EP0949851B1 - Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen - Google Patents

Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen Download PDF

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Publication number
EP0949851B1
EP0949851B1 EP99106712A EP99106712A EP0949851B1 EP 0949851 B1 EP0949851 B1 EP 0949851B1 EP 99106712 A EP99106712 A EP 99106712A EP 99106712 A EP99106712 A EP 99106712A EP 0949851 B1 EP0949851 B1 EP 0949851B1
Authority
EP
European Patent Office
Prior art keywords
circuit
capacitor
low
diode
circuit 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
EP99106712A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0949851A1 (de
Inventor
Anton Zuchtriegel
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 EP0949851A1 publication Critical patent/EP0949851A1/de
Application granted granted Critical
Publication of EP0949851B1 publication Critical patent/EP0949851B1/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
    • H05B41/26—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
    • H05B41/2881—Load circuits; Control thereof
    • 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
    • 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
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions

Definitions

  • the invention relates to a circuit arrangement for high-frequency operation a low wattage low pressure discharge lamp according to the preamble of claim 1.
  • ballasts for lamps larger than 25 W are required DC link capacitors with higher capacities.
  • these have result in a high harmonic content, so that active in these lamps Harmonic filter circuits in the form of complex pump circuits with capacitors and diodes required to meet the IEC regulations class C compliance.
  • Harmonic filter circuits in the form of complex pump circuits with capacitors and diodes required to meet the IEC regulations class C compliance are e.g. described in DE-OS 36 23 749.
  • These active circuits also have additional radio interference, which only requires a lot of components can be prevented.
  • the object of the invention is to provide a circuit arrangement for the operation of low wattage low pressure discharge lamps, i.e. less than or equal to 25 W. create that the mains current harmonic content among those in class D the IEC publications holds maximums.
  • the one needed for this Circuitry should be as small and inexpensive to implement his.
  • the task here was to further simplify the circuit arrangement create, which complies with the specified limits for harmonics and manages with even fewer components.
  • the harmonic filter circuit according to the invention consists of only one diode and only one capacitor in addition to the intermediate circuit capacitor ensures safe operation of the half-bridge generator at zero crossing the mains sine voltage.
  • the circuit does not work actively like that Pump circuits listed above, but passive, so that this only low radio interference and the expense of components for radio interference suppression can be kept small.
  • the circuit also comes with relatively low capacitance values in the DC link. Inexpensive film capacitors can therefore be used as the intermediate circuit capacitor be used.
  • Circuit for harmonic filtering results in a high power factor (Ratio of active power to apparent power) greater than or equal to 0.9.
  • the harmonic filter circuit consisting of a diode and. is a capacitor Can be realized inexpensively in a small space, as capacities as well Foil capacitors can be used, which also (opposite Electrolytic capacitors) higher "long-term temperature stability" exhibit.
  • the harmonic filter circuit also saves the Coupling capacitor in series to the resonance inductance in the series resonance circuit, because the capacitor of the harmonic filter circuit does the job of the coupling capacitor also takes over.
  • the block diagram in Figure 1 gives the basic structure of an inventive Circuit arrangement for a low wattage low pressure discharge lamp LP again.
  • the circuit arrangement includes a radio interference filter 1, a line rectifier 2 and a half-bridge generator 3 with Control circuit and resonance choke. Between the center tap of the two transistors of the half-bridge generator 3 and the positive pole of the Mains rectifier 2, the low-pressure discharge lamp LP is switched, wherein the preheating circuit 4 is placed parallel to the lamp LP.
  • the circuit arrangement additionally has a harmonic filter circuit 5, whereby in the connection of the positive pole of the mains rectifier 2 with the second electrode E2 of the low-pressure discharge lamp LP a diode D1 connected in series and in the DC blocking direction are.
  • tap M2 is between diode D1 and the second Electrode E2 via a capacitor C1 with the negative pole of the mains rectifier 2 connected.
  • a resistor R9 is also parallel to the diode D1 switched.
  • the intermediate circuit capacitor C2 is in this block diagram connected in parallel to the DC output of the mains rectifier.
  • FIG. 2 shows a possible variant of the block diagram as shown in FIG. 1 is shown.
  • the negative pole of the rectifier 2 via a diode D1 in the direct current blocking direction (related to the positive pole) with the second Electrode E2 of the lamp LP connected.
  • the tap M2 between the diode D1 and the second electrode E2 is connected to the capacitor C1 Positive pole of the mains rectifier 2 connected. Is parallel to the diode D1 too here a resistor R9 switched.
  • the variant in FIG. 3 essentially corresponds to the block diagram in FIG Figure 1.
  • the intermediate circuit capacitor C2 is not parallel to DC output of the mains rectifier 2 but parallel to the diode D1 switched.
  • FIG 4 shows the exact circuit diagram of the circuit arrangement according to the invention with harmonic filter circuit for operating a low-pressure discharge lamp LP according to the block diagram in Figure 1.
  • a filter choke FD1, FD2 Directly to the Mains input is a filter choke FD1, FD2 and parallel in each supply line A resistor R1 is connected to the filter choke FD1.
  • This high frequency filter follows the line rectifier with diodes D3 to D6.
  • the self-steering Half-bridge circuit consists of the two transistors T1, T2, the series resistors R3 to R6, the control transformer and the starting generator with the resistors R2, R7, the starting capacitor C4, the diode D7 as well as the Diac DC.
  • the control transmitter works on the feedback principle and consists of the primary winding RKA and the two Secondary windings RKB and RKC together.
  • the lamp LP is with a Connection of the electrode E1 with the center tap M1 between the two Transistors T1, T2 and with a connection of the other electrode E2 connected to the positive pole of the mains rectifier.
  • the capacitor C5 parallel to the switching path of the transistor T1 is used for radio interference suppression (trapezoidal capacitor).
  • a PTC thermistor R8 is connected in parallel with the resonance capacitor C6, to improve preheating.
  • the additional harmonic filter circuit consists of the diode D1, which in Row and in the DC blocking direction between the positive pole of the mains rectifier and the corresponding connection of the electrode E2 of the low-pressure discharge lamp LP are switched.
  • the tap M2 between the Diode D1 and electrode E2 is connected to the negative pole via a capacitor C1 connected to the mains rectifier. It is also parallel to the diode D1 a resistor R9 switched.
  • the capacitor C1 is charged via the lamp circuit.
  • the charge of the support capacitor C1 is connected to the DC link via the diode D1 conducted and now ensures together with the charge of the intermediate circuit capacitor C2 that even with zero crossing of the AC mains voltage there is a sufficiently high supply voltage for the Keep half-bridge circuit in operation.
  • the capacitor C1 acts at the same time So coupling capacitor, so that on its own coupling capacitor can be dispensed with.
  • the resistor R9 stabilized in parallel to the diode D1 the vibration behavior of the half-bridge circuit.
  • the circuit list below shows the circuit elements used for a circuit arrangement according to FIG. 4 for operating an 8 W fluorescent lamp LP on 230 V AC voltage: FD1, FD2 1.5 mH, BC D3 - D6 Rectifier bridge circuit B250 C800 D1, D7 1N4005 C1 1 ⁇ F C2 0.22 ⁇ F C4 0.1 ⁇ F C5 1.5 nF C6 4.7 nF DC Diac 1N413M R1 10 k ⁇ R2, R7 820 k ⁇ R3, R4 22 ⁇ R5, R6 1 ⁇ R8 PTC thermistor PIC-C1380 R9 270 k ⁇ RKA 9 turns RKB, RKC 3 turns L1 2.4 mH, EF16 T1, T2 BUD620

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP99106712A 1998-04-07 1999-04-01 Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen Expired - Lifetime EP0949851B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19815623A DE19815623A1 (de) 1998-04-07 1998-04-07 Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
DE19815623 1998-04-07

Publications (2)

Publication Number Publication Date
EP0949851A1 EP0949851A1 (de) 1999-10-13
EP0949851B1 true EP0949851B1 (de) 2001-10-17

Family

ID=7863906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106712A Expired - Lifetime EP0949851B1 (de) 1998-04-07 1999-04-01 Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen

Country Status (7)

Country Link
US (1) US6104142A (ko)
EP (1) EP0949851B1 (ko)
KR (1) KR100607394B1 (ko)
CA (1) CA2267918C (ko)
DE (2) DE19815623A1 (ko)
ES (1) ES2166203T3 (ko)
TW (1) TW461229B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6356034B1 (en) * 2000-03-22 2002-03-12 Regal King Manufacturing Limited Low voltage discharge lamp power supply
DE10160790A1 (de) * 2001-01-12 2002-08-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Einschalten einer Teilschaltungsanordnung
US10360043B2 (en) * 2015-07-20 2019-07-23 Dell Products, Lp Installation of device drivers from virtual media
CN110098631A (zh) * 2018-01-31 2019-08-06 新疆金风科技股份有限公司 直流输电***及其卸荷电路和卸荷方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675576A (en) * 1985-04-05 1987-06-23 Nilssen Ole K High-reliability high-efficiency electronic ballast
DE3623749A1 (de) * 1986-07-14 1988-01-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb von niederdruckentladungslampen
WO1991002400A1 (en) * 1989-08-04 1991-02-21 Courier De Mere Henri Edouard Feeding device for converters, free of harmonic distortion
WO1991016802A1 (en) * 1990-04-26 1991-10-31 Smallwood Robert C Electronic lamp ballast for gas discharge lamp
DE4140557A1 (de) * 1991-12-09 1993-06-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb einer oder mehrerer niederdruckentladungslampen
DE4238409A1 (de) * 1992-11-13 1994-05-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
DE4430397A1 (de) * 1994-08-26 1996-02-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
US5574336A (en) * 1995-03-28 1996-11-12 Motorola, Inc. Flourescent lamp circuit employing a reset transistor coupled to a start-up circuit that in turn controls a control circuit
US5898278A (en) * 1995-08-09 1999-04-27 Pinbeam Ag Series resonant lamp circuit having direct electrode connection between rectifier and AC source
US5801492A (en) * 1996-05-30 1998-09-01 Bobel; Andrzej Electronic ballast for gas discharge lamp having primary and auxiliary resonant circuits
US5994847A (en) * 1997-01-31 1999-11-30 Motorola Inc. Electronic ballast with lamp current valley-fill power factor correction

Also Published As

Publication number Publication date
CA2267918A1 (en) 1999-10-07
KR100607394B1 (ko) 2006-08-02
ES2166203T3 (es) 2002-04-01
US6104142A (en) 2000-08-15
TW461229B (en) 2001-10-21
DE59900311D1 (de) 2001-11-22
KR19990082734A (ko) 1999-11-25
DE19815623A1 (de) 1999-10-14
EP0949851A1 (de) 1999-10-13
CA2267918C (en) 2005-11-22

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