KR970064323A - High power factor electronic ballast for discharge lamps - Google Patents
High power factor electronic ballast for discharge lamps Download PDFInfo
- Publication number
- KR970064323A KR970064323A KR1019960003318A KR19960003318A KR970064323A KR 970064323 A KR970064323 A KR 970064323A KR 1019960003318 A KR1019960003318 A KR 1019960003318A KR 19960003318 A KR19960003318 A KR 19960003318A KR 970064323 A KR970064323 A KR 970064323A
- Authority
- KR
- South Korea
- Prior art keywords
- terminal
- voltage
- power factor
- rectifying circuit
- circuit
- Prior art date
Links
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Rectifiers (AREA)
Abstract
방전등용 전자식 안정기에 있어서, 단순화 회로 구성으로도 고역률을 얻을 수 있는 수동형 역률 개선 회로 및 거의 1에 가까운 고역률을 얻을 수 있는 복합형 역률 제어 회로가 제공된다. 본 발명의 원리에 따르면, 교류 전원으로부터의 전압을 전파 정류(全波 整流)하기 위한 정류 회로(A), 방전등을 구동시키기 위한 공진기, 상기 정류 회로와 상기 공진기에 연결되는 충전 수단 (C1, C2), 상기 정류 회로에 의하여 정류된 전압이 규정된 값 이상일 때에는 상기 공진기로부터 전류를 공급받아 상기 충전 수단을 충전시키기 위한 역률 제어 회로(P)를 포함하는 방전등용 전자식 안정기가 제공된다. 본 발명의 다른 원리에 따르면, 정류 회로에 의하여 정류된 전압(Bv)가 충전 수단(C1, C2)에 인가된 전압 이하일 때 동작하여 역률을 증가 시킴으로서 입력 전류를 상기 정류 회로에 의하여 정류된 전압과 같은 파형으로 만드는 능동형 역률 제어 수단이 제공된다. 본 발명의 역률 개선 회로는 저가의 간단한 구성으로도 거의 1에 가까운 고역률을 얻을 수 있을 뿐 아니라, 깜박임 등 방전등의 특성이 저하되는 문제점을 제거하였다는 장점을 지닌다.In an electronic ballast for a discharge lamp, a passive power factor improving circuit capable of obtaining a high power factor even in a simplified circuit configuration and a hybrid power factor control circuit capable of obtaining a high power factor close to one are provided. According to the principle of the present invention, there is provided a rectifying circuit (A) for full-wave rectification of a voltage from an AC power source, a resonator for driving a discharge lamp, charging means (C1, C2 And a power factor control circuit (P) for supplying a current from the resonator to charge the charging means when the voltage rectified by the rectifying circuit is equal to or greater than a prescribed value. According to another aspect of the present invention, when the voltage (Bv) rectified by the rectifying circuit is equal to or lower than the voltage applied to the charging means (C1, C2), the power factor is increased to increase the input current by the rectified voltage An active power factor control means for producing the same waveform is provided. The power factor correction circuit of the present invention has advantages of not only obtaining a high power factor close to 1 even with a simple and inexpensive configuration but also eliminating the problem of deterioration of characteristics of a discharge lamp such as flicker.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제1도는 본 발명에 따른 역률 개선 회로를 도시한 도면.FIG. 1 is a circuit diagram of a power factor correction circuit according to the present invention. FIG.
제1a도는 본 발명에 따른 역률 개선 회로의 개념적인 회로도.Figure 1a is a schematic circuit diagram of a power factor correction circuit according to the present invention;
제1b도는 제1a도에 도시된 역률 개선 회로에 의하여 나타나는 직류 전압.Figure 1b shows the DC voltage exhibited by the power factor correction circuit shown in Figure 1a.
제3도는 본 발명에 따른 능동형 역률 개선 회로를 도시하는 도면.FIG. 3 is a diagram showing an active power factor improving circuit according to the present invention; FIG.
제3a도는 본 발명에 따른 능동형 역률 개선 회로를 포함하는 전자식 안정기의 개념적인 회로도.FIG. 3a is a conceptual circuit diagram of an electronic ballast including an active power factor correction circuit according to the present invention.
제3b도는 제3a도의 역률 개선 회로에 따른 전파 정류 전압과 입력 전류의 파형을 도시한 그래프.3b is a graph showing the waveforms of the full-wave rectified voltage and the input current according to the power factor correction circuit of Fig. 3a.
제3c도는 본 발명에 따른 능동형 역률 개선 회로의 제어 회로에 대한 개략적인 회로도.Figure 3c is a schematic circuit diagram of the control circuit of the active power factor correction circuit according to the present invention;
제4도는 본 발명에 따른 역률 개선 회로와 공진형 인버터와의 접속점을 도시한 도면.FIG. 4 is a view showing a connection point between a power factor improving circuit and a resonant inverter according to the present invention; FIG.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960003318A KR0185249B1 (en) | 1996-02-12 | 1996-02-12 | An electronic ballast for discharge lamp with high power factor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960003318A KR0185249B1 (en) | 1996-02-12 | 1996-02-12 | An electronic ballast for discharge lamp with high power factor |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970064323A true KR970064323A (en) | 1997-09-12 |
KR0185249B1 KR0185249B1 (en) | 1999-05-15 |
Family
ID=19451084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960003318A KR0185249B1 (en) | 1996-02-12 | 1996-02-12 | An electronic ballast for discharge lamp with high power factor |
Country Status (1)
Country | Link |
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KR (1) | KR0185249B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100335990B1 (en) * | 1999-08-27 | 2002-05-10 | 윤덕용 | Power factor correction circuit of electronic ballast for fluorescent lamp |
KR20030050545A (en) * | 2001-12-19 | 2003-06-25 | 김동희 | Circuit of power factor correction |
-
1996
- 1996-02-12 KR KR1019960003318A patent/KR0185249B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100335990B1 (en) * | 1999-08-27 | 2002-05-10 | 윤덕용 | Power factor correction circuit of electronic ballast for fluorescent lamp |
KR20030050545A (en) * | 2001-12-19 | 2003-06-25 | 김동희 | Circuit of power factor correction |
Also Published As
Publication number | Publication date |
---|---|
KR0185249B1 (en) | 1999-05-15 |
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