CN104868758A - Quasi-symmetric switch power supply circuit having APFC function - Google Patents
Quasi-symmetric switch power supply circuit having APFC function Download PDFInfo
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- CN104868758A CN104868758A CN201510251521.9A CN201510251521A CN104868758A CN 104868758 A CN104868758 A CN 104868758A CN 201510251521 A CN201510251521 A CN 201510251521A CN 104868758 A CN104868758 A CN 104868758A
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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 invention discloses a quasi-symmetric switch power supply circuit having an APFC function. The circuit is composed of switching elements, diodes, capacitors, resistors, inductors and a current sensor. The circuit is simple in structure, employs fewer components, and reduces the loss of electric energy. The circuit has a PFC adjusting function, so that a magnetization curve of a switch transformer can always work in first and third quadrants, and the service efficiency of the switch transformer is greatly improved.
Description
Technical field
The present invention relates to switching power circuit field, particularly relate to a kind of accurate symmetrical switch power circuit with APFC function.
Background technology
Present Switching Power Supply open up mend circuit be the full-bridge circuit and the half-bridge circuit that have PFC driving stage, add the quantity of electronic device so greatly, too increase the internal resistance of Switching Power Supply, the energy of conversion has certain loss.Constantly cut-off, the magnetization curve of switch transformer is also always at first quartile, and the efficiency of switch transformer reduces greatly.
Summary of the invention
Object of the present invention is exactly the defect existed to overcome above-mentioned prior art, provides a kind of circuit simple, makes the magnetization curve of switch transformer be operated in first quartile and third quadrant, a kind of accurate symmetrical switch power circuit with APFC function always.
The present invention is achieved through the following technical solutions: a kind of accurate symmetrical switch power circuit with APFC function, and comprise the first switching device Q1, it has source electrode, drain electrode, grid; Second switch device Q2, it has source electrode, drain electrode, grid;
First electric capacity C1, it has positive pole, negative pole; Second electric capacity C2, it has the first terminals, the second terminals; 3rd electric capacity C3, it has positive pole, negative pole;
First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7; 8th diode D8;
First inductance L 1, it has the first terminals, the second terminals; First switch transformer T1, its former limit winding has the first terminals, the second terminals, and its vice-side winding has the 3rd terminals, the 4th terminals, the 5th terminals; First resistance R1, the first resistance R2; First current sensor SN;
The anode of the first described diode D1 is connected with the negative electrode of the first ac input end with the second diode D2 simultaneously; The negative electrode of the 3rd described diode D3 is connected with the first terminals of the first inductance L 1 with the negative electrode of the first diode D2 simultaneously; The negative electrode of the 4th described diode D4 is connected with the second ac input end with the anode of the 3rd diode D3 simultaneously; The source electrode of the first switching device Q1 is connected with the first inductance L 1, is connected with the anode of the 6th diode D6, the negative electrode of the 5th diode D5, first terminals of the second electric capacity C2, the drain electrode of second switch device Q2 simultaneously; The negative pole of the first described electric capacity C1 is connected with the anode of the second diode D2, the 4th diode D4, the 5th diode D5 respectively, is also connected with the source electrode of second switch device Q2 simultaneously; First terminals of described switch transformer T1 former limit winding are connected with the anode of the first electric capacity with the drain electrode of the first switching device Q1, the negative electrode of the 6th diode D6 respectively; Second terminals of described switch transformer T1 former limit winding are connected with second terminals of the second electric capacity C2;
The anode of the 7th described diode D7 is connected with the 3rd terminals of switch transformer T1 vice-side winding; The anode of the 8th described diode D8 is connected with the 5th terminals of switch transformer T1 vice-side winding; The positive pole of the 3rd described electric capacity C3 is connected with the negative electrode of the 7th diode D7, the 8th diode D8 respectively, is connected with first terminals of the first resistance R1, output OUT+ simultaneously; Be connected in parallel on the two ends of the 3rd electric capacity C3 after the second described resistance R2 connects with the first resistance R1, the negative pole of the 3rd electric capacity C3 is connected with the 4th terminals of switch transformer T1 vice-side winding; The first described current sensor SN is connected with output OUT-after connecting with the first resistance R1, the second resistance R2.
Further, described switching device Q1, Q2 are any or its combination of triode switch or MOS pipe switch or reverse-blocking tetrode thyristor or IGBT pipe switch.
Further, described switching device Q1, Q2 can be replaced by diode.
Further, the first described electric capacity C1 can multiple electric capacity in parallel, also can at the multiple electric capacity of its tandem, and the second described electric capacity C2 can multiple electric capacity in parallel, also can at the multiple electric capacity of the second electric capacity tandem.
The present invention, compared with existing full-bridge circuit, has following beneficial effect:
1. circuit structure is simple, and the device of use reduces, and decreases the loss of electric energy;
2. be provided with the regulatory function of PFC, the more effective conversion of electric energy,
3. the magnetization curve of switch transformer is operated in first quartile and third quadrant always, and the service efficiency of switch transformer is promoted greatly.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory diagrams with the accurate symmetrical switch power circuit of APFC function of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, a kind of accurate symmetrical switch power circuit with APFC function of the present invention, comprise the first switching device Q1, it has source electrode, drain electrode, grid; Second switch device Q2, it has source electrode, drain electrode, grid;
First electric capacity C1, it has positive pole, negative pole; Second electric capacity C2, it has the first terminals, the second terminals; 3rd electric capacity C3, it has positive pole, negative pole;
First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7; 8th diode D8;
First inductance L 1, it has the first terminals, the second terminals; First switch transformer T1, its former limit winding has the first terminals, the second terminals, and its vice-side winding has the 3rd terminals, the 4th terminals, the 5th terminals; First resistance R1, the first resistance R2; First current sensor SN;
The anode of the first described diode D1 is connected with the negative electrode of the first ac input end with the second diode D2 simultaneously; The negative electrode of the 3rd described diode D3 is connected with the first terminals of the first inductance L 1 with the negative electrode of the first diode D2 simultaneously; The negative electrode of the 4th described diode D4 is connected with the second ac input end with the anode of the 3rd diode D3 simultaneously; The source electrode of the first switching device Q1 is connected with the first inductance L 1, is connected with the anode of the 6th diode D6, the negative electrode of the 5th diode D5, first terminals of the second electric capacity C2, the drain electrode of second switch device Q2 simultaneously; The negative pole of the first described electric capacity C1 is connected with the anode of the second diode D2, the 4th diode D4, the 5th diode D5 respectively, is also connected with the source electrode of second switch device Q2 simultaneously; First terminals of described switch transformer T1 former limit winding are connected with the anode of the first electric capacity with the drain electrode of the first switching device Q1, the negative electrode of the 6th diode D6 respectively; Second terminals of described switch transformer T1 former limit winding are connected with second terminals of the second electric capacity C2;
The anode of the 7th described diode D7 is connected with the 3rd terminals of switch transformer T1 vice-side winding; The anode of the 8th described diode D8 is connected with the 5th terminals of switch transformer T1 vice-side winding; The positive pole of the 3rd described electric capacity C3 is connected with the negative electrode of the 7th diode D7, the 8th diode D8 respectively, is connected with first terminals of the first resistance R1, output OUT+ simultaneously; Be connected in parallel on the two ends of the 3rd electric capacity C3 after the second described resistance R2 connects with the first resistance R1, the negative pole of the 3rd electric capacity C3 is connected with the 4th terminals of switch transformer T1 vice-side winding; The first described current sensor SN is connected with output OUT-after connecting with the first resistance R1, the second resistance R2.
Further, described switching device Q1, Q2 are any or its combination of triode switch or MOS pipe switch or reverse-blocking tetrode thyristor or IGBT pipe switch.
Further, described switching device Q1, Q2 can be replaced by diode.
Further, the first described electric capacity C1 can multiple electric capacity in parallel, also can at the multiple electric capacity of its tandem, and the second described electric capacity C2 can multiple electric capacity in parallel, also can at the multiple electric capacity of the second electric capacity tandem.
The accurate symmetrical switch power circuit workflow that the present invention has APFC function is simultaneously as follows:
When after energising, circuit is started working, first second switch device Q2 is open-minded, first switching device Q1 closes first via electric current by energy-storage travelling wave tube first inductance L 1, second switch device Q2 is to the first inductance L 1 energy storage, and the second road electric current is by the three terminals transferring energy of switch transformer T1 former limit winding to vice-side winding, and to energy-storage travelling wave tube second electric capacity C2 energy storage, at this moment the energy storage in the first electric capacity C1 is also by switch transformer T1 former limit winding, electric capacity C2, switching device Q2 is to the 3rd terminals transferring energy of switch transformer T1 vice-side winding, and to energy-storage travelling wave tube second electric capacity C2 energy storage.
Secondly when the first inductance L 1 energy storage completes, second switch device Q2 closes, first switching device Q1 closes, at this moment the polarity inversion of energy-storage travelling wave tube first inductance L 1, the reversal voltage at the first inductance L 1 two ends superposes with the input voltage of the first inductance L 1, and superimposed voltage passes through the 6th diode D6 to energy-storage travelling wave tube first electric capacity C1 energy storage.
Finally when the first electric capacity C1 energy storage is complete, second switch device Q2 closes, first switching device Q1 is open-minded, at this moment in energy-storage travelling wave tube second electric capacity C2, energy passes through the first switching device Q1 to switch transformer T1 vice-side winding the 5th terminals transferring energy, at this moment the energy level sex reversal in the winding of switch transformer T1 former limit makes the magnetization curve in switch transformer T1 get back to third quadrant from first quartile, make switch transformer T1 be not easy to reach magnetic saturation, the efficiency of switch transformer T1 is improved greatly.Loop control like this.
Claims (4)
1. there is an accurate symmetrical switch power circuit for APFC function, it is characterized in that: comprise the first switching device Q1, second switch device Q2; First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3; First diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8; First inductance L 1; Switch transformer T1, its former limit winding has the first terminals, the second terminals, and its vice-side winding has the 3rd terminals, the 4th terminals, the 5th terminals; First resistance R1, the second resistance R2; First current sensor SN; Output OUT+, output OUT-;
the anode of the first described diode D1 is connected with the negative electrode of the first ac input end with the second diode D2 simultaneously; The negative electrode of the 3rd described diode D3 is connected with the first terminals of the first inductance L 1 with the negative electrode of the first diode D2 simultaneously; The negative electrode of the 4th described diode D4 is connected with the second ac input end with the anode of the 3rd diode D3 simultaneously; The source electrode of the first switching device Q1 is connected with the first inductance L 1, is connected with the anode of the 6th diode D6, the negative electrode of the 5th diode D5, first terminals of the second electric capacity C2, the drain electrode of second switch device Q2 simultaneously; The negative pole of the first described electric capacity C1 is connected with the anode of the second diode D2, the 4th diode D4, the 5th diode D5 respectively, is also connected with the source electrode of second switch device Q2 simultaneously; First terminals of described switch transformer T1 former limit winding are connected with the anode of the first electric capacity with the drain electrode of the first switching device Q1, the negative electrode of the 6th diode D6 respectively; Second terminals of described switch transformer T1 former limit winding are connected with second terminals of the second electric capacity C2;
The anode of the 7th described diode D7 is connected with the 3rd terminals of switch transformer T1 vice-side winding; The anode of the 8th described diode D8 is connected with the 5th terminals of switch transformer T1 vice-side winding; The positive pole of the 3rd described electric capacity C3 is connected with the negative electrode of the 7th diode D7, the 8th diode D8 respectively, is connected with first terminals of the first resistance R1, output OUT+ simultaneously; Be connected in parallel on the two ends of the 3rd electric capacity C3 after the second described resistance R2 connects with the first resistance R1, the negative pole of the 3rd electric capacity C3 is connected with the 4th terminals of switch transformer T1 vice-side winding; The first described current sensor SN is connected with output OUT-after connecting with the first resistance R1, the second resistance R2.
2. according to the accurate symmetrical switch power circuit with APFC function described in claim 1, it is characterized in that: described switching device Q1, Q2 are any or its combination of triode switch or MOS pipe switch or reverse-blocking tetrode thyristor or IGBT pipe switch.
3. the accurate symmetrical switch power circuit with APFC function according to claim 1 or 2, is characterized in that: described switching device Q1, Q2 can be replaced by diode.
4. the accurate symmetrical switch power circuit with APFC function according to claim 1 or 2, it is characterized in that: the first described electric capacity C1 can multiple electric capacity in parallel, also can at the multiple electric capacity of its tandem, the second described electric capacity C2 can multiple electric capacity in parallel, also can at the multiple electric capacity of the second electric capacity tandem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251521.9A CN104868758A (en) | 2015-05-18 | 2015-05-18 | Quasi-symmetric switch power supply circuit having APFC function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251521.9A CN104868758A (en) | 2015-05-18 | 2015-05-18 | Quasi-symmetric switch power supply circuit having APFC function |
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| CN104868758A true CN104868758A (en) | 2015-08-26 |
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| CN201510251521.9A Pending CN104868758A (en) | 2015-05-18 | 2015-05-18 | Quasi-symmetric switch power supply circuit having APFC function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224025A (en) * | 1992-04-21 | 1993-06-29 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| US20030117818A1 (en) * | 2001-12-21 | 2003-06-26 | Hiroyuki Ota | Switching power supply |
| CN101515762A (en) * | 2009-04-07 | 2009-08-26 | 哈尔滨工业大学 | Passive clamping single-phase single-grade bridge type power factor correcting convertor and control method thereof |
| CN102447295A (en) * | 2010-10-07 | 2012-05-09 | 日立电脑机器股份有限公司 | Resonance type charging device and vehicle with the same |
| CN204794738U (en) * | 2015-05-18 | 2015-11-18 | 常州市特迅电子科技有限公司 | Accurate symmetrical switching power supply circuit with APFC function |
-
2015
- 2015-05-18 CN CN201510251521.9A patent/CN104868758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224025A (en) * | 1992-04-21 | 1993-06-29 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| US20030117818A1 (en) * | 2001-12-21 | 2003-06-26 | Hiroyuki Ota | Switching power supply |
| CN101515762A (en) * | 2009-04-07 | 2009-08-26 | 哈尔滨工业大学 | Passive clamping single-phase single-grade bridge type power factor correcting convertor and control method thereof |
| CN102447295A (en) * | 2010-10-07 | 2012-05-09 | 日立电脑机器股份有限公司 | Resonance type charging device and vehicle with the same |
| CN204794738U (en) * | 2015-05-18 | 2015-11-18 | 常州市特迅电子科技有限公司 | Accurate symmetrical switching power supply circuit with APFC function |
Non-Patent Citations (1)
| Title |
|---|
| ZHONGMING YE ET AL.: "A Topology Study of Single-Phase Offline AC/DC Converters for High Brightness White LED Lighting with Power Factor Pre-regulation and Brightness Dimmable", 《INDUSTRIAL ELECTRONICS, 2008.IECON 2008. 34TH ANNUAL CONFERENCE OF IEEE》 * |
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Effective date of abandoning: 20181214 |