CN102742132A - Bridgeless power-factor correction converter - Google Patents
Bridgeless power-factor correction converter Download PDFInfo
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- CN102742132A CN102742132A CN201180003734XA CN201180003734A CN102742132A CN 102742132 A CN102742132 A CN 102742132A CN 201180003734X A CN201180003734X A CN 201180003734XA CN 201180003734 A CN201180003734 A CN 201180003734A CN 102742132 A CN102742132 A CN 102742132A
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- 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
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
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- 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
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/0085—Partially controlled bridges
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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 bridgeless power-factor correction converter, comprising an input power supply, a first inductor, a second inductor, a first switch tube, a second switch tube, a first diode, a second diode, an output capacitor and a selective conduction unit, wherein a first end of the input power supply is connected with an anode of the first diode through the first inductor; a second end of the input power supply is connected with an anode of the second diode through the second inductor; the cathodes of the first diode and the second diode are connected with one end of the output capacitor; the other end of output capacitor is connected with the anodes of the first diode and the second diode respectively through the first switch tube and the second switch tube; the other end of the output capacitor is connected with the first switch tube and the second switch tube through the selective conduction unit. A common-mode noise of the power-factor correction converter can be reduced effectively.
Description
Technical field
The present invention relates to power electronics, particularly relate to a kind of Bridgeless power factor correction converter.
Background technology
Existing conventional non-bridge PFC (Power Factor Correction) circuit such as Fig. 1 are characterized in that device is few, and cost is low, and efficient is high.Shortcoming is that serious EMI common-mode noise is arranged.Existing a kind of improved non-bridge PFC circuits such as Fig. 2 have been characterized in solving the problem of EMI common-mode noise, with routine have bridge PFC similar.Shortcoming is to have increased by two diode D3, and D4 can only reduce the loss of half rectifier bridge.Be equivalent to two same pfc circuits and work respectively, the utilance of inductance is low, and power density is low.Existing a kind of improved non-bridge PFC circuits in addition (referring to U.S. Pat 7,215,560B2) like Fig. 3, is characterized in having substituted the D3/D4 among Fig. 2 with electric capacity C1/C2.Shortcoming is to understand on the electric capacity through big electric current, needs bigger electric capacity, and the life-span of electric capacity lacks in addition, has reduced the reliability of complete machine; Need two inductance, power density is low.
The referenced patent document:
ZL?200510079923.1；
US?7215560B2；
CN?101958657A。
Summary of the invention
Main purpose of the present invention is exactly the deficiency to prior art, and the Bridgeless power factor correction converter of a kind of low common-mode noise and high power density is provided.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of Bridgeless power factor correction converter; Comprise input power supply, first inductance, second inductance, first switching tube, second switch pipe, first diode, second diode and output capacitance; First end of said input power supply connects the anode of said first diode through said first inductance; Second end of said input power supply connects the anode of said second diode through said second inductance; The negative electrode of said first diode and said second diode is connected an end of said output capacitance; The other end of said output capacitance is connected the anode of said first diode and said second diode respectively with said second switch pipe through said first switching tube; Said Bridgeless power factor correction converter is characterised in that, also comprises the selectivity onunit, and the said other end of said output capacitance connects said first switching tube and said second switch pipe through the selectivity onunit.
Said first inductance and said second inductance can be that coupling inductance forms, and also can be to adopt two independently inductance.
According to a kind of embodiment, said selectivity onunit is the 3rd diode or power switch pipe, if adopt said the 3rd diode, its anode connects the said other end of said output capacitance.
Said power switch pipe can be metal oxide semiconductor field effect tube (MOSFET; Metal Oxide Semiconductor Field Effect Transistor) or igbt (IGBT; Insulated Gate Bipolar Transistor), also can adopt the switching tube of other types.
According to another kind of embodiment, said selectivity onunit comprises the 3rd diode and is connected in parallel on the 3rd switching tube on said the 3rd diode that the anode of said the 3rd diode connects the said other end of said output capacitance.
Said selectivity onunit can further include the 4th switching tube, and said the 4th switching tube and said the 3rd switching tube are connected in parallel on said the 3rd diode after the top is connected.
A kind of Bridgeless power factor correction converter; Comprise input power supply, first inductance, first switching tube, second switch pipe, first diode, second diode and output capacitance; First end of said input power supply connects the anode of said first diode through said first inductance; Second end of said input power supply connects the anode of said second diode; The negative electrode of said first diode and said second diode is connected an end of said output capacitance, and the other end of said output capacitance is connected the anode of said first diode and said second diode respectively with said second switch pipe through said first switching tube, it is characterized in that; Also comprise the selectivity onunit, the said other end of said output capacitance connects said first switching tube and said second switch pipe through the selectivity onunit.
A kind of Bridgeless power factor correction converter; Comprise input power supply, first inductance, second inductance, first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube and output capacitance; First end of said input power supply connects an end of said first switching tube through said first inductance; Second end of said input power supply connects an end of said the 3rd switching tube through said second inductance; The other end of said first switching tube and said the 3rd switching tube is connected an end of said output capacitance; The other end of said output capacitance is connected a said end of said first switching tube and a said end of said the 3rd switching tube through said second switch pipe respectively with said the 4th switching tube; It is characterized in that, also comprise the selectivity onunit, the said other end of said output capacitance connects said two switching tubes and said the 4th switching tube through the selectivity onunit.
According to a kind of embodiment, said selectivity onunit is the 3rd diode or power switch pipe, if adopt said the 3rd diode, its anode connects the said other end of said output capacitance.
According to another kind of embodiment, said selectivity onunit comprises the 3rd diode and is connected in parallel on the 5th switching tube on said the 3rd diode that the anode of said the 3rd diode connects the said other end of said output capacitance.
A kind of Bridgeless power factor correction converter; Comprise input power supply, first inductance, first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube and output capacitance; First end of said input power supply connects an end of said first switching tube through said first inductance; Second end of said input power supply connects an end of said the 3rd switching tube; The other end of said first switching tube and said the 3rd switching tube is connected an end of said output capacitance, and the other end of said output capacitance is connected a said end of said first switching tube and a said end of said the 3rd switching tube through said second switch pipe respectively with said the 4th switching tube, it is characterized in that; Also comprise the selectivity onunit, the said other end of said output capacitance connects said two switching tubes and said the 4th switching tube through the selectivity onunit.
A kind of Bridgeless power factor circuit correcting circuit comprises a plurality of aforementioned any Bridgeless power factor correction converter of crisscross parallel, shared said input power supply of these Bridgeless power factor correction converters and said output capacitance.
Beneficial technical effects of the present invention is:
The present invention is through being provided with the selectivity onunit on the other end of output capacitance; For example diode or power switch pipe, this selectivity onunit is configured to (diode) or controlled processing (power switch pipe) only allows its conducting on the direction of hope, thereby makes parasitic capacitance in switch periods, can not be in the state that discharges and recharges all the time; Like this; Because charging current is little on the parasitic capacitance, magnitude of voltage is more stable, so effectively reduced common-mode noise.Compare existing Bridgeless power factor correction converter, the present invention can reduce the volume of power supply, improves power density, reduces the EMI common-mode noise, and at cost, efficient, power density, volume, EMI is last can accomplish balance preferably.
Description of drawings
Fig. 1 is existing first kind of Bridgeless power factor correction converter topological diagram;
Fig. 2 is existing second kind of Bridgeless power factor correction converter topological diagram;
Fig. 3 is existing the third Bridgeless power factor correction converter topological diagram;
Fig. 4 is Bridgeless power factor correction converter topological diagram according to an embodiment of the invention;
Fig. 5 A representes that the positive half cycle second diode D2 of circuit shown in Figure 4 has neither part nor lot in work;
Fig. 5 B representes that the circuit negative half period first diode D1 shown in Figure 4 has neither part nor lot in work;
Fig. 6 and Fig. 7 represent respectively in the circuit shown in Figure 4 over the ground parasitic capacitance and input with export between equivalent parasitic capacitances;
Fig. 8 representes the voltage waveform on the equivalent parasitic capacitances in the circuit shown in Figure 1;
Fig. 9 representes the voltage waveform on the equivalent parasitic capacitances in the circuit shown in Figure 4;
The Bridgeless power factor correction converter of Figure 10-14 expression other embodiment according to the present invention;
Figure 15 representes crisscross parallel Bridgeless power factor correction translation circuit according to an embodiment of the invention;
Figure 16 representes the situation of switching tube S3 employing MOSFET in the circuit shown in Figure 11;
Figure 17 a, b represent the body diode reverse recovery characteristic separately of diode D3 and MOSFET in the circuit shown in Figure 16;
Figure 18 representes that switching tube S3 in the circuit shown in Figure 12, S4 adopt a kind of situation to the MOSFET of top series connection;
The Bridgeless power factor correction converter topological diagram of Figure 19 another embodiment according to the present invention.
Embodiment
Below combine accompanying drawing that the present invention is further specified through embodiment.
Referring to Fig. 4, in one embodiment, pfc converter comprises input power supply A, the first and second inductance L 1A, L1B, the first and second switching tube S1, S2, first to the 3rd diode D1, D2, D3, and output capacitance Co.The concrete connected mode of circuit is as shown in Figure 4.
The operation principle of circuit is following:
At the positive half cycle of input; Second switch pipe S2 is in (or HF switch) state of opening all the time; The first switching tube S1 is in the HF switch state, when the first switching tube S1 opens, power supply through the first switching tube S1 and second switch pipe S2 to the first inductance L 1A and the second inductance L 1B energy storage of charging; The first switching tube S1 turn-offed when electric current reached set point; The first inductance L 1A and the second inductance L 1B voltage reversal are connected with power supply through the first diode D1, and the 3rd diode D3 and second switch pipe S2 are to output capacitance Co charging with to the load transfer energy of back grade.When inductive current dropped to set point (or switch periods end), the first switching tube S1 was open-minded, to inductance L 1A and the L1B energy storage of charging once more, so went round and began again.At the positive half cycle of input, the second diode D2 does not participate in work, referring to Fig. 5 A.Import positive half cycle and also can utilize the body diode of second switch pipe S2 to come conducting, to be in the HF switch state also be feasible to second switch pipe S2 under this situation.
At the input negative half period; The first switching tube S1 is in (or HF switch) state of opening all the time; Second switch pipe S2 is in the HF switch state, when second switch pipe S2 opens, power supply through second switch pipe S2 and the first switching tube S1 to the second inductance L 1B and the first inductance L 1A energy storage of charging; Second switch pipe S2 turn-offed when electric current reached set point; The second inductance L 1B and the first inductance L 1A voltage reversal are connected with power supply through the second diode D2, and the 3rd diode D3 and the first switching tube S1 are to output capacitance Co charging with to the load transfer energy of back level.When inductive current dropped to set point (or switch periods end), S2 was open-minded for the second switch pipe, to inductance L 1B and the L1A energy storage of charging once more, so went round and began again.At the input negative half period, the first diode D1 does not participate in work, referring to Fig. 5 B.The input negative half period also can utilize the body diode of the first switching tube S1 to come conducting, and to be in the HF switch state also be feasible to the first switching tube S1 under this situation.
The effect of the 3rd diode D3 once of following surface analysis is referring to Fig. 6.Suppose that the N line connects the earth, output representes with Cp that over against the parasitic capacitance of the earth output ground is represented with Cn the parasitic capacitance of the earth.Parasitic capacitance equivalence between input and the output is represented with C1, referring to Fig. 7.
Shown in Figure 8 under the situation that does not have the 3rd diode D3 (referring to Fig. 1), when L1=L2 (perhaps L1A=L1B), the voltage waveform situation on the equivalent capacity C1.At the positive half cycle of input; Equivalent capacity C1 goes up the charging/discharging voltage waveform cyclic variation between
and
in several switch periods; Wherein, Vin is the alternating voltage of input; Vo is the output voltage of pfc circuit, serves as with reference to ground with output ground.
Be provided with in the embodiment of the invention shown in Figure 9 under the situation of the 3rd diode D3 (referring to Fig. 4), when L1A=L1B or L1=L2, the voltage waveform situation on the equivalent capacity C1.Because the existence of the 3rd diode D3; At the positive half cycle of input; Equivalent capacity C1 go up in several switch periods the voltage waveform that discharges and recharges maintains
when the input negative half period, discharge and recharge the magnitude situation on the equivalent capacity C1 and to import positive half cycle the same.
Comparison diagram 8 can see with Fig. 9, equivalent capacity C1 HF switch in the cycle voltage fluctuation at two ends significantly reduce, thereby can significantly reduce the common-mode noise of EMI.
Referring to Figure 10, according to another embodiment, the 3rd diode D3 among Fig. 4 can use power switch pipe S3 to replace.Through the opportunity that power controlling switching tube S3 opens and turn-offs, power switch tube S 3 can play the identical effect with the 3rd diode D3 shown in Figure 4.
Referring to Figure 11; According to another embodiment; The 3rd diode D3 among Fig. 4 can replace with the selectivity onunit of another kind of form; It comprises the 3rd diode D3 and is connected in parallel on the 3rd switching tube S3 between the 3rd diode D3 negative electrode and the anode that output capacitance Co is connected the first switching tube S1 and second switch pipe S2 through the 3rd diode D3 with the 3rd switching tube S3.The reason that increases by the 3rd switching tube S3 is:
With switching tube S3 is that MOSFET is an example; Referring to Figure 16; Wherein SD3 is the body diode of switching tube S3, and the recovery characteristics of the body diode of MOSFET does not have the recovery characteristics of independent diode good, shown in Figure 17 a and Figure 17 b; So this embodiment can reduce the loss that reverse current recovery characteristics difference causes by diode D3 compared with independent employing switching tube S3, raises the efficiency.
The operation principle of Figure 10 and circuit shown in Figure 11 is similar with circuit shown in Figure 4, and difference is the control that has increased switching tube S3.At the positive half cycle of input, when the first switching tube S1 opened, switching tube S3 turn-offed; When the first switching tube S1 turn-offed, switching tube S3 was open-minded.At the input negative half period, when second switch pipe S2 opened, switching tube S3 turn-offed; When second switch pipe S2 turn-offed, switching tube S3 was open-minded.
Referring to Figure 12, according to another embodiment, the 3rd switching tube S3 among Figure 11 can further replace with the 3rd switching tube S3 and the 4th switching tube S4 to the series connection of top form.The 3rd switching tube S3 is the same with the control of the 3rd switching tube S3 among Figure 11 with the 4th switching tube S4 among Figure 12.Adopt two switching tubes that the advantage of top series connection is:
With switching tube S3, S4 is that MOSFET is an example, referring to Figure 18.Wherein SD3, SD4 are respectively the body diode of switching tube S3, S4; The ON time of switching tube S3, S4 is t1; Diode D3 works during the time at t2 like this, and t2 in the time because body diode SD3 and SD4 are in the opposite direction, electric current does not have path; Can avoid like this because the loss that the reverse current recovery characteristics difference of MOSFET body diode causes is raised the efficiency.In addition, the existence of parallel diode D3 provides reliable unidirectional conducting branch road, can prevent because the body diode of switching tube S3, S4 connects and deleterious impact the top.Among Figure 18, the source electrode of switching tube S3, S4 links together, and as the replacement form, it also is feasible that the drain electrode of switching tube S3, S4 is joined together to form the top.
Referring to Figure 13; According to another embodiment; The first and second diode D1 among Fig. 4, D2, also can replace to power switch tube S 1, S3, also can be power switch tube S 5 or diode (not shown) and connect the selectivity onunit that output capacitance Co connects that end of output ground.
In certain embodiments, first inductance and second inductance can be two independent inductance.Figure 14 has represented to adopt a kind of embodiment of two independent inductance L 1 and L2, and each inductance is equivalent to the half the of an inductance size in the circuit shown in Figure 2 respectively.
In a preferred embodiment, shown in Fig. 4 and Figure 10-13, the first inductance L 1A and the second inductance L 1B adopt the form of coupling inductance, and this coupling inductance cumulative volume is equivalent to the size of an inductance in the circuit shown in Figure 2.Adopt coupling inductance, can reduce inductance quantity, reduce volume, improve the power density of power supply, improve the utilance of inductance.
Figure 15 is the Bridgeless power factor circuit correcting circuit of the staggered control of a kind of embodiment; This circuit is except shared input power supply and output capacitance; N Bridgeless power factor correction converter main circuit with crisscross parallel, n are more than or equal to 2, and the structure of each main circuit and circuit shown in Figure 4 are similar; Diode D3, D23 have been increased ... Dn3 also can adopt the main circuit that is similar to other embodiment.
Figure 19 has explained the Bridgeless power factor correction converter of another embodiment; Differently with Fig. 4 be only to have used an inductance L 1 with circuit shown in Figure 14; This situation is the limit that the inductance of inductance L 1A and inductance L 1B (Fig. 4) or inductance L 1 and inductance L 2 (Figure 14) is measured different value; The inductance value that is inductance L 1B is 0; The inductance value of inductance L 1A is the inductance value sum of before this inductance L 1A and L1B (or the inductance value of inductance L 2 is 0, and the inductance value of inductance L 1 is inductance L 1 and the inductance value sum of L2 before this).Vice versa.Therefore the voltage stress of diode D3 can uprise in this case, is unfavorable for the type selecting of diode, and it is more excellent using combination and the L1A=L1B of two inductance or a coupling inductance or L1=L2.Except that inductance, other versions of circuit shown in Figure 19 can be with reference to Figure 10-14.
Equally, each inverter main circuit also can only use an inductance in the Bridgeless power factor circuit correcting circuit shown in Figure 15.
Among all embodiment, each switching tube all can be MOSFET or IGBT constant power switching tube, also can adopt the switching tube of other types.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. Bridgeless power factor correction converter; Comprise input power supply, first inductance, second inductance, first switching tube, second switch pipe, first diode, second diode and output capacitance; First end of said input power supply connects the anode of said first diode through said first inductance; Second end of said input power supply connects the anode of said second diode through said second inductance; The negative electrode of said first diode and said second diode is connected an end of said output capacitance; The other end of said output capacitance is connected the anode of said first diode and said second diode respectively with said second switch pipe through said first switching tube; It is characterized in that, also comprise the selectivity onunit, the said other end of said output capacitance connects said first switching tube and said second switch pipe through the selectivity onunit.
2. Bridgeless power factor correction converter according to claim 1 is characterized in that, said first inductance and said second inductance are independently inductance of coupling inductance or two.
3. Bridgeless power factor correction converter according to claim 1 and 2 is characterized in that, said selectivity onunit is the 3rd diode or power switch pipe, and the anode of said the 3rd diode connects the said other end of said output capacitance.
4. Bridgeless power factor correction converter according to claim 1 and 2; It is characterized in that; Said selectivity onunit comprises the 3rd diode and is connected in parallel on the 3rd switching tube on said the 3rd diode that the anode of said the 3rd diode connects the said other end of said output capacitance.
5. Bridgeless power factor correction converter according to claim 4 is characterized in that, said selectivity onunit also comprises the 4th switching tube, and said the 4th switching tube and said the 3rd switching tube are connected in parallel on said the 3rd diode after the top is connected.
6. Bridgeless power factor correction converter; Comprise input power supply, first inductance, first switching tube, second switch pipe, first diode, second diode and output capacitance; First end of said input power supply connects the anode of said first diode through said first inductance; Second end of said input power supply connects the anode of said second diode; The negative electrode of said first diode and said second diode is connected an end of said output capacitance, and the other end of said output capacitance is connected the anode of said first diode and said second diode respectively with said second switch pipe through said first switching tube, it is characterized in that; Also comprise the selectivity onunit, the said other end of said output capacitance connects said first switching tube and said second switch pipe through the selectivity onunit.
7. Bridgeless power factor correction converter; Comprise input power supply, first inductance, second inductance, first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube and output capacitance; First end of said input power supply connects an end of said first switching tube through said first inductance; Second end of said input power supply connects an end of said the 3rd switching tube through said second inductance; The other end of said first switching tube and said the 3rd switching tube is connected an end of said output capacitance; The other end of said output capacitance is connected a said end of said first switching tube and a said end of said the 3rd switching tube through said second switch pipe respectively with said the 4th switching tube; It is characterized in that, also comprise the selectivity onunit, the said other end of said output capacitance connects said two switching tubes and said the 4th switching tube through the selectivity onunit.
8. Bridgeless power factor correction converter according to claim 7 is characterized in that, said selectivity onunit is the 3rd diode or power switch pipe, and the anode of said the 3rd diode connects the said other end of said output capacitance.
9. Bridgeless power factor correction converter; Comprise input power supply, first inductance, first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube and output capacitance; First end of said input power supply connects an end of said first switching tube through said first inductance; Second end of said input power supply connects an end of said the 3rd switching tube; The other end of said first switching tube and said the 3rd switching tube is connected an end of said output capacitance; The other end of said output capacitance is connected a said end of said first switching tube and a said end of said the 3rd switching tube through said second switch pipe respectively with said the 4th switching tube; It is characterized in that, also comprise the selectivity onunit, the said other end of said output capacitance connects said two switching tubes and said the 4th switching tube through the selectivity onunit.
10. a Bridgeless power factor circuit correcting circuit comprises a plurality of according to each described Bridgeless power factor correction converter of claim 1-9 of crisscross parallel, shared said input power supply of said a plurality of Bridgeless power factor correction converters and said output capacitance.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2011/083097 WO2013078602A1 (en) | 2011-11-29 | 2011-11-29 | Bridgeless power factor correction converter |
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| CN102742132A true CN102742132A (en) | 2012-10-17 |
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Cited By (7)
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| CN103066865A (en) * | 2013-02-04 | 2013-04-24 | 电子科技大学 | Three-phase bridgeless power factor correction alternating current-direct current converter |
| CN105226932A (en) * | 2015-10-21 | 2016-01-06 | 上海大学 | High efficiency circuit of power factor correction topological structure and control method thereof |
| CN105490551A (en) * | 2015-12-28 | 2016-04-13 | 华为技术有限公司 | Circuit of uninterrupted power supply |
| CN106208669A (en) * | 2016-09-07 | 2016-12-07 | 深圳市核达中远通电源技术有限公司 | A kind of power supply topologies |
| CN106487249A (en) * | 2016-10-19 | 2017-03-08 | 南京航空航天大学 | A kind of high-gain non-bridge PFC changer for low-voltage, high-current occasion |
| CN111181377A (en) * | 2020-01-07 | 2020-05-19 | 茂硕电源科技股份有限公司 | Power factor correction circuit |
| CN114204796A (en) * | 2021-12-14 | 2022-03-18 | 杭州优特电源有限公司 | Bridgeless power factor correction circuit |
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| CN112072907B (en) * | 2020-08-05 | 2024-06-14 | 吉林大学 | Bridgeless PFC circuit without current sensor |
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| CN1564447A (en) * | 2004-04-13 | 2005-01-12 | 浙江大学 | Composite active clamped 3-phase A.C-D.C power factor correction transformer |
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| CN106487249A (en) * | 2016-10-19 | 2017-03-08 | 南京航空航天大学 | A kind of high-gain non-bridge PFC changer for low-voltage, high-current occasion |
| CN111181377A (en) * | 2020-01-07 | 2020-05-19 | 茂硕电源科技股份有限公司 | Power factor correction circuit |
| CN111181377B (en) * | 2020-01-07 | 2021-04-30 | 茂硕电源科技股份有限公司 | Power factor correction circuit |
| CN114204796A (en) * | 2021-12-14 | 2022-03-18 | 杭州优特电源有限公司 | Bridgeless power factor correction circuit |
| CN114204796B (en) * | 2021-12-14 | 2023-09-26 | 杭州优特电源有限公司 | Bridgeless power factor correction circuit |
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