EP0949851B1 - Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen - Google Patents
Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen Download PDFInfo
- 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
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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)
Description
- Figur 1
- zeigt das Blockschaltbild einer Schaltungsanordnung mit Oberwellenfilter für eine niederwattige Niederdruckentladungslampe
- Figur 2
- zeigt eine Variante für das Blockschaltbild einer Schaltungsanordnung gemäß Figur 1
- Figur 3
- zeigt eine weitere Variante für das Blockschaltbild einer Schaltungsanordnung gemäß Figur 1
- Figur 4
- zeigt das detaillierte Schaltbild einer Schaltungsanordnung gemäß Figur 1
FD1, FD2 | 1,5 mH, BC |
D3 - D6 | Gleichrichter-Brückenschaltung B250 C800 |
D1, D7 | 1N4005 |
C1 | 1 µF |
C2 | 0,22 µF |
C4 | 0,1 µF |
C5 | 1,5 nF |
C6 | 4,7 nF |
DC | Diac 1N413M |
R1 | 10 kΩ |
R2, R7 | 820 kΩ |
R3, R4 | 22 Ω |
R5, R6 | 1 Ω |
R8 | Kaltleiter PIC-C1380 |
R9 | 270 kΩ |
RKA | 9 Windungen |
RKB, RKC | 3 Windungen |
L1 | 2,4 mH, EF16 |
T1, T2 | BUD620 |
Claims (4)
- Schaltungsanordnung zum hochfrequenten Betrieb einer niederwattigen Niederdruckentladungslampe (LP) an einer Wechselspannungsquelle, wobei die Schaltungsanordnung folgende Merkmale aufweist:einen Netzgleichrichter (2) mit nachgeschaltetem Zwischenkreiskondensator (C2)eine an den Gleichstromausgang des Netzgleichrichters (2) angeschlossene Halbbrückenschaltung mit zwei alternierend schaltenden Transistoren (T1, T2) und einer Ansteuerschaltung, wobei ein Mittenabgriff (M1) zwischen den beiden Transistoren (T1, T2) vorgesehen isteinen der Niederdruckentladungslampe (LP) zugeordneten Serienresonanzkreis, bestehend aus einer Resonanzinduktivität (L1) und einer Resonanzkapazität (C6)Anschlußleitungen für die Niederdruckentladungslampe (LP), wobei eine Leitung die erste Elektrode (E1) der Lampe (LP) über die Resonanzinduktivität (L1) mit dem Mittenabgriff (M1) zwischen den beiden Transistoren (T1, T2) und jeweils eine weitere Leitung die zweite Elektrode (E2) der Lampe (LP) mit dem Plus- oder Minuspol des Netzgleichrichters (2) verbindetin die Anschlußleitung der zweiten Elektrode (E2) der Lampe (LP) mit dem Plus- oder Minuspol des Netzgleichrichters (2) eine Diode (D1) in Reihe und in Gleichstromsperrichtung geschaltet ist und der Abgriff (M2) zwischen der Diode (D1) und der zweiten Elektrode (E2) über einen Kondensator (C1) mit dem anderen Pol des Netzgleichrichters (2) verbunden ist.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß parallel zur Diode (D1) ein Widerstand (R9) geschaltet ist.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Zwischenkreiskondensator (C2) parallel zum Gleichstromausgang des Netzgleichrichters (2) geschaltet ist.
- Schaltungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Zwischenkreiskondensator (C2) parallel zur Diode (D1) geschaltet ist.
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 (de) |
EP (1) | EP0949851B1 (de) |
KR (1) | KR100607394B1 (de) |
CA (1) | CA2267918C (de) |
DE (2) | DE19815623A1 (de) |
ES (1) | ES2166203T3 (de) |
TW (1) | TW461229B (de) |
Families Citing this family (4)
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 |
CN110098631B (zh) * | 2018-01-31 | 2024-08-13 | 金风科技股份有限公司 | 直流输电系统及其卸荷电路和卸荷方法 |
Family Cites Families (11)
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 |
CA2037927A1 (en) * | 1989-08-04 | 1991-02-05 | Henri E. F. M. Courier De Mere | 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 |
-
1998
- 1998-04-07 DE DE19815623A patent/DE19815623A1/de not_active Withdrawn
-
1999
- 1999-03-15 KR KR1019990008562A patent/KR100607394B1/ko not_active IP Right Cessation
- 1999-03-26 TW TW088104823A patent/TW461229B/zh not_active IP Right Cessation
- 1999-04-01 DE DE59900311T patent/DE59900311D1/de not_active Expired - Lifetime
- 1999-04-01 ES ES99106712T patent/ES2166203T3/es not_active Expired - Lifetime
- 1999-04-01 EP EP99106712A patent/EP0949851B1/de not_active Expired - Lifetime
- 1999-04-02 US US09/285,540 patent/US6104142A/en not_active Expired - Lifetime
- 1999-04-06 CA CA002267918A patent/CA2267918C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR100607394B1 (ko) | 2006-08-02 |
DE19815623A1 (de) | 1999-10-14 |
ES2166203T3 (es) | 2002-04-01 |
KR19990082734A (ko) | 1999-11-25 |
TW461229B (en) | 2001-10-21 |
CA2267918A1 (en) | 1999-10-07 |
EP0949851A1 (de) | 1999-10-13 |
DE59900311D1 (de) | 2001-11-22 |
US6104142A (en) | 2000-08-15 |
CA2267918C (en) | 2005-11-22 |
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