EP1176854A2 - Réduction de la tension aux bornes des connections de ballasts pour lampes à décharge - Google Patents

Réduction de la tension aux bornes des connections de ballasts pour lampes à décharge Download PDF

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Publication number
EP1176854A2
EP1176854A2 EP01116059A EP01116059A EP1176854A2 EP 1176854 A2 EP1176854 A2 EP 1176854A2 EP 01116059 A EP01116059 A EP 01116059A EP 01116059 A EP01116059 A EP 01116059A EP 1176854 A2 EP1176854 A2 EP 1176854A2
Authority
EP
European Patent Office
Prior art keywords
voltage
output terminal
reference potential
discharge lamps
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Withdrawn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
EP01116059A
Other languages
German (de)
English (en)
Other versions
EP1176854A3 (fr
Inventor
Felix Dr. Franck
Markus Heckmann
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 EP1176854A2 publication Critical patent/EP1176854A2/fr
Publication of EP1176854A3 publication Critical patent/EP1176854A3/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Withdrawn legal-status Critical Current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
    • H05B41/14—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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • 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
    • 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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—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 electronic operating device for gas discharge lamps according to the preamble of claim 1. It is in particular circuit topologies that identify the potential of at least one output terminal (2,3) reduce compared to the earth potential.
  • the terminals are under output terminals of an operating device to which lamps are connected. Become If no details are given on the reference to a potential, the potentials in in relation to the earth potential.
  • the potential of the output terminals of an electronic control gear for gas discharge lamps should be kept as small as possible for the following reasons: Firstly, if the potential of an output terminal is too high, an insulation problem arises. Leakage currents to earth potential can no longer be tolerated; the touch safety of the devices can U. can no longer be guaranteed. There the level of the potential of an output terminal is also a safety-relevant variable their effective value is limited by the IEC standard 60928.
  • the object of the present invention is an operating device according to the preamble of claim 1, in which the maximum of the potentials of the output terminals is as low as possible.
  • An electronic control gear for gas discharge lamps usually has one AC voltage generator (G), which provides an AC voltage, which has a frequency that is significantly higher than the frequency of the mains voltage.
  • the AC voltage is usually unipolar at a generator output (1) with respect to a reference potential (E) that is close to the earth potential.
  • a value that is suitable for operating the lamp is the AC voltage in a reactance network (Z) is fed.
  • This provides a first output terminal (2) ready, to which one or more lamps connected in series are connected.
  • the second output terminal (3) leads to the via the coupling capacitor (CB) Reference potential (E).
  • the coupling capacitor carries the DC voltage component AC voltage source, so that the lamp with DC voltage-free AC voltage is operated. It is often necessary to use the coupling capacitor (CB) is connected to the reference potential (E) so that the one connected to it Voltage from other components of the control gear can be better used.
  • the potential must be reduced by at least one output terminal (2,3).
  • the first output terminal (2) has the higher potential, which is why this is primarily must be reduced.
  • this takes place in that in the connection between the second output terminal (3) and the reference potential (E)
  • An electrical component (VC) is inserted in series as a voltage source acts.
  • the reduction voltage (UVC) formed there must have a voltage profile have, which is suitable, the potential of the first output terminal (2) reduce.
  • This condition can e.g. B. are adhered to by the fact that electrical component is a controlled voltage source.
  • the control is then so choose that the frequency of the reduction voltage (UVC) equals the frequency is the AC voltage generated by the AC voltage generator (G).
  • Said controlled voltage source can be cost-effectively coupled Realize coils.
  • the potential of the second output terminal (3) may be taken by the above measures naturally do not become greater than the potential of the first output terminal (2). Ideally, the potentials of the output terminals (2,3) are the same.
  • Figure 1 shows the series connection of an alternating voltage generator (G), one Reactance network (Z), a lamp (LP), one acting as a voltage source electrical component (VC) and a coupling capacitor (CB).
  • the AC voltage generator (G) feeds its voltage between the generator output (1) and the reference potential (E).
  • the reactance network (Z) is essentially connected between the generator output (1) and the first output terminal (2). As indicated by dashed lines, the reactance network (Z) can also have connections to the Have reference potential (E) and to the second output terminal (3).
  • the lamp (LP) lies between the first (2) and the second output terminal (3). Instead of One lamp (LP) can also operate several lamps in series. Between the second output terminal (3) and the reference potential (E) Series connection of the coupling capacitor (CB) and an electrical one Component (VC) that acts as a voltage source.
  • the reactance network (Z) now consists of a lamp choke (L1) and a resonance capacitor (CR1).
  • the lamp choke (L1) is between the generator output (1) of the AC voltage generator (G) and the first output terminal (2).
  • the resonance capacitor (CR1) is parallel to the lamp (LP).
  • the electrical Component (VC) is designed as a coupled inductance (L11).
  • the coupling with the lamp choke (L1) is indicated by the common core (4).
  • the coupled one Inductance (L11) acts like one of the voltage across the lamp choke (L1) controlled voltage source.
  • the coupling between the lamp choke (L1) and the coupled inductance (L11) is designed so that the potential of the first Output terminal (2) is reduced.
  • the value of the inductance of the lamp choke (L1) and the coupled inductance (L11) is selected so that a a desired voltage determined by the alternating voltage generator (G) Lamp current.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP01116059A 2000-07-28 2001-07-02 Réduction de la tension aux bornes des connections de ballasts pour lampes à décharge Withdrawn EP1176854A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10036952A DE10036952A1 (de) 2000-07-28 2000-07-28 Reduzierung der Klemmenspannung von Betriebsgeräten für Gasentladungslampen
DE10036952 2000-07-28

Publications (2)

Publication Number Publication Date
EP1176854A2 true EP1176854A2 (fr) 2002-01-30
EP1176854A3 EP1176854A3 (fr) 2004-12-15

Family

ID=7650628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01116059A Withdrawn EP1176854A3 (fr) 2000-07-28 2001-07-02 Réduction de la tension aux bornes des connections de ballasts pour lampes à décharge

Country Status (7)

Country Link
US (1) US6486613B2 (fr)
EP (1) EP1176854A3 (fr)
KR (1) KR20020010550A (fr)
CN (1) CN1270586C (fr)
AU (1) AU781206B2 (fr)
CA (1) CA2354247A1 (fr)
DE (1) DE10036952A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005001326A1 (de) * 2005-01-11 2006-07-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektronisches Vorschaltgerät (EVG)
DE102005028672A1 (de) * 2005-06-21 2006-12-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Glättungsschaltung zur Verbesserung der EMV

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326114A1 (fr) 1988-01-26 1989-08-02 Tokyo Electric Co., Ltd. Dispositif de commande pour une lampe à décharge
EP0855850A1 (fr) 1997-01-27 1998-07-29 MAGNETEK S.p.A. Alimentation pour lampes à décharge avec un circuit résonant équilibré

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942069A (en) * 1973-09-13 1976-03-02 Nec Sylvania Corporation Discharge lamp lighting apparatus and method
JPS62108498A (ja) * 1985-11-06 1987-05-19 株式会社東芝 放電灯点灯装置
US4808888A (en) * 1986-11-28 1989-02-28 Gte Products Corporation Starting circuit for gaseous discharge lamps
FR2611326A1 (fr) * 1987-02-24 1988-08-26 Courier De Mere Henri Ballast electronique
DE4442898A1 (de) * 1994-12-02 1996-06-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren und Schaltungsanordnung zum Starten und Betreiben von Hochdruck-Entladungslampen
US5847909A (en) * 1997-04-17 1998-12-08 France/Scott Fetzer Company Safety-enhanced transformer circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326114A1 (fr) 1988-01-26 1989-08-02 Tokyo Electric Co., Ltd. Dispositif de commande pour une lampe à décharge
EP0855850A1 (fr) 1997-01-27 1998-07-29 MAGNETEK S.p.A. Alimentation pour lampes à décharge avec un circuit résonant équilibré

Also Published As

Publication number Publication date
DE10036952A1 (de) 2002-02-07
AU781206B2 (en) 2005-05-12
US6486613B2 (en) 2002-11-26
CA2354247A1 (fr) 2002-01-28
CN1336784A (zh) 2002-02-20
AU5769401A (en) 2002-01-31
US20020047602A1 (en) 2002-04-25
CN1270586C (zh) 2006-08-16
KR20020010550A (ko) 2002-02-04
EP1176854A3 (fr) 2004-12-15

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