EP1225792B1 - Dispositif de contrôle de chauffage d'électrode dans les lampes à décharge - Google Patents

Dispositif de contrôle de chauffage d'électrode dans les lampes à décharge Download PDF

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Publication number
EP1225792B1
EP1225792B1 EP01129891A EP01129891A EP1225792B1 EP 1225792 B1 EP1225792 B1 EP 1225792B1 EP 01129891 A EP01129891 A EP 01129891A EP 01129891 A EP01129891 A EP 01129891A EP 1225792 B1 EP1225792 B1 EP 1225792B1
Authority
EP
European Patent Office
Prior art keywords
electronic ballast
frequency
discharge lamps
heating transformer
series
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
EP01129891A
Other languages
German (de)
English (en)
Other versions
EP1225792A1 (fr
Inventor
Bernhard Schemmel
Michael Dr. Weirich
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 GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1225792A1 publication Critical patent/EP1225792A1/fr
Application granted granted Critical
Publication of EP1225792B1 publication Critical patent/EP1225792B1/fr
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
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • 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

Definitions

  • the invention is based on an electronic operating device according to the preamble of claim 1.
  • An electronic control gear mainly contains an AC voltage generator, which provides an AC voltage from an oscillation frequency which is significantly higher than the frequency of the mains voltage.
  • the electronic control gear must start a connected discharge lamp and then manage their operation.
  • the start of a discharge lamp Electrode coils can be divided into preheating and ignition. A current flows through the electrode coils to preheat them brings a temperature that allows a subsequent ignition, which is low Brings damage to the electrode coil. Is the discharge lamp ignited, the discharge lamp begins to operate. In this state the Electricity for gas discharge in the lamp through the electrode coil connections fed. A current that flows in at an electrode coil connection divides now into a part that flows into the gas discharge and a part that flows into the other Connection of the same electrode coil flows out again.
  • the part of the stream that does not flow into the gas discharge causes an additional one compared to the gas discharge Heating the electrode coil, which is why this current is referred to as additional heating current becomes.
  • additional heating current should be compared to the current for the Gas discharge must be low (maximum 20%).
  • the electronic operating device contains a frequency-selective device that only permits preheating of the electrode coils if the oscillation frequency of the electronic operating device is within a narrow frequency band that is determined by the frequency-selective device.
  • the frequency-selective device is preferably formed by an oscillating circuit consisting of an inductor L and a capacitor C.
  • this frequency does not have to be set exactly. Rather, it is enough that the oscillation frequency of the electronic control gear for preheating is within a narrow frequency band around the resonance frequency fres. In the Practice has shown that a frequency band of +/- 10% around the resonance frequency is sufficient.
  • the inductance of the resonant circuit can be determined by the primary inductance of the heating transformer are formed. That the inductance, which is the primary winding of the heating transformer, forms together with one connected in series Series resonance capacitor or with a parallel resonance capacitor connected in parallel the resonant circuit.
  • the resonant circuit can also open the secondary side of the heating transformer. However, there the impedance level is lower, there are high resonance currents, which place a high load on the component represent.
  • a heating transformer can be used be selected with a loose coupling.
  • the resonant circuit can also release voltage due to harmonics be stimulated. Since no additional heating current according to the invention during operation of the lamp the electronic control gear may flow at the operating frequency do not excite the resonant circuit with a harmonic. With operating frequency is meant the oscillation frequency at which the electronic control gear during operation of the lamp works. Because a square wave is only an odd number According to the invention, the resonant circuit is designed so that that its resonant frequency is at or near twice the operating frequency comes to lie. The inventive idea is then realized if the resonance frequency fres of the resonant circuit with a tolerance of +/- 20% in the double Operating frequency.
  • FIG 1 is an electronic control gear with a connected discharge lamp LP shown.
  • the AC voltage generator G gives an output A with respect of an earth potential M from an AC voltage. The frequency of this AC voltage is much higher than the mains frequency.
  • a coupling capacitor C11 Between exit A and the ground potential M is the series connection of a coupling capacitor C11, a lamp inductor L11 and an ignition capacitor C12, C12 with a connection is at the ground potential M.
  • C11 is used to disconnect one Possibly existing DC component of the one supplied by the alternating voltage generator G.
  • L11 is used to adapt the discharge lamp LP to the AC voltage generator G.
  • C12 is primarily used to generate an ignition voltage for the ignition of the discharge lamp LP.
  • C12 can also be used together with L11 used to adapt the discharge lamp LP to the alternating voltage generator G. become.
  • the discharge lamp LP is each with an electrode filament connection connected in parallel to C12.
  • the series connection is between output A and ground potential M.
  • a trapezoidal capacitor C13 and a resonant circuit according to the invention consists of the parallel connection of a parallel resonance capacitor C14 and the primary winding T11 of a heating transformer.
  • the trapezoidal capacitor C13 is used to couple the resonant circuit to the alternator G.
  • C13 can be used to relieve switches from switches in the alternator G are included.
  • the resonant circuit, consisting of C14 and T11 has a resonance frequency fres1, based on the formula above can be calculated. For the inductance L indicated in the formula, the is on to use the primary winding T11 of the heating transformer effective primary inductance.
  • the heating transformer can be designed with a loose coupling in order to achieve sufficiently high values for the primary inductance.
  • the heating transformer has a secondary winding connected to each electrode coil T12 and T13.
  • the resonance frequency fres1 is designed such that that it is close to twice the operating frequency. So that is at the operating frequency the impedance of the resonant circuit compared to the impedance of C13 low. There is therefore only a small voltage at the primary winding T11 and there is only a negligibly small additional heating current in the electrode filaments fed.
  • the alternating voltage generator G a voltage whose frequency is close to the resonance frequency fres1.
  • a high current flows in the primary winding T11 of the heating transformer is transferred to the secondary windings T12 and T13 for preheating.
  • the trapezoidal capacitor C13 is omitted in FIGS. Possibly can also in Figures 2 and 3, a trapezoidal capacitor between the Output A and the ground potential M switched to the switch relief mentioned above become.
  • the resonant circuit T21 / C23 or T31 / C33 not with a square wave current from the alternating voltage generator G, but, due to the lamp choke L21 or L31, only with an almost sinusoidal current is applied, the resonance frequency fres1 des Resonant circuit T21 / C23 or T31 / C33 not close to twice the operating frequency lie.
  • FIG. 1 Another difference between Figure 1 and Figure 2 is that the Oscillating circuit, consisting of T21 and C23, in Figure 2 in series with the coupling capacitor C21 is switched. Furthermore, the explanations for FIG. 1 apply accordingly.
  • FIG. 4 shows the resonant circuit according to the invention not designed as a parallel resonant circuit, but as a series resonant circuit. He is formed from the series connection of a series resonance capacitor C43 and Primary winding of the heating transformer T41. At the operating frequency is the impedance the primary inductance at T41 compared to the impedance of C43. There is therefore only a small voltage on the primary winding T41 and it will only a negligibly small additional heating current is fed into the electrode filaments. Otherwise, the statements relating to FIG. 1 apply accordingly.
  • the exemplary embodiments are each equipped with a lamp.
  • the invention using techniques that are known to a person skilled in the art and from which State of the art are also transferred to applications with multiple lamps become.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Claims (11)

  1. Dispositif de contrôle électronique pour le préchauffage, l'allumage et le fonctionnement de lampes à décharge (LP), dans lequel les filaments d'électrodes de lampes à décharge raccordés (LP) lors du fonctionnement conduisent pour l'essentiel le courant de la décharge gazeuse,
       caractérisé par le fait que le dispositif de contrôle électronique comprend un dispositif sélectif en fréquence qui n'autorise un préchauffage desdits filaments d'électrodes que si la fréquence d'oscillation du dispositif de contrôle électronique se trouve à l'intérieur d'une bande de fréquence étroite qui est déterminée par le dispositif sélectif en fréquence.
  2. Dispositif de contrôle électronique selon la revendication 1, caractérisé par le fait que le dispositif sélectif en fréquence contient un transformateur chauffant (T11/T12/T13, T21/T22/T23, T31/T32/T33, T41/T42/T43).
  3. Dispositif de contrôle électronique selon la revendication 2, caractérisé par le fait que le transformateur chauffant (T11/T12/T13, T21/T22/T23, T31/T32/T33, T41/T42/T43) est réalisé avec un couplage lâche.
  4. Dispositif de contrôle électronique selon la revendication 2, caractérisé par le fait qu'un condensateur de résonance série (C43) est branché en série avec l'enroulement primaire (T41) du transformateur chauffant.
  5. Dispositif de contrôle électronique selon la revendication 4, caractérisé par le fait que le condensateur de résonance série (C43) comporte conjointement à l'inductance primaire du transformateur chauffant une fréquence de résonance qui est proche du double de la valeur de la fréquence d'oscillation pour laquelle le dispositif de contrôle électronique oscille pendant le fonctionnement de lampes à décharge raccordées (LP).
  6. Dispositif de contrôle électronique selon la revendication 2,
    caractérisé par le fait qu'un condensateur de résonance parallèle (C14, C23, C33) est branché en parallèle avec l'enroulement primaire (T11, T21, T31) du transformateur chauffant.
  7. Dispositif de contrôle électronique selon la revendication 6, caractérisé par le fait que le condensateur de résonance parallèle (C14, C23, C33) comporte conjointement à l'inductance primaire du transformateur chauffant une fréquence de résonance qui est proche du double de la valeur de la fréquence d'oscillation pour laquelle le dispositif de contrôle électronique oscille pendant le fonctionnement de lampes à décharge raccordées (LP).
  8. Dispositif de contrôle électronique selon la revendication 6, caractérisé par le fait que l'enroulement primaire (T31) du transformateur chauffant est branché en série avec un condensateur d'allumage (C32).
  9. Dispositif de contrôle électronique selon la revendication 6, caractérisé par le fait que l'enroulement primaire (T11) du transformateur chauffant est branché en série avec un condensateur trapézoïdal (C13).
  10. Dispositif de contrôle électronique selon la revendication 6, caractérisé par le fait que l'enroulement primaire (T21) du transformateur chauffant est branché en série avec un condensateur de couplage (C21).
  11. Procédé pour le préchauffage, l'allumage et le fonctionnement de lampes à décharge (LP) avec un dispositif de contrôle électronique,
       caractérisé par le fait que
    pour le préchauffage, le dispositif de contrôle électronique fonctionne à une fréquence d'oscillation qui se trouve à l'intérieur d'une bande de fréquence dans laquelle un dispositif sélectif en fréquence du dispositif de contrôle électronique autorise un préchauffage,
    pour l'allumage, le dispositif de contrôle électronique travaille à une fréquence d'oscillation pour laquelle est produite au niveau des lampes à décharge une tension qui conduit à un allumage des lampes à décharge,
    pour le fonctionnement des lampes à décharge, le dispositif de contrôle électronique travaille à une fréquence d'oscillation qui se trouve à l'intérieur d'une bande de fréquence dans laquelle le dispositif sélectif en fréquence du dispositif de contrôle électronique supprime un courant de chauffage supplémentaire.
EP01129891A 2001-01-22 2001-12-14 Dispositif de contrôle de chauffage d'électrode dans les lampes à décharge Expired - Lifetime EP1225792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102837A DE10102837A1 (de) 2001-01-22 2001-01-22 Betriebsgerät für Gasentladungslampen mit Abschaltung der Wendelheizung
DE10102837 2001-01-22

Publications (2)

Publication Number Publication Date
EP1225792A1 EP1225792A1 (fr) 2002-07-24
EP1225792B1 true EP1225792B1 (fr) 2003-08-13

Family

ID=7671419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129891A Expired - Lifetime EP1225792B1 (fr) 2001-01-22 2001-12-14 Dispositif de contrôle de chauffage d'électrode dans les lampes à décharge

Country Status (10)

Country Link
US (1) US6555970B2 (fr)
EP (1) EP1225792B1 (fr)
JP (1) JP2002260887A (fr)
KR (1) KR100826323B1 (fr)
CN (1) CN100386003C (fr)
AT (1) ATE247373T1 (fr)
AU (1) AU777106B2 (fr)
CA (1) CA2368725A1 (fr)
DE (2) DE10102837A1 (fr)
TW (1) TW526681B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7592753B2 (en) * 1999-06-21 2009-09-22 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
DE10200053A1 (de) 2002-01-02 2003-07-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Betriebsgerät für Entladungslampen mit Vorheizeinrichtung
DE10304544B4 (de) 2003-02-04 2006-10-12 Hep Tech Co.Ltd. Elektronisches Vorschaltgerät
WO2007093927A1 (fr) * 2006-02-14 2007-08-23 Koninklijke Philips Electronics N.V. Dispositif d'éclairage à intensité réglable
US7821208B2 (en) * 2007-01-08 2010-10-26 Access Business Group International Llc Inductively-powered gas discharge lamp circuit
CN107930863B (zh) * 2017-12-28 2023-10-20 太原智慧产业园管理有限公司 一种解决醋沉淀用的离心分离机

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
BE786136A (nl) * 1971-07-13 1973-01-11 Philips Nv Inrichting voor het voeden van tenminste een gas- en/of dampontladingslamp
US4717863A (en) * 1986-02-18 1988-01-05 Zeiler Kenneth T Frequency modulation ballast circuit
KR890003258A (ko) * 1987-07-29 1989-04-13 권영석 스위칭 주파수 down에 의한 방전등 시동회로
KR910016224A (ko) * 1990-02-15 1991-09-30 토마스 피.에간, 쥬니어 형광등 점등 및 동작을 위한 회로
DE4236145A1 (de) * 1992-10-27 1994-04-28 Semperlux Gmbh Digitales 2-Stufen-Spar-EVG
DE19520999A1 (de) 1995-06-08 1996-12-12 Siemens Ag Schaltungsanordnung zur Wendelvorheizung von Leuchtstofflampen
DE19546588A1 (de) * 1995-12-13 1997-06-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren und Schaltungsanordnung zum Betrieb einer Entladungslampe
JP2982804B2 (ja) * 1998-01-16 1999-11-29 サンケン電気株式会社 放電灯点灯装置
JP3532760B2 (ja) * 1998-04-01 2004-05-31 松下電器産業株式会社 放電ランプ点灯装置
US7717863B2 (en) * 2002-04-19 2010-05-18 Pelikan Technologies, Inc. Method and apparatus for penetrating tissue

Also Published As

Publication number Publication date
DE50100490D1 (de) 2003-09-18
JP2002260887A (ja) 2002-09-13
CA2368725A1 (fr) 2002-07-22
AU1196102A (en) 2002-11-14
ATE247373T1 (de) 2003-08-15
CN1367639A (zh) 2002-09-04
CN100386003C (zh) 2008-04-30
DE10102837A1 (de) 2002-07-25
KR20020062571A (ko) 2002-07-26
EP1225792A1 (fr) 2002-07-24
KR100826323B1 (ko) 2008-05-02
US6555970B2 (en) 2003-04-29
TW526681B (en) 2003-04-01
AU777106B2 (en) 2004-09-30
US20020125807A1 (en) 2002-09-12

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