EP1618766B1 - Zündschaltung mit geregelter zündspannung - Google Patents

Zündschaltung mit geregelter zündspannung Download PDF

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Publication number
EP1618766B1
EP1618766B1 EP04727829A EP04727829A EP1618766B1 EP 1618766 B1 EP1618766 B1 EP 1618766B1 EP 04727829 A EP04727829 A EP 04727829A EP 04727829 A EP04727829 A EP 04727829A EP 1618766 B1 EP1618766 B1 EP 1618766B1
Authority
EP
European Patent Office
Prior art keywords
switch
lamp
ignition
starting
pulse transformer
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.)
Expired - Lifetime
Application number
EP04727829A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1618766A1 (de
Inventor
Kai Arbinger
Roman Ploner
Hendrik Hein
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.)
Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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Filing date
Publication date
Application filed by Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP1618766A1 publication Critical patent/EP1618766A1/de
Application granted granted Critical
Publication of EP1618766B1 publication Critical patent/EP1618766B1/de
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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Definitions

  • the present invention relates to circuits for generating ignition pulses for a lamp, such as a high-pressure gas discharge lamp, and to methods for generating ignition pulses for a lamp. Finally, the invention also relates to lamp ballasts having such ignition circuits.
  • Fig. 6 shown ignition circuit From the WO 97/08921 is the in Fig. 6 shown ignition circuit known.
  • Fig. 6 schematically shown ignition circuit has a magnetic ballast serving as a throttle 3, a pulse transformer 5, the secondary winding 6 is connected in series with the throttle 3 and the high-pressure gas discharge lamp 4, and the primary winding 8 is connected in series with a switching element 9, and a surge capacitor 7, wherein the surge capacitor 7 on the one hand and the series circuit of the primary winding 8 and the switching element 9 on the other hand form a parallel circuit, which in turn is connected in series with a charging resistor 13 to a controllable switch 10.
  • the controllable switch 10 is, for example, a bipolar transistor or field effect transistor driven in a rectifier bridge.
  • a Zündangeskondensator 11 and a control circuit 12 which serves to control the controllable switch 10.
  • the control circuit 12 controls the controllable switch 10 as a function of the occurrence of an ignition pulse for the high-pressure gas discharge lamp 4, wherein an ignition pulse is detected by a Zündimpulserkennung 15, which is connected to the pulse transformer 5 by a special winding 14.
  • the voltage applied to the surge capacitor 7 increases by the charging of the surge capacitor 7 via the charging resistor 13, so that the voltage applied to the lamp 4 and the Zündangeskondensator 11 voltage increases.
  • the switching voltage of the Sidac 9 it closes briefly and the surge capacitor 7 is discharged via the primary winding 8 of the pulse transformer 5 and the Sidac 9, whereby an ignition pulse is generated at the high-pressure gas discharge lamp 4, via the coupled winding 14 and the Ignition pulse detection 15 of the control circuit 12 is communicated.
  • the control circuit 12 Upon detection of an ignition pulse, the control circuit 12 immediately opens the controllable switch 10, so that the resonant circuit formed by the surge capacitor 7, the Sidac 9 and the primary winding 8 of the pulse transformer 5 swings very quickly, since this resonant circuit no new energy is supplied. As a result, the holding current of the Sidac 9 drops very quickly, which allows shortly after the opening of the switch 10, the switch 10 can be closed again, so that a fast Zündimpuls foundation can be achieved.
  • a disadvantage of this circuit is that it does not take into account that the ignition voltage decreases with the line capacitance.
  • a control unit is provided which is provided in an ignition device for gas discharge lamps, this circuit providing an ignition pulse transmission starting from a TRIAC.
  • the present invention has a technique for (continuous) controlling the firing pulse amplitude so that, due to the regulation of the firing pulse amplitude, the setpoint for the firing voltage can be set close to the lower limit of the power window required by the lamp manufacturer, thereby reducing ballast loading as the other components reduced and thus their life can be significantly increased.
  • the control unit can control the switch-on time of the switch, wherein the switch-on time is optionally selected in synchronism with a predetermined phase position of the mains voltage.
  • an ohmic resistor and / or an inductance can be connected in series with the switch.
  • the Zündimpulstransformators can serve as a choke to limit the lamp current after successful ignition of a connected lamp.
  • the invention also relates to a ballast having a circuit as described above.
  • the invention also relates to a luminaire having a ballast as described above.
  • the switch-on duration of the switch starting from a mains-phase-synchronous switch-on of the switch can be controlled in this case.
  • the switch-on time of the switch can take place synchronously with a predetermined phase position of the mains voltage.
  • Fig. 1 is schematically shown a ballast, for example, for a high-pressure gas discharge lamp.
  • the mains voltage is applied to the terminals L, N (L2), wherein an optional compensation capacitor can be connected between these mains voltage terminals L, N (central compensation in the ballast can also be provided).
  • a pulse transformer VG of the ballast with a Zündwicklung ZW and a series-connected main winding HW can be seen, the pulse transformer VG is used after the ignition of the lamp schematically illustrated as a choke for the lamp current.
  • a generally designated ZG ignition ignition
  • the Zündimpulstransformator VG thus serves as a current limiting reactor after the lamp has been started.
  • the ignition winding ZW and the main winding HW serve as soon as the lamp burns, in a conventional manner to the current limit for the lamp.
  • the igniter ZG has on the one hand a series circuit (series resonant circuit) consisting of a current limiting resistor R1, an inductance L1 and a surge capacitor C1. Furthermore, the ignition device ZG has a switch S1 (for example, a bipolar and MOSFET transistor), by the control of which the charge / discharge processes of the surge capacitor C1 can be controlled.
  • a switch S1 for example, a bipolar and MOSFET transistor
  • the switch S1 is actuated by a control unit which controls the switching on / off operations of the switch as a function of a difference between a reference voltage U Z-REF detected by a comparator and a detected actual amplitude of the ignition pulses at the lamp LA.
  • the switch S1 (preferably a semiconductor in a diode rectifier bridge) is closed to ignite, so that an ignition surge current flows through the series circuit consisting of the ignition winding ZW, the surge capacitor C1, inductance L1 and the current limiting resistor R1.
  • This surge current is transformed into the main winding HW of the ignition pulse transformer VG to an ignition voltage pulse, with which the high-pressure gas discharge lamp can be ignited.
  • the triggering of the switch S1 is carried out as a function of a detected difference between a setpoint value U Z-REF and that of the actual amplitude of the firing pulses on the lamp.
  • this control can of course be changed continuously, ie in contrast to the prior art, the switch S1 can be controlled such that it can be switched on and off arbitrarily during a network half-wave.
  • Fig. 2 and Fig. 3 illustrated how the voltage in the surge capacitor C1 and, accordingly, the ignition voltage at the terminal LA can be changed substantially arbitrarily and continuously by the on and off behavior of the switch S1.
  • This arbitrary setting of the ignition pulse voltages of the terminal LA allows the efficient compensation of the already mentioned tolerances of the ignition system (mains voltage, line capacitance, ambient temperature range, grounded or ungrounded ballast etc.).
  • This makes it possible to set the target value for the ignition pulse amplitude U Z-REF just above the lower limit of the performance window required by the lamp manufacturer for the ignition, whereby the load of the ballast can be reduced and thus the life can be significantly increased.
  • Fig. 2 the case is shown that, as usual, shortly before reaching the apex of a mains half-wave (time t 1 ) of the switch S1 is closed, whereby at least one ignition pulse to this defined phase position of the mains voltage is triggered.
  • the series circuit (series resonant circuit) of the ignition circuit responds to this closing of the switch S1 with a Stosstrom to compensate for the charge difference across the surge capacitor C1. While the switch S1 remains closed, the series resonant circuit R1, L1, C1 oscillates out and the voltage across the surge capacitor continuously adapts to the current value of the applied mains voltage.
  • the switch S1 then remains closed for a relatively long time until a time t 2 .
  • the voltage applied to the surge capacitor C follows during this total on-time tx im essentially the current value of the applied mains voltage.
  • the switch S1 is opened again, so that substantially a voltage is applied to the pulse capacitor C1 and during the opening time of the switch S1 is held, the t the value of the mains voltage at the time corresponding to the second
  • the switch-off time t 2 is only very shortly before the next switch-on time (ignition time) t 3 , the difference between the voltage across the surge capacitor C1 and the value of the mains voltage at the ignition time t 3 is relatively low, which means a relatively low surge voltage at the surge capacitor C1 and, accordingly, a low firing pulse amplitude at terminal LA will result.
  • the closer the switch-off time t 2 is to the next firing point t 3 (in other words, the longer the ignition time tx of the switch S1 is at the fixed firing point), the lower will be the resulting firing pulse amplitude at the terminal LA.
  • the ignition pulse amplitude can thus optionally be set to zero if t 2 essentially corresponds to the switch-on and ignition time t 3 or the switch S1 remains permanently switched on.
  • Fig. 3 shows the scenario that the switch S1 after a switch-on and ignition t 1 after a relatively short duty cycle tx at a time t 2 , already opened again and thus at the surge capacitor C1 this relatively high value of the mains voltage at this time t 2 , is held. If now at a subsequent ignition (equal to the switch S1) at a time t 3, one or more ignition pulses are generated, they have a large amplitude (in comparison to the scenario of Fig. 2 ), because the surge voltage, ie the difference between the voltage held on the surge capacitor C1 (substantially equal to the value of the mains voltage at time t 2 ,) and the value of the mains voltage present at the ignition time t 3 is very large.
  • the switch S1 In extreme cases, i. on the other hand, if the switch S1 is switched off in the region of the peak of a first half-wave and ignition on the other hand takes place in the region of the peak of the following half-wave, the impulse voltage on the capacitor C1 assumes the maximum value, i. about twice the peak value of the mains voltage. By reducing the switch-on of the switch S1 can thus be continuously increased, the amplitude of the ignition pulse voltage at the terminal LA.
  • the surge voltage according to the invention can exceed the peak value of the mains voltage by means of a corresponding transfer of the surge capacitor (voltage increase).
  • the invention thus goes the way that the voltage across the surge capacitor C1 is adjustable, thus ultimately set the Zündimpulsamplitude.
  • the capacity in the ignition device ZG does not have to be changed.
  • the surge voltage is set according to the exemplary embodiment by the selection of the switch-on and switch-off of the switch within a network half-wave.
  • the ignition timing and thus the switch-on time t1, t3 is specified according to the requirements of the lamp manufacturer.
  • the switch-off time t2, t2 'and thus the duty cycle tx can be changed as desired.
  • the switch in this case a MOSFET transistor M1, is connected in a semiconductor bridge with a diode D1.
  • the target value for the ignition pulse amplitude Uz ref is predetermined by a suitable choice of a resistor R6.
  • the ignition pulse voltage at terminal LA is detected via a measuring resistor R2.
  • the input U br-in serves internal functions of the ASIC.
  • the voltages V dd for the control logic itself and the voltage V ss for an output driver for the drive signal OUT for the switch S1, M1 are controlled.
  • Each zero crossing can trigger a counting process in the control logic, the current count then representing the instantaneous phase position of the mains voltage. This is particularly important for the proper timing of the switch-on and thus ignition timing according to the requirements of luminaire manufacturers.
  • the actual rule logic is implemented by means of a so-called look-up table. That is, depending on the result of Zündintensives raws U zref - U zin ) is specified in the control logic by means of a function or such a table, at which time or after which On time tx the switch S1, M2 must be closed and / or reopened by issuing a entsrpechenden signal OUT.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP04727829A 2003-04-30 2004-04-16 Zündschaltung mit geregelter zündspannung Expired - Lifetime EP1618766B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10319511A DE10319511A1 (de) 2003-04-30 2003-04-30 Zündschaltung mit geregelter Zündspannung
PCT/EP2004/004064 WO2004098244A1 (de) 2003-04-30 2004-04-16 Zündschaltung mit geregelter zündspannung

Publications (2)

Publication Number Publication Date
EP1618766A1 EP1618766A1 (de) 2006-01-25
EP1618766B1 true EP1618766B1 (de) 2013-03-13

Family

ID=33305076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04727829A Expired - Lifetime EP1618766B1 (de) 2003-04-30 2004-04-16 Zündschaltung mit geregelter zündspannung

Country Status (7)

Country Link
US (1) US7462992B2 (zh)
EP (1) EP1618766B1 (zh)
CN (1) CN1781343B (zh)
AU (1) AU2004234940B2 (zh)
DE (1) DE10319511A1 (zh)
RU (1) RU2347332C2 (zh)
WO (1) WO2004098244A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008004787A1 (de) * 2008-01-17 2009-07-23 Bag Electronics Gmbh Zündgerät mit zwei Eingangspolen
JP2009176639A (ja) * 2008-01-28 2009-08-06 Panasonic Electric Works Co Ltd 高圧放電灯点灯装置、照明器具
CN101982019A (zh) * 2008-01-28 2011-02-23 松下电工株式会社 高压放电灯照明设备及使用该设备的照明器材
KR20130138215A (ko) * 2010-09-22 2013-12-18 오스람 게엠베하 고압 방전 램프를 시동시키기 위한 방법
US10349504B2 (en) 2014-11-14 2019-07-09 Profoto Ab Flash generator for a flash tube

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337417A (en) 1980-08-14 1982-06-29 Westinghouse Electric Corp. Starting and operating apparatus for high-pressure sodium lamps
DE3108547A1 (de) * 1981-03-06 1982-10-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München "zuendschaltung fuer eine hochdruckmetalldampfentladungslampe"
DE3108548C2 (de) * 1981-03-06 1986-07-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Zündschaltung für eine Hochdruckmetalldampfentladungslampe
DE3729383A1 (de) * 1987-09-03 1989-03-16 Philips Patentverwaltung Schaltungsanordnung zum starten einer hochdruckgasentladungslampe
US5166581A (en) * 1990-09-12 1992-11-24 U.S. Philips Corporation Discharge lamp ignitor which adjusts the amplitude of ignition pulses
US5424617A (en) * 1993-02-26 1995-06-13 North American Philips Corporation HID lamp ignitor-timer with automatic reset for dips in line voltage
DE4421736C2 (de) 1994-06-22 1998-06-18 Wolfgang Nuetzel Steuerbare Lichtanlage
US5594308A (en) * 1995-08-29 1997-01-14 Hubbell Incorporated High intensity discharge lamp starting circuit with automatic disablement of starting pulses
GB2308930B (en) * 1995-08-29 2000-03-22 Hubbell Inc Lamp starting circuit
DE19544842A1 (de) * 1995-12-01 1997-06-05 Bosch Gmbh Robert Eingangsbeschaltung für eine Zündvorrichtung einer Hochdruck-Gasentladungslampe
US6127782A (en) * 1998-10-15 2000-10-03 Hubbell Incorporated Externally mountable discharge lamp ignition circuit having visual diagnostic indicator
US6452340B1 (en) 1999-04-09 2002-09-17 Acuity Brands, Inc. Luminaire starting aid device
DE19923263A1 (de) * 1999-05-20 2000-11-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Zünden einer Lampe
IL138896A0 (en) * 2000-10-05 2001-11-25 Hashofet Eltam Ein An ignitor for discharge lamps

Also Published As

Publication number Publication date
US20070080650A1 (en) 2007-04-12
RU2347332C2 (ru) 2009-02-20
EP1618766A1 (de) 2006-01-25
WO2004098244A1 (de) 2004-11-11
RU2005137169A (ru) 2006-04-10
DE10319511A1 (de) 2004-11-18
CN1781343B (zh) 2011-06-08
US7462992B2 (en) 2008-12-09
AU2004234940B2 (en) 2009-06-25
CN1781343A (zh) 2006-05-31
AU2004234940A1 (en) 2004-11-11

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