EP1243165B1 - Montage de circuits permettant le fonctionnement d'une lampe a decharge gazeuse - Google Patents

Montage de circuits permettant le fonctionnement d'une lampe a decharge gazeuse Download PDF

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Publication number
EP1243165B1
EP1243165B1 EP00974462A EP00974462A EP1243165B1 EP 1243165 B1 EP1243165 B1 EP 1243165B1 EP 00974462 A EP00974462 A EP 00974462A EP 00974462 A EP00974462 A EP 00974462A EP 1243165 B1 EP1243165 B1 EP 1243165B1
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EP
European Patent Office
Prior art keywords
frequency
switch
switches
mhz
circuitry arrangement
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
EP00974462A
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German (de)
English (en)
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EP1243165A1 (fr
Inventor
Werner Ludorf
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.)
Tridonicatco GmbH and Co KG
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Tridonicatco GmbH and Co KG
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Publication of EP1243165A1 publication Critical patent/EP1243165A1/fr
Application granted granted Critical
Publication of EP1243165B1 publication Critical patent/EP1243165B1/fr
Anticipated expiration legal-status Critical
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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
    • H05B41/282—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
    • H05B41/2825—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 by means of a bridge converter in the final stage
    • H05B41/2828—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 by means of a bridge converter in the final stage using control circuits for the switching elements
    • 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
    • H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Definitions

  • the present invention relates to a circuit arrangement for operating a Gas discharge lamp, in particular a low-pressure discharge lamp, according to the Preamble of claim 1.
  • Gas discharge lamps usually with high frequencies in a range from 20 to 50 kHz operated. At these frequencies, the electron density in the plasma can Fluorescent lamp no longer follow the time course of the current, so that one in the sets a substantially constant average electron density over time. In this case If there is a zero crossing of the mains supply, there is no longer a current gap to reignite the lamp, so that compared to lamp operation in the usual mains frequency of 50 Hz with a constant luminous flux a reduction of the electrical power consumed can be achieved by 8 to 10%.
  • a circuit arrangement, on the one hand, high-frequency lamp operation realized and secondly to a relatively limited extent high-frequency Alternating fields generated is described in WO 86/04752.
  • the lamp is in a full bridge circuit comprising four controllable switches arranged and such controlled that in a first operating phase, two diagonally opposite Switches are opened while one of the two switches is the second Bridge diagonal is permanently closed and the other is clocked at high frequency. During this time the lamp is essentially in the same direction from the current traversed.
  • the lamp is started with an AC voltage operated, the amplitude of which is greater than the amplitude of the low-frequency Voltage signal in normal operation and its frequency less than or equal to the second Is high frequency.
  • the lamp will start with a strong short-term Radio frequency signal operated while after ignition with a low frequency switched DC voltage is driven only by the high frequency is superimposed. In this way, a much better and gentler Lamp start achieved.
  • the values are very low adjustable radiation ensures that no health Impairment of people in the area, because that High frequency signal superimposed on the lamp direct current accordingly. Further is by periodically switching the lamp current with a low frequency for example in the mHz to Hz range, ensures that the electrodes Wear evenly and no uneven coloring or blackening of the lamps occurs at one end.
  • the result is as further advantage that the capacitance and inductance values of some in the Circuitry used components can be reduced so that instead integration of these is possible using discrete components.
  • passive components such as chokes and capacitors, for example Be part of a series resonance circuit arranged in the bridge branch can, or transformers lend themselves to integration, so that a clear Reduction in dimensions of the entire circuit can be achieved.
  • the Integration of the components can, for example, in the context of a multilayer Printed circuit board.
  • the multilayer circuit is preferably implemented by a LTCC (Low Temperature Cofired Ceramic) structure realized, which consists of several low-sintering ceramic layers or foils arranged one above the other, between which there are conductor tracks, capacitive dielectric layers or the like.
  • LTCC Low Temperature Cofired Ceramic
  • a rectifier circuit 1 for example a bridge rectifier or the like, forms the input of the ballast shown in FIG. 1 connected to the AC line voltage u n .
  • a storage capacitor between the positive output of the rectifier circuit 1 and the input of the full bridge circuit functioning electrolytic capacitor C s .
  • the full bridge circuit comprises four controllable switches S1 to S4, which for example are formed by MOS field effect transistors.
  • the bridge branch between the The gas discharge lamp LA is located at the center taps of the two half bridges which is, in particular, a low-pressure discharge lamp.
  • the bridge branch has a series resonance circuit consisting of an inductor L and one Resonance capacitor C1 arranged, the low pressure discharge lamp LA and the resonance capacitor C1 are connected in parallel. Activate the four switches S1 to S4 is carried out by a control circuit, not shown.
  • the circuit arrangement shown in Fig. 1 can by in a known manner Monitoring circuits, which lamp operating parameters - for example the Lamp voltage and lamp current - record and depending on the control influence the switch or the lamp. That would also be Detection of lamp defects or the like possible.
  • Such circuit extensions are not the subject of the present invention and are therefore not intended to continue be taken into account.
  • the frequency f3 is preferably above 1 MHz, particularly advantageously in the range between 2.2 MHz and 3.0 MHz. Since gas discharge lamps are extremely ignitable at these frequencies, the electrodes of the lamp LA may not need to be preheated. However, it can be advantageous if the frequency f3 of the clock signal for the switches S1 and S2 for starting the lamp LA is lowered in the direction of the resonance frequency of the series resonance circuit.
  • the four switches S1 to S4 are activated in normal operation.
  • a first state T 1 the two switches S2 and S3 of the one bridge diagonal are permanently opened, while the switch S1 is permanently closed and the switch S4 is clocked at high frequency.
  • the switching frequency f2 for the switch S4 is preferably between 2.2 MHz and 3.0 MHz, for example approximately 2.65 MHz, and is the same as or higher than the frequency f3.
  • the control circuit then changes to a second state T 2 , in which the two switches S1 and S4 of the previously clocked bridge diagonal are now opened, while switch S3 is now closed and switch S2 is also clocked at high frequency f2.
  • the change between the two states T 1 and T 2 takes place at a very low frequency f1.
  • the lamp voltage U LA also shown in FIG. 3 results.
  • the high frequency f2 is preferably in the megahertz range, while the switching frequency f1 can be, for example, 50 Hz and even significantly less - up to a few mHz.
  • the switching frequency f1 can be, for example, 50 Hz and even significantly less - up to a few mHz.
  • U 1 is lower than the ignition voltage U 3 .
  • the high-frequency signal components for the environmental compatibility of the lamp ballast system must be observed in the first place, a health impairment can be excluded. Otherwise, the starting phase T s is only very short, so that the cause of complaints can also be excluded here.
  • chokes and capacitors with relatively low capacitance and inductance values can be used for the series resonant circuit.
  • Such multilayer circuits which consist of a plurality of low-sintering ceramic layers arranged one above the other, are already used in a wide range.
  • this represents a particularly advantageous embodiment since in this case the dimensions of the switching arrangement or of the entire ballast can be significantly reduced, which in turn has the consequence that further shielding devices can be attached to the ballast without great effort.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Spectrometry And Color Measurement (AREA)

Claims (13)

  1. Montage de circuit destiné à faire fonctionner une lampe à décharge gazeuse, comportant
    un circuit en pont intégral auquel est appliquée une tension continue et qui comprend quatre interrupteurs commandés (S1 à S4),
    un premier interrupteur (S1) étant monté en série avec un deuxième interrupteur (S2) et un troisième interrupteur (S3) étant monté en série avec un quatrième interrupteur (S4) et le premier interrupteur (S1) étant relié au troisième interrupteur (S3) et le deuxième interrupteur (S2) étant relié au quatrième interrupteur (S4), et
    une lampe à décharge gazeuse (LA) étant disposée dans une branche du pont qui relie un point nodal entre le premier interrupteur (S1) et le deuxième interrupteur (S2) à un point nodal entre le troisième interrupteur (S3) et le quatrième interrupteur (S4),
    et un circuit de commande, qui commande en mode de fonctionnement normal de la lampe à décharge gazeuse (LA) les quatre interrupteurs (S1 à S4) de sorte qu'il commute à une première fréquence (f1) alternativement entre un premier état et un deuxième état (T1, T2),
       dans le premier état (T1), les deuxième et troisième interrupteurs (S2, S3) étant ouverts, le premier interrupteur (S1) étant fermé et le quatrième interrupteur (S4) étant alternativement ouvert et fermé à une deuxième fréquence (f2) qui est supérieure à la première fréquence (f1), et
       dans le deuxième état (T2), les premier et quatrième interrupteurs (S1, S4) étant ouverts, le troisième interrupteur (S3) étant fermé et le deuxième interrupteur (S2) étant alternativement ouvert et fermé à la deuxième fréquence (f2),
    caractérisé en ce que le circuit de commande commande les quatre interrupteurs (S1 à S4) dans une phase de démarrage (Ts) de sorte que le quatrième interrupteur (S4) est fermé, le troisième interrupteur (S3) est ouvert et les premier et deuxième interrupteurs (S1, S2) sont alternativement ouverts et fermés à une troisième fréquence (f3).
  2. Montage de circuit selon la revendication 1, caractérisé en ce que la deuxième fréquence (f2) est supérieure à 1 MHz.
  3. Montage de circuit selon la revendication 2, caractérisé en ce que la deuxième fréquence (f2) se trouve dans la gamme allant de 2,2 MHz à 3,0 MHz.
  4. Montage de circuit selon l'une des revendications 1 à 3, caractérisé en ce que la troisième fréquence (f3) est supérieure à 1 MHz.
  5. Montage de circuit selon le revendication 4, caractérisé en ce que la troisième fréquence (f3) se trouve dans la gamme allant de 2,2 MHz à 3,0 MHz.
  6. Montage de circuit selon l'une des revendications 1 à 5, caractérisé en ce qu'un circuit de résonance série (L, C1) est disposé dans la branche du pont.
  7. Montage de circuit selon la revendications 6, caractérisé en ce que le circuit de résonance série comporte un ballast inductif (L) et un condensateur de résonance (C1), la lampe à décharge (LA) étant en parallèle avec le condensateur de résonance (C1).
  8. Montage de circuit selon l'une des revendications précédentes, caractérisé en ce que des composants passifs du montage de circuit sont intégrés dans un circuit multicouche.
  9. Montage de circuit selon la revendication 8, caractérisé en ce que le circuit multicouche consiste en une structure LTCC qui se compose de plusieurs couches de céramique faiblement frittées disposées les unes au-dessus des autres.
  10. Montage de circuit selon l'une des revendications précédentes, caractérisé en ce qu'il fait partie d'un ballast électronique qui comporte un circuit redresseur (1), relié à la tension du secteur (un), qui alimente le montage de circuit.
  11. Procédé destiné à faire fonctionner une lampe à décharge gazeuse (LA), dans lequel la lampe à décharge gazeuse (LA) est utilisée en mode de fonctionnement normal avec une tension alternative qui se compose d'un premier signal à une première fréquence (f1) et à une première amplitude (U1) auquel est superposé un deuxième signal à une deuxième fréquence (f2) et à une deuxième amplitude (U2), la deuxième fréquence (f2) étant supérieure à la première fréquence (f1) et la première amplitude (U1) étant supérieure à la deuxième amplitude (U2),
    caractérisé en ce que la lampe à décharge gazeuse est utilisée dans une phase de démarrage avec une tension alternative dont l'amplitude (U3) est supérieure à la première amplitude (U1) et dont la fréquence (f3) est inférieure ou égale à deuxième fréquence (f2).
  12. Procédé selon la revendication 11, caractérisé en ce que la deuxième fréquence (f2) est supérieure à 1 MHz.
  13. Procédé selon la revendication 12, caractérisé en ce que la deuxième fréquence (f2) se trouve dans une gamme allant de 2,2 MHz à 3,0 MHz.
EP00974462A 1999-12-27 2000-10-26 Montage de circuits permettant le fonctionnement d'une lampe a decharge gazeuse Expired - Lifetime EP1243165B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19963289A DE19963289A1 (de) 1999-12-27 1999-12-27 Schaltungsanordnung zum Betreiben einer Gasentladungslampe
DE19963289 1999-12-27
PCT/EP2000/010557 WO2001049082A1 (fr) 1999-12-27 2000-10-26 Montage de circuits permettant le fonctionnement d'une lampe a decharge gazeuse

Publications (2)

Publication Number Publication Date
EP1243165A1 EP1243165A1 (fr) 2002-09-25
EP1243165B1 true EP1243165B1 (fr) 2003-07-23

Family

ID=7934691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00974462A Expired - Lifetime EP1243165B1 (fr) 1999-12-27 2000-10-26 Montage de circuits permettant le fonctionnement d'une lampe a decharge gazeuse

Country Status (6)

Country Link
US (1) US6747423B2 (fr)
EP (1) EP1243165B1 (fr)
AT (1) ATE245887T1 (fr)
AU (1) AU1275801A (fr)
DE (2) DE19963289A1 (fr)
WO (1) WO2001049082A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6803730B2 (en) * 2001-03-21 2004-10-12 International Rectifier Corporation Single stage PFC + ballast control circuit/general purpose power converter
GB0427682D0 (en) * 2004-12-17 2005-01-19 Havard Engineering Plc Power control
JP4956019B2 (ja) * 2005-03-02 2012-06-20 パナソニック株式会社 点灯ユニット及びランプ
DE102005034505A1 (de) * 2005-07-20 2007-02-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanorndung mit transformatorlosem Wandler mit Drossel für den gepulsten Betrieb von dielektrischen Barriere-Entladungslampen
DE102006026750A1 (de) * 2006-06-08 2007-12-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT392384B (de) * 1985-02-04 1991-03-25 Zumtobel Ag Vorschaltgeraet zum betrieb von gasentladungslampen mit gleichstrom
US4734624A (en) * 1985-07-25 1988-03-29 Matsushita Electric Works, Ltd. Discharge lamp driving circuit
DE4123187A1 (de) * 1991-07-12 1993-01-14 Tridonic Bauelemente Vorschaltgeraet zum pulsbetrieb von gasentladungslampen
JPH1022083A (ja) * 1996-07-05 1998-01-23 Matsushita Electric Works Ltd 放電灯点灯装置
DE19819027A1 (de) * 1998-04-29 1999-11-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe
AU747501B2 (en) * 1998-09-18 2002-05-16 Knobel Ag Lichttechnische Komponenten Circuit for operating gas discharge lamps
US6437515B1 (en) * 2000-01-18 2002-08-20 Matsushita Electric Works, Ltd. Discharge lamp lighting device of high startability with high pulse voltage

Also Published As

Publication number Publication date
US20030025466A1 (en) 2003-02-06
DE19963289A1 (de) 2001-06-28
WO2001049082A1 (fr) 2001-07-05
DE50003045D1 (de) 2003-08-28
ATE245887T1 (de) 2003-08-15
US6747423B2 (en) 2004-06-08
AU1275801A (en) 2001-07-09
EP1243165A1 (fr) 2002-09-25

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