CN108512430A - A kind of three Port Translation device of ZVZCS full-bridges and its control method - Google Patents
A kind of three Port Translation device of ZVZCS full-bridges and its control method Download PDFInfo
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- CN108512430A CN108512430A CN201810233707.5A CN201810233707A CN108512430A CN 108512430 A CN108512430 A CN 108512430A CN 201810233707 A CN201810233707 A CN 201810233707A CN 108512430 A CN108512430 A CN 108512430A
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a kind of three Port Translation device of ZVZCS full-bridges and its control methods, belong to the technical field of converters.The converter is made of transformer, primary circuit, secondary circuit, by adjusting the duty ratio of four power switch tubes of primary circuit, can be achieved at the same time the power management and control of three ports of converter.The present invention realizes the multiplexing of primary side switch pipe, reduces the quantity of switching tube, power density is improved by the way that the full-bridge converter of the buck boost converters of non-isolation type and isolated form to be integrated together；Simultaneously in full-bridge converter lagging leg two diodes of series connection, one parasitic diode of leading-bridge paralleled power switches and junction capacity, so that leading-bridge switching tube realizes that no-voltage is open-minded, lagging leg realizes zero-current switching, four switching tubes can realize Sofe Switch, reduce switching loss, to realize the high frequency of power conversion device.The present invention is suitable for the systems such as generation of electricity by new energy, energy storage and electric vehicle power supply.
Description
Technical field
The present invention relates to the technical field of converters, especially a kind of three Port Translation device of ZVZCS full-bridges and
Its control method is mainly used in generation of electricity by new energy, energy storage and electric vehicle power supply system.
Background technology
The increasingly exhausted and people of earth resource so that grid-connected power generation system is more next to the extensive concern of environmental problem
It is more important.Currently, photovoltaic generation and wind-power electricity generation are to apply more two kinds, still, new energy in renewable energy power generation form
There are following some intrinsic defects for source generating equipment：For generating equipment output power by environmental influence, output power is random
Variation and it is discontinuous, unstable, therefore new energy equipment can not independently, stablize, reliably to output resistance power.For
This, generally requires a variety of new energy and other energy and energy storage device being combined together to form regenerative resource joint power supply
System obtains relatively stable, continuous electric energy, such as photovoltaic-accumulator joint power supply system using the complementarity between them
System is exactly a kind of selection well, due to the addition of secondary battery unit, can not only improve the stability of system, can also realize
The efficient utilization of energy.
It powers to output resistance to make multiple input power supply combine, needs to use converter as interface, connection power generation is single
Member, energy-storage units and output resistance port.In new energy system, due to needing simultaneously to the defeated of new energy equipment
The charge and discharge control power and power supply output resistance power for going out the energy storage devices such as power, accumulator are carried out at the same time management and control
System, it usually needs power management and control system are constituted using the combination of multiple two-port converters, however due to converter number
More, each converter time-sharing work, system power-density is low, volume weight is big, of high cost, and since each converter divides each other
It dissipates control and respectively works independently, damage systematic steady state and dynamic property.The converter of this structure is containing more power conversion
Unit, it is complicated；And often increase a port and be increased by a power converter cell, system cost is higher；Also, with
The increase of converter and control circuit quantity, the reliability of system reduces.
According to foregoing teachings it is found that in DC-DC converter, it can be replaced with three port DC-DC converters original more
A Two-port netwerk DC-DC converters realize the merging of converter topology and function, form novel new energy distributed power generation system
System.But there are also disadvantages from the point of view of existing three port topology, for example there is switching tube quantity, and more, switching tube loss increases
Greatly, the problems such as transformer winding structure is complicated the drawbacks of for traditional structure, is highly desirable to propose that structure is more succinct, have
The novel V-i Characteristics of high efficiency and high power density topology.
Invention content
For the insufficient problem of above-mentioned background technology, the advantages of the multiplexing of combined circuit element and Sofe Switch, mesh of the invention
Be to provide a kind of three Port Translation device of ZVZCS full-bridges and its control method.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions：
A kind of three Port Translation device of ZVZCS full-bridges, which be made of primary circuit, secondary circuit and transformer；It is described
Transformer includes primary side winding and vice-side winding；The primary circuit include accumulator, input source, the first inductance, capacitance,
Leakage inductance, first to fourth switching tube, first to fourth diode, the first capacitance, the second capacitance；Wherein, first switch pipe,
Two switching tubes, third switching tube and the 4th switching tube constitute full bridge unit, the leakage of the source electrode and second switch pipe of first switch pipe
Pole connects, and constitutes the preceding bridge arm of full bridge unit, and the source electrode of third switching tube is connect with the drain electrode of the 4th switching tube, constitutes full-bridge list
The rear bridge arm of member, former and later two bridge arms are connected in parallel；First diode is connected in parallel with the first capacitance, first switch pipe；Second
Diode is connected in parallel with the second capacitance, second switch pipe；
The anode of the input source connects one end of first inductance, the other end of first inductance and preceding bridge arm common end
Connection, the preceding bridge arm common end are connect with one end of the capacitance, and the other end of the capacitance connects leakage inductance
One end, the other end of the leakage inductance connects the primary side winding Same Name of Ends；The primary side winding non-same polarity is opened with third
Close the source electrode connection of pipe；
After the cathode of the input source and the cathode of accumulator are connected in parallel, it is separately connected the source electrode and of the second switch pipe
The source electrode of four switching tubes, the anode of the accumulator are separately connected the sun of the drain electrode and third diode of the first switch pipe
Pole, the drain electrode of the cathode connection third switching tube of third diode, the source electrode of third switching tube connect the anode of the 4th diode,
The cathode of 4th diode connects the drain electrode of the 4th switching tube；
The secondary circuit exports rectifier diode including the first output rectifier diode, second, third exports rectifier diode,
4th output rectifier diode, outputting inductance, output capacitance, output resistance；The anode and second of first output rectifier diode
The cathode connection of rectifier diode is exported, the cathode for the anode and the 4th output rectifier diode that third exports rectifier diode connects
It connects, the cathode of the first output rectifier diode is connect with third output rectifier diode cathode, the second output rectifier diode
Anode is connect with the 4th output rectifier diode anode, and output capacitance and output resistance are connected in parallel, and the anode of output capacitance is even
It is connected to one end of outputting inductance, cathode is separately connected the anode of the second output rectifier diode, the 4th output rectifier diode
Anode；The other end of the outputting inductance is separately connected the cathode of the first output rectifier diode, third output rectifier diode
Cathode；
The vice-side winding Same Name of Ends is connect with the anode of the first output rectifier diode；The vice-side winding non-same polarity and
The anode connection of three output rectifier diodes.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, content are as follows：If the first switch pipe
Duty ratio be D1, then the duty ratio of the second switch pipe is 1-D1；If the duty ratio of the third switching tube is D2, then institute
The duty ratio for stating the 4th switching tube is 1-D2, the opening of the second switch pipe be ahead of constantly the third switching tube when
Between be less than half period, the time that the opening of the first switch pipe is ahead of the 4th switching tube constantly is less than half week
Phase；The duty ratio for adjusting four power switch tubes of primary circuit, can realize the power management and control of three ports of converter,
Change the second switch pipe and the third switching tube opens difference control output end mouthful voltage between the moment, makes converter
Realize Sofe Switch function.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, first to fourth switching tube have phase
Same switching frequency.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, the first switch pipe are opened with described second
Pipe complementation conducting is closed, the third switching tube is connected with the 4th switching tube complementation.
The features of the present invention and technique effect：
(1) by integrating a buck-boost circuit and full-bridge circuit, three port DC-DC transformation is constituted
Device realizes the multiplexing of switching tube, reduces the quantity of switching tube, improves the power density of converter；
(2) output resistance RoWith input source UinAnd accumulator UbElectrical isolation is adapted to different output resistances and application scenario
Application demand；
(3) input source UinAnd accumulator UbIt may be used while to output resistance RoPower supply, accumulator can also be used independent to
Output resistance RoPower supply, therefore, be effective to ensure that it is continuous, steady, reliably to output resistance RoPower supply；
(4) entire converter realizes significantly more efficient management as an entirety using centralized control；
(5) the switching device quantity that the present invention uses is few, and leading-bridge realizes that zero voltage turn-off, lagging leg realize that zero current closes
It is disconnected, and control is simple, reliability is high, at low cost, and suitable for grid-connected power generation system and energy-storage system.
Description of the drawings
Fig. 1 is three Port Translation device main circuit structure schematic diagram of ZVZCS full-bridges of the present invention.
Fig. 2 is three Port Translation device drive signal of ZVZCS full-bridges of the present invention and main oscillogram.
Fig. 3（a）To Fig. 3（e）Each stage equivalent circuit diagram of three Port Translation device of ZVZCS full-bridges respectively of the present invention.
Fig. 4 is three Port Translation device of ZVZCS full-bridges of the present invention in photovoltaic input source-accumulator joint power supply system, three
The working state figure of kind pattern.
Figure label meaning：T is transformer, UbIt is accumulator, UinIt is input source, S1~S4It is first to fourth switch
Pipe, L1It is the first inductance, LoIt is outputting inductance, LkIt is leakage inductance, C1It is the first capacitance, C2It is the second capacitance, CbIt is capacitance,
CoIt is filter capacitor, D1~D4It is first to fourth rectifier diode, Do1~Do4It is first to fourth output rectifier diode, U0
It is output voltage, NPIt is primary side winding, NsIt is vice-side winding, RoIt is output resistance, iL1It is the electric current of the first inductance, ipIt is primary side
The electric current of winding, iL0It is the electric current of outputting inductance, ugs1、ugs2、ugs3、ugs4It is first to fourth switching tube S respectively1~S4's
Driving voltage, UABIt is the voltage of bridge arm common point A and B point-to-point transmission.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, the present invention is made of primary circuit, secondary circuit and transformer, the transformer include primary side winding and
Vice-side winding；
The primary circuit includes accumulator Ub, input source Uin, the first inductance L1, capacitance Cb, leakage inductance Lk, first to
Four switching tube S1~S4, first to fourth diode D1~D4, the first capacitance C1, the second capacitance C2；Wherein, first switch pipe S1、
Second switch pipe S2, third switching tube S3With the 4th switching tube S4Constitute full bridge unit, first switch pipe S1Source electrode opened with second
Close pipe S2Drain electrode connection, constitute the preceding bridge arm of full bridge unit, third switching tube S3Source electrode and the 4th switching tube S4Drain electrode connect
It connects, constitutes the rear bridge arm of full bridge unit, former and later two bridge arms are connected in parallel；First diode D1With the first capacitance C1, first switch
Pipe S1It is connected in parallel；Second diode D2With the second capacitance C2, second switch pipe S2It is connected in parallel；
The input source UinAnode connect the first inductance L1One end, the first inductance L1The other end and preceding bridge arm
Common end connects, the preceding bridge arm common end and the capacitance CbOne end connection, the capacitance CbThe other end connect
Meet leakage inductance LkOne end, the leakage inductance LkThe other end connects the primary side winding Same Name of Ends；The primary side winding non-same polarity
With third switching tube S3Source electrode connection；
The input source UinCathode and accumulator UbCathode be connected in parallel after, be separately connected the second switch pipe S2Source
Pole and the 4th switching tube S4Source electrode, the accumulator UbAnode be separately connected the first switch pipe S1Drain electrode and third
Diode D3Anode, third diode D3Cathode connection third switching tube S3Drain electrode, third switching tube S3Source electrode connection
4th diode D4Anode, the 4th diode D4Cathode connect the 4th switching tube S4Drain electrode；
The secondary circuit includes the first output rectifier diode Do1, the second output rectifier diode Do2, third export rectification two
Pole pipe Do3, the 4th output rectifier diode Do4, outputting inductance Lo, output capacitance Co, output resistance Ro；First two pole of output rectification
Pipe Do1Anode and the second output rectifier diode Do2Cathode connection, third exports rectifier diode Do3Anode and the 4th
Export rectifier diode Do4Cathode connection, the first output rectifier diode Do1Cathode and third output rectifier diode Do3
Cathode connects, the second output rectifier diode Do2Anode and the 4th output rectifier diode Do4Anode connects, output capacitance Co
And output resistance RoIt is connected in parallel, output capacitance CoAnode be connected to outputting inductance LoOne end, it is defeated that cathode is separately connected second
Go out rectifier diode Do2Anode, the 4th output rectifier diode Do4Anode；The outputting inductance LoThe other end connect respectively
Meet the first output rectifier diode Do1Cathode, third output rectifier diode Do3Cathode；
The vice-side winding Same Name of Ends and the first output rectifier diode Do1Anode connection；The vice-side winding non-same polarity
With third output rectifier diode Do3Anode connection.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, content are as follows：If the first switch pipe
S1Duty ratio be D1, then the second switch pipe S2Duty ratio be 1-D1；If the third switching tube S3Duty ratio be D2,
Then the 4th switching tube S4Duty ratio be 1-D2, the second switch pipe S2Open and be ahead of third switch constantly
Pipe S3Time be less than half period, the first switch pipe S1Open and be ahead of the 4th switching tube S constantly4Time
Less than half period；Adjust four power switch tube Ss of primary circuit1~S4Duty ratio, can realize three ports of converter
Power management and control, change the second switch pipe S2With the third switching tube S3Open the difference control between the moment
Output port voltage U0, converter is made to realize Sofe Switch function.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, the first to fourth switching tube S1~S4
Switching frequency having the same.
The control method of three Port Translation device of ZVZCS full-bridges of the present invention, the first switch pipe S1With described second
Switching tube S2Complementation conducting, the third switching tube S3With the 4th switching tube S4Complementation conducting.
With reference to Fig. 2, Fig. 3（a）To Fig. 3（e）And Fig. 4 is to the tool of the three Port Translation device of ZVZCS full-bridges of the present invention
Body running process is made a concrete analysis of.
As shown in figure 4, the present invention is to output resistance RoThere are three types of powering modes：1, such as in Fig. 4（a）, single input list is defeated
Go out pattern, accumulator UbIndividually to output resistance RoPower supply.2, such as in Fig. 4（b）, dual output pattern, input source UinAnd electric power storage
Pond UbSimultaneously to output resistance RoPower supply, at this point, accumulator UbAs system power balancing equipment, for storing input source UinIt is defeated
The surplus power that enters, supplement output resistance RoRequired deficit power, to ensure that system is continuous, steady, reliably electric to output
Hinder RoPower supply；3, such as in Fig. 4（c）, dual input pattern, input source UinWith accumulator UbSimultaneously to output resistance RoPower supply, input
Source UinThere is no surplus power to be stored in accumulator UbIn.
The operation principle of the present invention is described further below by a specific embodiment.
Assuming that the switching frequency of the converter is 100kHz, the primary side winding N of transformer TP, vice-side winding NSTurn ratio
Meet NP∶ NS=1: n, n are positive number；Assume filter capacitor C simultaneouslyoWith capacitance CbIt is sufficiently large, output resistance RoBoth ends
Voltage be output voltage Uo, capacitance CbBoth end voltage is UCb, all switching tubes, diode, inductance, capacitance are all reason
Think device, capacitance CbIt is sufficiently large.Then in Fig. 4（b）Shown powering mode, dual output pattern, that is, input source UinAnd electric power storage
Pond UbSimultaneously to output resistance RoIn case of when power supply.
As shown in Fig. 2, since the three Port Translation device of ZVZCS full-bridges of the present invention shares eight kinds in a switch periods
Possible operation mode analyzes first four operation mode, the present invention is in each work herein due to the symmetry of phase shifting control
The operation principle made under mode is as follows：
Mode 0：
Such as Fig. 3（a）It is shown：In t0Moment, switch S1、S4Conducting, switch S2、S3Shutdown.Former and deputy side current loop such as Fig. 3 (a)
It is shown, wherein inductance L1Start to discharge, the voltage u at both endsL1=Uin-Ub；Primary current iPGive capacitance CbCharging.Filter inductance
Electric current iLoLinear to increase, this mode terminates.
Mode 1：
Such as Fig. 3（b）It is shown, mode 1（t0, t1）：In t1Moment, switch S2、S4Conducting, switch S1、S3Shutdown.As switching tube S1It closes
It closes, switching tube S2When not opening, capacitance C1It is charging, capacitance C2It is discharging；Switch S at this time2、S4Conducting, the voltage of A, B point-to-point transmission
UABEqual to zero, switching tube S1Zero voltage turn-off, switching tube S2No-voltage is open-minded.Inductance L1Charging, the voltage u at both endsL1=Uin.This
When primary side winding on electric current iPStart to reduce, four rectifier diodes of transformer secondary simultaneously turn on, filter inductance Lo electric currents
Linear to reduce, this mode terminates.
Mode 2：
Such as Fig. 3（c）It is shown, mode 2（t1, t2）：In t1Moment, switch S2、S4Conducting, switch S1、S3Shutdown.Inductance L1Charging,
The voltage u at both endsL1=Uin；Primary current iPIt is reduced to zero, is applied to the capacitance C of transformer primary side windingbVoltage be
UCb, the primary side winding voltage u of transformerp=UCb.Four, secondary side rectifier diode simultaneously turns on, and filter inductance Lo electric currents linearly subtract
Small, this mode terminates.
Mode 3：
Such as Fig. 3（d）It is shown, mode 3（t2, t3）：In t2Moment, switch S2、S3Conducting, switch S1、S4Shutdown.It is former in mode 2
Side electric current iPIt has been reduced to zero, at this time S4In there is no electric currents to flow through, therefore S4It is zero-current switching.After the delay of very little,
Open S3, due to the presence of leakage inductance, iPIt cannot be mutated, so S3It is zero current turning-on.Due to iPIt is not enough to provide output resistance Ro
Electric current, four, secondary side rectifier diode still simultaneously turns on, and former vice-side winding voltage is zero.Leakage inductance both end voltage is U at this timein
+UCb, primary current iPIt is linearly increasing to start negative direction, inductance L1Continue to charge, the voltage u at both endsL1=Uin.Transformer secondary is filtered
Wave inductance LoElectric current still linearly reduces, this mode terminates, this mode terminates.
Mode 4：
Such as Fig. 3（e）It is shown, mode 4（t3, t4）：In t3Moment, switch S2、S3Conducting, switch S1、S4Shutdown.Primary side is output electricity
Hinder RoEnergy is provided, while being charged to capacitance negative direction.Due to secondary side output rectifier diode Do1And Do4It bears reversed inclined
Pressure, so Do1And Do4Naturally it turns off.Inductance L1Continue to charge, the voltage u at both endsL1=Uin.Filter inductance electric current iLoCirculation completely
Diode Do2And Do3, transformer secondary inductance L at this timeoElectric current iLoStart linearly increasing, this mode terminates.
Voltage on capacitance is switching tube S next time3Zero-current switching and switching tube S4Zero current turning-on does standard
It is standby.In t4Moment, on-off switching tube S2, start another half period（t4, t8）, working condition is similar to described above（t0,
t4）.
According to above-mentioned analysis it is found that by the way that the full-bridge of the buck-boost converters of non-isolation type and isolated form is converted
Device is integrated together, and realizes the multiplexing of primary side switch pipe, is reduced the quantity of switching tube, is reduced cost.First switch pipe
S1With second switch pipe S2It can realize that no-voltage turns on and off, third switching tube S3With the 4th switching tube S4It can realize zero current
It turns on and off, four switching tubes can realize Sofe Switch, reduce switching loss, improve inverter power density and reliable
Property.Three Port Translation device of ZVZCS full-bridges of the present invention, can by the duty ratio of adjusting four power switch tubes of primary circuit
The power management and control of three ports of converter are realized simultaneously.
Further, it is assumed that switch periods Ts, by second switch pipe S2Moment definition of opening be switch periods
Initial time.As battery tension UbThink constant, adjusts second switching tube S2Duty ratio input source U may be implementedinIt is defeated
Enter the control of voltage.For the application scenario that input source is new energy equipment, by controlling the input voltage of input source just
Its power can be controlled, and then may be implemented to accumulator UbThe control of charge-discharge electric power.Output voltage Uo then can be further
By adjusting second switch pipe S2With third switching tube S3The time interval for opening the moment further realizes adjusting, to sum up controlling party
From the point of view of method, three Port Translation device of ZVZCS full-bridges of the invention can be achieved at the same time the power of input source, accumulator and output resistance
Management and control.
Specific embodiments described above has carried out further the purpose of the present invention, technical solution and advantageous effect
Detailed description be not limited to this hair it should be understood that the foregoing is merely specific embodiments of the present invention
Bright range, any those skilled in the art, that is made under the premise of not departing from design and the principle of the present invention is equal
Variation and modification, should all belong to the scope of protection of the invention.
Claims (4)
1. a kind of three Port Translation device of ZVZCS full-bridges, is made of primary circuit, secondary circuit and transformer；The transformer packet
Include primary side winding and vice-side winding；It is characterized in that：
The primary circuit include accumulator, input source, the first inductance, capacitance, leakage inductance, first to fourth switching tube,
First to fourth diode, the first capacitance, the second capacitance；Wherein, first switch pipe, second switch pipe, third switching tube and
Four switching tubes constitute full bridge unit, and the source electrode of first switch pipe is connect with the drain electrode of second switch pipe, before constituting full bridge unit
Bridge arm, the source electrode of third switching tube are connect with the drain electrode of the 4th switching tube, constitute the rear bridge arm of full bridge unit, former and later two bridges
Arm is connected in parallel；First diode is connected in parallel with the first capacitance, first switch pipe；Second diode and the second capacitance, second
Paralleled power switches connect；
The anode of the input source connects one end of first inductance, the other end of first inductance and preceding bridge arm common end
Connection, the preceding bridge arm common end are connect with one end of the capacitance, and the other end of the capacitance connects leakage inductance
One end, the other end of the leakage inductance connects the primary side winding Same Name of Ends；The primary side winding non-same polarity is opened with third
Close the source electrode connection of pipe；
After the cathode of the input source and the cathode of accumulator are connected in parallel, it is separately connected the source electrode and of the second switch pipe
The source electrode of four switching tubes, the anode of the accumulator are separately connected the sun of the drain electrode and third diode of the first switch pipe
Pole, the drain electrode of the cathode connection third switching tube of third diode, the source electrode of third switching tube connect the anode of the 4th diode,
The cathode of 4th diode connects the drain electrode of the 4th switching tube；
The secondary circuit exports rectifier diode including the first output rectifier diode, second, third exports rectifier diode,
4th output rectifier diode, outputting inductance, output capacitance, output resistance；The anode and second of first output rectifier diode
The cathode connection of rectifier diode is exported, the cathode for the anode and the 4th output rectifier diode that third exports rectifier diode connects
It connects, the cathode of the first output rectifier diode is connect with the cathode of third output rectifier diode, the second output rectifier diode
Anode with the 4th output rectifier diode anode connect, output capacitance and output resistance are connected in parallel, and output capacitance is just
Pole is connected to one end of outputting inductance, and cathode is separately connected the anode of the second output rectifier diode, the 4th two pole of output rectification
The anode of pipe；The other end of the outputting inductance is separately connected the cathode of the first output rectifier diode, third output rectification two
The cathode of pole pipe；
The vice-side winding Same Name of Ends is connect with the anode of the first output rectifier diode；The vice-side winding non-same polarity and
The anode connection of three output rectifier diodes.
2. the control method based on three Port Translation device of ZVZCS full-bridges described in claim 1, it is characterised in that：If described first
The duty ratio of switching tube is D1, then the duty ratio of the second switch pipe is 1-D1；If the duty ratio of the third switching tube is
D2, then the duty ratio of the 4th switching tube is 1-D2, the opening of the second switch pipe be ahead of the third switch constantly
The time of pipe is less than half period, and the first switch pipe opens the time for being ahead of the 4th switching tube constantly less than half
A period；The duty ratio for adjusting four power switch tubes of primary circuit, can realize the power managements of three ports of converter with
Control, changes the second switch pipe and the third switching tube opens difference control output end mouthful voltage between the moment, makes
Converter realizes Sofe Switch function.
3. the control method of three Port Translation device of ZVZCS full-bridges according to claim 2, it is characterised in that：Described first to
4th switching tube switching frequency having the same.
4. the control method of three Port Translation device of ZVZCS full-bridges according to claim 2, it is characterised in that：Described first opens
Second switch pipe complementation described in Guan Guanyu is connected, and the third switching tube is connected with the 4th switching tube complementation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810233707.5A CN108512430A (en) | 2018-03-21 | 2018-03-21 | A kind of three Port Translation device of ZVZCS full-bridges and its control method |
Applications Claiming Priority (1)
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