EP0759684A1 - Amorceur pour une lampe à décharge haute-pression - Google Patents

Amorceur pour une lampe à décharge haute-pression Download PDF

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Publication number
EP0759684A1
EP0759684A1 EP95113124A EP95113124A EP0759684A1 EP 0759684 A1 EP0759684 A1 EP 0759684A1 EP 95113124 A EP95113124 A EP 95113124A EP 95113124 A EP95113124 A EP 95113124A EP 0759684 A1 EP0759684 A1 EP 0759684A1
Authority
EP
European Patent Office
Prior art keywords
pressure discharge
discharge lamp
ignition
voltage
lamp
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.)
Withdrawn
Application number
EP95113124A
Other languages
German (de)
English (en)
Inventor
Thomas Dr. Gloger
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.)
Osram SBT GmbH
Original Assignee
Siemens AG
Siemens Beleuchtungstechnik 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 Siemens AG, Siemens Beleuchtungstechnik GmbH and Co KG filed Critical Siemens AG
Priority to EP95113124A priority Critical patent/EP0759684A1/fr
Publication of EP0759684A1 publication Critical patent/EP0759684A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to an ignition control device for a high-pressure discharge lamp according to the preamble of claim 1.
  • Such ignition control devices with which high-pressure discharge lamps are operated, which allow immediate, automatic re-ignition of the extinguished high-pressure discharge lamp are, for. B. from DE-A-29 38 529 or from EP-B1-0 252 438 known. Due to their function, ignition control devices of this type are basically similar.
  • the phase of an AC mains voltage is connected behind a ballast to the series circuit of an ignition transformer and the operated high-pressure discharge lamp, this lamp load circuit being closed via the neutral conductor of the AC network.
  • a high-voltage transformer is also provided via a switching network on the primary side at the AC line voltage, the secondary winding of which is connected to an ignition capacitor, optionally also with an auxiliary ignition combination, in order to charge the ignition capacitor, which is connected to the ignition transformer via a spark gap.
  • the ignition capacitor discharges via this spark gap and generates a high-voltage ignition pulse in the ignition transformer, which initiates the ignited operating state of the high-pressure discharge lamp.
  • the known ignition control devices thus quite meet the requirements in normal operating cases. They protect the ignition control unit from unlimited attempts to ignite a high-pressure discharge lamp that does not ignite and thus protect the ignition control unit itself from thermal overload. They take account of mains voltage interruptions or fluctuations that can cause a burning high-pressure discharge lamp to go out briefly and enable automatic re-ignition. Finally, resetting the power supply, i.e. H. the AC mains voltage to put the ignition control device into a defined idle state, from which normal ignition operation is possible again as soon as the high-pressure discharge lamp is to be put into operation again by switching on the mains AC voltage.
  • H. the AC mains voltage to put the ignition control device into a defined idle state
  • high-pressure discharge lamps have the particularly unpleasant property that their operating voltage increases with increasing lamp life at the end of the individual lamp life. This phenomenon can be uncontrolled to extinguish the high-pressure discharge lamp at irregular intervals, e.g. B. result from mains voltage drops. If the aged high-pressure discharge lamp is not yet replaced, the rise in the operating voltage continues to increase, which can lead to the re-ignition voltage of the high-pressure discharge lamp becoming too high and the latter extinguishing. Especially It is unpleasant that this behavior becomes completely uncontrolled at the end of the life of an aged high-pressure discharge lamp and therefore known ignition control devices do not solve this problem satisfactorily and effectively.
  • the invention is therefore based on the object of developing an ignition control device of the type mentioned in such a way that uncontrolled burning operation in the case of aged high-pressure discharge lamps is reliably avoided at the end of their service life and reaching the end of the service life in an aged high-pressure discharge lamp can be determined with minimal effort .
  • the lamp current is also detected in the burning mode, but the burning voltage is also monitored, this monitoring device being equipped in such a way that the ignition control device is locked before a critical threshold value for the re-ignition peak when the burning voltage rises is exceeded. If the high-pressure discharge lamp goes out after the detection of this critical operating state, the ignition control device, which has already been locked, cannot immediately ignite it again. If the mains AC voltage is switched off, this interlock remains for a predetermined period of time, for example 1 s, and only then does it reset itself.
  • Another significant advantage of the solution according to the invention is that the latent risk of failure due to an unknown aging condition of the lamp can be eliminated without the need to accept shorter lamp replacement intervals.
  • This increases the availability and reliability of lights or headlights that are operated with such high-pressure discharge lamps, particularly in the field of object protection and emergency lighting. After all, it is of immediate importance to the maintenance service over a simple one To have tools with which the aging condition of a high-pressure discharge lamp can be determined even before its actual end of life. By briefly interrupting the mains voltage, e.g. B.
  • the maintenance service can determine whether the lamp ignites properly after the short interruption or goes out and can only be re-ignited after a long disconnection of the voltage, ie> 1 s, when the locking circuit is reset. If the latter is the case, this is an essential indicator of an already impermissibly high operating voltage, ie the approaching end of the service life of the checked high-pressure discharge lamp. Because in this case there is a high probability that the monitoring device for detecting the increased operating voltage had already responded before the AC mains voltage was interrupted and the ignition control device had locked for a predetermined period of time.
  • a great advantage of the solution according to the invention is the simple circuit structure, which does not require operational amplifiers or other intermediate amplifiers for the ignition device control, and does not require its own power supplies for the control devices implemented in the ignition control device, as a result of which the fuses which are usually required for this are also eliminated. All of this contributes to the reliability and EMC stability of an ignition control device according to the invention.
  • circuit variants of non-automated or partially automated high-voltage ignitors in symmetrical or asymmetrical design can be upgraded in order to reliably implement even the desired functions for controlling irregular faults at the end of the service life of high-pressure discharge lamps.
  • an ignition transformer ZT which is connected in series with a high-pressure discharge lamp L, together with this forms a lamp load circuit which, via an inductive ballast VG which limits the lamp current of the ignited high-pressure discharge lamp L, to AC line voltage u via a line L leading the phase or a neutral conductor N is connected.
  • an ignition generator which is referred to as an ignition generator.
  • This comprises a mains-fed high-voltage transformer HT, the primary winding of which, connected in series with a first switching network S1, is connected to mains alternating voltage u.
  • this first switching network S1 has a triac V1, the switching path of which is connected in parallel to a first capacitor C1 and a varistor R1 as overvoltage protection.
  • the series connection of a first fixed resistor R2 and a further capacitor C2 is also connected in parallel with the triac V1.
  • the control input of the triac V1 is connected to their connection point via a second fixed resistor R3.
  • the secondary winding of the high-voltage transformer HT is assigned an analog second switching network S2, in which the components corresponding to the elements of the first switching network S1 are identified in the same way, but additionally with "'".
  • both the secondary winding of the high-voltage transformer HT and the input of the second switching element S2 are connected, the output of which consists of an auxiliary ignition combination from the series connection of a third fixed resistor R4 and a third capacitor C3, to which the neutral conductor N of the mains AC voltage u is connected.
  • the secondary winding of the high-voltage transformer HT is connected in parallel with a high-voltage-resistant ignition capacitor CZ, which is also connected in parallel via a spark gap FS to the primary winding of the ignition transformer ZT.
  • a capacitor network of high-voltage-resistant charging capacitors C4, C5, C6 of the series connection of ignition transformer ZT and the high-pressure discharge lamp L is connected in parallel, similar to conventional ignition devices.
  • an ignition pulse is generated in the ignition transformer ZT, which first triggers a glow discharge in the high-pressure discharge lamp L and thus lowers its ignition voltage, so that the high-pressure discharge lamp ignites and, after a start-up time, switches to normal burning operation.
  • the high-pressure discharge lamp L is ignited, the triacs V1, V1 'of the switching networks S1 and S2 are deactivated and the ignition generator is thus stopped.
  • the duration of the ignition period is limited by the time constant of the timing element R8, C10, which controls the current flow times of the triacs V1, V1 'of the switching networks S1 and S2 via optocouplers V3, V4.
  • the normal burning operation of the high-pressure discharge lamp L is monitored by detecting the lamp current.
  • the current flowing through the ballast VG is measured as a voltage drop at the ballast, i. H. tapped at a series circuit of a third fixed resistor R5 connected in parallel with a first full-wave rectifier G1 and rectified.
  • a first electrolytic capacitor C7 and a discharge resistor R6 are connected in parallel to its DC voltage outputs, a first Zener diode D1 is provided in the line branch carrying potential, behind which, in turn parallel to the full-wave rectifier G1, a second electrolytic capacitor C8 and the winding K1 of a relay are connected.
  • a DC control voltage is derived from the current in the lamp load circuit and is stored in the first electrolytic capacitor C7. If its charge exceeds the breakdown voltage of the first Zener diode D1, relay current flows.
  • the sensitive relay K1 remains energized as long as the specified amplitude for the current in the lamp load circuit is maintained during normal burning operation. If the high-pressure discharge lamp L goes out, the electrolytic capacitors C7 and C8 discharge and the current monitoring circuit resets itself automatically when the relay K1 drops out.
  • the relay K1 has a normally open contact k11 which, in the rest position, ie when the relay is not activated, connects the AC line voltage u via the series circuit of a fourth fixed resistor R7 and a coupling capacitor C9 to a second full-wave rectifier G2.
  • Parallel to its two DC voltage outputs are a second Zener diode D2 for protection against overvoltages and the series connection of two further electrolytic capacitors C10 and C11 and two further fixed resistors R8 and R9, which form discharge resistors for the parallel electrolytic capacitors.
  • the potential-carrying direct voltage output of the second full-wave rectifier G2 is via a third Zener diode D3 connected to the signal input of a first optocoupler V3, looped through this and serially analogously through a second optocoupler V4 and fed back to the interconnected connection points of the further electrolytic capacitors C10 and C11 and the further fixed resistors R8 and R9.
  • the optocouplers V3 and V4 are each coupled into one of the control signal lines for controlling the triacs V1 and V1 '.
  • a Sidac D4 with a current limiting network in series with it which consists of a seventh fixed resistor R10, in series with a further coupling capacitor C12, and one there is another fixed resistor R11, which is connected in parallel as a discharge resistor for this coupling capacitor C12.
  • the Sidac D4 is connected on the one hand in the current path behind the ballast VG and connected to the second full-wave rectifier G2 with its current limiting network R10, C12, R11 via the normally open operation of the high-pressure discharge lamp L of the relay K1 via the normally open contact L11 and connected to the neutral conductor N.
  • the Sidac D4 together with its current limiting network R10, C12, R11 is in normal burning operation parallel to the lamp load circuit, i.e. H. the series connection of the ignition transformer ZT and the high-pressure discharge lamp L and monitors their operating voltage.
  • the Sidac D4 With the help of the described monitoring circuit for the operating voltage, the occurrence of this critical operating state at the end of the service life of a high-pressure discharge lamp L is reliably avoided.
  • the Sidac D4 With regard to its breakdown voltage, the Sidac D4 is dimensioned such that it switches on when the predetermined critical value for the re-ignition peak of the high-pressure discharge lamp L is exceeded.
  • the current flow through the Sidac D4 charges via the second full-wave rectifier G2 the network R8, C10 and R9, C11 connected downstream, which blocks the optocouplers V3 and V4 in the charged state.
  • the switching networks S1 and S2 are deactivated for renewed ignition attempts after a brief interruption in the power supply or after the high-pressure discharge lamp L has gone out.
  • This monitoring circuit offers the further possibility of forcing a brief interruption of the mains AC voltage u to determine whether the high-pressure discharge lamp L then ignites again immediately.
  • the operated lamps no longer have to be replaced preventively, as is often the case, in good time before a medium lamp life has expired in order to avoid a latent risk of failure. Rather, maintenance and usage costs can be reduced by using the full lamp service life.
  • the solution described for a hot-igniter for operating a high-pressure discharge lamp L has the further advantage of a high level of operational reliability achieved with little effort.
  • the igniter control unit does not require a separate power supply, which is why no separate protection is required.

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  • Circuit Arrangements For Discharge Lamps (AREA)
EP95113124A 1995-08-21 1995-08-21 Amorceur pour une lampe à décharge haute-pression Withdrawn EP0759684A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95113124A EP0759684A1 (fr) 1995-08-21 1995-08-21 Amorceur pour une lampe à décharge haute-pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95113124A EP0759684A1 (fr) 1995-08-21 1995-08-21 Amorceur pour une lampe à décharge haute-pression

Publications (1)

Publication Number Publication Date
EP0759684A1 true EP0759684A1 (fr) 1997-02-26

Family

ID=8219543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113124A Withdrawn EP0759684A1 (fr) 1995-08-21 1995-08-21 Amorceur pour une lampe à décharge haute-pression

Country Status (1)

Country Link
EP (1) EP0759684A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001084890A1 (fr) * 2000-04-28 2001-11-08 Koninklijke Philips Electronics N.V. Circuit d'allumage
CN102436193A (zh) * 2012-01-13 2012-05-02 西蒙电气（中国）有限公司 镇流器老化控制装置
AT12721U1 (de) * 2011-04-22 2012-10-15 Tridonic Gmbh & Co Kg Vorrichtung zum betreiben einer hochdruckentladungslampe
CN111946305A (zh) * 2020-09-21 2020-11-17 成都若克菲斯科技有限公司 一种油气井射孔用多级选发射孔系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938529B1 (de) 1979-09-24 1981-02-19 Siemens Ag Zuend- und Betriebsgeraet fuer eine Hochdrucklampe
US4665346A (en) * 1985-12-23 1987-05-12 Europhane Starting control circuit for a high pressure lamp
EP0252438A1 (fr) 1986-07-09 1988-01-13 NORKA Norddeutsche Kunststoff- und Elektro-Gesellschaft Stäcker & Co. mbH Dispositif d'allumage pour lampes à décharge à haute pression
GB2203302A (en) * 1987-04-06 1988-10-12 Hubbell Inc Start, hot restart and operating circuit for an HIO lamp
US4949018A (en) * 1987-11-06 1990-08-14 Unicorn Electric Products High pressure sodium lamp starter controller
US5019751A (en) * 1989-09-15 1991-05-28 Hubbell Incorporated End-of-life lamp starter disabling circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938529B1 (de) 1979-09-24 1981-02-19 Siemens Ag Zuend- und Betriebsgeraet fuer eine Hochdrucklampe
US4665346A (en) * 1985-12-23 1987-05-12 Europhane Starting control circuit for a high pressure lamp
EP0252438A1 (fr) 1986-07-09 1988-01-13 NORKA Norddeutsche Kunststoff- und Elektro-Gesellschaft Stäcker & Co. mbH Dispositif d'allumage pour lampes à décharge à haute pression
GB2203302A (en) * 1987-04-06 1988-10-12 Hubbell Inc Start, hot restart and operating circuit for an HIO lamp
US4949018A (en) * 1987-11-06 1990-08-14 Unicorn Electric Products High pressure sodium lamp starter controller
US5019751A (en) * 1989-09-15 1991-05-28 Hubbell Incorporated End-of-life lamp starter disabling circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001084890A1 (fr) * 2000-04-28 2001-11-08 Koninklijke Philips Electronics N.V. Circuit d'allumage
AT12721U1 (de) * 2011-04-22 2012-10-15 Tridonic Gmbh & Co Kg Vorrichtung zum betreiben einer hochdruckentladungslampe
CN102436193A (zh) * 2012-01-13 2012-05-02 西蒙电气（中国）有限公司 镇流器老化控制装置
CN111946305A (zh) * 2020-09-21 2020-11-17 成都若克菲斯科技有限公司 一种油气井射孔用多级选发射孔系统

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