EP0111929A1 - Dispositif pour la mise hors circuit d'un onduleur - Google Patents

Dispositif pour la mise hors circuit d'un onduleur Download PDF

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Publication number
EP0111929A1
EP0111929A1 EP83112842A EP83112842A EP0111929A1 EP 0111929 A1 EP0111929 A1 EP 0111929A1 EP 83112842 A EP83112842 A EP 83112842A EP 83112842 A EP83112842 A EP 83112842A EP 0111929 A1 EP0111929 A1 EP 0111929A1
Authority
EP
European Patent Office
Prior art keywords
circuit
current
monitoring
holding
inverter
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
EP83112842A
Other languages
German (de)
English (en)
Other versions
EP0111929B1 (fr
Inventor
Peter Krummel
Manfred Klamt
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.)
Siemens AG
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to AT83112842T priority Critical patent/ATE26376T1/de
Publication of EP0111929A1 publication Critical patent/EP0111929A1/fr
Application granted granted Critical
Publication of EP0111929B1 publication Critical patent/EP0111929B1/fr
Expired 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
    • H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Definitions

  • the invention relates to an arrangement for switching off an inverter according to the preamble of claim 1.
  • Such an arrangement described in the international patent application PCT / DE 82/00155 has the advantage that the shutdown of the inverter triggered by a malfunction is canceled when the defective lamp is removed, that is to say no separate mains shutdown is required.
  • the monitoring circuit must be dimensioned such that the required minimum holding current can flow over it at the lowest supply voltage under consideration, which is above the tilt-back limit value at which the shutdown device tilts back into the normal state.
  • This holding current now causes additional losses in normal operation, which are of particular importance if a resistance of the monitoring circuit is parallel to the oscillating capacitor of the inverter.
  • the object of the invention is therefore to reduce these additional losses. This is achieved according to the invention with an arrangement having the features of claim 1.
  • the monitoring circuit can thus be dimensioned with higher resistance, the greater the sensitivity of the controllable resistance in the holding circuit.
  • the invention enables the monitoring circuit and the holding circuit to be controlled independently of one another in such a way that the switch-off device remains safely in this state after a switch-off even at the lowest supply voltage, even if an electrode in the monitoring circuit is broken.
  • the previously observed intermittent switching off and restarting of the inverter can then be avoided by appropriate dimensioning. The reason for this was found to be that the current flowing in the monitoring circuit when the electrode was broken was not sufficient to maintain the switch-off state at all supply voltages in question, but was sufficiently large to charge the starting capacitor to the response value of the inverter.
  • the inverter denoted by W is supplied via terminals w1 with a supply voltage source from a step-up converter H, which in turn is connected to an AC voltage network N.
  • the transistors V1, V2 are connected in series between the terminals w1, w2 and are controlled alternately by a control set S.
  • the latter contains secondary windings t2, t3 of a saturation transformer T, the primary winding t1 of which is in series with a swing capacitor C1 and an intermediate load circuit is arranged in parallel to the transistor V1;
  • the load circuit itself consists of two lamp circuits connected in parallel, of the same design, each of which has a series resonance circuit C01, L01; C02, L02 and the heated electrodes e11, e12; contains e21, e22 of a discharge lamp E1, E2, the capacitor of the series resonant circuit being arranged in each case between the electrodes of a lamp.
  • the operating frequency of the inverter is essentially determined by the saturation transformer T and is somewhat higher than the resonance frequency of the series resonance circuits located in the lamp circuits.
  • a bistable shutdown device A ensures a permanent shutdown of the inverter W when the time integral of the current in one of the lamp circuits exceeds a predetermined limit value.
  • the bistable switching device contains a thyristor V3, the control path of which is connected via a switching diode D2 to a capacitor C5, which is connected in parallel via a discharge branch to the resistor R4 and diode D3 of the switching path of the thyristor.V3.
  • each voltage divider lies parallel to a choke L01 or L02 of the series resonant circuits when the transistor V2 of the inverter is turned on.
  • the lamp circuits are in resonance mode as required work, occurs on the associated choke and the voltage divider connected to it such a high voltage that the thyristor V3 of the shutdown device A is turned on after a certain time.
  • V3 then short-circuits a secondary winding t4 of the saturation transformer via diode D5, so that the inverter can no longer oscillate.
  • the load circuit of the thyristor is connected to w1, w2 via a holding circuit, this holding circuit comprising a diode D6, a resistor R7 and a transistor V4 in series connection.
  • the thyristor V3 is connected via a resistor R10 in the discharge circuit of a starting capacitor C3, the voltage of which is fed to the control unit S via a switching diode D4: when the voltage across this starting capacitor reaches a limit value determined by this switching diode, the inverter begins to oscillate.
  • This starting capacitor is connected to a resistor R5 which, together with the resistor R10 and the monitoring circuit, is connected to the DC supply voltage; the monitoring circuit contains a resistor R6, the electrodes e11, e21, a diode D7 and a resistor R9.
  • the control path of the transistor V4 is connected in parallel with the resistor R9 via a resistor R8.
  • the holding current no longer has to flow through the monitoring circuit, it and the voltage divider for C3 enclosing it can be dimensioned with a correspondingly high impedance, so that it causes only negligible losses in normal operation (when the shutdown device is in the normal state).
  • the voltage divider then only needs to be dimensioned such that the start-up limit of the voltage is reached at C3 with the smallest supply voltage that is possible and with intact electrodes, provided the shutdown device is in the normal state.
  • the sensation The transistor V4 and its control circuit must then be dimensioned such that the essentially constant current which flows when the electrode is broken is sufficient to control the transistor into saturation, provided that the shutdown device A is in the shutdown state and then current flowing via the holding circuit is above the tilt-back limit value I H1 of the disconnection device A, that is to say the required minimum holding current IH2 flows at the lowest supply voltage that is possible.
  • the first line shows the position of the tilt-back range which ends with the tilt-back limit value I H1 .
  • Line 2 shows the range of the permissible holding currents I H , the minimum holding current I H2 of which is at a safety distance from the tilt-back limit value I H1 .
  • the third line shows the range of the monitoring currents I B possible when A is switched off, which projects into the tilt-back range.
  • transistor V4 ensures that at least the minimum holding current 1 H2 flows in the holding circuit, even with the lowest supply voltage and broken electrode (monitoring current I B2 ).
  • Line 4 finally shows the range of the monitoring currents I B flowing through the voltage divider of the starting capacitor C3 in normal operation.
  • This voltage divider is dimensioned such that the maximum value I B1 of the monitoring current is below the minimum response value I B2 , ie V4 practically blocks in normal operation.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Inverter Devices (AREA)
  • Executing Machine-Instructions (AREA)
  • Power Conversion In General (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
EP83112842A 1982-12-23 1983-12-20 Dispositif pour la mise hors circuit d'un onduleur Expired EP0111929B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112842T ATE26376T1 (de) 1982-12-23 1983-12-20 Anordnung zur abschaltung eines wechselrichters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823247863 DE3247863A1 (de) 1982-12-23 1982-12-23 Anordnung zur abschaltung eines wechselrichters
DE3247863 1982-12-23

Publications (2)

Publication Number Publication Date
EP0111929A1 true EP0111929A1 (fr) 1984-06-27
EP0111929B1 EP0111929B1 (fr) 1987-04-01

Family

ID=6181649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112842A Expired EP0111929B1 (fr) 1982-12-23 1983-12-20 Dispositif pour la mise hors circuit d'un onduleur

Country Status (6)

Country Link
US (1) US4616158A (fr)
EP (1) EP0111929B1 (fr)
JP (1) JPS59123199A (fr)
AT (1) ATE26376T1 (fr)
DE (2) DE3247863A1 (fr)
FI (1) FI77349C (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158072A1 (fr) * 1984-04-06 1985-10-16 TRILUX-LENZE GmbH & Co. KG Ballast électronique pour plusieurs lampes fluorescentes
EP0466245A2 (fr) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit
EP0558772A1 (fr) * 1992-03-02 1993-09-08 Siemens Aktiengesellschaft Circuit pour le fonctionnement de plusieurs lampes fluorescentes avec un ballast
WO2001097574A2 (fr) * 2000-06-14 2001-12-20 Brenex Electrics Pty. Limited Circuit de commande pour tubes fluorescents
EP1189487A2 (fr) * 2000-09-18 2002-03-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit électronique pour détecter l'usure des filaments de lampes à décharge
WO2007119189A1 (fr) * 2006-04-19 2007-10-25 Koninklijke Philips Electronics N.V. Circuit de détection de l'état de fonctionnement d'une lampe et d'un ballast

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503778C2 (de) * 1985-02-05 1986-11-20 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchtstofflampen-Vorschaltgerät
JP2754531B2 (ja) * 1986-09-30 1998-05-20 東芝ライテック株式会社 直結型放電灯点灯装置
US4980611A (en) * 1988-04-05 1990-12-25 Neon Dynamics Corporation Overvoltage shutdown circuit for excitation supply for gas discharge tubes
JPH0658831B2 (ja) * 1988-12-15 1994-08-03 松下電工株式会社 放電灯点灯装置
US5130611A (en) * 1991-01-16 1992-07-14 Intent Patents A.G. Universal electronic ballast system
US5111114A (en) * 1991-06-18 1992-05-05 L.P.S. Technology Co., Ltd. Fluorescent lamp light ballast system
US5179509A (en) * 1991-10-21 1993-01-12 Jackson Ling High-frequency and high-voltage power supply unit with internal protecting circuit
US5436529A (en) * 1993-02-01 1995-07-25 Bobel; Andrzej A. Control and protection circuit for electronic ballast
US5420779A (en) * 1993-03-04 1995-05-30 Dell Usa, L.P. Inverter current load detection and disable circuit
FR2707051B1 (fr) * 1993-06-10 1996-03-08 Matsushita Electric Works Ltd
US5493181A (en) * 1994-03-22 1996-02-20 Energy Savings, Inc. Capacitive lamp out detector
US5686799A (en) * 1994-03-25 1997-11-11 Pacific Scientific Company Ballast circuit for compact fluorescent lamp
TW266383B (en) * 1994-07-19 1995-12-21 Siemens Ag Method of starting at least one fluorescent lamp by an electronic ballast and the electronic ballast used therefor
US5691606A (en) * 1994-09-30 1997-11-25 Pacific Scientific Company Ballast circuit for fluorescent lamp
US6037722A (en) * 1994-09-30 2000-03-14 Pacific Scientific Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp
US5821699A (en) * 1994-09-30 1998-10-13 Pacific Scientific Ballast circuit for fluorescent lamps
US5596247A (en) * 1994-10-03 1997-01-21 Pacific Scientific Company Compact dimmable fluorescent lamps with central dimming ring
DE69628739T2 (de) * 1995-12-26 2004-04-29 General Electric Co., Fairfield Steuerung und überwachung von dimmbaren vorschaltgeräten mit breitem beleuchtungshub
US5925986A (en) * 1996-05-09 1999-07-20 Pacific Scientific Company Method and apparatus for controlling power delivered to a fluorescent lamp
GB9622768D0 (en) * 1996-11-01 1997-01-08 Lab Craft Limited Fluorescent lamp failure warning device
US5866993A (en) * 1996-11-14 1999-02-02 Pacific Scientific Company Three-way dimming ballast circuit with passive power factor correction
US5798617A (en) * 1996-12-18 1998-08-25 Pacific Scientific Company Magnetic feedback ballast circuit for fluorescent lamp
US6111368A (en) * 1997-09-26 2000-08-29 Lutron Electronics Co., Inc. System for preventing oscillations in a fluorescent lamp ballast

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062276A1 (fr) * 1981-03-30 1982-10-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour le fonctionnement de lampes à décharge à basse pression
WO1983000587A1 (fr) * 1981-07-31 1983-02-17 Kerscher, Max Convertisseur

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168453A (en) * 1977-12-28 1979-09-18 Datapower, Inc. Variable intensity control apparatus for operating a gas discharge lamp
JPS5535272A (en) * 1978-09-04 1980-03-12 Japan Storage Battery Co Ltd Detector for overvoltage of inverter output
JPS55144780A (en) * 1979-04-24 1980-11-11 Nippon Denso Co Ltd Converter
JPS5635838U (fr) * 1979-08-28 1981-04-07
SU877696A1 (ru) * 1980-02-25 1981-10-30 Московский Ордена Трудового Красного Знамени Инженерно-Строительный Институт Им.В.В.Куйбышева Устройство дл защиты инвертора
US4471422A (en) * 1981-01-09 1984-09-11 Wide-Lite International Corporation Dc-to-ac Inverter
SU970554A1 (ru) * 1981-05-08 1982-10-30 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.Серго Орджоникидзе Устройство тепловой защиты вентилей преобразовател
US4455509A (en) * 1983-05-16 1984-06-19 Crum Stephen T Intrinsically safe lighting system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062276A1 (fr) * 1981-03-30 1982-10-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour le fonctionnement de lampes à décharge à basse pression
WO1983000587A1 (fr) * 1981-07-31 1983-02-17 Kerscher, Max Convertisseur

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158072A1 (fr) * 1984-04-06 1985-10-16 TRILUX-LENZE GmbH & Co. KG Ballast électronique pour plusieurs lampes fluorescentes
EP0466245A2 (fr) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit
EP0466245A3 (en) * 1990-07-09 1992-08-05 N.V. Philips' Gloeilampenfabrieken Circuit arrangement
EP0558772A1 (fr) * 1992-03-02 1993-09-08 Siemens Aktiengesellschaft Circuit pour le fonctionnement de plusieurs lampes fluorescentes avec un ballast
WO2001097574A2 (fr) * 2000-06-14 2001-12-20 Brenex Electrics Pty. Limited Circuit de commande pour tubes fluorescents
WO2001097574A3 (fr) * 2000-06-14 2002-06-06 Brenex Electrics Pty Ltd Circuit de commande pour tubes fluorescents
EP1189487A2 (fr) * 2000-09-18 2002-03-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit électronique pour détecter l'usure des filaments de lampes à décharge
EP1189487A3 (fr) * 2000-09-18 2005-01-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit électronique pour détecter l'usure des filaments de lampes à décharge
WO2007119189A1 (fr) * 2006-04-19 2007-10-25 Koninklijke Philips Electronics N.V. Circuit de détection de l'état de fonctionnement d'une lampe et d'un ballast

Also Published As

Publication number Publication date
DE3247863A1 (de) 1984-06-28
US4616158A (en) 1986-10-07
EP0111929B1 (fr) 1987-04-01
DE3370744D1 (en) 1987-05-07
FI77349C (fi) 1989-02-10
FI77349B (fi) 1988-10-31
FI834398A (fi) 1984-06-24
ATE26376T1 (de) 1987-04-15
JPS59123199A (ja) 1984-07-16
FI834398A0 (fi) 1983-12-01

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