CN108183614B - A kind of composite bridge dual output LLC resonant converter - Google Patents
A kind of composite bridge dual output LLC resonant converter Download PDFInfo
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- CN108183614B CN108183614B CN201711474947.6A CN201711474947A CN108183614B CN 108183614 B CN108183614 B CN 108183614B CN 201711474947 A CN201711474947 A CN 201711474947A CN 108183614 B CN108183614 B CN 108183614B
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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
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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)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a kind of composite bridge dual output LLC resonant converters, what is solved is more, the at high cost technical problem of quantity of power device, by using including sequentially connected input source Uin, switching network, resonant network, transformer, rectifying and wave-filtering network, load, transformation is every including the first transformer T1 and the second transformer T2, first transformer is made of two primary side windings Np1, Np2 and vice-side winding Ns1, and the second transformer is made of primary side winding Np3 and vice-side winding Ns2；Switching network includes first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4；Rectifying and wave-filtering network includes the first rectifying and wave-filtering network and the second rectifying and wave-filtering network；Load includes that the first load be that Ro1 and second loads the technical solution for being Ro2, preferably resolves the problem, can be used for communicating, the fields such as aerospace, new-energy grid-connected, electric car, LED illumination.
Description
Technical field
The present invention relates to electric and electronic powers to convert application field, and in particular to a kind of composite bridge dual output LLC resonance
Converter.
Background technique
In recent years, as the problems such as global energy crisis, environmental pollution highlights.How electric power energy is efficiently utilized,
Through an important research subject under discussion for becoming current academia.Interface of the DC/DC as power grid and load, its purpose is to efficient
Ground provides the electric energy of high quality for various electrical equipments.Three element resonance type DCs-DC converter is in early 1990s
It is just concluded proposition, but since control is complicated plus at that time without suitable frequency control integrated chip and not by deeper into research
And it is widely applied.In recent years, due to using phase whole-bridging circuit as isolated soft switching direct current-DC converting high-power in representative
The circulating current of device is lost and the bottleneck problem of duty-cycle loss can not be solved thoroughly, along with phase whole-bridging circuit needs to export
Filter inductance simultaneously brings the higher problem of rectifier diode pressure resistance demand, so that academia and industry are all to can be realized function
The LLC mode of resonance circuit of rate pipe ully-soft switchingr work is paid attention to again.It is suitble to semibridge system, three level of full-bridge type of different occasions
The LLC mode of resonance circuit of formula and full-bridge three-level formula LLC mode of resonance circuit and suitable High voltage output multiple-channel output is goed deep into
Research.
LLC resonant converter is to increase a parallel resonant inductor on the basis of traditional LC second order controlled resonant converter to improve
And come, it characteristically has clear improvement relative to common series, parallel controlled resonant converter.Controlled resonant converter is with resonance circuit
For basic transformation unit, when resonance occurs using circuit, current or voltage periodically zero crossing, so that switching device is in zero electricity
It opens or turns off under the conditions of pressure or zero current, to realize Sofe Switch, achieve the purpose that reduce switching loss.It navigates in aviation
It, automobile, medical treatment, computer, the Practical Projects technical field such as communication system application in, in order to meet different loads power supply
Voltage and current demand, it is often necessary to use dual output power supply.
Existing dual output LLC resonant converter at least uses 8 power-type devices, and there are power devices used in converter
Quantity is more, the technical problem that at high cost, convertor controls are complicated, transducer effciency is low.Therefore it provides one kind is able to solve
The dual output LLC resonant converter of problem is stated with regard to necessary.
Summary of the invention
Skill more, at high cost that the technical problem to be solved by the present invention is to the quantity of power device existing in the prior art
Art problem.A kind of new composite bridge dual output LLC resonant converter, the composite bridge dual output LLC resonant converter are provided
Have the characteristics that the quantity of power device is few, at low cost, convertor controls are simple, transducer effciency is high.
In order to solve the above technical problems, the technical solution adopted is as follows:
A kind of composite bridge dual output LLC resonant converter, the composite bridge dual output LLC resonant converter include according to
The input source Uin of secondary connection, switching network, resonant network, transformer, rectifying and wave-filtering network, load；The transformation is every including the
One transformer T1 and the second transformer T2, the first transformer are made of two primary side windings Np1, Np2 and vice-side winding Ns1, the
Two transformers are made of primary side winding Np3 and vice-side winding Ns2；The switching network includes first switch tube Q1, second switch
Pipe Q2, third switching tube Q3 and the 4th switching tube Q4；The rectifying and wave-filtering network includes that the first rectifying and wave-filtering network and second are whole
Flow filter network；It is Ro2 that the load, which is the load of Ro1 and second including the first load,；The resonant network include and switch net
The first resonant cavity, the second resonant cavity and the third resonant cavity of network connection；First resonant cavity is by the first resonant capacitance Cr1,
One resonant inductance Lr1, the first magnetizing inductance Lm1 are constituted；Second resonant cavity is by the second resonant capacitance Cr2, the second resonant inductance
Lr2, the second magnetizing inductance Lm2 are constituted；Third resonant cavity is by third resonant capacitance Cr3, third resonant inductance Lr3, third excitation
Inductance Lm3 is constituted.
The working principle of the invention: the present invention switches the combination of the structure of half-bridge and full-bridge by setting switching network,
So that two-way power conversion is relatively independent, it can flexible design parameter.Double LLC half bridge resonants of crisscross parallel are passed through same
One transformer carries out magnetic and integrates, and reduces the quantity of magnetic element, is conducive to improve power density.Compared to existing 8 function
Rate device, the present embodiment only use 4 power devices, switching tube.Double half-bridge structures of crisscross parallel can reduce input end switch
Tube current stress reduces output voltage current ripples using phase shifting control.The power that the multiplication of voltage that full-bridge output end is able to achieve flows again becomes
It changes.The topology has only used four switching tubes, allows and a switching network while serving three resonant cavities, to realize two kinds
The electric energy of different demands is supplied.Demand, which is converted, for simplified efficient, high power density dual output dc power provides one kind newly
Solution.
In above scheme, for optimization, further, the first switch tube Q1 drain electrode is connected in third switching tube Q3 drain electrode,
The 4th switching tube Q4 source electrode is connected in second switch Q2 source electrode；The first switch tube Q1 source electrode connects second switch Q2
Drain electrode, the third switching tube Q3 source electrode connect the 4th switching tube Q4 drain electrode.
Further, the drain electrode of the one end the first resonant capacitance Cr1 connection first switch tube Q1, the other end are connected in first
One end of resonant inductance Lr1, the other end of the first resonant inductance Lr1 are connected in one end and the transformer T1 of the first magnetizing inductance Lm1
Primary side the first winding Np1 Same Name of Ends, the other end of the first magnetizing inductance Lm1 and the first winding of primary side Np1 of transformer T1 are non-
Same Name of Ends is connected in third switching tube Q3 source electrode.
Further, the drain electrode of one end connection second switch Q2 of the second resonant capacitance Cr2, the other end are connected in the
One end of two resonant inductance Lr2；The other end of second resonant inductance Lr2 is connected in one end and the transformer of the second magnetizing inductance Lm2
Primary side the second winding Np2 Same Name of Ends of T1；The other end of second magnetizing inductance Lm2 and the second winding of primary side Np2 of transformer T1
Non-same polarity is connected in second switch Q2 source electrode.
Further, one end connection third switching tube Q3 source electrode of the third resonant capacitance Cr3 connects the 4th switching tube
Q4 drain electrode, the other end of third resonant capacitance Cr3 are connected in one end of third resonant inductance Lr3, and third resonant inductance Lr3's is another
End is connected in one end of third magnetizing inductance Lm3 and the primary side winding Np3 of the second transformer T2；Third magnetizing inductance Lm3's is another
The other end of the primary side winding Np3 of end and the second transformer T2 are connected in second switch Q2 drain electrode.
Further, the first rectifying and wave-filtering network is by the first rectifier diode D1, the second rectifier diode D2, first
Filter capacitor Co1 is constituted；The second rectifying and wave-filtering network is by third rectifier diode D3, the 4th rectifier diode D4, second
Filter capacitor Co2 is constituted.
Further, the anode of the first rectifier diode D1 is connected to the first transformer T1 pair of the first transformer T1
Side winding NS1 Same Name of Ends；The cathode of first rectifier diode D1 is connected in one end and the first load Ro1 of the first filter capacitor Co1
One end；It takes out at the center that the other end of the other end of first filter capacitor Co1 and the first load Ro1 are connected in the first transformer T1
Head；
The anode of second rectifier diode D2 is connected in the vice-side winding NS1 non-same polarity of the first transformer T1, the second rectification
The cathode of diode D2 is connected in the cathode of the first rectifier diode D1, one end of the first filter capacitor Co1 and the first load Ro1's
One end；
The anode of third rectifier diode D3 is connected to the vice-side winding NS2 Same Name of Ends of the second transformer T2, third rectification
The cathode of diode D3 is connected to the cathode of the 4th rectifier diode D4, one end of the second filter capacitor Co2 and the second load Ro2
One end；The other end of the second filter capacitor Co2 and second load Ro2 the other end and the second transformer T2 secondary side around
Group Ns2 centre cap connection；
The anode of 4th rectifier diode D4 is connected in the vice-side winding Ns2 non-same polarity of the second transformer T2.
Beneficial effects of the present invention:
Output circuit topology incorporates the structure of half-bridge and full-bridge, and two-way power conversion is relatively independent, can flexible design ginseng
Number.Double LLC half bridge resonants of crisscross parallel are carried out magnetic by the same transformer to integrate, reduce the number of magnetic element
Amount is conducive to improve power density.The structure of crisscross parallel is conducive to input the shunting of high current, effectively reduces switch tube current
Stress.Interleaving and Transformer Paralleling takes the strategy of 90 degree of phase shifting controls can effectively smaller output voltage current ripples.Unified resonance
Chamber parameter designing can reach the purpose that multiplication of voltage flows dual output again.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1, the schematic diagram of composite bridge dual output LLC resonant converter in embodiment 1.
Fig. 2, output voltage current waveform schematic diagram.
Fig. 3, output voltage waveforms schematic diagram.
Fig. 4, output current wave schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
Embodiment 1
The present embodiment provides a kind of composite bridge dual output LLC resonant converter, such as Fig. 1, the composite bridge dual outputs
LLC resonant converter includes sequentially connected input source Uin, switching network, resonant network, transformer, rectifying and wave-filtering network, bears
It carries；The transformation every including the first transformer T1 and the second transformer T2, the first transformer by two primary side windings Np1, Np2 and
Vice-side winding Ns1 is constituted, and the second transformer is made of primary side winding Np3 and vice-side winding Ns2；The switching network includes first
Switching tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4；The rectifying and wave-filtering network includes the first rectification
Filter network and the second rectifying and wave-filtering network；It is Ro2 that the load, which is the load of Ro1 and second including the first load,；The resonance
Network includes the first resonant cavity, the second resonant cavity and third resonant cavity connecting with switching network；First resonant cavity is by
One resonant capacitance Cr1, the first resonant inductance Lr1, the first magnetizing inductance Lm1 are constituted；Second resonant cavity is by the second resonant capacitance
Cr2, the second resonant inductance Lr2, the second magnetizing inductance Lm2 are constituted；Third resonant cavity is by third resonant capacitance Cr3, third resonance
Inductance Lr3, third magnetizing inductance Lm3 are constituted.
The workflow of the present embodiment: output circuit topology incorporates the structure of half-bridge and full-bridge, two-way power conversion phase
It, can flexible design parameter to independence.Double LLC half bridge resonants of crisscross parallel are subjected to magnetic collection by the same transformer
At, reduce the quantity of magnetic element, be conducive to improve power density.The structure of crisscross parallel is conducive to input point of high current
Stream, effectively reduces switching tube current stress.Interleaving and Transformer Paralleling takes the strategy of 90 degree of phase shifting controls can effectively smaller output electricity
Current voltage ripple.Unified resonator parameter design, can reach the purpose that multiplication of voltage flows dual output again.Compared to existing 8 function
Rate device, the present embodiment only use 4 power devices, switching tube.
Specifically, third switching tube Q3 drain electrode, the 4th switching tube are connected in as Fig. 1, the first switch tube Q1 drain
Q4 source electrode is connected in second switch Q2 source electrode；The first switch tube Q1 source electrode connection second switch Q2 drain electrode, the third
Switching tube Q3 source electrode connects the 4th switching tube Q4 drain electrode.
Specifically, such as Fig. 1, the drain electrode of the one end the first resonant capacitance Cr1 connection first switch tube Q1, the other end is connected in
One end of first resonant inductance Lr1, the other end of the first resonant inductance Lr1 are connected in one end and the transformation of the first magnetizing inductance Lm1
Primary side the first winding Np1 Same Name of Ends of device T1, the other end of the first magnetizing inductance Lm1 and the first winding of primary side of transformer T1
Np1 non-same polarity is connected in third switching tube Q3 source electrode.
In detail, such as Fig. 1, the drain electrode of one end connection second switch Q2 of the second resonant capacitance Cr2, other end company
In one end of the second resonant inductance Lr2；The other end of second resonant inductance Lr2 is connected in one end and the change of the second magnetizing inductance Lm2
Primary side the second winding Np2 Same Name of Ends of depressor T1；The other end of second magnetizing inductance Lm2 and the second winding of primary side of transformer T1
Np2 non-same polarity is connected in second switch Q2 source electrode.
Specifically, such as Fig. 1, one end of the third resonant capacitance Cr3 connects third switching tube Q3 source electrode connection the 4th and opens
Pipe Q4 drain electrode is closed, the other end of third resonant capacitance Cr3 is connected in one end of third resonant inductance Lr3, third resonant inductance Lr3's
The other end is connected in one end of third magnetizing inductance Lm3 and the primary side winding Np3 of the second transformer T2；Third magnetizing inductance Lm3's
The other end of the primary side winding Np3 of the other end and the second transformer T2 are connected in second switch Q2 drain electrode.
Specifically, such as Fig. 1, the first rectifying and wave-filtering network by the first rectifier diode D1, the second rectifier diode D2,
First filter capacitor Co1 is constituted；The second rectifying and wave-filtering network by third rectifier diode D3, the 4th rectifier diode D4,
Second filter capacitor Co2 is constituted.
In detail, such as Fig. 1, the anode of the first rectifier diode D1 is connected to the first transformer of the first transformer T1
T1 vice-side winding NS1 Same Name of Ends；The cathode of first rectifier diode D1 is connected in one end of the first filter capacitor Co1 and first negative
Carry one end of Ro1；The other end of the other end of first filter capacitor Co1 and the first load Ro1 are connected in the first transformer T1
Heart tap；The anode of second rectifier diode D2 is connected in the vice-side winding NS1 non-same polarity of the first transformer T1, the second rectification two
The cathode of pole pipe D2 is connected in the one of the cathode of the first rectifier diode D1, one end of the first filter capacitor Co1 and the first load Ro1
End；The anode of third rectifier diode D3 is connected to the vice-side winding NS2 Same Name of Ends of the second transformer T2, third rectifier diode
The cathode of D3 is connected to the one of the cathode of the 4th rectifier diode D4, one end of the second filter capacitor Co2 and the second load Ro2
End；The vice-side winding of the other end and the second transformer T2 of the other end of the second filter capacitor Co2 and the second load Ro2
The connection of NS2 centre cap；The anode of 4th rectifier diode D4 is connected in the vice-side winding NS2 non-same polarity of the second transformer T2.
It is the composite bridge dual output LLC resonant converter output voltage electricity in the present embodiment by experiment simulation, such as Fig. 2
Flow waveform diagram.Fig. 3 is composite bridge dual output LLC resonant converter output voltage waveforms schematic diagram.Fig. 4 is composite bridge
Dual output LLC resonant converter output current wave schematic diagram.
Therefore, the present embodiment has reached preferable effect in less power device.Although above to the present invention
Illustrative specific embodiment is described, in order to those skilled in the art it will be appreciated that the present invention, still
The present invention is not limited only to the range of specific embodiment, for those skilled in the art, as long as various change
As long as all are created using the invention of present inventive concept in the spirit and scope of the invention that the attached claims limit and determine
Make the column in protection.
Claims (3)
1. a kind of composite bridge dual output LLC resonant converter, it is characterised in that: the composite bridge dual output LLC resonance becomes
Parallel operation includes sequentially connected input source Uin, switching network, resonant network, transformer, rectifying and wave-filtering network, load；
The transformer includes the first transformer T1 and the second transformer T2, and the first transformer is by two primary side windings Np1, Np2
It is constituted with vice-side winding Ns1, the second transformer is made of primary side winding Np3 and vice-side winding Ns2；The switching network includes the
One switching tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4；The rectifying and wave-filtering network includes first whole
Flow filter network and the second rectifying and wave-filtering network；It is Ro2 that the load, which is the load of Ro1 and second including the first load,；
The resonant network includes the first resonant cavity, the second resonant cavity and third resonant cavity connecting with switching network；
First resonant cavity is made of the first resonant capacitance Cr1, the first resonant inductance Lr1, the first magnetizing inductance Lm1；
Second resonant cavity is made of the second resonant capacitance Cr2, the second resonant inductance Lr2, the second magnetizing inductance Lm2；
Third resonant cavity is made of third resonant capacitance Cr3, third resonant inductance Lr3, third magnetizing inductance Lm3；
The first switch tube Q1 drain electrode is connected in third switching tube Q3 drain electrode, and the 4th switching tube Q4 source electrode is connected in second switch
Pipe Q2 source electrode；First switch tube Q1 source electrode connection second switch Q2 drain electrode, the third switching tube Q3 source electrode connection the
Four switching tube Q4 drain electrode；
The drain electrode of the one end first resonant capacitance Cr1 connection first switch tube Q1, the other end are connected in the first resonant inductance Lr1's
One end, the other end of the first resonant inductance Lr1 are connected in one end of the first magnetizing inductance Lm1 and the first winding of primary side of transformer T1
Np1 Same Name of Ends, the other end of the first magnetizing inductance Lm1 and primary side the first winding Np1 non-same polarity of transformer T1 are connected in third
Switching tube Q3 source electrode；
The drain electrode of one end connection second switch Q2 of the second resonant capacitance Cr2, the other end are connected in the second resonant inductance Lr2
One end；The other end of second resonant inductance Lr2 be connected in the second magnetizing inductance Lm2 one end and transformer T1 primary side second around
Group Np2 Same Name of Ends；The other end of second magnetizing inductance Lm2 and primary side the second winding Np2 non-same polarity of transformer T1 are connected in
Two switching tube Q2 source electrodes；
One end connection third switching tube Q3 source electrode of the third resonant capacitance Cr3 connects the 4th switching tube Q4 drain electrode, and third is humorous
The other end of vibration capacitor Cr3 is connected in one end of third resonant inductance Lr3, and the other end of third resonant inductance Lr3 is connected in third and encourages
The primary side winding Np3 of one end of magnetoelectricity sense Lm3 and the second transformer T2；The other end and the second transformation of third magnetizing inductance Lm3
The other end of the primary side winding Np3 of device T2 is connected in second switch Q2 drain electrode；
The vice-side winding Ns1 connection the first rectifying and wave-filtering network, vice-side winding Ns2 connection the second rectifying and wave-filtering network.
2. composite bridge dual output LLC resonant converter according to claim 1, it is characterised in that: first rectification
Filter network is made of the first rectifier diode D1, the second rectifier diode D2, the first filter capacitor Co1；Second rectification
Filter network is made of third rectifier diode D3, the 4th rectifier diode D4, the second filter capacitor Co2.
3. composite bridge dual output LLC resonant converter according to claim 2, it is characterised in that: first rectification
The anode of diode D1 is connected to the first transformer T1 secondary winding NS1 Same Name of Ends of the first transformer T1；First two poles of rectification
The cathode of pipe D1 is connected in one end of the first filter capacitor Co1 and one end of the first load Ro1；First filter capacitor Co1's is another
The other end of end and the first load Ro1 are connected in the centre cap of the first transformer T1；
The anode of second rectifier diode D2 is connected in the vice-side winding NS1 non-same polarity of the first transformer T1, the second two poles of rectification
The cathode of pipe D2 is connected in the one of the cathode of the first rectifier diode D1, one end of the first filter capacitor Co1 and the first load Ro1
End；
The anode of third rectifier diode D3 is connected to the vice-side winding NS2 Same Name of Ends of the second transformer T2, and third rectifies two poles
The cathode of pipe D3 is connected to the one of the cathode of the 4th rectifier diode D4, one end of the second filter capacitor Co2 and the second load Ro2
End；The vice-side winding of the other end and the second transformer T2 of the other end of the second filter capacitor Co2 and the second load Ro2
The connection of NS2 centre cap；
The anode of 4th rectifier diode D4 is connected in the vice-side winding NS2 non-same polarity of the second transformer T2.
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| CN110429822B (en) * | 2019-08-07 | 2021-04-02 | 西北工业大学 | T-type LLC resonant converter and control method thereof |
| CN110896211B (en) * | 2019-11-29 | 2022-05-24 | 深圳市科华恒盛科技有限公司 | Resonant circuit abnormality control circuit, control method and resonant device |
| CN110970987B (en) * | 2019-12-02 | 2023-05-12 | 重庆邮电大学 | Power management circuit with self-on-off switch capacitor network |
| CN111969853B (en) * | 2020-09-09 | 2024-06-11 | 深圳英飞源技术有限公司 | Wide-range output circuit based on double-resonance-peak topology and control method thereof |
| TWI755850B (en) * | 2020-09-09 | 2022-02-21 | 國立臺北科技大學 | Hybrid-type dc converter |
| CN116683771B (en) * | 2023-05-30 | 2024-01-23 | 西南交通大学 | Isolation type three-port converter based on double wave traps and control method thereof |
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| US6862195B2 (en) * | 1999-03-01 | 2005-03-01 | Delta Energy Systems (Switzerland) Ag | Soft transition converter |
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| JP6121827B2 (en) * | 2013-07-26 | 2017-04-26 | 日立オートモティブシステムズ株式会社 | Power converter |
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| CN201409088Y (en) * | 2009-05-08 | 2010-02-17 | 华中科技大学 | Full-bridge twin-output direct current to direct current converter |
| TWM453303U (en) * | 2012-11-08 | 2013-05-11 | Chung Shan Inst Of Science | Half bridge dual output LLC series resonant converter |
| KR20160140308A (en) * | 2015-05-29 | 2016-12-07 | 숭실대학교산학협력단 | Hybrid converter and control method thereof |
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