CN109274274A - A kind of five element resonance converters - Google Patents

A kind of five element resonance converters Download PDF

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Publication number
CN109274274A
CN109274274A CN201811414168.1A CN201811414168A CN109274274A CN 109274274 A CN109274274 A CN 109274274A CN 201811414168 A CN201811414168 A CN 201811414168A CN 109274274 A CN109274274 A CN 109274274A
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CN
China
Prior art keywords
circuit
diode
side winding
switching tube
resonance
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Pending
Application number
CN201811414168.1A
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Chinese (zh)
Inventor
赵清林
王玉洁
袁精
刘威
王德玉
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Yanshan University
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Yanshan University
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Priority to CN201811414168.1A priority Critical patent/CN109274274A/en
Publication of CN109274274A publication Critical patent/CN109274274A/en
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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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/4815—Resonant converters
    • 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)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a kind of five element resonance converters, belong to converters technical field, especially suitable for high frequency, high power density, efficient isolation power conversion occasion, the five element resonances converter includes DC bus input circuit, square-wave generator, resonance circuit, transformer, current rectifying and wave filtering circuit, load, and the input terminal of DC bus input circuit connection square-wave generator simultaneously is used to input steady dc voltage；The input terminal of the output end connection resonance circuit of square-wave generator, transformer includes primary side winding and vice-side winding, primary side winding is connected to the output end of resonance circuit, vice-side winding is connected to the input terminal of current rectifying and wave filtering circuit, the primary side winding of transformer and vice-side winding are isolated and realize that voltage class changes, the AC rectification that current rectifying and wave filtering circuit exports transformer secondary output is at direct current；The output end of current rectifying and wave filtering circuit links load.Circuit of the present invention simply and readily controls, and is able to achieve Sofe Switch in entire working range.

Description

A kind of five element resonance converters
Technical field
The present invention relates to converters technical field, specially a kind of five element resonance converters.
Background technique
With the development of power electronics technology, the DC converter of wide gain in portable device, electric car is vehicle-mounted fills The fields such as motor, energy-storage system, communication power supply are widely used.The working frequency of DC converter is higher and higher, greatly reduces The volume of the passive elements such as transformer, capacitor, inductance, but with the raising of switching frequency, the switching loss of converter is also therewith Increase, therefore the research of soft switch technique is very necessary.Controlled resonant converter will be flowed through due to the resonance characteristic of resonant element itself The electric current of switching tube is changed into sine wave by square-wave signal, is switched on or off switching device under the conditions of ZVS or ZCS, soft to open The realization of pass reduces the switching loss of device.LLC is mainly manifested in (1) and is easy because its good characteristic is by people's attention Realize the ZVS of primary side switch pipe and the ZCS of secondary side diode, the whole efficiency of converter is higher；(2) frequency control tune is used Output voltage is saved, control mode is simple；(3) inductance LmIt is replaced by the magnetizing inductance of transformer T, power density increases.
But LLC converter is suitble to work near resonant frequency point, and gain ranging is relatively narrow at this time, and application is limited.For LLC converter is set to meet the requirement of wide gain, the value of the magnetizing inductance of transformer T is all smaller, this can give converter band Biggish conduction loss is carried out.Therefore, LLC converter is difficult to meet wide gain and efficient requirement simultaneously, novel topology It needs to be suggested.
Summary of the invention
In view of the above technical problems, full the purpose of the present invention is to provide a kind of five element resonance converter topology structures The sufficient wide gain of converter and efficient requirement.
To achieve the above object, the present invention is realized according to following technical scheme:
A kind of five element resonance converters characterized by comprising DC bus input circuit, square-wave generator, resonance Circuit, transformer, current rectifying and wave filtering circuit, load, wherein
The DC bus input circuit connects the input terminal of the square-wave generator and for inputting stable DC Pressure；The output end of the square-wave generator connects the input terminal of the resonance circuit, and the square-wave generator is by switching tube group At bridge circuit and for generating square wave；The resonance circuit is used for according to the duty ratio that the square-wave generator exports Resonance occurs for 50% square wave, generates saddle wave electric current, and the switching tube of the square-wave generator is made to realize Sofe Switch；
The transformer includes primary side winding NpWith vice-side winding Ns, the primary side winding NpIt is connected to the resonance circuit Output end, the vice-side winding NsIt is connected to the input terminal of the current rectifying and wave filtering circuit, by the primary side winding and pair of transformer Winding isolation in side simultaneously realizes that voltage class changes simultaneously, the alternating current that the current rectifying and wave filtering circuit exports the transformer secondary output It is rectified into direct current；The output end of the current rectifying and wave filtering circuit links the load.
In above-mentioned technical proposal, the bridge circuit of the square-wave generator is full bridge driving circuit, the full-bridge driving electricity Road includes first switch tube S1, second switch S2, third switching tube S3, the 4th switching tube S4, the first switch tube S1Leakage Pole and the third switching tube S3Drain electrode be connected, the first switch tube S1Source electrode be connected to the second switch S2 Drain electrode, the third switching tube S3Source electrode be connected to the 4th switching tube S4Drain electrode, second switch S2Source electrode connect In the 4th switching tube S4Source electrode.
In above-mentioned technical proposal, the first switch tube S1, second switch S2, third switching tube S3And the 4th switch Pipe S4Using switch mosfet pipe or IGBT switching tube.
In above-mentioned technical proposal, the resonance circuit includes main inductance Lm, first capacitor C1, trapper, the trapper One end is connected to the first switch tube S of the square-wave generator1Source electrode and second switch S2Drain electrode, trapper it is another End is connected to main inductance LmOne end and transformer T primary side winding NpSame Name of Ends, main inductance LmThe other end be connected to transformation Device T primary side winding NpNon-same polarity and first capacitor C1One end, first capacitor C1The other end be connected to third switching tube S3 Source electrode and the 4th switching tube S4Drain electrode.
In above-mentioned technical proposal, the trapper includes series resonance slot and the first inductance L1, series resonance slot and first Inductance L1It is connected in parallel, the series resonance slot includes the second inductance L2, the second capacitor C2, the second inductance L2With the second electricity Hold C2It is connected in series.
In above-mentioned technical proposal, the current rectifying and wave filtering circuit includes rectification circuit and filter capacitor Co, the rectification circuit By first diode D1, the second diode D2, third diode D3, the 4th diode D4It constitutes, first diode D1Anode and Second diode D2Cathode be connected in the transformer T vice-side winding NsSame Name of Ends, first diode D1Cathode be connected in the three or two Pole pipe D3Cathode, output filter capacitor CoOne end and load RoOne end, transformer T vice-side winding NsNon-same polarity is connected in Third diode D3Anode and the 4th diode D4Cathode, the 4th diode D4Anode be connected in the second diode D2Sun Pole, output filter capacitor CoThe other end and load RoThe other end.
Compared with the prior art, the invention has the following advantages:
(1) in entire working range and full-load range the ZVS of primary side switch pipe and secondary side diode ZCS, transformation The whole efficiency of device is higher；
(2) voltage of all switching devices is all directly clamped by input voltage or output voltage, switching device voltage stress It is low；
(3) main inductance LmIt is replaced by the magnetizing inductance of transformer T, power density increases.
(4) converter can transmit power using triple-frequency harmonics, high to the utilization rate of energy；
(5) gain ranging that converter is able to achieve is wide, can realize that gain is zero under smaller switching frequency, is suitble to width gain Occasion.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural block diagram of five element resonance converters of the invention；
Fig. 2 is the circuit diagram of the embodiment of five element resonance converters of the invention；
Fig. 3 is the gain curve figure of five element resonance converter embodiments of the invention；
Fig. 4 is the main waveform diagram of five element resonance converter embodiments of the invention；
Fig. 5 (a)-Fig. 5 (e) is equivalent circuit diagram of the five element resonance converter embodiments of the invention in each switch mode；
Fig. 6 and Fig. 7 is the working waveform figure of five element resonance converter embodiments of the invention respectively；
Wherein, the designation in the figures above: A, B, C, D are bridge arm midpoint；VinFor input source；S1、S2、S3、S4Respectively For the first, second, third, fourth switching tube；C1For first capacitor；L1For the first inductance；C2For the second capacitor；L2For the second electricity Sense；LmFor main inductance；T is transformer；D1、D2、D3、D4Respectively the first, second, third, fourth diode；CoFor filtered electrical Hold；RoFor load；NpAnd NsThe respectively primary side winding and vice-side winding of transformer T； imFor main inductance LmElectric current；ipFor original Side electric current；isFor secondary current；VoFor output voltage；VmFor main inductance LmThe voltage at both ends；VABFor A, B point-to-point transmission voltage；VCDFor C, D point-to-point transmission voltage；VS1For first switch tube S1Both end voltage；t0、t1、t2、t3、t4、t5、t6、t7、t8、 t9、t10For the time.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.
Attached drawing 1 show a kind of structural schematic diagram of herein described five element resonances converter.In figure, five element resonances Converter include DC bus input circuit 10, square-wave generator 20, resonance circuit 30, transformer 40, current rectifying and wave filtering circuit 50, Load 60；
The DC bus input circuit 10 connects the input terminal of the square-wave generator 20 and stable straight for inputting Galvanic electricity pressure；The output end of the square-wave generator 20 connects the input terminal of the resonance circuit 30, and the square-wave generator 20 is The bridge circuit that is made of switching tube and for generating square wave；The resonance circuit 30 is used for defeated according to the square-wave generator 20 Resonance occurs for the square wave that duty ratio out is 50%, generates saddle wave electric current, and keeps the switching tube of the square-wave generator 20 real Existing Sofe Switch；
The transformer 40 includes primary side winding NpWith vice-side winding Ns, the primary side winding NpIt is connected to the resonance electricity The output end on road 30, the vice-side winding NsIt is connected to the input terminal of the current rectifying and wave filtering circuit 50, by the primary side of transformer 40 Winding and vice-side winding isolation simultaneously realize that voltage class changes simultaneously, and the current rectifying and wave filtering circuit 50 is by 40 grades of the transformer The AC rectification of output is at direct current；The output end link load 60 of the current rectifying and wave filtering circuit 50.
Wherein, the bridge circuit of square-wave generator is full bridge driving circuit, and the full bridge driving circuit includes first switch Pipe S1, second switch S2, third switching tube S3, the 4th switching tube S4, the first switch tube S1Drain electrode and the third open Close pipe S3Drain electrode be connected, the first switch tube S1Source electrode be connected to the second switch S2Drain electrode, the third Switching tube S3Source electrode be connected to the 4th switching tube S4Drain electrode, second switch S2Source electrode be connected in the 4th switching tube S4 Source electrode.
Attached drawing 2 show a kind of embodiment circuit diagram of herein described five element resonances converter.Preferably, in which: The first switch tube S1, second switch S2, third switching tube S3And the 4th switching tube S4Using switch mosfet pipe or IGBT switching tube.
The resonance circuit includes main inductance Lm, first capacitor C1, trapper, one end of the trapper is connected to described The first switch tube S of square-wave generator1Source electrode and second switch S2Drain electrode, the other end of trapper is connected to main inductance LmOne end and transformer T primary side winding NpSame Name of Ends, main inductance LmThe other end be connected to transformer T primary side winding Np's Non-same polarity and first capacitor C1One end, first capacitor C1The other end be connected to third switching tube S3Source electrode and the 4th open Close pipe S4Drain electrode.
The trapper includes series resonance slot and the first inductance L1, series resonance slot and the first inductance L1It is connected in parallel, institute Stating series resonance slot includes the second inductance L2, the second capacitor C2, the second inductance L2With the second capacitor C2It is connected in series.
Preferably, the main inductance LmIt is replaced by the magnetizing inductance of transformer T.
In above-mentioned technical proposal, the current rectifying and wave filtering circuit includes rectification circuit and filter capacitor Co, the rectification circuit By first diode D1, the second diode D2, third diode D3, the 4th diode D4It constitutes, first diode D1Anode and Second diode D2Cathode be connected in the transformer T vice-side winding NsSame Name of Ends, first diode D1Cathode be connected in the three or two Pole pipe D3Cathode, output filter capacitor CoOne end and load RoOne end, transformer T vice-side winding NsNon-same polarity is connected in Third diode D3Anode and the 4th diode D4Cathode, the 4th diode D4Anode be connected in the second diode D2Sun Pole, output filter capacitor CoThe other end and load RoThe other end.
Multi-element resonant converter embodiment of the present invention uses following control program in the specific implementation: described One, second, third, the 4th switching tube S1、S2、S3、S4Switching frequency it is equal, first switch tube S1, third switching tube S3Open OFF signal respectively with second switch S2, the 4th switching tube S4Switching signal it is complementary, and duty ratio is 0.5, first switch tube S1With the 4th switching tube S4It simultaneously turns on, simultaneously turns off, second switch S2With third switching tube S3It simultaneously turns on, simultaneously turns off. In the specific implementation, first switch tube S1With second switch S2Switching signal between must be provided with reasonable dead time with It avoids that bridge arm direct pass, third switching tube S occurs3With the 4th switching tube S4Switching signal between when must be provided with reasonable dead zone Between to avoid occur bridge arm direct pass.By adjusting the first, second, third, fourth switching tube S1、S2、S3、S4Switching frequency tune Save output voltage.
Attached drawing 3 is the gain curve figure of multi-element resonant converter embodiment 1 of the present invention, it can be seen from the figure that returning When one change frequency is greater than 1, the gain of multi-element resonant converter of the present invention is obvious as the increase of frequency declines, this is trapper It is influenced caused by transducer gain.When normalized frequency is equal to 2, trap impedance is infinitely great, is equivalent to open circuit, therefore gain It is reduced to zero.When normalized frequency is equal to 3, gain 1, therefore converter can transmit energy using triple-frequency harmonics.
Attached drawing 4 is the main waveform diagram of five element resonance converter embodiments of the invention.The converter is switched at half 5 kinds of operation modes are shared in period.Do following hypothesis before analysis: (1) converter is in steady operational status；(2) all electricity Sense, capacitor and transformer are ideal element；(3) filter capacitor is sufficiently large, ignores output voltage ripple.Its each switch mode work It is described as follows as situation.
1 [t of operating mode0, t1]: switching tube S1And S4It is in the conductive state, exciting current imIn t0Moment is become just by negative, secondary Side diode D1And D4Conducting, main inductance are clamped by output voltage, primary side L1、C1And C2Common resonance, power supply is by energy from primary side It is transmitted to load, referring to attached drawing 5 (a).
2 [t of operating mode1, t2]: switching tube S1And S4It tends to remain on, in t1Moment, primary current ipEqual to excitation electricity Flow im, in this stage L1、C1、L2、C2And LmCommon resonance, transformer secondary side current isIt is reduced to 0, in this way output rectifying tube D1With D4ZCS shutdown may be implemented.The separation of former pair side, primary side does not transmit energy to secondary side, referring to attached drawing 5 (b).
3 [t of operating mode2, t3]: in t2Moment, S1And S4Shutdown, primary side resonance current start to S2And S3Parasitism electricity Discharge capacitor gives S1And S4Parasitic capacitance charging, arrive t3Moment S2And S3Parasitic capacitance discharge both end voltage be reduced to 0, S1And S4 Parasitic capacitance rise to Vin, referring to attached drawing 5 (c).
4 [t of operating mode3, t4]: in t3Moment, S2And S3The voltage at both ends is reduced to 0, open-minded during this working condition Switching tube S2And S3, it can be achieved that ZVS, secondary side diode D2And D3Conducting, ipGradually it is kept to 0, isReversely gradually increase.Power supply will Amount is transmitted to load from primary side, referring to attached drawing 5 (d).
5 [t of operating mode4, t5]: from t4Moment, ipIt is reversely gradually increased from 0, imAlso it is gradually reduced, reaches t5When It carves, imIt is reduced to 0, primary side L1、C1、L2And C2Common resonance, it is since fundamental wave and triple-frequency harmonics superposition cause that saddle, which is presented, in electric current , secondary side diode D at this time2And D3Conducting, energy is transmitted to load from primary side by power supply, referring to attached drawing 5 (e).
The above-mentioned course of work is summarized it is found that all switching tubes of the converter can realize that no-voltage is open-minded, diode can be real Existing zero-current switching, is not present diode reverse recovery problem, therefore, all switching devices are all Sofe Switch working conditions.
Main inductance L in the present embodimentmIt is replaced by the magnetizing inductance of transformer T.Relevant parameter is: Vin=400V, the first electricity Hold C1=84.65nF, the first inductance L1=25.53uH, the second capacitor C2=12nF, the second inductance L2=27.24uH, main inductance Lm=250uH, Np/Ns=2.
The work wave of Fig. 6 is the present embodiment switching frequency when being 85kHz five element resonance converters, it can be seen that resonance Current waveform is in saddle wave, output voltage 210V.
The work wave of Fig. 7 is the present embodiment switching frequency when being 138kHz five element resonance converters, it can be seen that humorous The current waveform that shakes is in saddle wave, output voltage 150V.
Five element resonance converters of the invention realize output voltage by pulse frequency modulated in relatively narrow frequency range Wide scope adjust.The switching tube of converter is open-minded with no-voltage achievable under the conditions of underloading in entire working range, output Zero-current switching can be achieved in rectifier diode in the following range of resonant frequency point.Element resonance converter of the present invention is using three Subharmonic transmits power, high to the utilization rate of energy.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.

Claims (6)

1. a kind of five element resonance converters characterized by comprising DC bus input circuit, square-wave generator, resonance electricity Road, transformer, current rectifying and wave filtering circuit, load, wherein
The DC bus input circuit connects the input terminal of the square-wave generator and for inputting steady dc voltage；Institute The output end for stating square-wave generator connects the input terminal of the resonance circuit, and the square-wave generator is the bridge being made of switching tube Formula circuit simultaneously is used to generate square wave；The side that the duty ratio that the resonance circuit is used to be exported according to the square-wave generator is 50% Resonance occurs for wave, generates saddle wave electric current, and the switching tube of the square-wave generator is made to realize Sofe Switch；
The transformer includes primary side winding NpWith vice-side winding Ns, the primary side winding NpIt is connected to the defeated of the resonance circuit Outlet, the vice-side winding NsBe connected to the input terminal of the current rectifying and wave filtering circuit, by the primary side winding of transformer and secondary side around Group isolation simultaneously realizes that voltage class changes simultaneously, the AC rectification that the current rectifying and wave filtering circuit exports the transformer secondary output At direct current；The output end of the current rectifying and wave filtering circuit links the load.
2. five element resonance converter according to claim 1, which is characterized in that the bridge circuit of the square-wave generator is Full bridge driving circuit, the full bridge driving circuit include first switch tube S1, second switch S2, third switching tube S3, the 4th open Close pipe S4, the first switch tube S1Drain electrode and the third switching tube S3Drain electrode be connected, the first switch tube S1? Source electrode is connected to the second switch S2Drain electrode, the third switching tube S3Source electrode be connected to the 4th switching tube S4 Drain electrode, second switch S2Source electrode be connected in the 4th switching tube S4Source electrode.
3. five element resonances converter according to claim 2, which is characterized in that the first switch tube S1, second switch Pipe S2, third switching tube S3And the 4th switching tube S4Using switch mosfet pipe or IGBT switching tube.
4. five element resonances converter according to claim 3, which is characterized in that the resonance circuit includes main inductance Lm、 First capacitor C1, trapper, one end of the trapper is connected to the first switch tube S of the square-wave generator1Source electrode and Two switching tube S2Drain electrode, the other end of trapper is connected to main inductance LmOne end and transformer T primary side winding NpIt is of the same name End, main inductance LmThe other end be connected to transformer T primary side winding NpNon-same polarity and first capacitor C1One end, first electricity Hold C1The other end be connected to third switching tube S3Source electrode and the 4th switching tube S4Drain electrode.
5. multi-element resonant converter according to claim 4, which is characterized in that the trapper includes series resonance slot With the first inductance L1, series resonance slot and the first inductance L1It is connected in parallel, the series resonance slot includes the second inductance L2, second Capacitor C2, the second inductance L2With the second capacitor C2It is connected in series.
6. five element resonance converter according to claim 4, which is characterized in that the current rectifying and wave filtering circuit includes rectified current Road and filter capacitor Co, the rectification circuit is by first diode D1, the second diode D2, third diode D3, the 4th diode D4It constitutes, first diode D1Anode and the second diode D2Cathode be connected in the transformer T vice-side winding NsSame Name of Ends, First diode D1Cathode be connected in third diode D3Cathode, output filter capacitor CoOne end and load RoOne end, become Depressor T vice-side winding NsNon-same polarity is connected in third diode D3Anode and the 4th diode D4Cathode, the 4th diode D4 Anode be connected in the second diode D2Anode, output filter capacitor CoThe other end and load RoThe other end.
CN201811414168.1A 2018-11-26 2018-11-26 A kind of five element resonance converters Pending CN109274274A (en)

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CN111525807A (en) * 2020-04-13 2020-08-11 哈尔滨工业大学 Harmonic optimization-based high-order LCLCL direct current converter and parameter design method
CN111682768A (en) * 2020-06-04 2020-09-18 哈尔滨工业大学 LCLCL high-order direct current converter based on stacked bridge and control method
CN112436733A (en) * 2020-11-13 2021-03-02 燕山大学 Three-phase resonance topology capable of reducing duty ratio loss and auxiliary switch modulation method thereof

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CN101335490A (en) * 2008-08-07 2008-12-31 英飞特电子（杭州）有限公司 Multiple-resonant soft switch converter
EP3373429A1 (en) * 2017-03-09 2018-09-12 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dual active bridge converter and method to control such a converter.

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CN111525807A (en) * 2020-04-13 2020-08-11 哈尔滨工业大学 Harmonic optimization-based high-order LCLCL direct current converter and parameter design method
CN111682768A (en) * 2020-06-04 2020-09-18 哈尔滨工业大学 LCLCL high-order direct current converter based on stacked bridge and control method
CN112436733A (en) * 2020-11-13 2021-03-02 燕山大学 Three-phase resonance topology capable of reducing duty ratio loss and auxiliary switch modulation method thereof

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Application publication date: 20190125