CN101882865B - Power factor correction converter based on magnetic coupling lossless buffer circuit - Google Patents

Power factor correction converter based on magnetic coupling lossless buffer circuit Download PDF

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Publication number
CN101882865B
CN101882865B CN2010102179605A CN201010217960A CN101882865B CN 101882865 B CN101882865 B CN 101882865B CN 2010102179605 A CN2010102179605 A CN 2010102179605A CN 201010217960 A CN201010217960 A CN 201010217960A CN 101882865 B CN101882865 B CN 101882865B
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diode
buffer
inductance
capacitor
anode
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CN2010102179605A
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CN101882865A (en
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赵清林
杨秋霞
张建勇
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Yanshan University
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Yanshan University
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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
    • 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

Abstract

The invention relates to a power factor correction converter based on a magnetic coupling lossless buffer circuit, comprising a rectifier bridge and a boosted circuit, wherein the boosted circuit comprises a boosted inductor with an auxiliary coupling winding and a buffer network; one end of the boosted inductor is connected with a rectifier bridge common cathode, the other end of the boosted inductor is connected with one end of the coupling winding, and the other end of the coupling winding is connected with a first diode anode; a main switch and a buffer inductor are connected among the boosted inductor, a coupling winding contact and a rectifier bridge common anode, and the buffer inductor and a main switch contact are connected with a second diode anode; a buffer capacitor and a third diode are connected among the coupling winding, a first diode contact and the rectifier bridge common anode, and the buffer capacitor and a third diode cathode contact are connected with a fourth diode anode. The invention can suppress the reverse recovery of the diodes, reduce the switching loss and improve the conversion efficiency; the auxiliary coupling winding is used for resetting the electric current of the buffer inductor; and the buffer capacitor is used for absorbing the energy reversely recovered by the diodes and transmitting the energy into an output capacitor, therefore, the lossless buffering is realized.

Description

Power factor correcting converter based on magnetic coupling lossless buffer circuit
Technical field
The present invention relates to power factor correcting converter, especially can reduce the power factor correcting converter with lossless buffer circuit of diode reverse recovery loss.
Background technology
Present Simulating of Single Phase Power-Factor-Correction Converter as shown in Figure 1, it comprises the bridge rectifier DB that is made of four diodes, inductance L, master power switch S, diode D and output capacitance CO, one end of inductance L extremely is connected with the common cathode of rectification circuit, the other end is connected with the anode tap of diode D, access master power switch S between the common anode of the contact of inductance L and diode D and rectification circuit is extreme, access output capacitance CO between the common anode of the cathode terminal of diode D and rectification circuit is extreme, load RO is connected to the two ends of capacitor C O.Simulating of Single Phase Power-Factor-Correction Converter shown in Figure 1 is applied to the pre-stabilized voltage power supply of prime of global general-use input voltage, to realize power factor correction, when this converter works in the continuous current mode pattern, master power switch is operated in the hard switching state, there is serious reverse-recovery problems in diode when conducting, cause the turn-on consumption that power switch is larger, limited the raising of operating frequency, reduced the conversion efficiency of circuit.
Therefore, need to take measures the reverse-recovery problems of twin zener dioder, adopting passive buffer network is one of effective way that solves the diode reverse recovery problem.
Summary of the invention
The purpose of this invention is to provide a kind of global general-use input voltage that is applied to, the effective reverse-recovery problems of twin zener dioder, reduce switching loss, improve conversion efficiency, improve the power factor correcting converter based on magnetic coupling lossless buffer circuit of power supply reliability.
the technical scheme that converter of the present invention adopts is: converter comprises bridge rectifier and boost type translation circuit, described boost type translation circuit comprises a boost inductance with coupling winding, master power switch, buffer inductance, buffer capacitor, the first diode, the second diode, the 3rd diode, the 4th diode, the Same Name of Ends of boost inductance extremely is connected with the common cathode of bridge rectifier, the non-same polarity of boost inductance is connected with the Same Name of Ends of coupling winding, the non-same polarity of coupling winding is connected with the anode of the first diode, access master power switch and cushion inductive branch between the common anode of contact and the rectification circuit of boost inductance and the coupling winding that resets is extreme, buffer inductance is connected with the anode of the second diode with the contact of master power switch, access buffer capacitor and the 3rd diode between the contact of auxiliary coupling winding and the first diode and the common anode of rectification circuit are extreme, the anodic bonding of the contact of buffer capacitor and the 3rd diode cathode and the 4th diode, the first diode, the second diode, the negative electrode of the 3rd diode is connected with an end of output filter capacitor simultaneously, the other end of output filter capacitor extremely is connected with the common anode of bridge rectifier, load is connected to the two ends of output capacitance.
The first diode described in circuit of the present invention, the second diode, the 3rd diode, the 4th diode are fast recovery diode.
The invention has the beneficial effects as follows: connect with the master power switch branch road owing to having introduced buffer inductance, when opening, switch can effectively reduce the climbing of switch drain electric current, realize the zero current turning-on of switch, thereby effectively suppressed the reverse recovery of diode, reduce switching loss, improved transducer effciency.Auxiliary coupling winding is used for the switch off period, makes the buffer inductance current reset to zero, and for the switch zero current turning-on creates conditions, buffer capacitor is used for the reverse recovery energy of absorption diode, and is transferred to output capacitance.The present invention can be applicable to prime rectifying device and general voltage boosting dc converter in Switching Power Supply.
Description of drawings
Fig. 1 is existing Simulating of Single Phase Power-Factor-Correction Converter schematic diagram;
Fig. 2 is the power factor correcting converter schematic diagram based on magnetic coupling lossless buffer circuit of the present invention;
Fig. 3 is the working timing figure of circuit of the present invention in a switch periods;
Fig. 4 is the six kind working mode figures of circuit of the present invention in a switch periods.
Embodiment
Circuit of the present invention comprises diode bridge rectifier circuit and boost type translation circuit as shown in Figure 2, the rectifier circuit D that described bridge rectifier is comprised of four diodes B, described boost type translation circuit comprises that has an auxiliary coupling winding L 2Boost inductance L 1, master power switch S, buffer inductance L S, buffer capacitor C 1, the first diode D 1, the second diode D 2, the 3rd diode D 3, the 4th diode D 4, described boost inductance L 1Same Name of Ends and rectification circuit D BCommon cathode extremely connect, boost inductance L 1Non-same polarity, the coupling winding L 2Same Name of Ends and buffer inductance L SAn end link together, buffer inductance L SThe other end and rectification circuit D BCommon anode extreme between access master power switch S, buffer inductance L SBe connected the second diode D with the contact of master power switch S 2Anode, the coupling winding L 2Non-same polarity, the first diode D 1Anode and buffer capacitor C 1An end link together, buffer capacitor C 1The other end and the 3rd diode D 3Negative electrode and the 4th diode D 4Anodic bonding, the first diode D 1, the second diode D 2, the 4th diode D 4Negative electrode simultaneously and output filter capacitor C oAn end connect, output filter capacitor C oThe other end, the 3rd diode D 3Anode, source electrode and the bridge rectifier D of master power switch S BCommon anode extremely link together.The first diode D described in circuit of the present invention 1, the second diode D 2, the 3rd diode D 3With the 4th diode D 4Be fast recovery diode.
With input voltage V inBeing in positive half cycle is example, the work schedule of described nondestructive buffering power factor correcting converter in a switch periods as a of Fig. 3 to as shown in k.Fig. 3 (a) is the oscillogram of the gate drive voltage of power switch tube S; Fig. 3 (b) is the drain electrode of power switch tube S and the voltage oscillogram between source electrode; Fig. 3 (c) is buffer inductance L SThe voltage oscillogram that bear at two ends; Fig. 3 (d) is boost inductance L 1Current waveform figure; Fig. 3 (e) is buffer capacitor C 1The voltage oscillogram at two ends; Fig. 3 (f) is buffer inductance L SThe current waveform figure that flows through; Fig. 3 (g) is the current waveform figure of power switch tube S drain electrode; Fig. 3 (h) is for flowing through the first diode D 1Current waveform figure; Fig. 3 (i) is for flowing through the second diode D 2Current waveform figure; Fig. 3 (j) is for flowing through the 3rd diode D 3Current waveform figure; Fig. 3 (k) is for flowing through the 4th diode D 4Current waveform figure.Can find out from above figure:
Fig. 3 has six kinds of operation modes in a switch periods, as shown in Figure 4.
Mode 1 (t0-t1) Fig. 4 (a): when t＜t0, master power switch pipe S turn-offs.At t0 constantly, open master power switch S.In this period, output voltage V o substantially all is applied to buffer inductance L STwo ends, the drain current of master power switch S and inductance L SElectric current linear increasing simultaneously, the first diode D 1The electric current linearity reduce; Work as L SCurrent i LsReach boost inductance L 1Current i L1The time, the first diode D 1Current i D1Be reduced to zero, due to diode D 1There is reversely restoring process, so under the effect of output voltage, L SCurrent i LsContinuing increases, diode D 1Current i D1Become negative, and increase in the other direction; To t1 constantly, diode D 1Reversely restoring process finishes, its current i D1Be reduced at once zero, at this moment the current i of buffer inductance LsEqual the boost inductance current i L1With diode D 1Reverse recovery current peak value sum.Due to buffer inductance L SEffect, diode D 1The electric current descending slope greatly reduce, thereby effectively suppressed the peak value of reverse recovery current.
Mode 2 (t1-t2) Fig. 4 (b): at t1 constantly, the first diode D 1Oppositely recover to finish buffer inductance L SThe middle reverse recovery energy that has stored diode, at this moment, L SElectric current greater than boost inductance L 1Electric current, therefore, the 3rd diode D 3Conducting, buffer inductance L SWith buffer capacitor C 1Beginning resonance, buffer inductance L SElectric current descend, buffer capacitor C 1Voltage raise.As buffer inductance L SElectric current drop to and equal boost inductance L 1Electric current the time, resonant process finishes, the 3rd diode D 3Electric current reduce to zero.
Mode 3 (t2-t3) Fig. 4 (c): the t2 moment, buffer inductance L SWith diode D 1Reverse recovery energy transfer to buffer capacitor C 1On, simultaneously, capacitor C 1Can also clamp diode D 1The voltage at two ends.In this period, alternating current input power supplying is to boost inductance L 1Storage power, current i L1Linearity increases and lasts till that t3 constantly.
Mode 4 (t3-t4) Fig. 4 (d): at t3 constantly, master power switch S turn-offs, the second diode D 2Conducting, the electric current of switch S is transferred to diode D at once 2On, simultaneously, the coupling winding L 2Two ends can produce induced potential V L2At V L2And V C1Effect under, buffer inductance L SThe electric current linearity reduce, the 4th diode D 4Linear the increasing of electric current, capacitor C 1Voltage drop, will be stored in C 1In reverse recovery Energy Transfer to load.
Mode 5 (t4-t5) Fig. 4 (e): to t4 constantly, capacitor C 1Voltage drop to zero, diode D 4Cut-off, D 1Conducting, diode D 4Electric current transfer at once diode D 1On.Buffer inductance L SElectric current the coupling winding L 2The induced potential effect under continue to reduce, diode D 1Electric current continue to increase.
Mode 6 (t5-t6) Fig. 4 (f): to t5 constantly, buffer inductance L SElectric current the coupling winding L 2The induced potential effect under all transfer to inductance L 2On, L SCurrent reset to zero, be next switch periods twin zener dioder D 1Reverse recovery and realize that the zero current turning-on of power switch S is ready.
By the analysis based on the power factor correcting converter of magnetic coupling lossless buffer circuit given to this paper, can find out that circuit has following characteristics:
Circuit working is at continuous current mode, and when master power switch was opened, under the effect of buffer inductance, the current changing rate of main diode reduced greatly, thereby has reduced reverse recovery loss; Buffer capacitor can store reverse recovery energy, and with this part Energy Transfer to load, thereby improve conversion efficiency; Buffer capacitor can also clamper master diode the voltage at two ends, reduce the voltage stress of diode; The effect of coupling winding is to produce an induced potential at the power switch blocking interval, under the effect of this induced potential, make the buffer inductance electric current at switch blocking interval reset-to-zero, for next switch periods twin zener dioder oppositely recovers and realizes that the power switch zero current turning-on is ready.The present invention is mainly used in the circuit of power factor correction under continuous current mode.

Claims (2)

1. based on the power factor correcting converter of magnetic coupling lossless buffer circuit, comprise diode bridge rectifier circuit and boost type translation circuit, the rectifier circuit that described bridge rectifier is comprised of four diodes (DB), described boost type translation circuit comprises a boost inductance (L1) with auxiliary coupling winding (L2), master power switch (S), the first diode (D1), buffer inductance (LS), the second diode (D2), buffer capacitor (C1), the 3rd diode (D3), the 4th diode (D4), output filter capacitor (CO), load (RO) is connected to output filter capacitor (CO) two ends, the auxiliary coupling winding (L2) of described boost inductance (L1) is as the reset winding (L2) of buffer inductance (LS) electric current, it is characterized in that: the common cathode of the Same Name of Ends connection bridge rectifier (DB) of boost inductance (L1) is extreme, the non-same polarity of boost inductance (L1) connects the Same Name of Ends of its coupling winding (L2), and connect simultaneously an end of buffer inductance (LS), the non-same polarity of reset winding (L2) connects the anode of the first diode (D1), and connect simultaneously an end of buffer capacitor (C1), the other end of buffer inductance (LS) connects the drain electrode of master power switch (S), and connect simultaneously the anode of the second diode (D2), the anodic bonding of the negative electrode of the other end of buffer capacitor (C1) and the 3rd diode (D3) and the 4th diode (D4), the first diode (D1), the second diode (D2), the negative electrode of the 4th diode (D4) links together, and connect simultaneously an end of output filter capacitor (CO), the other end of output filter capacitor (CO), the anode of the 3rd diode (D3), the common anode of the source electrode of master power switch (S) and bridge rectifier (DB) extremely links together.
2. the power factor correcting converter based on magnetic coupling lossless buffer circuit according to claim 1, it is characterized in that: described buffer inductance (LS) is the inductance be used to the zero current turning-on of realizing switch and twin zener dioder reverse recovery current, buffer capacitor (C1) is oppositely to recover the electric capacity of energy for absorption diode, and the auxiliary coupling winding (L2) of boost inductance is the current reset winding of buffer inductance.
CN2010102179605A 2010-07-01 2010-07-01 Power factor correction converter based on magnetic coupling lossless buffer circuit Expired - Fee Related CN101882865B (en)

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JP2012178952A (en) * 2011-02-28 2012-09-13 Sanken Electric Co Ltd Switching power supply circuit
CN107785874B (en) * 2016-08-30 2022-05-10 中兴通讯股份有限公司 Power supply protection method, device and circuit
CN110212750A (en) * 2019-06-28 2019-09-06 全天自动化能源科技（东莞）有限公司 A kind of circuit of the Lossless Snubber of active PFC circuit
CN110224584A (en) * 2019-07-03 2019-09-10 广东美的制冷设备有限公司 Household appliance and its passive power factor correcting circuit

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CN1897439A (en) * 2006-06-30 2007-01-17 南京航空航天大学 ZCS-PWM switching unit circuit

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US6987675B2 (en) * 2003-05-23 2006-01-17 Delta Electronics, Inc. Soft-switched power converters

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Publication number Priority date Publication date Assignee Title
CN1897439A (en) * 2006-06-30 2007-01-17 南京航空航天大学 ZCS-PWM switching unit circuit

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