CN202068325U - High power factor valley fill circuit - Google Patents
High power factor valley fill circuit Download PDFInfo
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- CN202068325U CN202068325U CN2011201787567U CN201120178756U CN202068325U CN 202068325 U CN202068325 U CN 202068325U CN 2011201787567 U CN2011201787567 U CN 2011201787567U CN 201120178756 U CN201120178756 U CN 201120178756U CN 202068325 U CN202068325 U CN 202068325U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model relates to a high power factor valley fill circuit, which comprises a diode D1, a diode D2, a diode D3, an electrolytic capacitor C1, an electrolytic capacitor C2 and an electrolytic capacitor C3. A series circuit of the electrolytic capacitor C1 and the diode D1, a series circuit of the electrolytic capacitor C2 and the diode D3 and the electrolytic capacitor C3 are parallelly connected with an output end of a rectifying circuit, a positive electrode of the diode D2 is connected with a negative electrode of the diode D1, a negative electrode of the diode D2 is connected with a positive electrode of the diode D3, a positive electrode of the electrolytic capacitor C1 and a positive electrode of the diode D1 form an input end of the high power factor valley fill circuit, a positive electrode and a negative electrode of the electrolytic capacitor C3 form an output end of the high power factor valley fill circuit, and the output end of the high power factor valley fill circuit is connected with a subsequent constant-current constant-voltage control circuit and a loaded circuit. By the aid of the high power factor valley fill circuit, conduction angle of a rectifying diode can be enlarged, alternating-current distortion can be reduced, power factor is effectively increased, affection on the power grid is reduced, and damage to load is reduced as well.
Description
Technical field
The utility model relates to field of illumination lamp technology, relates in particular to the High Power Factor that a kind ofly improves power factor, prolongs light fixture useful life and fills out the paddy circuit, is applicable to common fluorescent lamp and LED fluorescent lamp.
Background technology
AC/DC converter on the general fluorescent lamp all is connected with electrical network by rectification circuit.The importation generally is made of bridge rectifier and filter capacitor, and the two all belongs to non-linear element.Because the existence of big capacity filter capacitor, make the angle of flow of rectifier diode become very narrow, near the only ability conducting peak value of AC-input voltage causes exchanging input current to produce serious distortion, becomes to be spike, comprised a large amount of harmonic components in this current waveform, not only electrical network is impacted, the active power that also causes exporting after the filtering significantly reduces, and power factor is reduced significantly, also make simultaneously fluorescent tube, LED lamp pearl impaired easily, the useful life of light fixture is shorter.
Summary of the invention
The utility model mainly solves original filling out the paddy circuit and can make and exchange input current and produce serious distortion on the fluorescent lamp that be installed to, not only electrical network is impacted, the active power that also causes exporting after the filtering significantly reduces, power factor is reduced significantly, also make fluorescent tube, LED lamp pearl impaired technical problem easily simultaneously; Provide a kind of High Power Factor to fill out the paddy circuit, the angle of flow that it can increase rectifier diode makes to exchange input current reduction distortion, effectively improves power factor, not only reduces the influence to electrical network, and prolongs the useful life of fluorescent tube, LED lamp pearl.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: input of the present utility model links to each other with rectification circuit, output of the present utility model links to each other with constant-current and constant-voltage control circuit and load circuit, the utility model comprises diode D1, diode D2, diode D3 and electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C1 and diode D1 are in series, and the negative pole of electrochemical capacitor C1 links to each other with the negative pole of diode D1, electrochemical capacitor C2 and diode D3 are in series, and the positive pole of electrochemical capacitor C2 links to each other with the positive pole of diode D3, the forward output of the negative pole of the positive pole of electrochemical capacitor C1 and diode D3 and described rectification circuit links to each other, the negative sense output of the negative pole of the positive pole of diode D1 and electrochemical capacitor C2 and described rectification circuit links to each other, the positive pole of diode D2 links to each other with the negative pole of diode D1, the negative pole of diode D2 links to each other with the positive pole of diode D3, and the negative pole of the negative pole of diode D3 and electrochemical capacitor C2 links to each other with described constant-current and constant-voltage control circuit and load circuit.Increase the angle of flow of rectifier diode by diode D1, diode D2, diode D3 and electrochemical capacitor C1, electrochemical capacitor C2 part filtering passive power factor correcting circuit, the electric current input becomes the waveform that approaches sine wave by filling and leading up the valley point from spike, power factor is brought up to about 0.9, made harmonic wave reduce distortion.
As preferably, be parallel with electrochemical capacitor C3 on the series circuit of described diode D3 and electrochemical capacitor C2, the positive pole of electrochemical capacitor C3 links to each other with the negative pole of diode D3, and the negative pole of electrochemical capacitor C3 links to each other with the negative pole of electrochemical capacitor C2.Filling out the very little electrochemical capacitor C3 of paddy circuit output end increase as level and smooth storage capacitor, cooperate to let out and send out diode and be used for the high-frequency harmonic composition in the unidirectional pulsating voltage after the filtering rectification, shorten Dead Time, make output current wave be tending towards continuous, further improve output waveform distortions, make power factor finally reach more than 0.9, further improve power factor.Not only reduce influence, and prolong the useful life of fluorescent tube, LED lamp pearl electrical network.
The beneficial effects of the utility model are: the angle of flow that can increase rectifier diode, make and exchange input current reduction distortion, active power significantly increases, effectively improve power factor, not only reduce influence to electrical network, and reduce infringement to fluorescent lamp, effectively prolong the useful life of fluorescent tube, LED lamp pearl.
Description of drawings
Fig. 1 is a kind of circuit connection diagram of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the High Power Factor of present embodiment is filled out the paddy circuit, as shown in Figure 1, comprises diode D1, diode D2, diode D3 and electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3.Electrochemical capacitor C1 and diode D1 are in series, and the negative pole of the negative pole of electrochemical capacitor C1 and diode D1 links to each other.Electrochemical capacitor C2 and diode D3 are in series, and the positive pole of the positive pole of electrochemical capacitor C2 and diode D3 links to each other.The positive pole of the positive pole of electrochemical capacitor C1 and diode D1 constitutes the input that High Power Factor is filled out the paddy circuit, and this input links to each other with the output of rectification circuit 1.The forward output of the negative pole of the positive pole of electrochemical capacitor C1 and diode D3 and rectification circuit 1 links to each other, and the negative pole of the positive pole of diode D1 and electrochemical capacitor C2 links to each other with the negative sense output of rectification circuit 1.The civil power input links to each other with the input of rectification circuit 1, also can adopt civil power to link to each other through overcurrent protective circuit, anti-surge circuit, filter circuit and the input of rectification circuit 1.The positive pole of diode D2 links to each other with the negative pole of diode D1, and the negative pole of diode D2 links to each other with the positive pole of diode D3.The series circuit that diode D3 and electrochemical capacitor C2 are linked to be is in parallel with electrochemical capacitor C3, and the positive pole of electrochemical capacitor C3 links to each other with the negative pole of diode D3, and the negative pole of electrochemical capacitor C3 links to each other with the negative pole of electrochemical capacitor C2.The positive and negative electrode of electrochemical capacitor C3 constitutes the output that High Power Factor is filled out the paddy circuit, and this output links to each other with constant-current and constant-voltage control circuit and load circuit 2 on the fluorescent lamp ballast.
The utility model increases the angle of flow of rectifier diode by diode D1, diode D2, diode D3 and electrochemical capacitor C1, electrochemical capacitor C2 part filtering passive power factor correcting circuit, the electric current input becomes the waveform that approaches sine wave by filling and leading up the valley point from spike, power factor is brought up to about 0.9, make harmonic wave reduce distortion, but the output current harmonics distortion is still relatively more serious, and the lamp current wave honeybee is than higher.At this moment, at the very little level and smooth storage capacitor of electrochemical capacitor C3 conduct of output increase, cooperate to let out and send out diode and be used for the high-frequency harmonic composition in the unidirectional pulsating voltage after the filtering rectification, shorten Dead Time, make output current wave be tending towards continuous, further improve the output waveform distortion, power factor finally reaches more than 0.9.Active power significantly increases, and power factor has had and significantly improves, and not only reduces the influence to electrical network, and reduces the infringement to fluorescent lamp and LED lamp pearl, effectively prolongs the useful life of fluorescent tube, LED lamp pearl, reaches high power purpose cheaply.
Claims (2)
1. a High Power Factor is filled out the paddy circuit, its input links to each other with rectification circuit (1), its output links to each other with constant-current and constant-voltage control circuit and load circuit (2), it is characterized in that comprising diode D1, diode D2, diode D3 and electrochemical capacitor C1, electrochemical capacitor C2, electrochemical capacitor C1 and diode D1 are in series, and the negative pole of electrochemical capacitor C1 links to each other with the negative pole of diode D1, electrochemical capacitor C2 and diode D3 are in series, and the positive pole of electrochemical capacitor C2 links to each other with the positive pole of diode D3, the negative pole of the positive pole of electrochemical capacitor C1 and diode D3 links to each other with the forward output of described rectification circuit (1), the negative pole of the positive pole of diode D1 and electrochemical capacitor C2 links to each other with the negative sense output of described rectification circuit (1), the positive pole of diode D2 links to each other with the negative pole of diode D1, the negative pole of diode D2 links to each other with the positive pole of diode D3, and the negative pole of the negative pole of diode D3 and electrochemical capacitor C2 links to each other with described constant-current and constant-voltage control circuit and load circuit (2).
2. High Power Factor according to claim 1 is filled out the paddy circuit, it is characterized in that being parallel with electrochemical capacitor C3 on the series circuit of described diode D3 and electrochemical capacitor C2, the positive pole of electrochemical capacitor C3 links to each other with the negative pole of diode D3, and the negative pole of electrochemical capacitor C3 links to each other with the negative pole of electrochemical capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201787567U CN202068325U (en) | 2011-05-31 | 2011-05-31 | High power factor valley fill circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201787567U CN202068325U (en) | 2011-05-31 | 2011-05-31 | High power factor valley fill circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202068325U true CN202068325U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201787567U Expired - Fee Related CN202068325U (en) | 2011-05-31 | 2011-05-31 | High power factor valley fill circuit |
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| CN (1) | CN202068325U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312144A (en) * | 2013-07-03 | 2013-09-18 | 上海路千电子科技有限公司 | Active-control valley fill circuit and control method thereof |
| CN104079188A (en) * | 2014-06-18 | 2014-10-01 | 广州金升阳科技有限公司 | Flyback switching power circuit |
| CN104981065A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | LED drive device with valley fill circuit |
| CN104079188B (en) * | 2014-06-18 | 2016-11-30 | 广州金升阳科技有限公司 | A kind of inverse-excitation type switch power-supply circuit |
| CN106385725A (en) * | 2016-08-18 | 2017-02-08 | 黄鹂 | Low-power LED bulb lamp capable of adjusting light automatically in timing manner |
| CN109510452A (en) * | 2018-11-19 | 2019-03-22 | 廖济贤 | The passive power factor correcting circuit of LED illumination power supply |
-
2011
- 2011-05-31 CN CN2011201787567U patent/CN202068325U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312144A (en) * | 2013-07-03 | 2013-09-18 | 上海路千电子科技有限公司 | Active-control valley fill circuit and control method thereof |
| CN104079188A (en) * | 2014-06-18 | 2014-10-01 | 广州金升阳科技有限公司 | Flyback switching power circuit |
| CN104079188B (en) * | 2014-06-18 | 2016-11-30 | 广州金升阳科技有限公司 | A kind of inverse-excitation type switch power-supply circuit |
| CN104981065A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | LED drive device with valley fill circuit |
| CN106385725A (en) * | 2016-08-18 | 2017-02-08 | 黄鹂 | Low-power LED bulb lamp capable of adjusting light automatically in timing manner |
| CN109510452A (en) * | 2018-11-19 | 2019-03-22 | 廖济贤 | The passive power factor correcting circuit of LED illumination power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20160531 |