CN204068687U - A kind of APFC - Google Patents
A kind of APFC Download PDFInfo
- Publication number
- CN204068687U CN204068687U CN201420570043.9U CN201420570043U CN204068687U CN 204068687 U CN204068687 U CN 204068687U CN 201420570043 U CN201420570043 U CN 201420570043U CN 204068687 U CN204068687 U CN 204068687U
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- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model discloses a kind of APFC, comprise anti-interference filtration circuit, rectification circuit, booster circuit and power factor correction circuit, anti-interference filtration circuit comprises electric capacity C1, electric capacity C2 and inductance L 1, rectification circuit comprises rectifier bridge Q and inductance L 2, booster circuit comprises transformer T and resistance R4, and power factor correction circuit comprises chip U1 and metal-oxide-semiconductor.The utility model controls whole power factor correction circuit by using chip L6562, make that circuit start electric current is little, peripheral component is few and with low cost, can meet that power-supply system is lightweight, good stability, reliability are high simultaneously, greatly improve the calibration result of power factor (PF).
Description
Technical field
The utility model relates to a kind of correcting circuit, specifically a kind of APFC.
Background technology
Along with China's expanding economy, modern industry is rapidly developed, various change current flow devices use more and more, capacity is also increasing, add some non-linear electric equipment and be also linked into electrical network, the harmonic current injection produced is in electrical network, the voltage waveform of utility network is distorted, seriously pollute the environment of electrical network, the quality of power supply is caused to decline, also seriously threaten the safe operation of various electric equipment in electrical network, therefore must limit high order harmonic component to pollute, electrically tissue has successively formulated relevant criterion both at home and abroad.
The method of solution power electronic equipment harmonic pollution problems conventional at present has two kinds: 1. pair electrical network adopts filtering compensation; 2. pair power electronic equipment itself is transformed, and namely carries out power factor correction.Both compare, and power factor correction more effectively can eliminate the harmonic wave of rectifying device, has prospect widely, how to improve Active PFC effect and have become the important research direction of of power electronic technology.
Utility model content
The purpose of this utility model is to provide that a kind of circuit structure is simple, cost is low and the APFC that power factor correction is effective, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of APFC, comprise anti-interference filtration circuit, rectification circuit, booster circuit and power factor correction circuit, described anti-interference filtration circuit comprises electric capacity C1, electric capacity C2 and inductance L 1, described rectification circuit comprises rectifier bridge Q and inductance L 2, described booster circuit comprises transformer T and resistance R4, and described power factor correction circuit comprises chip U1 and metal-oxide-semiconductor.
Described electric capacity C1 one end connects fuse FU and inductance L 1 respectively, the electric capacity C1 other end connects inductance L 2 and 220V AC power respectively, the 220V AC power other end connects the fuse FU other end, described inductance L 1 other end connects electric capacity C2 and rectifier bridge Q port one respectively, rectifier bridge Q port 4 ground connection, rectifier bridge Q port 3 connects the electric capacity C2 other end and inductance L 2 other end respectively, rectifier bridge Q port 2 is connection transformer T winding L 3 respectively, resistance R1, resistance R3 and electric capacity C3, transformer T winding L 3 other end connects diode D2 positive pole and metal-oxide-semiconductor D pole respectively, diode D2 negative pole is contact resistance R8 respectively, electric capacity C8 positive pole and load RL, resistance R8 other end contact resistance R9, the resistance R9 other end connects electric capacity C8 negative pole respectively, the load RL other end, resistance R7, electric capacity C7, chip U1 pin 6, electric capacity C5 negative pole, electric capacity C4, resistance R2 and the electric capacity C3 other end ground connection, described chip U1 pin 1 connects electric capacity C6, the electric capacity C6 other end connects chip U1 pin 2 and metal-oxide-semiconductor S pole respectively, described chip U1 pin 7 contact resistance R5, the resistance R5 other end connects metal-oxide-semiconductor G pole, described chip U1 pin 4 connects the electric capacity C7 other end and resistance R6 respectively, the resistance R6 other end contact resistance R7 other end, described chip U1 pin 5 contact resistance R4, the resistance R4 other end is connection transformer T winding L 4 and diode D1 positive pole respectively, transformer T winding L 4 other end ground connection, described chip U1 pin 8 connects diode D1 negative pole respectively, electric capacity C5 positive pole and the resistance R3 other end, described chip U1 pin 3 is the contact resistance R1 other end respectively, the resistance R2 other end and the electric capacity C4 other end.
As further program of the utility model: described chip U1 model is L6562.
As the utility model further scheme: the effect of described electric capacity C3 is in order to the high-frequency signal in filtering inductive current, reduce the harmonic content existed in input current; Described electric capacity C4 is used for the high-frequency interferencing signal of filtering chip U1 pin 3; Described electric capacity C6 is connected to chip U1 pin 1 and chip U1 pin 2 forms Voltage loop compensating network.
Compared with prior art, the beneficial effects of the utility model are: the utility model controls whole power factor correction circuit by using chip L6562, make that circuit start electric current is little, peripheral component is few and with low cost, can meet that power-supply system is lightweight, good stability, reliability are high simultaneously, greatly improve the calibration result of power factor (PF).
Accompanying drawing explanation
Fig. 1 is the circuit diagram of APFC.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of APFC, comprise anti-interference filtration circuit, rectification circuit, booster circuit and power factor correction circuit, anti-interference filtration circuit comprises electric capacity C1, electric capacity C2 and inductance L 1, rectification circuit comprises rectifier bridge Q and inductance L 2, and booster circuit comprises transformer T and resistance R4, and power factor correction circuit comprises chip U1 and metal-oxide-semiconductor.
Electric capacity C1 one end connects fuse FU and inductance L 1 respectively, the electric capacity C1 other end connects inductance L 2 and 220V AC power respectively, the 220V AC power other end connects the fuse FU other end, inductance L 1 other end connects electric capacity C2 and rectifier bridge Q port one respectively, rectifier bridge Q port 4 ground connection, rectifier bridge Q port 3 connects the electric capacity C2 other end and inductance L 2 other end respectively, rectifier bridge Q port 2 is connection transformer T winding L 3 respectively, resistance R1, resistance R3 and electric capacity C3, transformer T winding L 3 other end connects diode D2 positive pole and metal-oxide-semiconductor D pole respectively, diode D2 negative pole is contact resistance R8 respectively, electric capacity C8 positive pole and load RL, resistance R8 other end contact resistance R9, the resistance R9 other end connects electric capacity C8 negative pole respectively, the load RL other end, resistance R7, electric capacity C7, chip U1 pin 6, electric capacity C5 negative pole, electric capacity C4, resistance R2 and the electric capacity C3 other end ground connection, chip U1 pin 1 connects electric capacity C6, the electric capacity C6 other end connects chip U1 pin 2 and metal-oxide-semiconductor S pole respectively, chip U1 pin 7 contact resistance R5, the resistance R5 other end connects metal-oxide-semiconductor G pole, chip U1 pin 4 connects the electric capacity C7 other end and resistance R6 respectively, the resistance R6 other end contact resistance R7 other end, chip U1 pin 5 contact resistance R4, the resistance R4 other end is connection transformer T winding L 4 and diode D1 positive pole respectively, transformer T winding L 4 other end ground connection, chip U1 pin 8 connects diode D1 negative pole respectively, electric capacity C5 positive pole and the resistance R3 other end, chip U1 pin 3 is the contact resistance R1 other end respectively, the resistance R2 other end and the electric capacity C4 other end.
Chip U1 model is L6562.
The effect of electric capacity C3 is in order to the high-frequency signal in filtering inductive current, reduces the harmonic content existed in input current; Electric capacity C4 is used for the high-frequency interferencing signal of filtering chip U1 pin 3; Electric capacity C6 is connected to chip U1 pin 1 and chip U1 pin 2 forms Voltage loop compensating network.
Operation principle of the present utility model is: in Fig. 1, electric capacity C1, electric capacity C2 and inductance L 1 form two π anti-emi filter, the 220V alternating current of input is transformed to full sinusoidal wave DC pulse after rectifier bridge Q rectification, as the input of booster circuit, the effect of electric capacity C3 is in order to the high-frequency signal in filtering inductive current, reduce the harmonic content existed in input current, the resistance pressure-dividing network that full sinusoidal wave direct voltage after rectification is formed through R1 and resistance R2, then be input in the multiplier of chip U1 inside by the pin 3 of chip U1, be used for determining waveform and the phase place of input voltage, electric capacity C4 is in order to the high-frequency interferencing signal of filtering chip pin 3.Transformer T winding L 4 is used as the highly sensitive transducer of primary inductance, the high-frequency current of transformer T winding L 3 is sent to resistance R4 and is converted to voltage signal, to chip U1 pin 5 with over-current detection signal, the drive singal of chip U1 is connected to the G pole of metal-oxide-semiconductor by resistance R5, resistance R7 is as the detection resistance of transformer coil L4 electric current, in order to the electric current of the rising edge metal-oxide-semiconductor of inductive current of sampling, resistance R7 one end ground connection, another is connected on the S pole of metal-oxide-semiconductor, be connected to the pin 4 of chip U1 through resistance R6 simultaneously, resistance R9 and resistance R8 not only forms resistance pressure-dividing network, also the negative feedback loop of output voltage is formed, electric capacity C6 is connected between chip U1 pin 1 and chip U1 pin 2, the compensating network of composition Voltage loop.
Claims (3)
1. an APFC, comprise anti-interference filtration circuit, rectification circuit, booster circuit and power factor correction circuit, it is characterized in that, described anti-interference filtration circuit comprises electric capacity C1, electric capacity C2 and inductance L 1, described rectification circuit comprises rectifier bridge Q and inductance L 2, described booster circuit comprises transformer T and resistance R4, and described power factor correction circuit comprises chip U1 and metal-oxide-semiconductor;
Described electric capacity C1 one end connects fuse FU and inductance L 1 respectively, the electric capacity C1 other end connects inductance L 2 and 220V AC power respectively, the 220V AC power other end connects the fuse FU other end, described inductance L 1 other end connects electric capacity C2 and rectifier bridge Q port one respectively, rectifier bridge Q port 4 ground connection, rectifier bridge Q port 3 connects the electric capacity C2 other end and inductance L 2 other end respectively, rectifier bridge Q port 2 is connection transformer T winding L 3 respectively, resistance R1, resistance R3 and electric capacity C3, transformer T winding L 3 other end connects diode D2 positive pole and metal-oxide-semiconductor D pole respectively, diode D2 negative pole is contact resistance R8 respectively, electric capacity C8 positive pole and load RL, resistance R8 other end contact resistance R9, the resistance R9 other end connects electric capacity C8 negative pole respectively, the load RL other end, resistance R7, electric capacity C7, chip U1 pin 6, electric capacity C5 negative pole, electric capacity C4, resistance R2 and the electric capacity C3 other end ground connection, described chip U1 pin 1 connects electric capacity C6, the electric capacity C6 other end connects chip U1 pin 2 and metal-oxide-semiconductor S pole respectively, described chip U1 pin 7 contact resistance R5, the resistance R5 other end connects metal-oxide-semiconductor G pole, described chip U1 pin 4 connects the electric capacity C7 other end and resistance R6 respectively, the resistance R6 other end contact resistance R7 other end, described chip U1 pin 5 contact resistance R4, the resistance R4 other end is connection transformer T winding L 4 and diode D1 positive pole respectively, transformer T winding L 4 other end ground connection, described chip U1 pin 8 connects diode D1 negative pole respectively, electric capacity C5 positive pole and the resistance R3 other end, described chip U1 pin 3 is the contact resistance R1 other end respectively, the resistance R2 other end and the electric capacity C4 other end.
2. APFC according to claim 1, is characterized in that, described chip U1 model is L6562.
3. APFC according to claim 1, is characterized in that, the effect of described electric capacity C3 is in order to the high-frequency signal in filtering inductive current, reduces the harmonic content existed in input current; Described electric capacity C4 is used for the high-frequency interferencing signal of filtering chip U1 pin 3; Described electric capacity C6 is connected to chip U1 pin 1 and chip U1 pin 2 forms Voltage loop compensating network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570043.9U CN204068687U (en) | 2014-09-23 | 2014-09-23 | A kind of APFC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570043.9U CN204068687U (en) | 2014-09-23 | 2014-09-23 | A kind of APFC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068687U true CN204068687U (en) | 2014-12-31 |
Family
ID=52210129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420570043.9U Expired - Fee Related CN204068687U (en) | 2014-09-23 | 2014-09-23 | A kind of APFC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068687U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305806A (en) * | 2015-10-13 | 2016-02-03 | 江苏绿扬电子仪器集团有限公司 | Active power factor correction circuit system |
| CN106357105A (en) * | 2016-09-30 | 2017-01-25 | 广西大学 | Electronic APF (active power filter) control circuit |
-
2014
- 2014-09-23 CN CN201420570043.9U patent/CN204068687U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305806A (en) * | 2015-10-13 | 2016-02-03 | 江苏绿扬电子仪器集团有限公司 | Active power factor correction circuit system |
| CN106357105A (en) * | 2016-09-30 | 2017-01-25 | 广西大学 | Electronic APF (active power filter) control circuit |
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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: 20141231 Termination date: 20150923 |
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| EXPY | Termination of patent right or utility model |