CN101738526A - Direct current output voltage test circuit for power factor correction control circuit - Google Patents
Direct current output voltage test circuit for power factor correction control circuit Download PDFInfo
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- CN101738526A CN101738526A CN200810203184A CN200810203184A CN101738526A CN 101738526 A CN101738526 A CN 101738526A CN 200810203184 A CN200810203184 A CN 200810203184A CN 200810203184 A CN200810203184 A CN 200810203184A CN 101738526 A CN101738526 A CN 101738526A
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- 238000012937 correction Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 title claims description 12
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
本发明公开了一种用于功率因数校正控制电路的直流输出电压检测电路，所述的功率因数校正控制电路包括有一中央处理器，本发明包括一电压互感器T，该电压传感器T的输出回路上依次连接有二极管D1、第二电阻R2、比较器D、第五电阻R5以及光耦，光耦的一输出端上连接有第六电阻R6和第七电阻R7，第七电阻R7通过一第二电容C2与光耦的另一输出端相连并接地，第二电容C2的与第七电阻R7相连的一端与所述的中央处理器相连，还包括第一电阻R1、第一电容C1、第三电阻R3和第四电阻R4。本发明的用于部分斩波型功率因数校正控制电路的直流输出电压检测电路，它具有结构简单的优点，可检测出直流输出电压值。
The invention discloses a DC output voltage detection circuit used in a power factor correction control circuit. The power factor correction control circuit includes a central processing unit. The invention includes a voltage transformer T, and the output circuit of the voltage sensor T A diode D1, a second resistor R2, a comparator D, a fifth resistor R5 and an optocoupler are connected in sequence, and an output terminal of the optocoupler is connected with a sixth resistor R6 and a seventh resistor R7, and the seventh resistor R7 passes through a first The second capacitor C2 is connected to the other output terminal of the optocoupler and grounded, and one end of the second capacitor C2 connected to the seventh resistor R7 is connected to the central processing unit, and also includes a first resistor R1, a first capacitor C1, and a second capacitor C1. Three resistors R3 and a fourth resistor R4. The DC output voltage detection circuit used in the partial chopper type power factor correction control circuit of the present invention has the advantage of simple structure and can detect the DC output voltage value.
Description
Technical field
The present invention relates to a kind of voltage detecting circuit, relate in particular to a kind of VD testing circuit that is used for part chopper-type power factor correction control circuit.
Technical background
In recent years, along with development of electronic technology, various electronic equipments, issuable current harmonics of household electrical appliance and reactive power also more and more cause people's attention to the pollution of electrical network, the existence of harmonic wave, not only greatly reduce the power factor of input circuit, and can pollute the detonator circuit fault the public power system.At present, in order effectively to improve power factor, reduction is to the requirement of components and parts and the loss of the components and parts that take effect, can adopt the chopping way of part copped wave in each voltage cycle to control, this part chopper-type power factor correction control circuit must adopt a kind of simple VD testing circuit, therefore, the application's applicant is devoted to study a kind of VD testing circuit that simply is applicable to part chopper-type power factor correction control circuit.
Summary of the invention
The object of the present invention is to provide a kind of VD testing circuit that is used for part chopper-type power factor correction control circuit, it has advantage of simple structure, can detect the VD value.
The technical scheme that realizes above-mentioned purpose is: a kind of VD testing circuit that is used for power factor correction control circuit, described power factor correction control circuit includes a central processing unit, wherein, it comprises a voltage transformer (VT) T, be connected with diode D1 in turn on the output loop of this voltage sensor T, second resistance R 2, comparer D, the 5th resistance R 5 and optocoupler, be connected with the 6th resistance R 6 and the 7th resistance R 7 on one output terminal of optocoupler, the 7th resistance R 7 links to each other with another output terminal of optocoupler and ground connection by one second capacitor C 2, an end that links to each other with the 7th resistance R 7 of second capacitor C 2 links to each other with described central processing unit, also comprise first resistance R 1, first capacitor C 1, the 3rd resistance R 3 and the 4th resistance R 4, wherein:
One end of described first resistance R 1 links to each other with the output terminal of described diode D1, and the other end links to each other with the output terminal of described voltage transformer (VT) T and ground connection;
One end of described first capacitor C 1 links to each other with described comparer D, and the other end links to each other with the output terminal of described voltage transformer (VT) T;
One end of described the 4th resistance R 4 links to each other with the output terminal of described comparer D, and the other end links to each other with the output terminal of described voltage transformer (VT) T;
One end of described the 3rd resistance R 3 links to each other another termination power with the output terminal of described comparer D.
The above-mentioned VD testing circuit that is used for power factor correction control circuit wherein, connects the power supply of 5V on described the 6th resistance R 6, connect the power supply of 15V on described the 3rd resistance R 3.
The invention has the beneficial effects as follows: the present invention compares the alternating voltage half-wave voltage signal of taking-up and the voltage division signal of output dc voltage by comparer, handle by central processing unit, can obtain the interchange and the dc voltage value of required measurement, this circuit has advantage simple in structure, practical.
Description of drawings
Fig. 1 is the circuit diagram of VD testing circuit of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, there is shown a kind of alternating current input voltage magnitude testing circuit that is used for power factor correction control circuit of the present invention, power factor correction control circuit includes a central processing unit 2, the present invention includes a voltage transformer (VT) T, be connected with diode D1 in turn on the output loop of this voltage sensor T, second resistance R 2, comparer D, the 5th resistance R 5 and optocoupler 1, be connected with the 6th resistance R 6 and the 7th resistance R 7 on one output terminal of optocoupler 1, the 7th resistance R 7 links to each other with another output terminal of optocoupler 1 and ground connection by one second capacitor C 2, an end that links to each other with the 7th resistance R 7 of second capacitor C 2 links to each other with central processing unit 2, also comprise first resistance R 1, first capacitor C 1, the 3rd resistance R 3 and the 4th resistance R 4, wherein:
One end of first resistance R 1 links to each other with the output terminal of diode D1, and the other end links to each other with the output terminal of voltage transformer (VT) T and ground connection;
One end of first capacitor C 1 links to each other with comparer D, and the other end links to each other with the output terminal of voltage transformer (VT) T;
One end of the 4th resistance R 4 links to each other with the output terminal of comparer D, and the other end links to each other with the output terminal of voltage transformer (VT) T;
One end of the 3rd resistance R 3 links to each other with the output terminal of comparer D, the power supply of another termination 15V;
Connect the power supply of 5V on the 6th resistance R 6.
The principle of work of circuit is: the voltage division signal Uo that voltage transformer (VT) T takes out alternating voltage half-wave voltage signal and output dc voltage compares, when the instantaneous value of alternating voltage is slightly larger than the VD value, export a negative edge signal to central processing unit 2, after central processing unit 2 captures this signal, the record current time of synchro timer, simultaneously the instantaneous voltage of AC-input voltage output element is sampled, then this value is converted accordingly, can obtain the interchange and the dc voltage value of required measurement.
Need to prove: above only unrestricted technical scheme of the present invention in order to explanation, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. VD testing circuit that is used for power factor correction control circuit, described power factor correction control circuit includes a central processing unit, it is characterized in that, it comprises a voltage transformer (VT) T, be connected with diode D1 in turn on the output loop of this voltage sensor T, second resistance R 2, comparer D, the 5th resistance R 5 and optocoupler, be connected with the 6th resistance R 6 and the 7th resistance R 7 on one output terminal of optocoupler, the 7th resistance R 7 links to each other with another output terminal of optocoupler and ground connection by one second capacitor C 2, an end that links to each other with the 7th resistance R 7 of second capacitor C 2 links to each other with described central processing unit, also comprise first resistance R 1, first capacitor C 1, the 3rd resistance R 3 and the 4th resistance R 4, wherein:
One end of described first resistance R 1 links to each other with the output terminal of described diode D1, and the other end links to each other with the output terminal of described voltage transformer (VT) T and ground connection;
One end of described first capacitor C 1 links to each other with described comparer D, and the other end links to each other with the output terminal of described voltage transformer (VT) T;
One end of described the 4th resistance R 4 links to each other with the output terminal of described comparer D, and the other end links to each other with the output terminal of described voltage transformer (VT) T;
One end of described the 3rd resistance R 3 links to each other another termination power with the output terminal of described comparer D.
2. the VD testing circuit that is used for power factor correction control circuit according to claim 1 is characterized in that, connects the power supply of 5V on described the 6th resistance R 6, connects the power supply of 15V on described the 3rd resistance R 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102031846A CN101738526B (en) | 2008-11-21 | 2008-11-21 | Direct current output voltage test circuit for power factor correction control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102031846A CN101738526B (en) | 2008-11-21 | 2008-11-21 | Direct current output voltage test circuit for power factor correction control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101738526A true CN101738526A (en) | 2010-06-16 |
| CN101738526B CN101738526B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102031846A Expired - Fee Related CN101738526B (en) | 2008-11-21 | 2008-11-21 | Direct current output voltage test circuit for power factor correction control circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841241A (en) * | 2011-06-23 | 2012-12-26 | 神讯电脑(昆山)有限公司 | Voltage detection circuit |
| PL423144A1 (en) * | 2017-10-12 | 2019-04-23 | Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie | System for measuring voltage with galvanic separation |
| CN112798997A (en) * | 2020-12-30 | 2021-05-14 | 四川长虹空调有限公司 | Frequency converter direct-current voltage detection and correction method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3404936B2 (en) * | 1994-09-08 | 2003-05-12 | ソニー株式会社 | Current resonant switching power supply circuit |
| CN2753056Y (en) * | 2004-12-03 | 2006-01-18 | 深圳市核达中远通电源技术有限公司 | Power factor correct circuit with sectional control function |
| CN100530891C (en) * | 2006-01-24 | 2009-08-19 | 艾默生网络能源系统有限公司 | Sampling circuit for three-level power factor correction circuit and its voltage sampling method |
-
2008
- 2008-11-21 CN CN2008102031846A patent/CN101738526B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841241A (en) * | 2011-06-23 | 2012-12-26 | 神讯电脑(昆山)有限公司 | Voltage detection circuit |
| PL423144A1 (en) * | 2017-10-12 | 2019-04-23 | Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie | System for measuring voltage with galvanic separation |
| CN112798997A (en) * | 2020-12-30 | 2021-05-14 | 四川长虹空调有限公司 | Frequency converter direct-current voltage detection and correction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101738526B (en) | 2012-11-28 |
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