EP1618766A1 - Z ndschaltung mit geregelter z ndspannung - Google Patents
Z ndschaltung mit geregelter z ndspannungInfo
- Publication number
- EP1618766A1 EP1618766A1 EP04727829A EP04727829A EP1618766A1 EP 1618766 A1 EP1618766 A1 EP 1618766A1 EP 04727829 A EP04727829 A EP 04727829A EP 04727829 A EP04727829 A EP 04727829A EP 1618766 A1 EP1618766 A1 EP 1618766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- ignition
- transformed
- lamp
- ignition pulses
- 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
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
- H05B41/02—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.
- the ignition circuit shown in Fig. 6 is known.
- the ignition circuit shown schematically in Fig. 6 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 its primary winding 8 connected in series with a switching element 9 is, 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.
- controllable switch 10 is open so that the parallel circuit formed by the surge capacitor 7, the primary winding 8 of the pulse transformer 5 and the sidac 9 is disconnected from the AC power supply applied to the terminals 1.
- the control circuit for example an Asic, preferably contains a counter which is put into operation when a zero crossing of the mains voltage occurs or the mains voltage has reached a certain level, which corresponds to a specific switching angle. By counting can be determined when the required switching angle, ie the phase position required by the manufacturer of lamps between 60 ° EL to 90 ° EL or 240 ° EL to 270 ° EL, is reached.
- the controllable switch 10 is closed, wherein the voltage applied to the Zündangeskondensator 11 voltage is briefly reduced, since by closing the controllable switch 10, the surge capacitor 7 is connected in parallel to the Zündagiskondensator 11.
- the secondary winding 6 of the pulse transformer 5 itself is low impedance. After closing the controllable switch 10, it comes to the normal ignition behavior, ie the voltage applied to the surge capacitor 7 voltage increases by charging the surge capacitor 7 via the charging resistor 13, so that the at the lamp 4 and the
- 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.
- Ignition pulse amplitude ensures at the lamp. More specifically, 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 the load on the ballast as the other components reduced and thus their life can be significantly increased.
- a circuit for generating ignition pulses for a lamp wherein the circuit has a Zündimpulstransformator (which may otherwise serve as a throttle for the lamp current after ignition). Furthermore, a device for generating ignition pulses is provided on a primary winding (ignition winding) of the Zundimpulstransformators, wherein the ignition pulses are transformed into the secondary winding (main winding) of the Zundimpulstransformators. Furthermore, means for detecting the voltage value (amplitude at the terminal LA of the ignition device) of the transformed ignition pulses and a device for controlling the voltage value of the transformed ignition pulses to a predetermined reference value are provided.
- regulation of the voltage value of the transformed ignition pulses is thus to be understood as meaning that said device is designed to match the actual amplitude of the adjacent ones in accordance with a possible difference from a predetermined reference value Ignition pulses - depending on the sign of the difference - not only to increase, but possibly also lower.
- the voltage value of the transformed ignition pulses can be continuously regulated. This allows a more efficient and finer control of the voltage applied to the lamp ignition voltage in particular in comparison to the already mentioned EP 0 479 351 AI.
- the means for generating ignition pulses may comprise a series circuit consisting of a surge capacitor and a switch in parallel with the secondary winding of the Zundimpulstransformators and the lamp.
- the device for regulating the voltage value of the transformed firing pulses can set as the control value the impulse voltage applied to the firing instant at the impulse capacitor.
- the device for controlling the voltage value of the transformed ignition pulses can, for example, control the switch-on duration of the switch.
- the switch can be opened and closed at arbitrary times, but closed in particular at a (possibly fixed) point in time before the peak of a mains half-wave, and preferably before reaching the top of the directly following one
- a circuit for generating ignition pulses for a lamp comprising:
- the device comprises a series circuit consisting of a surge capacitor and a switch in parallel to the secondary winding of the Zundimpulstransformators and the lamp, wherein the switch is open, the charge in the surge capacitor is substantially maintained and with the switch closed, the surge capacitor to the current Instantaneous value of the mains voltage.
- a control unit is provided by means of which the on / off times of the switch are arbitrarily adjustable.
- the control unit can control the switch-on time of the switch, wherein the switch-on time is optionally selected fixed in synchronism with a predetermined phase position of the mains voltage.
- an ohmic resistance and / or an inductance can be connected in series with the switch.
- a method for generating ignition pulses for a lamp, wherein ignition pulses are generated in a primary winding of a Zundimpulstransformators and transformed into the secondary winding of the Zundimpulstransformators.
- the voltage value (amplitude) of the transformed ignition pulses is detected.
- the voltage value of the transformed ignition pulses is finally regulated to a predetermined reference value as a function of the detected voltage value of the transformed ignition pulses.
- a control includes the ability to both increase and decrease the amplitude of the transformed firing pulses.
- the voltage value of the transformed ignition pulses can be regulated by means of the time control of the charge / discharge processes of a surge capacitor.
- the method may include the step of closing a switch for charging / discharging the surge capacitor at the time before the vertex to a mains half-wave and before opening the vertex of the immediately following power half-wave is opened and closed again.
- 1 is a schematic representation of an ignition circuit according to the invention
- 2 and 3 are diagrams illustrating the control of Zündimpulsamplitude by selecting the duty cycle of a switch of the ignition circuit
- FIG. 4 is a more detailed view of the ignition circuit in Fig. 1,
- Fig. 5 is a detailed view of the control unit of an ignition circuit according to the invention.
- Fig. 6 is a known from WO 97/08921 circuit.
- a ballast is shown schematically 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 connections L, N (central compensation in the ballast can also be provided).
- a pulse transformer VG of Vorschaltgerats 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 ignitor ZG has on the one hand a series circuit
- the ignition device ZG has a switch Sl (for example, a bipolar and MOSFET transistor), by the control of which the charge / discharge processes of the surge capacitor Cl can be controlled.
- a switch Sl for example, a bipolar and MOSFET transistor
- the switch Sl is actuated by a control unit, which controls the on / off operations of the switch depending on a detected by a comparator difference between a reference voltage U Z _ RE F and a detected actual amplitude of the ignition pulses to the lamp LA.
- the switch Sl (preferably a semiconductor in a diode rectifier bridge) is closed to ignite, so that an ignition surge current through the series circuit consisting of the
- This surge current is transformed into the main winding HW of the Zundimpulstransformators VG to a Zündnapsimpuls 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 Sl can be controlled such that it during a
- Mains half-wave can be switched on and off as required. Switching is known to be the ignition.
- FIG. 2 and FIG. 3 it is shown how the voltage in the surge capacitor C 1 and consequently also the ignition voltage at the terminal LA can be varied essentially as desired and continuously by the switching-on and switching-off behavior of the switch S 1.
- This arbitrary adjustment 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,
- Fig. 2 the case is shown that, as usual, shortly before reaching the peak of a mains half-wave (time ti) of the switch Sl is closed, whereby at least one ignition pulse to this defined phase position of the mains voltage is triggered.
- 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 adjacent
- the switch-off time t 2 is only very shortly before the next turn-on time (ignition time) t 3 , the difference between the voltage across the surge capacitor Cl 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 Cl 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 Sl is at 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 Sl remains permanently switched on.
- Fig. 3 shows the other hand, the scenario that the switch Sl after a switch-on and ignition ti after a relatively short duty cycle tx at a time t 2 ⁇ already opened again and thus at the surge capacitor Cl this relatively high value of the mains voltage at this time t 2 »is held. If one or more firing pulses are now generated at a subsequent ignition (equal to switching on the switch Sl) at a time t 3 , they have a large amplitude (in comparison to the scenario of FIG. 2), since 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 vertex of a first half-wave of the network and the ignition on the other hand takes place in the region of the vertex of the following half-wave, the impulse voltage on the capacitor Cl assumes the maximum value, i. about twice the peak value of the mains voltage. By reducing the turn-on of the switch Sl 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 Cl is adjustable, thus ultimately set the Zündimpulsamplitude.
- the capacity in the ignition device ZG does not have to be changed.
- the surge voltage according to the exemplary embodiment is determined by the selection of the switch-on and switch-off times of the switch within a network half-wave.
- the ignition timing and thus the switch-on time t1, t3 are predetermined 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 re f is specified by appropriate selection of a resistor R6.
- the ignition pulse voltage at terminal LA is detected at a terminal Uz n of the ASICS Ul via a measuring resistor R2.
- the input U br _i n 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 Sl, Ml are controlled.
- the zero crossing of the mains voltage can be detected by means of the input Uzi n .
- 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 Zündbonds produceds U zref - U z i n ) is specified in the control logic by means of a function or such a table, at what time or after which On time tx of the switch Sl, M2 must be closed by issuing a entsrpechenden signal OUT and / or reopened.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Claims
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 true EP1618766A1 (de) | 2006-01-25 |
EP1618766B1 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 (de) |
EP (1) | EP1618766B1 (de) |
CN (1) | CN1781343B (de) |
AU (1) | AU2004234940B2 (de) |
DE (1) | DE10319511A1 (de) |
RU (1) | RU2347332C2 (de) |
WO (1) | WO2004098244A1 (de) |
Families Citing this family (5)
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 |
US8232746B2 (en) * | 2008-01-28 | 2012-07-31 | Panasonic Corporation | High pressure discharge lamp lighting device and lighting fixture using the same |
KR20130138215A (ko) * | 2010-09-22 | 2013-12-18 | 오스람 게엠베하 | 고압 방전 램프를 시동시키기 위한 방법 |
EP3219175B1 (de) * | 2014-11-14 | 2020-04-08 | Profoto AB | Blitzgenerator für eine blitzröhre |
Family Cites Families (14)
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 |
-
2003
- 2003-04-30 DE DE10319511A patent/DE10319511A1/de not_active Withdrawn
-
2004
- 2004-04-16 RU RU2005137169/28A patent/RU2347332C2/ru not_active IP Right Cessation
- 2004-04-16 WO PCT/EP2004/004064 patent/WO2004098244A1/de active Application Filing
- 2004-04-16 AU AU2004234940A patent/AU2004234940B2/en not_active Ceased
- 2004-04-16 US US10/555,086 patent/US7462992B2/en not_active Expired - Fee Related
- 2004-04-16 EP EP04727829A patent/EP1618766B1/de not_active Expired - Lifetime
- 2004-04-16 CN CN2004800113907A patent/CN1781343B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004098244A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2347332C2 (ru) | 2009-02-20 |
WO2004098244A1 (de) | 2004-11-11 |
US20070080650A1 (en) | 2007-04-12 |
AU2004234940A1 (en) | 2004-11-11 |
CN1781343B (zh) | 2011-06-08 |
AU2004234940B2 (en) | 2009-06-25 |
RU2005137169A (ru) | 2006-04-10 |
DE10319511A1 (de) | 2004-11-18 |
US7462992B2 (en) | 2008-12-09 |
CN1781343A (zh) | 2006-05-31 |
EP1618766B1 (de) | 2013-03-13 |
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