CN101355308B - Magnetic-integrated zero-voltage zero-current soft switch full bridge circuit - Google Patents
Magnetic-integrated zero-voltage zero-current soft switch full bridge circuit Download PDFInfo
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Abstract
The present invention relates to a magnetically integrated zero voltage zero current soft-switching full-bridge circuit. The circuit is characterized in that the circuit comprises an inverter, a magnetically integrated network, a rectifier, and an output filter capacitor (Co).The magnetically integrated network integrates a transformer function, an energy storage inductor function and an auxiliary inductor function for realizing soft-switching in a magnetic element. The magnetically integrated network also has various topology variation types to meet the requirements of different application occasions. The whole converter has only one magnetic element so that the number of the magnetic elements is largely reduced and the power density is improved. Furthermore, the zero voltage cutover of all primary switch tubes is realized by using exciting current without an additional auxiliary soft-switching network. A commutation diode at the secondary side can realize the zero current switching. The switching loss is largely reduced, and the switching frequency is improved. The circuit can adopt the phase-shifting control, and also can adopt the unsymmetrical PUM control, thereby having good theoretical research value and use value.
Description
Technical field
The invention belongs to the integrated magnetic field, be specifically related to the integrated zero-voltage zero-current soft switch full bridge circuit of a kind of magnetic.
Background technology
Generally, the volume of current transformer mainly is subjected to the restriction of magnetic cell, comprises transformer, inductance etc.Simultaneously, the volume of magnetic cell and number also will influence the cost and the efficient of current transformer.In recent years,, make that the volume and the number of magnetic cell all optimized in the circuit, and then reduced cost, reduced loss along with the proposition and the application of integrated magnetic.Adopt soft switch technique can reduce switching loss, raise the efficiency, reduce EMI, in general full-bridge circuit, realize zero voltage switch (ZVS) (US.Patent NO.6862195B2, OnMar.1,2005).In the phase whole-bridging circuit, for the switching device that makes leading arm and lagging leg can both be realized Zero-voltage soft switch work in full-load range, can on leading arm and lagging leg, respectively increase an inductance (L) electric capacity (C) auxiliary network (" Pseudo-resonant full bridge DC/DC converter ", IEEETransactions on Power Electronics, Volume6, Issue4).Though leading arm switch device can utilize load current to realize soft switch, under underloading or no-load condition, duty ratio is very little, still needs to add auxiliary network.Four magnetic cells are just arranged like this: transformer, energy storage inductor and two auxiliary inductions in this full-bridge circuit.Too much magnetic cell will increase volume, loss and the cost of circuit, reduces power density, and the efficient that influences supply unit improves.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide the integrated method of a kind of magnetic, simple in structure, efficient is high, magnetic cell is few, can realize that former limit switching device Zero-voltage soft in the full-load range opens the integrated zero-voltage zero-current soft switch full bridge circuit of magnetic with secondary rectifier diode Zero Current Switch.
The integrated zero-voltage zero-current soft switch full bridge circuit of magnetic comprises inverter, the magnetic integrated network, rectifier, output filter capacitor, described inverter circuit comprises first main switching device, second main switching device, the 3rd main switching device, the 4th main switching device, the source electrode of first main switching device is connected with the drain electrode of second main switching device, as port A, the source electrode of the 3rd main switching device is connected with the drain electrode of the 4th main switching device, as port B, the drain electrode of first main switching device is connected with the drain electrode of the 3rd main switching device, and be connected with the positive pole of input signal Vin, the source electrode of second main switching device is connected with the source electrode of the 4th main switching device, and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode, second diode, the negative electrode of first diode is connected with magnetic integrated network first output port, the anode of first diode is connected with the anode of second diode, an end of output filter capacitor, the negative pole of output signal Vo, and the negative electrode of second diode is connected with magnetic integrated network the 4th output port; Described magnetic integrated network is a five-port network, magnetic integrated network first input end mouth is connected with port A in the inverter, magnetic integrated network second input port is connected with the port B of inverter, the negative electrode of first diode in magnetic integrated network first output port and the rectifier is connected, magnetic integrated network second output port is connected with the other end of magnetic integrated network the 3rd output port, output filter capacitor, the positive pole of output signal Vo, and the negative electrode of second diode in magnetic integrated network the 4th output port and the rectifier is connected.
Described magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding; Former limit first winding, secondary first winding, secondary second winding is around on the outer magnetic post I, former limit second winding, the secondary tertiary winding, secondary the 4th winding is around on the outer magnetic post II, the end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
Described magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary the 5th winding, secondary the 6th winding.Former limit first winding is around on the outer magnetic post I, and former limit second winding is around on the outer magnetic post II, and secondary the 5th winding, secondary the 6th winding are around on the magnetic post of center.The end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the different name end of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary first winding is as magnetic integrated network second output port, the different name end of secondary second winding is as magnetic integrated network the 3rd output port, the end of the same name of secondary second winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the outer magnetic post I of described EE/EI magnetic core and outer magnetic post II have air gap.
Described magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, auxiliary winding, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding.Former limit first winding, secondary first winding, secondary second winding are around on the outer magnetic post I, and auxiliary winding is around on the magnetic post of center, and former limit second winding, the secondary tertiary winding, secondary the 4th winding are around on the outer magnetic post II.The end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, one end of auxiliary winding is connected with the different name end of former limit first winding, the other end of auxiliary winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
Described magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding, and the number of turn of former limit first winding is greater than the number of turn of former limit second winding; Former limit first winding, secondary first winding, secondary second winding is around on the outer magnetic post I, former limit second winding, the secondary tertiary winding, secondary the 4th winding is around on the outer magnetic post II, the end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
Described inverter circuit can adopt PWM phase shifting control, asymmetric PWM control or phase shift variable frequency control, and described rectifier circuit adopts centre tapped rectifier system, full-bridge rectification mode or voltage multiplying rectifier mode.
The beneficial effect that the present invention compared with prior art has:
1) the integrated zero-voltage zero-current soft switch full bridge circuit of magnetic of the present invention has only utilized a magnetic cell just to realize the function of four magnetic cells in the discrete component circuit, realized that the Zero-voltage soft of main switching device full-load range in the circuit opens the zero current work with rectifier diode, thereby reduced magnetic loss and switching loss, improved efficient and power density;
2) can on basis of the present invention, carry out change in topology, solve the shortcoming that leakage inductance is too small, leakage inductance is uncontrollable and the big electric current of leading arm switch device turn-offs respectively, to satisfy the demand of different application occasion;
3) the present invention can adopt the PWM phase shifting control, also can adopt asymmetric PWM control or phase shift variable frequency control, and secondary can adopt centre tapped rectifier system, also can adopt the multiple rectifier system of full-bridge rectification or voltage multiplying rectifier, has very big flexibility;
4) the present invention is simple in structure, is convenient to realize, changes flexibly, has very big theoretical research and practical value.
Description of drawings
Fig. 1 is the integrated zero-voltage zero-current soft switch full bridge circuit schematic diagram of magnetic;
Fig. 2 is the magnetic integrated network structural representation that only adopts a magnetic cell to realize of the present invention;
Fig. 3 of the present inventionly places structural representation on the center pillar with the secondary winding in the magnetic integrated network;
Fig. 4 is the structural representation that increases auxiliary winding on the center magnetic post in the magnetic integrated network of the present invention;
Fig. 5 is the structural representation of the number of turn of two former limit windings in the change magnetic integrated network of the present invention;
Fig. 6 is the ideal waveform that the present invention only adopts the magnetic integrated network circuit of a magnetic cell realization.
Embodiment
As shown in Figure 1, the integrated zero-voltage zero-current soft switch full bridge circuit of magnetic comprises inverter, magnetic integrated network, rectifier, output filter capacitor, described inverter circuit comprise first main switching device, second main switching device, the 3rd main switching device, the 4th main switching device; The source electrode of first main switching device is connected with the drain electrode of second main switching device, as port A, the source electrode of the 3rd main switching device is connected with the drain electrode of the 4th main switching device, as port B, the drain electrode of first main switching device is connected with the drain electrode of the 3rd main switching device, and be connected with the positive pole of input signal Vin, the source electrode of second main switching device is connected with the source electrode of the 4th main switching device, and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode, second diode, the negative electrode of first diode is connected with magnetic integrated network first output port, the anode of first diode is connected with the anode of second diode, an end of output filter capacitor, the negative pole of output signal Vo, and the negative electrode of second diode is connected with magnetic integrated network the 4th output port; Described magnetic integrated network is main contents of the present invention, it is a five-port network, except can adopting basic structure form shown in Figure 2, can also adopt the multiple different constructive variation of Fig. 3～Fig. 5, solved the shortcoming that leakage inductance is too small, leakage inductance is uncontrollable and the big electric current of leading arm switch device turn-offs respectively, to satisfy the demand of different application occasion.Magnetic integrated network first input end mouth is connected with port A in the inverter, magnetic integrated network second input port is connected with the port B of inverter, the negative electrode of first diode in magnetic integrated network first output port and the rectifier is connected, magnetic integrated network second output port and magnetic integrated network the 3rd output port, the other end of output filter capacitor, the positive pole of output signal Vo is connected, the negative electrode of second diode in magnetic integrated network the 4th output port and the rectifier is connected, described inverter circuit can adopt the PWM phase shifting control, asymmetric PWM control or phase shift variable frequency control, secondary can adopt centre tapped rectifier system, also can adopt the multiple rectifier system of full-bridge rectification or voltage multiplying rectifier.
As shown in Figure 2, basic structure form for the magnetic integrated network, this magnetic integrated network is integrated in a plurality of magnetic cells of transformer, energy storage inductor and auxiliary induction in the magnetic cell, must reduce the number of magnetic cell greatly, the former limit of transformer winding is simultaneously as auxiliary winding, form auxiliary network with auxiliary capacitor, can not realize that Zero-voltage soft is opened (ZVS) in the main switch full-load range thereby do not need to add auxiliary network, former limit energy storage inductor is provided by transformer leakage inductance.This circuit can work in CCM (inductive current continuous mode), BCM (critical flow Discontinuous Conduction mode), and three kinds of patterns of DCM (discontinuous mode), but be more suitable for working in DCM and BCM pattern.The magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding; Former limit first winding, secondary first winding, secondary second winding is around on the outer magnetic post I, former limit second winding, the secondary tertiary winding, secondary the 4th winding is around on the outer magnetic post II, the end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
As shown in Figure 3, the secondary winding in the magnetic integrated network is moved on the magnetic post of center, can simplify the secondary winding connection like this, increase leakage inductance (in the application scenario of the big energy storage inductor of needs).The magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary the 5th winding, secondary the 6th winding.Former limit first winding is around on the outer magnetic post I, and former limit second winding is around on the outer magnetic post II, and secondary the 5th winding, secondary the 6th winding are around on the magnetic post of center.The end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the different name end of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary first winding is as magnetic integrated network second output port, the different name end of secondary second winding is as magnetic integrated network the 3rd output port, the end of the same name of secondary second winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the outer magnetic post I of described EE/EI magnetic core and outer magnetic post II have air gap.
As shown in Figure 4, on the magnetic post of the center of magnetic integrated network, increase an auxiliary winding and with former limit windings in series, auxiliary winding is as former limit energy storage inductor, and inductance value can be regulated as required, has so just solved the uncontrollable shortcoming of size when only utilizing leakage inductance as energy storage inductor.The magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, auxiliary winding, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding.Former limit first winding, secondary first winding, secondary second winding are around on the outer magnetic post I, and auxiliary winding is around on the magnetic post of center, and former limit second winding, the secondary tertiary winding, secondary the 4th winding are around on the outer magnetic post II.The end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, one end of auxiliary winding is connected with the different name end of former limit first winding, the other end of auxiliary winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
As shown in Figure 5, increase the number of turn of limit, magnetic integrated network Central Plains first winding, reduce the number of turn of former limit second winding, the current i in first winding of former like this limit
T1Will be greater than the current i in second winding of former limit
T2So just, reduced the electric current that leading arm main switch flows through, thereby solved the shortcoming that the big electric current of leading arm main switch turn-offs, this circuit generally designs in being operated in DCM and BCM pattern, its electric current was always zero when the lagging leg main switch turn-offed, and the electric current that therefore increases the lagging leg main switch can not cause the increase of switching loss.The magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor, former limit first winding, former limit second winding, secondary first winding, secondary second winding, the secondary tertiary winding, secondary the 4th winding, and the number of turn of former limit first winding is greater than the number of turn of former limit second winding; Former limit first winding, secondary first winding, secondary second winding is around on the outer magnetic post I, former limit second winding, the secondary tertiary winding, secondary the 4th winding is around on the outer magnetic post II, the end of the same name of former limit first winding is as magnetic integrated network first input end mouth, the different name end of former limit second winding is as magnetic integrated network second input port, the end of the same name of secondary first winding is as magnetic integrated network first output port, the end of the same name of secondary second winding is as magnetic integrated network second output port, the different name end of the secondary tertiary winding is as magnetic integrated network the 3rd output port, the different name end of secondary the 4th winding is as magnetic integrated network the 4th output port, the different name end of former limit first winding and an end of auxiliary capacitor, the end of the same name of former limit second winding is connected, the other end ground connection of auxiliary capacitor, the different name end of secondary first winding is connected with the end of the same name of the secondary tertiary winding, the different name end of secondary second winding is connected with the end of the same name of secondary the 4th winding, and three magnetic posts of described EE/EI magnetic core have air gap.
Operation principle of the present invention is as follows:
The present invention includes inverter, magnetic integrated network, rectifier, output filter capacitor Co.The magnetic integrated network is a five-port network, can adopt the multiple different version of Fig. 2～Fig. 5.Here be example with magnetic integrated network shown in Figure 2, brief description operation principle of the present invention.Former limit first winding, former limit second winding are around in respectively on outer magnetic post I and the outer magnetic post II, these two groups of windings are except as the former limit of transformer, its magnetizing inductance can also be formed two LC auxiliary networks as auxiliary induction and auxiliary capacitor Cb, thereby utilizes exciting current to help leading arm and lagging leg main switching device to realize that no-voltage is open-minded respectively.Energy storage inductor is provided by the leakage inductance of transformer.In order to reduce magnetizing inductance, increase exciting current, to increase leakage inductance, three magnetic posts of this EE/EI magnetic core have air gap.
With reference to Fig. 6, the course of work in this circuit half period is as follows: when first main switching device, the 4th main switching device conducting, and second diode current flow, energy is transmitted to secondary in former limit.In the t=t1 moment, first main switching device turn-offs, and the 4th main switching device keeps conducting.i
T1Discharge and recharge for respectively the parasitic capacitance of leading arm first main switching device, second main switching device, in Dead Time, finish discharge, so that the second main switching device no-voltage conducting to the second main switching device parasitic capacitance.i
T1In comprise that load converts the electric current and the exciting current two parts on former limit.When underloading or zero load, though load current is very little or be zero, the exciting current in first winding of former limit reaches maximum constantly at t1, can help the parasitic capacitance of first main switching device, second main switching device to realize discharging and recharging in the dead band.The t=t2 moment, the second main switching device no-voltage conducting, former and deputy limit electric current all reduces under the effect of leakage inductance.During the DCM pattern, in the t=t3 moment, electric current drops to zero in the secondary winding, and output voltage is kept by output filter capacitor, but because the existence of exciting current, second main switching device and the 4th main switching device still are in conducting state.T=t4 constantly, the 4th main switching device turn-offs, exciting current in this moment former limit second winding reaches maximum, can help the parasitic capacitance of lagging leg the 4th main switching device, the 3rd main switching device to finish in the dead band and discharge and recharge, and it is open-minded to make the 3rd main switching device be achieved no-voltage.During the BCM pattern, just drop to zero up to t=t4 moment secondary current, same, this moment, the 4th main switching device turn-offed, and the exciting current in second winding of former limit is that the parasitic capacitance of lagging leg main switching device discharges and recharges.T=t5 the 3rd main switching device no-voltage conducting constantly.The working condition of half period and above similar repeats no more here in addition.
All circuit proposed by the invention, it is deduced naturally and changes combining form all within protection.
Claims (5)
1. zero-voltage zero-current soft switch full bridge circuit that magnetic is integrated, it is characterized in that comprising inverter, magnetic integrated network, rectifier, output filter capacitor (Co), described inverter circuit comprise first main switching device (Q1), second main switching device (Q2), the 3rd main switching device (Q3), the 4th main switching device
(Q4), the source electrode of first main switching device (Q1) is connected with the drain electrode of second main switching device (Q2), as port A, the source electrode of the 3rd main switching device (Q3) is connected with the drain electrode of the 4th main switching device (Q4), as port B, the drain electrode of first main switching device (Q1) is connected with the drain electrode of the 3rd main switching device (Q3), and be connected with the positive pole of input signal Vin, the source electrode of second main switching device (Q2) is connected with the source electrode of the 4th main switching device (Q4), and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode (D1), second diode (D2), the negative electrode of first diode (D1) is connected with magnetic integrated network first output port (3), the anode of first diode (D1) is connected with the anode of second diode (D2), an end of output filter capacitor (Co), the negative pole of output signal Vo, and the negative electrode of second diode (D2) is connected with magnetic integrated network the 4th output port (6); Described magnetic integrated network is a five-port network, magnetic integrated network first input end mouth (1) is connected with port A in the inverter, magnetic integrated network second input port (2) is connected with the port B of inverter, the negative electrode of first diode (D1) in magnetic integrated network first output port (3) and the rectifier is connected, magnetic integrated network second output port (4) and magnetic integrated network the 3rd output port (5), the other end of output filter capacitor (Co), the positive pole of output signal Vo is connected, and the negative electrode of second diode (D2) in magnetic integrated network the 4th output port (6) and the rectifier is connected; Described magnetic integrated network comprises EE/EI magnetic core, auxiliary capacitor (Cb), former limit first winding (Np1), former limit second winding (Np2), secondary first winding (Ns1), secondary second winding (Ns2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4); Former limit first winding (Np1), secondary first winding (Ns1), secondary second winding (Ns2) is around on the outer magnetic post I, former limit second winding (Np2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4) is around on the outer magnetic post II, the end of the same name of former limit first winding (Np1) is as magnetic integrated network first input end mouth (1), the different name end of former limit second winding (Np2) is as magnetic integrated network second input port (2), the end of the same name of secondary first winding (Ns1) is as magnetic integrated network first output port (3), the end of the same name of secondary second winding (Ns2) is as magnetic integrated network second output port (4), the different name end of the secondary tertiary winding (Ns3) is as magnetic integrated network the 3rd output port (5), the different name end of secondary the 4th winding (Ns4) is as magnetic integrated network the 4th output port (6), one end of the different name end of former limit first winding (Np1) and auxiliary capacitor (Cb), the end of the same name of former limit second winding (Np2) is connected, the other end ground connection of auxiliary capacitor (Cb), the different name end of secondary first winding (Ns1) is connected with the end of the same name of the secondary tertiary winding (Ns3), the different name end of secondary second winding (Ns2) is connected with the end of the same name of secondary the 4th winding (Ns4), and three magnetic posts of described EE/EI magnetic core have air gap.
2. zero-voltage zero-current soft switch full bridge circuit that magnetic is integrated, comprise inverter, the magnetic integrated network, rectifier, output filter capacitor (Co), described inverter circuit comprises first main switching device (Q1), second main switching device (Q2), the 3rd main switching device (Q3), the 4th main switching device (Q4), the source electrode of first main switching device (Q1) is connected with the drain electrode of second main switching device (Q2), as port A, the source electrode of the 3rd main switching device (Q3) is connected with the drain electrode of the 4th main switching device (Q4), as port B, the drain electrode of first main switching device (Q1) is connected with the drain electrode of the 3rd main switching device (Q3), and be connected with the positive pole of input signal Vin, the source electrode of second main switching device (Q2) is connected with the source electrode of the 4th main switching device (Q4), and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode (D1), second diode (D2), the negative electrode of first diode (D1) is connected with magnetic integrated network first output port (3), the anode of first diode (D1) is connected with the anode of second diode (D2), an end of output filter capacitor (Co), the negative pole of output signal Vo, and the negative electrode of second diode (D2) is connected with magnetic integrated network the 4th output port (6); Described magnetic integrated network is a five-port network, magnetic integrated network first input end mouth (1) is connected with port A in the inverter, magnetic integrated network second input port (2) is connected with the port B of inverter, the negative electrode of first diode (D1) in magnetic integrated network first output port (3) and the rectifier is connected, magnetic integrated network second output port (4) and magnetic integrated network the 3rd output port (5), the other end of output filter capacitor (Co), the positive pole of output signal Vo is connected, the negative electrode of second diode (D2) in magnetic integrated network the 4th output port (6) and the rectifier is connected, and it is characterized in that described magnetic integrated network comprises the EE/EI magnetic core, auxiliary capacitor (Cb), former limit first winding (Np1), former limit second winding (Np2), secondary the 5th winding (Ns5), secondary the 6th winding (Ns6); Former limit first winding (Np1) is around on the outer magnetic post I, former limit second winding (Np2) is around on the outer magnetic post II, secondary the 5th winding (Ns5), secondary the 6th winding (Ns6) is around on the magnetic post of center, the end of the same name of former limit first winding (Np1) is as magnetic integrated network first input end mouth (1), the different name end of former limit second winding (Np2) is as magnetic integrated network second input port (2), the different name end of secondary the 5th winding (Ns5) is as magnetic integrated network first output port (3), the end of the same name of secondary the 5th winding (Ns5) is as magnetic integrated network second output port (4), the different name end of secondary the 6th winding (Ns6) is as magnetic integrated network the 3rd output port (5), the end of the same name of secondary the 6th winding (Ns6) is as magnetic integrated network the 4th output port (6), one end of the different name end of former limit first winding (Np1) and auxiliary capacitor (Cb), the end of the same name of former limit second winding (Np2) is connected, the other end ground connection of auxiliary capacitor (Cb), the outer magnetic post 1 and the outer magnetic post II of described EE/EI magnetic core have air gap.
3. zero-voltage zero-current soft switch full bridge circuit that magnetic is integrated, comprise inverter, the magnetic integrated network, rectifier, output filter capacitor (Co), described inverter circuit comprises first main switching device (Q1), second main switching device (Q2), the 3rd main switching device (Q3), the 4th main switching device (Q4), the source electrode of first main switching device (Q1) is connected with the drain electrode of second main switching device (Q2), as port A, the source electrode of the 3rd main switching device (Q3) is connected with the drain electrode of the 4th main switching device (Q4), as port B, the drain electrode of first main switching device (Q1) is connected with the drain electrode of the 3rd main switching device (Q3), and be connected with the positive pole of input signal Vin, the source electrode of second main switching device (Q2) is connected with the source electrode of the 4th main switching device (Q4), and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode (D1), second diode (D2), the negative electrode of first diode (D1) is connected with magnetic integrated network first output port (3), the anode of first diode (D1) is connected second diode with the anode of second diode (D2), an end of output filter capacitor (Co), the negative pole of output signal Vo
(D2) negative electrode is connected with magnetic integrated network the 4th output port (6); Described magnetic integrated network is a five-port network, magnetic integrated network first input end mouth (1) is connected with port A in the inverter, magnetic integrated network second input port (2) is connected with the port B of inverter, the negative electrode of first diode (D1) in magnetic integrated network first output port (3) and the rectifier is connected, magnetic integrated network second output port (4) and magnetic integrated network the 3rd output port (5), the other end of output filter capacitor (Co), the positive pole of output signal Vo is connected, the negative electrode of second diode (D2) in magnetic integrated network the 4th output port (6) and the rectifier is connected, and it is characterized in that described magnetic integrated network comprises the EE/EI magnetic core, auxiliary capacitor (Cb), auxiliary winding, former limit first winding (Np1), former limit second winding (Np2), secondary first winding (Ns1), secondary second winding (Ns2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4); Former limit first winding (Np1), secondary first winding (Ns1), secondary second winding (Ns2) is around on the outer magnetic post I, auxiliary winding is around on the magnetic post of center, former limit second winding (Np2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4) is around on the outer magnetic post II, the end of the same name of former limit first winding (Np1) is as magnetic integrated network first input end mouth (1), the different name end of former limit second winding (Np2) is as magnetic integrated network second input port (2), the end of the same name of secondary first winding (Ns1) is as magnetic integrated network first output port (3), the end of the same name of secondary second winding (Ns2) is as magnetic integrated network second output port (4), the different name end of the secondary tertiary winding (Ns3) is as magnetic integrated network the 3rd output port (5), the different name end of secondary the 4th winding (Ns4) is as magnetic integrated network the 4th output port (6), one end of auxiliary winding is connected with the different name end of former limit first winding (Np1), the other end of auxiliary winding and an end of auxiliary capacitor (Cb), the end of the same name of former limit second winding (Np2) is connected, the other end ground connection of auxiliary capacitor (Cb), the different name end of secondary first winding (Ns1) is connected with the end of the same name of the secondary tertiary winding (Ns3), the different name end of secondary second winding (Ns2) is connected with the end of the same name of secondary the 4th winding (Ns4), and three magnetic posts of described EE/EI magnetic core have air gap.
4. zero-voltage zero-current soft switch full bridge circuit that magnetic is integrated, comprise inverter, the magnetic integrated network, rectifier, output filter capacitor (Co), described inverter circuit comprises first main switching device (Q1), second main switching device (Q2), the 3rd main switching device (Q3), the 4th main switching device (Q4), the source electrode of first main switching device (Q1) is connected with the drain electrode of second main switching device (Q2), as port A, the source electrode of the 3rd main switching device (Q3) is connected with the drain electrode of the 4th main switching device (Q4), as port B, the drain electrode of first main switching device (Q1) is connected with the drain electrode of the 3rd main switching device (Q3), and be connected with the positive pole of input signal Vin, the source electrode of second main switching device (Q2) is connected with the source electrode of the 4th main switching device (Q4), and is connected with the negative pole of input signal Vin; Described rectifier circuit comprises first diode (D1), second diode (D2), the negative electrode of first diode (D1) is connected with magnetic integrated network first output port (3), the anode of first diode (D1) is connected with the anode of second diode (D2), an end of output filter capacitor (Co), the negative pole of output signal Vo, and the negative electrode of second diode (D2) is connected with magnetic integrated network the 4th output port (6); Described magnetic integrated network is a five-port network, magnetic integrated network first input end mouth (1) is connected with port A in the inverter, magnetic integrated network second input port (2) is connected with the port B of inverter, the negative electrode of first diode (D1) in magnetic integrated network first output port (3) and the rectifier is connected, magnetic integrated network second output port (4) and magnetic integrated network the 3rd output port (5), the other end of output filter capacitor (Co), the positive pole of output signal Vo is connected, the negative electrode of second diode (D2) in magnetic integrated network the 4th output port (6) and the rectifier is connected, it is characterized in that described magnetic integrated network comprises the EE/EI magnetic core, auxiliary capacitor (Cb), former limit first winding (Np1), former limit second winding (Np2), secondary first winding (Ns1), secondary second winding (Ns2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4), the number of turn of former limit first winding (Np1) is greater than the number of turn of former limit second winding (Np2); Former limit first winding (Np1), secondary first winding (Ns1), secondary second winding (Ns2) is around on the outer magnetic post I, former limit second winding (Np2), the secondary tertiary winding (Ns3), secondary the 4th winding (Ns4) is around on the outer magnetic post II, the end of the same name of former limit first winding (Np1) is as magnetic integrated network first input end mouth (1), the different name end of former limit second winding (Np2) is as magnetic integrated network second input port (2), the end of the same name of secondary first winding (Ns1) is as magnetic integrated network first output port (3), the end of the same name of secondary second winding (Ns2) is as magnetic integrated network second output port (4), the different name end of the secondary tertiary winding (Ns3) is as magnetic integrated network the 3rd output port (5), the different name end of secondary the 4th winding (Ns4) is as magnetic integrated network the 4th output port (6), one end of the different name end of former limit first winding (Np1) and auxiliary capacitor (Cb), the end of the same name of former limit second winding (Np2) is connected, the other end ground connection of auxiliary capacitor (Cb), the different name end of secondary first winding (Ns1) is connected with the end of the same name of the secondary tertiary winding (Ns3), the different name end of secondary second winding (Ns2) is connected with the end of the same name of secondary the 4th winding (Ns4), and three magnetic posts of described EE/EI magnetic core have air gap.
5. according to claim 1,2, the integrated zero-voltage zero-current soft switch full bridge circuit of 3 or 4 described a kind of magnetic, it is characterized in that described inverter circuit adopts PWM phase shifting control, asymmetric PWM control or phase shift variable frequency control, described rectifier circuit adopts centre tapped rectifier system, full-bridge rectification mode or voltage multiplying rectifier mode.
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| CN101728968A (en) * | 2010-01-19 | 2010-06-09 | 华为技术有限公司 | Magnetic integration double-end converter |
| CN101860235B (en) * | 2010-05-04 | 2013-01-09 | 华为技术有限公司 | Magnetic integration transfer circuit system |
| CN101834518B (en) * | 2010-05-13 | 2012-10-10 | 深圳市核达中远通电源技术有限公司 | Mode switching control method and switching control circuit of full-bridge converter |
| CN101976966B (en) * | 2010-11-08 | 2012-07-25 | 永济新时速电机电器有限责任公司 | Novel auxiliary inverter power supply by using zero-current soft switch technology |
| CN103248212B (en) * | 2012-02-10 | 2015-05-20 | 美固电子(深圳)有限公司 | Output voltage turning-off control method and circuit of vehicle-mounted sine wave inverter |
| CN110365245B (en) * | 2018-03-26 | 2021-04-23 | 中车株洲电力机车研究所有限公司 | SVPWM control method, system and device for eliminating dead zone effect |
| KR102569566B1 (en) | 2018-07-18 | 2023-08-23 | 현대모비스 주식회사 | Low voltage dc-dc converter and driving method thereof |
| CN110634655B (en) | 2019-08-14 | 2021-05-14 | 华为技术有限公司 | Magnetic integrated device, power conversion circuit, charger and electric vehicle |
| CN112687454B (en) * | 2020-12-21 | 2022-08-09 | 中南大学 | Transformer magnetic integration structure integrating leakage inductance and excitation inductance and integration method thereof |
| CN115001285B (en) * | 2022-08-01 | 2022-11-04 | 银河航天(西安)科技有限公司 | Power conversion circuit and power conversion system |
| CN115833610B (en) * | 2023-02-09 | 2023-05-16 | 恩赛半导体(成都)有限公司 | Power supply conversion circuit and electronic device |
| CN116707275B (en) * | 2023-08-08 | 2023-11-17 | 恩赛半导体(成都)有限公司 | Auxiliary circuit, power supply system and electronic equipment |
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