EP0707438B1 - Vorschaltgerät für mindestens eine Gasentladungslampe - Google Patents

Vorschaltgerät für mindestens eine Gasentladungslampe Download PDF

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Publication number
EP0707438B1
EP0707438B1 EP95116198A EP95116198A EP0707438B1 EP 0707438 B1 EP0707438 B1 EP 0707438B1 EP 95116198 A EP95116198 A EP 95116198A EP 95116198 A EP95116198 A EP 95116198A EP 0707438 B1 EP0707438 B1 EP 0707438B1
Authority
EP
European Patent Office
Prior art keywords
heating
lamp
switch
inverter
circuit
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
EP95116198A
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German (de)
English (en)
French (fr)
Other versions
EP0707438A3 (de
EP0707438A2 (de
Inventor
Siegfried Luger
Thomas Marinelli
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 Bauelemente GmbH
Original Assignee
Tridonic Bauelemente GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25941035&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0707438(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19501695A external-priority patent/DE19501695B4/de
Application filed by Tridonic Bauelemente GmbH filed Critical Tridonic Bauelemente GmbH
Publication of EP0707438A2 publication Critical patent/EP0707438A2/de
Publication of EP0707438A3 publication Critical patent/EP0707438A3/de
Application granted granted Critical
Publication of EP0707438B1 publication Critical patent/EP0707438B1/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
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
    • 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
    • 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 a ballast for at least one gas discharge lamp according to the preamble of claim 1, and a method for operating a Gas discharge lamp with such a ballast.
  • ballasts are usually used for Gas discharge lamps preheated the lamp electrodes before the ignition voltage between them. It has been shown that the measure Lamp life is significantly extended.
  • the gas discharge lamp in the Usually operated on a series resonant circuit the resonant circuit capacitor in generally lies parallel to the discharge path of the gas discharge lamp.
  • the electrodes the lamp are designed as heating coils through which the current of the resonant circuit flows when the lamp is not lit.
  • the frequency is compared to Resonance frequency of the resonance circuit changed so that the above Resonance capacitor and thus no voltage above the gas discharge lamp Ignition of the gas discharge lamp causes. In this way an im flows substantially more constant current through the helixes Lamp electrodes so that they are preheated.
  • the frequency is set close to the resonance frequency of the resonance circuit, whereby the voltage across the resonance capacitor increases so that the Gas discharge lamp ignites.
  • EP 0 589 081 A1 a suitable circuit arrangement described.
  • This points in Resonance circuit on the primary winding of a heating transformer the Secondary windings are connected in parallel to the connections of the heating coils. In this way it is possible to use the heating coils even in ignited mode To supply energy.
  • is parallel to the primary winding Heating transformer provided a controllable switch, which, if necessary, the Bridges the primary winding and thus simultaneously heats the heating coils prevents.
  • a further circuit arrangement is known from WO 93 12631 A, which a Describes electronic ballast according to the preamble of claim 1.
  • a lamp is connected to a coil and a series resonant circuit Capacitor ignited.
  • the series resonance circuit is between a center tap two alternating switches of an inverter are connected. With a The lamp filament is coupled to a switch which can be controlled via a relay and which is in closed condition shorts the lamp electrodes.
  • the lamp contact is closed the relay contact, so that over the coil of the Series resonance circuit as well as the electrode coils and the switch high-frequency heating current flows, which heats the electrodes of the lamp.
  • the electrode coils heat up, it grows their ohmic resistance, so that accordingly the voltage drop to the Electrodes and at the switch rises.
  • Threshold the switch is opened using the relay, causing the heating circuit interrupted and a current flow through the electrode coils is prevented. Since the Capacity of the resonant circuit is no longer bridged by the heating circuit damping the series resonant circuit, and the lamp can be ignited. There even with this arrangement, the series resonance circuit is temporarily dampened also the problems described above.
  • the present invention is therefore based on the object of providing a ballast for at least one gas discharge lamp and a method for operating a To create gas discharge lamp with such a ballast, so that always a reliable, the lamp-sparing operation is guaranteed.
  • the further switch is switched so that the lamp only with Heating current is supplied if these are heated due to their operating state got to. This means that only as much energy as is absolutely necessary for heating the Lamp consumed.
  • the claims 24 relate advantageously to embodiments of the invention Ballast.
  • the gas discharge lamp is operated within the permissible operating range for the heating output guaranteed.
  • FIG. 1 the essential parts of an embodiment are Ballast shown for a gas discharge lamp.
  • This first has one Inverter consisting of the controllable switches S1 and S2, which by means of an inverter control circuit 1 can be driven in push-pull. Thus in Switch one switch on and the other off.
  • the two Inverter switches S1 and S2 are connected in series between a positive one Supply voltage and ground switched.
  • the load circuit is connected.
  • This consists of one Series resonance circuit, which consists of a resonance circuit coil L1 and a Resonant circuit capacitor C3 is composed.
  • the resonant circuit capacitor is C3 with its one terminal connected to ground.
  • connection node between the resonance circuit capacitor C3 and the resonance circuit coil L1 is one Connection of a coupling capacitor C2 connected.
  • the other connection of the Coupling capacitor C2 is with one of two cathodes, a gas discharge lamp LA connected.
  • the two cathodes of the gas discharge lamp LA each have two Connections, between each of which a heating coil for heating the respective cathode is provided.
  • the not connected to the coupling capacitor C2 Electrode of the gas discharge lamp LA has a connection K3 to ground connected.
  • a heating transformer T is also provided, which has two windings on the primary side T1 and T3 and two secondary windings T2 and T4.
  • the one primary winding T1 is with its one connection to the connection node of the two inverter switches S1 and S2 connected and with their second Connection connected to the second primary winding T3.
  • This is again connected to a connection of a further controllable switch S3.
  • the second Connection of the further controllable switch S3 is in turn with a resistor R1 connected, which on the other hand is connected to ground. This results in a Series connection from the two primary-side windings of the heating transformer, the further controllable switch S3 and resistor R1, which are parallel to Inverter switch S2 are switched.
  • the further controllable switch S3 is in turn assigned to it by one Switching control 2 operated.
  • the two secondary windings T2 and T4 of the heating transformer T are over Series connections with respective diodes D3 and D4 each with one of the two Electrodes of the gas discharge lamp LA connected.
  • the winding T2 is over the Diode D3 with the heating coil connections K3 and K4 of one electrode and Winding T4 via the diode D4 with the heating coil connections K1 and K2 second electrode connected.
  • the cathode is connected to the positive supply voltage.
  • a diode D2 switched, the anode connection to ground connected is. This diode can be omitted when using FET transistors, if the transistors used have already integrated a diode circuit.
  • control signals for the inverter switch S1 are shown in curve I, which periodically switch between levels L and H.
  • the period length is PO, the signal being at level H for the duration tO.
  • the inverter switch S1 is closed as long as it is at level H is controlled.
  • the second inverter switch S2 switches, as before already explained, alternating with switch S1.
  • the resonance circuit is dimmed, i.e. the stronger the period PO deviates from the resonance frequency of the series resonance circuit, the stronger the Lamp dimmed, i.e. the darker it is.
  • Such an operation alone would have, like previously mentioned, with the result that the lamp would age to an increased extent.
  • control circuit 2 of the further controlled switch S3 to couple a coupling 3 to the inverter control circuit 1.
  • Curves I and II are identical, so that switches S1 and S3 are in common mode switch and are switched on or off at the same time. It follows that then when the switch S1 is turned on, a primary-side current at the same time through the windings T1 and T3 of the heating transformer T over the closed further controllable switch S3 and the resistor R1 from the positive Supply voltage connection flows to ground. Since it is according to curve II in FIG. 3 an interrupted current, i.e. no direct current, is acting according to the Laws of magnetic induction on the secondary side of the Heating transformer, i.e.
  • the inverter can be dimmed the gas discharge lamp LA.
  • the heating power of the Adapt electrode heating can be done according to curves II to VII in FIG. 2 in that not every time the inverter switch S1 is switched on further controlled switch S3 is also turned on. Rather, longer ones Clock periods P1 to P5 can be provided, for example, the period lengths P1 to P5 are an integer multiple of the cycle period of the inverter switch S1.
  • heating output to set is to switch the switching time in which the switch S3 is turned on change. While in curves II to VII the switch S3 is just as long is switched on like switch S1, and only the time during which switch S3 is switched off, is varied, switch S3 is significantly shorter according to curve VIII switched on. At the same time, this reduces the achievable heating current through the Heating coil.
  • curves 1 and 3 are the maximum and Minimum heating current in recommended by the manufacturer of a gas discharge lamp Dependence on the degree of dimming is shown. With curve 2 is the one with the previous one circuit and control method achievable heating current shown. From figure 4 it is thus clear that a heating current for the gas discharge lamp is easily adjustable, which is just above the minimum required heating current.
  • FIG. 5 shows a representation which shows the adjustable heating current as a function on the number of switch-on pulses omitted with respect to switch S1, i.e. which represents a correspondingly extended period. If the number of omitted switch-on pulses is 0 - as in II of Figure 2 - is a maximum Heating current achievable. This value can be reduced almost continuously.
  • FIG. 3 a circuit variant of the heating transformer T is shown. Here are not two windings connected in series on the primary side but one over a core wound winding T1 'is provided which is the secondary windings Operate T2 and T4.
  • the circuit arrangements described above are initially one pure control, in which the dependency between the switching frequency PO of the Inverter and the switching frequency of the further controllable switch S3 is specified. Nevertheless, regulation is of course also conceivable.
  • the lamp current is measured in a manner known per se and the Control circuits 1 and 2 supplied (not shown).
  • Heating current proportional voltage across resistor R1 can be measured and the value of the heating current via a heating current detector 4 as the signal Inverter control circuits are supplied. In this way the heating current directly adjustable depending on the lamp current by means of control.
  • This arrangement also has the advantage that it can also be detected when a There is a broken coil, i.e. the lamp is defective and if the lamp is out of Arrangement was removed.
  • a reinstallation of the lamp LA is detected, so that the Inverter can be operated so that the lamp LA automatically after insertion ignites.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
EP95116198A 1994-10-13 1995-10-13 Vorschaltgerät für mindestens eine Gasentladungslampe Expired - Lifetime EP0707438B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4436705 1994-10-13
DE4436705 1994-10-13
DE19501695 1995-01-20
DE19501695A DE19501695B4 (de) 1994-10-13 1995-01-20 Vorschaltgerät für mindestens eine Gasentladungslampe mit vorheizbaren Lampenwendeln

Publications (3)

Publication Number Publication Date
EP0707438A2 EP0707438A2 (de) 1996-04-17
EP0707438A3 EP0707438A3 (de) 1997-07-30
EP0707438B1 true EP0707438B1 (de) 1999-09-29

Family

ID=25941035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116198A Expired - Lifetime EP0707438B1 (de) 1994-10-13 1995-10-13 Vorschaltgerät für mindestens eine Gasentladungslampe

Country Status (5)

Country Link
US (1) US5656891A (fi)
EP (1) EP0707438B1 (fi)
AT (1) ATE185231T1 (fi)
ES (1) ES2138129T3 (fi)
FI (1) FI113148B (fi)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011646A1 (de) 2007-03-09 2008-09-11 Tridonicatco Gmbh & Co. Kg Extern konfigurierbar integrierbare Steuerschaltung für Betriebsgeräte für Leuchtmittel
DE102007027179A1 (de) 2007-06-13 2008-12-18 Tridonicatco Gmbh & Co. Kg Steuerschaltung für Leuchtmittel-Betriebsgeräte
DE102011089113A1 (de) 2010-12-22 2012-06-28 Tridonic Gmbh & Co. Kg Verfahren und Betriebsgerät zum Betreiben einer Gasentladungslampe mit Heizwendel
CN103959916A (zh) * 2011-09-02 2014-07-30 荷兰睿保乐Nedap公司 气体放电灯的功率电路
EP1872630B2 (de) † 2005-04-22 2018-04-11 Tridonic GmbH & Co KG Intelligente flyback-heizung

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DE19520999A1 (de) * 1995-06-08 1996-12-12 Siemens Ag Schaltungsanordnung zur Wendelvorheizung von Leuchtstofflampen
US5703441A (en) * 1995-11-02 1997-12-30 General Electric Company Multi-function filament-heater power supply for an electronic ballast for long-life dimmerable lamps
FI101187B1 (fi) * 1997-01-03 1998-04-30 Helvar Oy Lampputehon mittauksella varustettu säädettävä elektroninen liitäntälaite
US5945788A (en) * 1998-03-30 1999-08-31 Motorola Inc. Electronic ballast with inverter control circuit
US5973455A (en) * 1998-05-15 1999-10-26 Energy Savings, Inc. Electronic ballast with filament cut-out
US6111369A (en) * 1998-12-18 2000-08-29 Clalight Israel Ltd. Electronic ballast
WO2000040056A1 (en) * 1998-12-23 2000-07-06 United Automation Limited Magnetron controller with transformer controlling the inrush current
EP1095542B1 (en) * 1999-05-06 2003-07-30 Koninklijke Philips Electronics N.V. Circuit arrangement
DE19923945A1 (de) 1999-05-25 2000-12-28 Tridonic Bauelemente Elektronisches Vorschaltgerät für mindestens eine Niederdruck-Entladungslampe
ATE245337T1 (de) * 1999-05-25 2003-08-15 Tridonicatco Gmbh & Co Kg Elektronisches vorschaltgerät für mindestens eine niederdruck-entladungslampe
US6359387B1 (en) * 2000-08-31 2002-03-19 Philips Electronics North America Corporation Gas-discharge lamp type recognition based on built-in lamp electrical properties
FI108105B (fi) * 2000-09-20 2001-11-15 Helvar Oy Ab Loistelampun elektroninen liitäntälaite
DE10126011A1 (de) * 2001-05-28 2002-12-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Start einer Entladungslampe
US6501225B1 (en) 2001-08-06 2002-12-31 Osram Sylvania Inc. Ballast with efficient filament preheating and lamp fault protection
WO2003070352A1 (en) 2002-02-19 2003-08-28 Access Business Group International Llc Removable closure assembly for a water treatment system
DE10304544B4 (de) * 2003-02-04 2006-10-12 Hep Tech Co.Ltd. Elektronisches Vorschaltgerät
WO2005011340A1 (en) * 2003-07-25 2005-02-03 Koninklijke Philips Electronics, N.V. Filament cutout circuit
DE10345610A1 (de) * 2003-09-29 2005-05-12 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben mindestens einer Niederdruckentladungslampe
CN101061758A (zh) * 2004-11-29 2007-10-24 禧荣有限公司 具有预热和调光控制的电子镇流器
US7187132B2 (en) * 2004-12-27 2007-03-06 Osram Sylvania, Inc. Ballast with filament heating control circuit
DE102005018795A1 (de) * 2005-04-22 2006-10-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektronisches Vorschaltgerät mit Blindstromschwingungsreduzierung
DE102005047985A1 (de) * 2005-10-06 2007-04-12 Tridonicatco Gmbh & Co. Kg Dynamische Wendelheizung
US7586268B2 (en) * 2005-12-09 2009-09-08 Lutron Electronics Co., Inc. Apparatus and method for controlling the filament voltage in an electronic dimming ballast
RU2446641C2 (ru) * 2008-01-23 2012-03-27 Мидас Вэй Трейдинг Ко., Лтд. Пьезоэлектрический резонансный контур зажигания лампы
US8232727B1 (en) 2009-03-05 2012-07-31 Universal Lighting Technologies, Inc. Ballast circuit for a gas-discharge lamp having a filament drive circuit with monostable control
EP2239835B1 (en) * 2009-04-07 2011-09-07 Osram Gesellschaft mit Beschränkter Haftung Converter device and corresponding method
DE102009019625B4 (de) * 2009-04-30 2014-05-15 Osram Gmbh Verfahren zum Ermitteln eines Typs einer Gasentladungslampe und elektronisches Vorschaltgerät zum Betreiben von mindestens zwei unterschiedlichen Typen von Gasentladungslampen
DE102009053617A1 (de) * 2009-11-17 2011-05-19 Osram Gesellschaft mit beschränkter Haftung Elektronisches Vorschaltgerät und Verfahren zum Betreiben mindestens einer Entladungslampe
US9084304B2 (en) * 2012-09-17 2015-07-14 Osram Sylvania Inc. Fault condition of detection circuit
US9414472B2 (en) 2012-09-28 2016-08-09 Lutron Electronics Co., Inc. Filament miswire protection in an electronic dimming ballast
US9232607B2 (en) 2012-10-23 2016-01-05 Lutron Electronics Co., Inc. Gas discharge lamp ballast with reconfigurable filament voltage

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DE4039161C2 (de) * 1990-12-07 2001-05-31 Zumtobel Ag Dornbirn System zur Steuerung der Helligkeit und des Betriebsverhaltens von Leuchtstofflampen
DE4140557A1 (de) * 1991-12-09 1993-06-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb einer oder mehrerer niederdruckentladungslampen
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DE59207908D1 (de) * 1992-09-24 1997-02-27 Knobel Lichttech Schaltungsanordnung zum Betrieb einer Leuchtstofflampe und zur Messung des Lampenstroms
ATE162922T1 (de) * 1992-10-28 1998-02-15 Knobel Lichttech Verfahren und schaltungsanordnung zum zünden von leuchtstofflampen bei vorbestimmter temperatur der lampenkathoden
DE19520999A1 (de) * 1995-06-08 1996-12-12 Siemens Ag Schaltungsanordnung zur Wendelvorheizung von Leuchtstofflampen
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1872630B2 (de) † 2005-04-22 2018-04-11 Tridonic GmbH & Co KG Intelligente flyback-heizung
DE102007011646A1 (de) 2007-03-09 2008-09-11 Tridonicatco Gmbh & Co. Kg Extern konfigurierbar integrierbare Steuerschaltung für Betriebsgeräte für Leuchtmittel
DE102007027179A1 (de) 2007-06-13 2008-12-18 Tridonicatco Gmbh & Co. Kg Steuerschaltung für Leuchtmittel-Betriebsgeräte
DE102011089113A1 (de) 2010-12-22 2012-06-28 Tridonic Gmbh & Co. Kg Verfahren und Betriebsgerät zum Betreiben einer Gasentladungslampe mit Heizwendel
CN103959916A (zh) * 2011-09-02 2014-07-30 荷兰睿保乐Nedap公司 气体放电灯的功率电路
CN103959916B (zh) * 2011-09-02 2017-06-09 荷兰睿保乐Nedap公司 气体放电灯的功率电路

Also Published As

Publication number Publication date
ES2138129T3 (es) 2000-01-01
US5656891A (en) 1997-08-12
FI113148B (fi) 2004-02-27
EP0707438A3 (de) 1997-07-30
ATE185231T1 (de) 1999-10-15
FI954815A0 (fi) 1995-10-10
EP0707438A2 (de) 1996-04-17
FI954815A (fi) 1996-04-14

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