CN109560705A - A kind of clamp diode adds capacitive soft switch full bridge converter and its control method - Google Patents
A kind of clamp diode adds capacitive soft switch full bridge converter and its control method Download PDFInfo
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- CN109560705A CN109560705A CN201710887250.5A CN201710887250A CN109560705A CN 109560705 A CN109560705 A CN 109560705A CN 201710887250 A CN201710887250 A CN 201710887250A CN 109560705 A CN109560705 A CN 109560705A
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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
- 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
- H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention proposes that a kind of clamp diode adds capacitive soft switch full bridge converter and its control method, the present invention increases clamp diode D1-D2, clamp capacitor C and resonant inductance Lr in full-bridge circuit, pass through the asymmetric control to full-bridge converter simultaneously, keep the control signal of switching tube Q1, Q2 complementary, the control signal of switching tube Q3, Q4 are complementary, the first, third switch controlled signal is greater than 0.5, the second, the 4th switch controlled signal is less than 0.5, and diagonally opposing corner switch controlled signal center is symmetrical, it is converter duty ratio that down tube, which controls signal pulsewidth,.The present invention can shutdown voltage preferably to secondary side rectifying tube carry out clamper and reduce the loss of clamp diode, simultaneously but also full-bridge converter switching tube is easier to realize ZVS, and under the asymmetric control method, simplifies the control to full-bridge converter, improve the stability of converter.
Description
Technical field
The present invention relates to clamper type full-bridge converter of zero-voltage switch, especially a kind of clamp diode adds capacitive soft open
Close full-bridge converter and its control method.
Background technique
From the last century 80's, traditional phase-shifted full-bridge converter (PSFB) is always as the research of power inverter
Emphasis, be also widely used in, powerful occasion, such as communication power supply, vehicle inverter, uninterruptible power supply etc..
Common full-bridge converter topology realizes power often through transformer leakage inductance and power tube parasitic capacitance resonance effect
The Sofe Switch of pipe, to reduce the switching loss of switching tube.Due to voltage spikes caused by reversely restoring process for secondary side rectifying tube
And concussion, Redl et al. increase a resonant inductance and two clamp diodes in transformer primary side, to eliminate output rectification
Due to voltage spikes and concussion on diode.But thus causes transformer configuration asymmetric, easily cause transformer bias, Wu Fawen
Fixed work.By the way that clamp diode is carried out position optimization, and capacitance is added, although can solve the above problem, and subtracts
The loss of small clamp diode inhibits the shutdown due to voltage spikes of rectifying tube, if but capacitance participates in work for a long time, performance must
So declined, system stability reduces.Furthermore, it is thus proposed that active clamp circuit is added on rectifying tube pair side, with realization pair
The clamping action of secondary side rectifying tube, but control circuit complicates, and cannot achieve the ZVS of active clamping switch tube, increases damage
Consumption.Also it has been proposed that, clamp diode is powered on the PSFB converter of current transformer clamper, has both realized secondary side rectifying tube shutdown electricity
Clamping action is pressed, also realizes the natural shutdown of clamp diode, but structure is complicated for introducing, while being also introduced into new loss.This
A little researchs often can not take into account the bias for inhibiting transformer, or drop under the premise of inhibiting secondary side rectifier diode due to voltage spikes
The loss of low clamp diode, to improve stability.
Summary of the invention
Goal of the invention: in order to solve the above technical problems, the Sofe Switch of full-bridge converter more preferably can be realized, and inhibit secondary
The shutdown spike of side rectifier diode, while reducing the loss of clamp diode, transducer effciency is improved, and improve system in spy
The stability to work under different operating condition, the present invention propose that a kind of clamp diode adds capacitive soft switch full bridge converter and its control
Method.The present invention increases clamp diode D1-D2, clamp capacitor C and resonant inductance Lr in full-bridge circuit, can be preferably right
The shutdown voltage of secondary side rectifying tube carries out clamper and reduces the loss of clamp diode, while but also full-bridge converter switching tube
It is easier to realize ZVS, and under the asymmetric control method, simplifies the control to full-bridge converter, improve the stability of converter.
Technical solution: in order to realize the above technical effect, the present invention proposes following technical scheme:
A kind of clamp diode adds capacitive soft switch full bridge converter, comprising: isolating transformer T, transformer primary avris
Circuit and transformer secondary lateral circuit；
Transformer primary side lateral circuit includes: switching tube Q1~Q4, clamp diode D1~D2, resonant inductance Lr and clamper electricity
Hold C；Switching tube Q1~Q4 constitutes single-phase full bridge inverter circuit, wherein Q1 and Q2 connects to form the of single-phase full bridge inverter circuit
One bridge arm, Q3 and Q4 connect to form the second bridge arm of single-phase full bridge inverter circuit, the upper tube of the respectively corresponding bridge arm of Q1, Q3, Q3,
Q4 is respectively the down tube of corresponding bridge arm；D1, D2 connect to form clamper bridge arm, and clamper bridge arm one end connects single-phase full bridge inverter circuit
The anode of input terminal, the other end connect the cathode of single-phase full bridge inverter circuit input terminal；The company of the one end resonant inductance Lr and Q1, Q2
Contact is connected, and the other end is connected with clamp capacitor C cathode, and clamp capacitor C anode is connected with the tie point of D1, D2；Resonant inductance
The tie point of Lr and clamp capacitor C are connected with the Same Name of Ends of isolating transformer T primary side winding；The tie point of Q3 and Q4 be isolated become
The different name end of depressor T primary side winding is connected.
Further, the transformer secondary lateral circuit includes: full bridge rectifier and LC filter circuit；Full-bridge rectification electricity
The positive and negative electrode of the input terminal on road is connected with the Same Name of Ends of isolating transformer T vice-side winding and different name end respectively, full bridge rectifier
Output end be connected with the input terminal of LC filter circuit, the output end of LC filter circuit is that clamp diode adds capacitive soft open
Close the output end of full-bridge converter.
The present invention also proposes that a kind of clamp diode adds the control method of capacitive soft switch full bridge converter, and feature exists
In adding in the single-phase full bridge inverter circuit of capacitive soft switch full bridge converter each switching tube using not above-mentioned clamp diode
Symmetric signal control, comprising steps of
The driving signal input input pulse of each switching tube into single-phase full bridge inverter circuit controls signal, wherein
The pulse control signal of switching tube Q1 and Q2 are complementary, and the pulse control signal of switching tube Q3 and Q4 are complementary；The pulse control of Q1 and Q3
Signal pulsewidth processed is equal, and both greater than 0.5 period；The pulse control signal pulsewidth of Q2 and Q4 is that the clamp diode adds
The duty ratio of capacitive soft switch full bridge converter, and the pulse control signal pulsewidth of Q2 and Q4 is respectively less than 0.5 period；Q1 and
The centre frequency axis of the pulse control signal of Q4 is overlapped, and the centre frequency axis of the pulse control signal of Q2 and Q3 is overlapped.
The utility model has the advantages that compared with prior art, present invention has the advantage that
1, the present invention is easier to realize the Sofe Switch of full-bridge converter switching tube, while the presence pair of clamp diode D1-D2
Secondary side rectifier diode shutdown voltage carries out clamper, reduces loss when Reverse recovery in the case of high current, while two pincers
Position diode only to secondary side rectifying tube peak restrained when it is open-minded, be not present extra turn-on instant.
2, the present invention can change the pass of secondary side rectifying tube due to the presence of clamp capacitor C by changing capacitance size
Disconnected spike, can more effectively inhibit it to turn off spike, and can reduce the power loss of clamp diode.
3, the control signal of switching tube Q1, Q2 are complementary in the present invention, and the control signal of switching tube Q3, Q4 are complementary, and first, the
Three switch controlled signals are greater than 0.5, and the second, the 4th switch controlled signal is less than 0.5, and diagonally opposing corner switch controlled signal
Central symmetry, it is converter duty ratio that down tube, which controls signal pulsewidth,.
4, diode power-up capacitance clamping circuit of the present invention does not influence primary side current of transformer symmetric form, and change can be effectively reduced
Depressor dc magnetization risk.
Detailed description of the invention
Fig. 1 is that clamp diode of the present invention adds capacitive soft switch full bridge converter circuit diagram；
Fig. 2 is that clamp diode of the present invention adds capacitive soft switch full bridge converter asymmetric control timing diagram；
Fig. 3 is that clamp diode of the present invention adds main waveform of the capacitive soft switch full bridge converter under asymmetric control
Figure.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, clamp diode adds capacitive soft switch full bridge converter by input power Vin, switching tube Q1-
Q4, clamp diode D1-D2, resonant inductance Lr, clamp capacitor C, isolating transformer T, rectifier diode DR1-DR4, filtered electrical
Feel Lf, filter capacitor CfIt is constituted with load R.
Switching tube Q1~Q4 constitutes single-phase full bridge inverter circuit, wherein Q1 and Q2 connect to form single-phase full bridge inverter circuit
The first bridge arm, Q3 and Q4 connect to form the second bridge arm of single-phase full bridge inverter circuit, and Q1, Q3 are respectively the upper of corresponding bridge arm
Pipe, Q3, Q4 are respectively the down tube of corresponding bridge arm, and two bridge arm both ends are connect with input power anode, cathode respectively；It is switched in figure
The parallel diode of pipe Q1-Q4 is the parasitic diode of each switching tube.
D1, D2 connect to form clamper bridge arm, and clamper bridge arm one end connects the anode of single-phase full bridge inverter circuit input terminal, separately
The cathode of one end connection single-phase full bridge inverter circuit input terminal；The one end resonant inductance Lr is connected with the tie point of Q1, Q2, the other end
It is connected with clamp capacitor C cathode, clamp capacitor C anode is connected with the tie point of D1, D2；Resonant inductance Lr's and clamp capacitor C
Tie point is connected with the Same Name of Ends of isolating transformer T primary side winding；The tie point of Q3 and Q4 and isolating transformer T primary side winding
Different name end is connected.
Rectifier diode DR1-DR4Form full bridge rectifier, wherein DR1Anode and DR2Cathode be connected, formed full-bridge
First half-bridge circuit of rectification circuit；DR3Anode and DR4Cathode be connected, formed full bridge rectifier the second half-bridge electricity
Road；DR1Cathode and DR3Cathode be connected, DR2Anode and DR4Anode be connected.DR1With DR2Tie point and isolating transformer
The Same Name of Ends of T vice-side winding is connected, DR3With DR4Tie point be connected with the different name end of isolating transformer T vice-side winding.
Filter inductance LfOne end and DR1And DR3Tie point be connected, the other end and filter capacitor CfAnode be connected, and filter
Wave inductance LfWith filter capacitor CfTie point add the output end of capacitive soft switch full bridge converter as the clamp diode
Anode；Filter capacitor CfCathode and DR2And DR4Tie point be connected, and the tie point add as clamp diode it is capacitive soft
The negative pole of output end of switch.Filter inductance LfWith filter capacitor CfForm LC resonance circuit.Output loading R is connected in parallel on two pole of clamper
The output end of pipe plus capacitive Sofe Switch.
The present invention also provides the control methods that a kind of clamp diode adds capacitive soft switch full bridge converter, to above-mentioned pincers
Position diode adds each switching tube in the single-phase full bridge inverter circuit of capacitive soft switch full bridge converter to use asymmetric signal control
System, control principle are as shown in Figure 2:
The driving signal input input pulse of each switching tube into single-phase full bridge inverter circuit controls signal, wherein
The pulse control signal of switching tube Q1 and Q2 are complementary, and the pulse control signal of switching tube Q3 and Q4 are complementary；The pulse control of Q1 and Q3
Signal pulsewidth processed is equal, and both greater than 0.5 period；The pulse control signal pulsewidth of Q2 and Q4 is that the clamp diode adds
The duty ratio of capacitive soft switch full bridge converter, and the pulse control signal pulsewidth of Q2 and Q4 is respectively less than 0.5 period；Q1 and
The centre frequency axis of the pulse control signal of Q4 is overlapped, and the centre frequency axis of the pulse control signal of Q2 and Q3 is overlapped.
Clamp diode proposed by the present invention adds capacitive soft switch full bridge converter to pass through resonance sense and switching tube knot electricity
The resonance effect of appearance realizes the ZVS of full-bridge switch pipe, i.e., can be in time by MOSFET knot coupling electricity before switching tube is opened when
Hold and take out stream, so that switching tube is being opened constantly in zero potential.
The suppression that moment peak voltage is turned off to rectifying tube may be implemented by two clamp diodes being added in this converter
Production is used.The size of clamp voltage when the capacitance size of clamp capacitor will affect rectifying tube shutdown, clamper capacitance is bigger, rectifying tube
Clamp voltage value it is lower.And the power loss of clamp diode also can be effectively reduced in the presence of clamp capacitor, improves and becomes
The efficiency of parallel operation.
Below by Fig. 3, the working principle of the invention is described in detail:
to-t1: toThe shutdown of moment switching tube Q4, Q1 continue to be connected, and afterflow, primary side is connected in the parallel diode of switching tube Q3
Electric current Ip is positive and reduces since maximum value；toWhen, since Q4 output capacitance is zero, i.e. voltage on shutdown moment Q4 is
Zero, realize " Sofe Switch " function of zero voltage turn-off.Switching tube Q2, Q3 shutdown, clamp diode are turned off, rectifying tube DR2、DR3
Afterflow, rectifying tube D is connectedR1、DR4Electric current reduces since maximum value.
t1-t2: t1-t2Between sometime switching tube Q3 it is open-minded, since primary current Ip current value is still positive and is subtracting
Small, electric current still passes through switching tube Q3 parallel diode afterflow, therefore switching tube Q3 realizes no-voltage and opens " Sofe Switch " function
Energy.Switching tube Q2, Q4 shutdown, clamp diode are turned off；Rectifying tube DR2、DR3Continue that afterflow, rectifying tube D is connectedR1、DR4Electric current
Continue to reduce.
t2-t3: t2-t3Primary current Ip was positive and remained unchanged period, and electric current still passes through switching tube Q3 parallel diode
Afterflow.Q2 and Q4 is turned off still in off state, clamp diode；Rectifying tube DR2、DR3Continue that afterflow, rectifying tube D is connectedR1、
DR4Electric current continues to reduce.
t3-t4: t3Moment carves switching tube Q1 shutdown, the diode continuousing flow that electric current passes through Q2.Primary current Ip is positive and its value
Continue to reduce.t3At the moment, since Q1 output capacitance is zero, i.e. voltage on shutdown moment Q1 is zero, realizes zero voltage turn-off
" Sofe Switch " function；Q2 is turned off still in off state, clamp diode；Rectifying tube DR2、DR3Continue that afterflow, rectification is connected
Pipe DR1、DR4Electric current continues to reduce.
t4-t5: primary current Ip is positive and continues to reduce, until t5When electric current Ip be kept to zero；It is being greater than t4Sometime open
Pipe Q2 conducting is closed, therefore Q2 realizes " Sofe Switch " function that no-voltage is opened.Clamp diode is turned off, rectifying tube DR2、DR3
Continue that afterflow, rectifying tube D is connectedR1、DR4Electric current continues to reduce.
t5-t6: primary current Ip electric current negative sense by zero increases；For Q1 and Q4 still in off state, clamp diode is equal
Shutdown；Rectifying tube DR2、DR3Continue that afterflow, rectifying tube D is connectedR1、DR4Electric current continues to reduce, until t6 is decreased to zero.
t6-t7: t6Moment original edge voltage reaches reversed maximum value, and clamp diode D2 is open-minded, clamp capacitor C charging, ID2
Electric current is gradually reduced, and clamp diode D1 shutdown, Q1 and Q4 are still in off state.Rectifying tube DR2、DR3Continue conducting to increase.t6
Moment rectifying tube DR1、DR4Shutdown, afterflow terminates, but D2 is open-minded at this time, and C capacitor is charging, and voltage increases, B point electricity in Fig. 1
Position is clamped to Vin, A point current potential is clamped to the voltage between zero, AB and is clamped at-Vin, since there are charges on C, and just
Increasing, i.e., bearing onesize voltage on resonant inductance, leading to primary voltage of transformer is Vin-VLrIt is gradually reduced.Therefore by
In the proportional relationship of former secondary voltage of transformer, rectifying tube DR1、DR4Shutdown voltage be also clamped, turn off due to voltage spikes
VrectIt is suppressed to (Vin-VLr)/N (N is former secondary no-load voltage ratio), and capacitor C1 capacitance is bigger, VrectIt is smaller.Therefore due to clamper two
The presence of pole pipe D2 can play rectifying tube DR1、DR4The effect of due to voltage spikes clamper is turned off, shutdown spike is suppressed.Together
When, due to the presence of clamp capacitor C, clamp diode D2 can be accelerated to turn off, that is, reduce the loss of clamp diode.
t7-t8: t8The shutdown of moment clamp diode D2, clamper, which holds C charging, to be terminated.Primary current Ip electric current is negative and continues
Increase, until the t8 moment reaches reversed maximum value.Q2, Q3 continue to be connected, and Q1 and Q4 are still in off state, rectifying tube DR1、DR4Still
Shutdown, rectifying tube DR2、DR3Electric current gradually increases.
Later half period t8-t16Switch operation mode and first half cycle be it is similar, repeat no more, also achieve switch
The soft open-minded and rectifying tube D of pipe Q1 and Q4R2、DR3Voltage clamping when shutdown.
By being analyzed above it is found that the clamp diode D2 and clamp capacitor C in main circuit are in DR1、DR4It is played when shutdown
Inhibit shutdown due to voltage spikes effect, and reduces the loss of clamp diode.Similarly, clamp diode D1 and clamp capacitor C are in DR2、
DR3Inhibition shutdown due to voltage spikes effect is also functioned to when shutdown, and reduces the loss of clamp diode.And it is possible to by appropriate
Increase the capacitance of capacitor C, the kurtosis of clamp voltage when reducing rectifying tube shutdown, and at the same time reducing the function of clamp diode
Rate loss.Resonant inductance, the output capacitance resonance with four switching tubes, realizes the Sofe Switch of switching tube.
It can produce and account for using asymmetric control method based on clamp diode plus capacitive soft switch full bridge converter
Sky ratio D directly controls switching tube, so that circuit obtains zero dutycycle closest control truly, and is lightly loaded special with unloaded operation
Property mutually it is outstanding.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of clamp diode adds capacitive soft switch full bridge converter characterized by comprising isolating transformer T, transformation
Device primary side lateral circuit and transformer secondary lateral circuit；
Transformer primary side lateral circuit includes: switching tube Q1~Q4, clamp diode D1~D2, resonant inductance Lr and clamp capacitor C；
Switching tube Q1~Q4 constitutes single-phase full bridge inverter circuit, wherein Q1 and Q2 connects to form the first bridge of single-phase full bridge inverter circuit
Arm, Q3 and Q4 connect to form the second bridge arm of single-phase full bridge inverter circuit, and Q1, Q3 are respectively the upper tube of corresponding bridge arm, and Q3, Q4 divide
The down tube of bridge arm Wei not corresponded to；D1, D2 connect to form clamper bridge arm, and clamper bridge arm one end connects single-phase full bridge inverter circuit input
The anode at end, the other end connect the cathode of single-phase full bridge inverter circuit input terminal；The tie point of the one end resonant inductance Lr and Q1, Q2
It is connected, the other end is connected with clamp capacitor C cathode, and clamp capacitor C anode is connected with the tie point of D1, D2；Resonant inductance Lr and
The tie point of clamp capacitor C is connected with the Same Name of Ends of isolating transformer T primary side winding；The tie point and isolating transformer of Q3 and Q4
The different name end of T primary side winding is connected.
2. a kind of clamp diode according to claim 1 adds capacitive soft switch full bridge converter, which is characterized in that institute
Stating transformer secondary lateral circuit includes: full bridge rectifier and LC filter circuit；The positive and negative electrode of the input terminal of full bridge rectifier
It is connected respectively with the Same Name of Ends of isolating transformer T vice-side winding and different name end, the output end and LC filtered electrical of full bridge rectifier
The input terminal on road is connected, and the output end of LC filter circuit is the output that clamp diode adds capacitive soft switch full bridge converter
End.
3. the control that a kind of clamp diode as described in claim 1 to 2 any one adds capacitive soft switch full bridge converter
Method processed, which is characterized in that each switching tube in single-phase full bridge inverter circuit is controlled using asymmetric signal, comprising steps of
The driving signal input input pulse of each switching tube into single-phase full bridge inverter circuit controls signal, wherein switch
The pulse control signal of pipe Q1 and Q2 are complementary, and the pulse control signal of switching tube Q3 and Q4 are complementary；The pulse control of Q1 and Q3 is believed
Width of feeling the pulse is equal, and both greater than 0.5 period；The pulse control signal pulsewidth of Q2 and Q4 is that the clamp diode power-up is held
The duty ratio of type soft switch full bridge converter, and the pulse control signal pulsewidth of Q2 and Q4 is respectively less than 0.5 period；Q1's and Q4
The centre frequency axis of pulse control signal is overlapped, and the centre frequency axis of the pulse control signal of Q2 and Q3 is overlapped.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729912A (en) * | 2019-10-30 | 2020-01-24 | 渤海大学 | High-frequency induction heating series resonance soft switch inversion control method |
| WO2022037755A1 (en) * | 2020-08-17 | 2022-02-24 | Huawei Technologies Co., Ltd. | Energy recovery auxilary circuit for dc/dc resonant power converter topologies |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253409A (en) * | 1998-11-10 | 2000-05-17 | 深圳市中兴通讯股份有限公司 | Asymmetric full-bridge phase-shift type zero-voltage zero-current soft switch circuit and its method |
| CN2385469Y (en) * | 1999-08-04 | 2000-06-28 | 深圳永达辉科技有限公司 | Power supply device for phase-shift resonance switch |
| EP1748539A2 (en) * | 2005-07-29 | 2007-01-31 | TDK Corporation | Switching power supply with surge voltage suppression |
| JP2008160948A (en) * | 2006-12-22 | 2008-07-10 | Shindengen Electric Mfg Co Ltd | Switching power supply unit |
| CN104539161A (en) * | 2014-12-02 | 2015-04-22 | 许继电气股份有限公司 | Phase-shift full-bridge zero-voltage switch converter |
| CN106685231A (en) * | 2016-11-23 | 2017-05-17 | 南京航空航天大学 | Primary side clamping type soft switching full-bridge converter and asymmetrical control method therefor |
-
2017
- 2017-09-26 CN CN201710887250.5A patent/CN109560705A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253409A (en) * | 1998-11-10 | 2000-05-17 | 深圳市中兴通讯股份有限公司 | Asymmetric full-bridge phase-shift type zero-voltage zero-current soft switch circuit and its method |
| CN2385469Y (en) * | 1999-08-04 | 2000-06-28 | 深圳永达辉科技有限公司 | Power supply device for phase-shift resonance switch |
| EP1748539A2 (en) * | 2005-07-29 | 2007-01-31 | TDK Corporation | Switching power supply with surge voltage suppression |
| JP2008160948A (en) * | 2006-12-22 | 2008-07-10 | Shindengen Electric Mfg Co Ltd | Switching power supply unit |
| CN104539161A (en) * | 2014-12-02 | 2015-04-22 | 许继电气股份有限公司 | Phase-shift full-bridge zero-voltage switch converter |
| CN106685231A (en) * | 2016-11-23 | 2017-05-17 | 南京航空航天大学 | Primary side clamping type soft switching full-bridge converter and asymmetrical control method therefor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729912A (en) * | 2019-10-30 | 2020-01-24 | 渤海大学 | High-frequency induction heating series resonance soft switch inversion control method |
| CN110729912B (en) * | 2019-10-30 | 2021-05-14 | 渤海大学 | High-frequency induction heating series resonance soft switch inversion control method |
| WO2022037755A1 (en) * | 2020-08-17 | 2022-02-24 | Huawei Technologies Co., Ltd. | Energy recovery auxilary circuit for dc/dc resonant power converter topologies |
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