp 1, while the resonant circuit capacitor 8 is connected to the one side of this current path between the resonant circuit choke 7 and the isolating capacitor 6 and the other to the other current path connected.
  • the primary side of the transformer 9 is connected to the output of an inverter 10, which has a variable output frequency and a variable output voltage.
  • the inverter 10 is connected to a bridge rectifier 11, which is connected to the 50 Hz low-voltage network during operation.
  • a 12V power supply unit can also be connected to this network, which supplies the energy for the operation of a control unit 13, by means of which the output frequency of the inverter 10 can be set in a range between 50 and 200 kHz and its output voltage and output current.
  • This control unit 13 is connected to a sensor 14 for the actual value of the current of the lamp 1 and to a voltage sensor 15 for the output voltage of the transformer 9.
  • the bridge rectifier 11, the inverter 10 with its control device 13 and its power supply 12 and the transformer 9 form an electronic ballast 16, the operating frequency of which in the exemplary embodiment 100 kHz. Therefore, in the exemplary embodiment, the resonance frequency of the resonant circuit consisting of the resonant circuit choke 7 and the resonant circuit capacitor 8 is 80 kHz. Thanks to this resonant circuit, the isolating capacitor 6, the isolating choke 2 and the capacitor 5, the conventional ballast 8 and the electronic ballast 16 do not interfere with one another. They can therefore be operated simultaneously.
  • the electronic ballast When the lamp 1 is operated at its nominal power, the electronic ballast is controlled so that essentially all of the energy is supplied by the conventional ballast 4. If, for example, because of a shorter interruption in the transport of the substrate to be dried, the power of the lamp 1 is to be reduced to such an extent that the substrate does not suffer any damage, even if it is exposed to the radiation from the lamp 1 for a long time, then an upper standby operating point is approached , in which the power of the lamp 1 is reduced to approximately 10% of the nominal power. In this operating mode, the lamp 1 receives its energy essentially from the electronic ballast 16, that is to say in the exemplary embodiment at a frequency of 100 kHz.
  • the lamp 1 is operated gently, ie it burns stably with hot focal spots on its electrodes. Re-ignition peaks do not occur.
  • the output power of the electronic ballast 16 need only be designed for this reduced lamp power. If the full lamp power is required again, the conventional ballast 4 is made fully effective again. This will bring the lamp to full power in three to five seconds.
  • a lower standby point can be reached, in which the lamp only consumes a power of a few percent of the nominal power, in the exemplary embodiment 1.5% of the nominal power.
  • the Lamp 1 is also operated gently, because the current supplied by the electronic ballast 16 is regulated so that hot focal spots are maintained.
  • both the emitted radiation power and the energy consumption are extremely low. This operating mode does not shorten the lifespan.
  • the lamp 1 is only fed by the electronic ballast 16. By switching on the conventional ballast 4, the nominal power can be achieved again in the time required even when the lamp is switched on.
  • the electronic ballast 16 In order to ensure the ignition of the lamp in the cold state and to enable it in the warm state, only the electronic ballast 16 needs to be activated alone or together with the conventional ballast 4. If the lamp 1 then burns stably, the electronic ballast 16 can be switched off again.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP96106498A 1995-05-04 1996-04-25 Procédé et circuit d'opération des lampes à décharge à haute pression Expired - Lifetime EP0741503B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516052A DE19516052A1 (de) 1995-05-04 1995-05-04 Verfahren zum Betreiben einer Hochdruckgasentladungslampe und Schaltungsanordnung zur Durchführung des Verfahrens
DE19516052 1995-05-04

Publications (2)

Publication Number Publication Date
EP0741503A1 true EP0741503A1 (fr) 1996-11-06
EP0741503B1 EP0741503B1 (fr) 1998-06-10

Family

ID=7760858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106498A Expired - Lifetime EP0741503B1 (fr) 1995-05-04 1996-04-25 Procédé et circuit d'opération des lampes à décharge à haute pression

Country Status (5)

Country Link
US (1) US5714845A (fr)
EP (1) EP0741503B1 (fr)
DE (2) DE19516052A1 (fr)
DK (1) DK0741503T3 (fr)
ES (1) ES2117462T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702653A1 (de) * 1997-01-25 1998-07-30 Bosch Gmbh Robert Anordnung zur Leistungsanpassung einer Gasentladungslampe
EP2088837A1 (fr) 2008-02-04 2009-08-12 Uviterno AG Procédé de fonctionnement d'une lampe UV

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7315151B2 (en) * 1995-01-11 2008-01-01 Microplanet Inc. Method and apparatus for electronic power control
US20030052658A1 (en) * 1995-01-11 2003-03-20 Baretich David F. Method and apparatus for electronic power control
US6466464B1 (en) * 1999-05-14 2002-10-15 Intel Corporation Method and apparatus for high frequency alternating current power distribution
JP3893042B2 (ja) * 2001-10-26 2007-03-14 松下電器産業株式会社 高圧放電ランプの点灯方法、点灯装置及び高圧放電ランプ装置
JP4202862B2 (ja) * 2003-08-13 2008-12-24 株式会社小糸製作所 放電灯点灯回路
JP2005063820A (ja) * 2003-08-13 2005-03-10 Koito Mfg Co Ltd 放電灯点灯回路
DE102007047511A1 (de) * 2007-10-04 2009-04-09 Zf Friedrichshafen Ag Leistungsverzweigungsgetriebe
KR101360685B1 (ko) * 2012-05-31 2014-02-10 엘지이노텍 주식회사 대기전력 절감 조명 시스템

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082253A2 (fr) * 1981-12-17 1983-06-29 CEAG Licht- und Stromversorgungstechnik GmbH Dispositif de circuit pour une lampe de décharge
EP0092654A2 (fr) * 1981-04-14 1983-11-02 Siemens Aktiengesellschaft Appareil ballast
US4560908A (en) * 1982-05-27 1985-12-24 North American Philips Corporation High-frequency oscillator-inverter ballast circuit for discharge lamps

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1589131B2 (de) * 1967-07-28 1973-10-31 Ceag Dominit Ag, 4600 Dortmund Verfahren zum Betrieb von Leucht stofflampen
US3833817A (en) * 1973-04-16 1974-09-03 Philips Corp Emergency lighting system
US4362971A (en) * 1977-12-30 1982-12-07 Sloan Jr Hiram C Power supply for arc discharge devices
JPS59198699A (ja) * 1983-04-27 1984-11-10 株式会社日立製作所 高圧放電灯の点灯方法
US4682083A (en) * 1984-10-29 1987-07-21 General Electric Company Fluorescent lamp dimming adaptor kit
US4612478A (en) * 1984-12-19 1986-09-16 Payne Stephen C Dimmer circuit for high intensity discharge lamp
US5270618A (en) * 1987-01-09 1993-12-14 Nilssen Ole K Magnetic-electronic dual-frequency ballast
DE3715162A1 (de) * 1987-05-07 1988-11-17 Bosch Gmbh Robert Schaltungsanordnung zum betrieb einer gasentladungslampe an einer gleichstromquelle
US5099176A (en) * 1990-04-06 1992-03-24 North American Philips Corporation Fluorescent lamp ballast operable from two different power supplies
DE4301184C2 (de) * 1993-01-19 1997-12-18 B & S Elektronische Geraete Gm Steuergerät für wenigstens eine Entladungslampe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092654A2 (fr) * 1981-04-14 1983-11-02 Siemens Aktiengesellschaft Appareil ballast
EP0082253A2 (fr) * 1981-12-17 1983-06-29 CEAG Licht- und Stromversorgungstechnik GmbH Dispositif de circuit pour une lampe de décharge
US4560908A (en) * 1982-05-27 1985-12-24 North American Philips Corporation High-frequency oscillator-inverter ballast circuit for discharge lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702653A1 (de) * 1997-01-25 1998-07-30 Bosch Gmbh Robert Anordnung zur Leistungsanpassung einer Gasentladungslampe
EP2088837A1 (fr) 2008-02-04 2009-08-12 Uviterno AG Procédé de fonctionnement d'une lampe UV

Also Published As

Publication number Publication date
DK0741503T3 (da) 1999-03-22
US5714845A (en) 1998-02-03
EP0741503B1 (fr) 1998-06-10
ES2117462T3 (es) 1998-08-01
DE59600262D1 (de) 1998-07-16
DE19516052A1 (de) 1996-11-14

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