EP1583403B1 - Vorschaltgerät für mindestens eine Lampe - Google Patents

Vorschaltgerät für mindestens eine Lampe Download PDF

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Publication number
EP1583403B1
EP1583403B1 EP05004716A EP05004716A EP1583403B1 EP 1583403 B1 EP1583403 B1 EP 1583403B1 EP 05004716 A EP05004716 A EP 05004716A EP 05004716 A EP05004716 A EP 05004716A EP 1583403 B1 EP1583403 B1 EP 1583403B1
Authority
EP
European Patent Office
Prior art keywords
inductance
lamp
resonant
braking
ballast according
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.)
Not-in-force
Application number
EP05004716A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1583403A1 (de
Inventor
Herbert Kästle
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
Osram GmbH
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Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of EP1583403A1 publication Critical patent/EP1583403A1/de
Application granted granted Critical
Publication of EP1583403B1 publication Critical patent/EP1583403B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0009—Storing devices ; Supports, stands or holders
    • A47L9/0018—Storing devices ; Supports, stands or holders integrated in or removably mounted upon the suction cleaner for storing parts of said suction cleaner
    • A47L9/0036—Storing devices ; Supports, stands or holders integrated in or removably mounted upon the suction cleaner for storing parts of said suction cleaner specially adapted for holding the suction hose
    • 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
    • H05B41/2827—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 specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/248—Parts, details or accessories of hoses or pipes
    • 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps

Definitions

  • the present invention relates to a ballast for at least one lamp, in particular a ballast according to the preamble of claim 1.
  • the problem underlying the invention is the sake of clarity for the sake of the example of a high-pressure discharge lamp shown, for example, in the WO 02/30162 A2 , of the WO 03/024161 A1 or the US 2002/0041165 A1 are described.
  • the invention can also be used in other types of lamps, in particular other circuit topologies with resonance ignition.
  • a sinusoidal AC operating voltage is required, the operating frequency depending on the geometry of the lamp burner in the range between 45 kHz to 55 kHz usually wobbled in a sawtooth 100 Hz cycle or gesweept.
  • the Sweep congress generally prevents the excitation of acoustic resonances and thus contributes to the stabilization of the plasma arc.
  • the output stage of an electronic ballast for the above-mentioned operating frequency range is usually realized with an LC resonant circuit.
  • the LC output circuit in addition to its impedance and filtering behavior can be designed so that by resonant excitation, the generation of Lampeenzündposition, typically depending on the lamp at 3.5 kV to 5 kV is possible.
  • the possibility of resonant generation of the ignition voltage is a special constraint on the design and dimensioning of the LC circuit, since in this case both the inductance used and the capacity used a sufficiently high energy carrying capacity must have, so that the necessary Zündnapsard can be achieved. In the case of the inductance, therefore, an air gap is usually to be provided.
  • High-pressure discharge lamps now have the property that immediately after the ignition breakdown the nominal operating mode with nominal lamp impedance does not set, but the still cold lamp reacts with a gas amplification breakthrough and often completely immediately after the ignition breakdown for a short time, typically 0.5 ⁇ s to 100 ⁇ s becomes conductive, d. H. the burning voltage can be less than 5V. With respect to the resonant output circuit charged to ignition voltage, this represents a sudden short circuit over which the effective capacitances charged to ignition voltage (including lamp line) are correspondingly discharged quickly and abruptly. Depending on the size of the effective capacitance and the remaining line inductances, these brief short-circuit currents can rise to several 100 A.
  • the US 2001/0020830 A1 basically relates to circuit arrangements for high-pressure discharge lamps and in particular the implementation of ignition circuits in rectangular ECGs.
  • a rectangular operation basically means nothing other than an alternating DC operation, ie the lamp is principally operated with direct current, but for reasons of unilateral electrode wear, the current direction is changed now and then. The latter occurs at a low frequency in the range of approximately 100 Hz.
  • the adaptation of the intermediate circuit voltage of the electronic ballast to the usually lower lamp voltage is carried out using a buck converter circuit. In this case, a throttle was operated on a capacitor for smoothing.
  • the inductor L2 is operated on the capacitor C2
  • Fig. 5 This reference the reactor L1 is operated on the capacitor C1. Since the lamps usually tolerate little ripple, the smoothing capacitor usually has to be made large, for example 100 nF. Since, as stated, large smoothing capacitor to be selected is arranged parallel to the lamp, there is the problem that the ignition is difficult or completely prevented, as well as the large smoothing capacitor must be charged by the ignition voltage.
  • a resonant circuit comprising the inductor L1 and the capacitor C1 is switchably inserted.
  • the smoothing capacitor C2 does not see the ignition voltage here.
  • the inductor L1 is arranged as a useless part in the lamp current path and should not need too much power at a suitable dimensioning.
  • the lamp now sees the high resonance current as a high resonance voltage and thereby ignites. Because of her for the task of US 2001/0020830 A1 When dimensioned dimensioning is associated with a low current-carrying capacity, the inductances can not act as brake inductances in the sense of the present invention.
  • the object of the present invention is to develop a generic ballast in such a way that it allows an improved, especially safer lamp start. In this case, in particular, the stress to which the components are exposed, reduced and thus a longer life of such a ballast can be achieved.
  • the invention is based on the finding that the current can be kept below a predefinable, still acceptable threshold immediately after Zünd bornbruch when a brake inductance is arranged in series with the lamp.
  • the term alternating current is understood to mean the circuit structure that results in the AC equivalent circuit diagram.
  • the resonance capacitance is arranged parallel to the first and second terminal for the lamp when it is directly connected to ground or indirectly, for example via a power supply, is coupled to the ground or combinations of these two variants.
  • a preferred embodiment is characterized in that the resonance inductance and the first brake inductance are wound on a common core.
  • This concept is based on the recognition that a separate brake inductance, which is not wound on the core of the resonance inductance, also has to be made large, so that it can carry the same energy as the resonance inductance. In particular, it would also have to have a core with an air gap. The measure of this preferred embodiment can thus save a core. This results in a reduction of the costs as well as the size.
  • winding sense of the resonance inductance and this brake inductance on the core is in the same direction.
  • a second brake inductor arranged serially to the resonant capacitance.
  • the first and second Bremsindukt ceremonies are the same size.
  • the resonant inductance When the resonant inductance, the first and second brake inductances are wound on the same core, in particular in the same direction, the effects of the two brake inductances compensate each other in the nominal mode, and the resonant arrangement including its filtering effect is identical to the arrangement with only a single resonant choke.
  • the leakage inductance resulting from the coupling of the first and the second brake inductance is at least 10 ⁇ H, preferably at least 40 ⁇ H.
  • the values of the brake inductances themselves are preferably at least 60 ⁇ H, more preferably at least 120 ⁇ H.
  • the first brake inductance or the first and the second brake inductance depending on how sensitive the lamp is to be operated, the current through the lamp after the Zünd bebruch the lamp to a maximum of 50 A, preferably to a maximum of 30 A. , limit.
  • FIG. 1 shows a first embodiment of a ballast according to the invention.
  • switches S 1 and S 2 which are mutually opened and closed.
  • Corresponding drive circuits are well known to the person skilled in the art. They are supplied by a supply voltage U 0 , which is also connected to two coupling capacitors C K1 and C K2 .
  • a lamp La is connected to a resonance ignition circuit having a resonance inductance L 1 and a resonance capacitance C 1 .
  • a brake inductance L B1 is provided, which is arranged in series with the lamp La, specifically between the lamp La and the resonant inductance L 1 .
  • the Brake inductance L B1 have the same energy carrying capacity as the resonance inductance L 1 used to generate the resonance voltage. As shown, the resonance inductance L 1 and the brake inductance L B1 are coupled in the same direction.
  • FIG. 1 shows a ballast according to the invention with a half-bridge arrangement
  • FIG. 2 an embodiment shown with a full bridge arrangement in which the coupling capacitors C K1 and C K2 are replaced by switches S 3 and S 4 .
  • a second brake inductance L B2 is provided, which is arranged in series with the resonance capacity. It is wound on the same core as the resonance inductance L 1 and the first brake inductance L B1 , in particular also in the same direction.
  • the air gap is arranged below the second brake inductance to produce a leakage inductance of sufficient magnitude.
  • the effective brake inductance is accordingly the stray inductance L stray resulting from the coupling of the first brake inductance L B1 with the second brake inductance L B2 .
  • L litter is at least 10 ⁇ H, preferably at least 40 ⁇ H.
  • the brake inductance (s) is / are to be interpreted such that the current through the lamp after ignition breakdown is limited to a maximum of 50 A, preferably to a maximum of 30 A.
  • FIG. 4 shows that in FIG. 3 illustrated ballast according to the invention in full bridge arrangement, the coupling capacitors C K1 and C K2 are replaced by switches S 3 and S 4 again.
  • the brake inductance LB1 which is connected in series with the lamp, is always connected between the lamp La and the resonance inductor L1.
  • the brake inductance LB1 which is connected in series with the lamp, is connected to the terminal of the lamp La, which is coupled to the resonance ignition circuit. This connection has a high voltage against a ground potential before ignition. If the lamp La is connected to the ballast via a longer cable, between the said terminal of the lamp La and the ground potential, a parasitic capacitance is formed which may have a value of several hundred picofarads.
  • the energy stored in the parasitic capacitance may unrestrainedly discharge via a protective earth or ground terminal. This discharge may cause the ballast to malfunction or be destroyed. In particular, because discharge currents flow via ground lines and thus reference potentials of the ballast are moved.
  • FIG. 5 Remedy against high discharge currents from parasitic capacitances provides an embodiment of a ballast according to the invention FIG. 5 , This embodiment corresponds essentially to the embodiment FIG. 3 , The difference to FIG. 3 is that now the lamp La is connected between the brake inductance LB1 and the resonance inductor L1. The brake inductance LB1 is thus connected to the lamp terminal designated by 12. This alternative arrangement of the brake inductance LB 1 causes discharge currents of parasitic capacitances to flow through the brake inductance LB1 and thus the value of these discharge currents is also reduced. Also, discharge currents of parasitic capacitances can in the embodiment according to FIG. 5 the ballast does not disturb or destroy.
  • FIG. 5 is an alternative arrangement of the brake inductance LB1 compared to the embodiment according to FIG. 3 shown. Accordingly, the embodiments of the FIGS. 1, 2 and 4 be carried out with the alternative arrangement of the brake inductance LB1. This is advantageous when parasitic capacitances to earth potential have large values. If a symmetrical wiring of the lamp La is desired, the Bremsindukttechnik LB 1 can also be divided and arranged on both sides of the lamp La.
EP05004716A 2004-04-02 2005-03-03 Vorschaltgerät für mindestens eine Lampe Not-in-force EP1583403B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004016389 2004-04-02
DE102004016389 2004-04-02
DE102004037382 2004-08-02
DE102004037382A DE102004037382A1 (de) 2004-04-02 2004-08-02 Vorschaltgerät für mindestens eine Lampe

Publications (2)

Publication Number Publication Date
EP1583403A1 EP1583403A1 (de) 2005-10-05
EP1583403B1 true EP1583403B1 (de) 2011-06-22

Family

ID=34888826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004716A Not-in-force EP1583403B1 (de) 2004-04-02 2005-03-03 Vorschaltgerät für mindestens eine Lampe

Country Status (9)

Country Link
US (1) US7129649B2 (ko)
EP (1) EP1583403B1 (ko)
JP (1) JP4843243B2 (ko)
KR (1) KR101145536B1 (ko)
CN (1) CN1678159B (ko)
AT (1) ATE514316T1 (ko)
CA (1) CA2502846A1 (ko)
DE (1) DE102004037382A1 (ko)
TW (1) TW200605734A (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101461289A (zh) * 2006-05-31 2009-06-17 皇家飞利浦电子股份有限公司 用于操作气体放电灯的方法和系统
EP2030487A1 (en) * 2006-05-31 2009-03-04 Koninklijke Philips Electronics N.V. Method and system for operating a gas discharge lamp
DE102009052702A1 (de) * 2009-11-11 2011-05-12 Osram Gesellschaft mit beschränkter Haftung Schaltungsanordnung zum Betreiben einer Entladungslampe
US10461651B2 (en) * 2017-12-05 2019-10-29 Abb Schweiz Ag Soft-switching power converters using air-core resonant inductor

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314077B1 (en) * 1987-10-27 1994-01-26 Matsushita Electric Works, Ltd. Discharge lamp driving circuit
JPH05121181A (ja) * 1991-10-28 1993-05-18 Matsushita Electric Ind Co Ltd 放電灯点灯装置
GB2356499B (en) * 1996-11-19 2001-07-11 Micro Tech Ltd Lamp driver circuit and method
US6124682A (en) * 1996-11-19 2000-09-26 Micro Tech Limited Lamp driver circuit using resonant circuit for starting lamp
DE69706397T2 (de) * 1997-01-27 2002-05-23 Magnetek Spa Versorgungsschaltung für Entladungslampen mit symmetrischer Resonanzschaltung
BR9913860A (pt) * 1998-09-18 2001-06-12 Knobel Lichttech Organização de circuito para operação de lâmpadas de descarga gasosa
US6653799B2 (en) 2000-10-06 2003-11-25 Koninklijke Philips Electronics N.V. System and method for employing pulse width modulation with a bridge frequency sweep to implement color mixing lamp drive scheme
US6680582B1 (en) 2000-10-06 2004-01-20 Koninklijke Philips Electronics N.V. System and method for employing pulse width modulation for reducing vertical segregation in a gas discharge lamp
DE10053803A1 (de) * 2000-10-30 2002-05-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Beleuchtungssystem mit schonender Vorheizung von Gasentladungslampen
US6459214B1 (en) * 2001-04-10 2002-10-01 General Electric Company High frequency/high power factor inverter circuit with combination cathode heating
JP2003142283A (ja) * 2001-10-31 2003-05-16 Matsushita Electric Works Ltd 放電灯用パルス発生回路、放電灯点灯装置および昇圧回路
WO2003039206A1 (en) * 2001-10-31 2003-05-08 Koninklijke Philips Electronics N.V. Ballasting circuit

Also Published As

Publication number Publication date
KR20060045452A (ko) 2006-05-17
CN1678159A (zh) 2005-10-05
CN1678159B (zh) 2010-08-18
US7129649B2 (en) 2006-10-31
EP1583403A1 (de) 2005-10-05
US20050218833A1 (en) 2005-10-06
CA2502846A1 (en) 2005-10-02
DE102004037382A1 (de) 2005-10-20
JP2005294268A (ja) 2005-10-20
ATE514316T1 (de) 2011-07-15
JP4843243B2 (ja) 2011-12-21
TW200605734A (en) 2006-02-01
KR101145536B1 (ko) 2012-05-15

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