CN107222111A - The two-way charging device of many level of high-frequency isolation series resonance - Google Patents
The two-way charging device of many level of high-frequency isolation series resonance Download PDFInfo
- Publication number
- CN107222111A CN107222111A CN201710431228.XA CN201710431228A CN107222111A CN 107222111 A CN107222111 A CN 107222111A CN 201710431228 A CN201710431228 A CN 201710431228A CN 107222111 A CN107222111 A CN 107222111A
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- China
- Prior art keywords
- power switch
- switch pipe
- electronic power
- electronic
- converter
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Classifications
-
- 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
- H02M3/338—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 in a self-oscillating arrangement
- H02M3/3381—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 in a self-oscillating arrangement using a single commutation path
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02M3/33561—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 more than one ouput with independent 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
Abstract
The present invention relates to a kind of two-way charging device of many level of high-frequency isolation series resonance, including two-way DC converter and T-shaped three-level three-phase inverter；Two-way DC converter includes two double active H bridges series resonance DC DC converters, two DC sides of two-way DC converter are formed after two double active H bridges series resonance DC DC converter serial or parallel connections, one DC side of two-way DC converter is connected with battery pack, another DC side of two-way DC converter is connected with the DC side of T-shaped three-level three-phase inverter, and the AC of T-shaped three-level three-phase inverter is connected with power network.The present invention's can realize soft switch technique, so as to improve the efficiency of DC DC converters, and inverter performance is improved by the Level Technology of output voltage three, it can flexibly select type of attachment according to voltage range, system reliability and flexibility are improved, with good application prospect.
Description
Technical field
The present invention relates to a kind of for connecting power network and battery pack and realizing that the high-frequency isolation series connection of bidirectional electric energy flowing is humorous
Shake the two-way charging device of many level.
Background technology
With the growing tension of the worldwide petrochemical energy, in the urgent need to renewable and clean energy resource.With new energy energy storage, electronic vapour
Car, hybrid vehicle are flourished and extensive concern for the new energy application technology of representative.As obtained in recent years extensively
V2G (vehicle-to-grid) system of concern, the system can realize the interface of electric automobile and power network.V2G systems
Efficiency, weight, volume, harmonic wave etc. directly affect whole charge-discharge system.
At present, the DC-DC converter for the charger of electric automobile uses double active H bridges, realizes electric automobile electricity
Pond and the isolation of power network.But high-frequency isolation DC-DC converter is realized using hard switching, cause its switching loss than larger.Separately
Outside, two level PWM voltage source inverters are generally used for the DC-AC inverter in the charger of electric automobile, with many level phases
Than with power electronic devices voltage stress is big, inverter output voltage waveform total harmonic distortion factor is big, electromagnetic interference big, damage
Consumption is big to wait not enough.Meanwhile, traditional single-phase high frequency isolation AC-DC converters are widely used in charging electric vehicle and uninterrupted
In the systems such as power supply, the two-way flow of energy is realized.Such as the patent of invention of Application No. 201110167515.7《A kind of electronic vapour
Car vehicle-mounted bidirectional charger》In a kind of vehicle-mounted bidirectional charger for electric automobile, including：AC/DC converters, DC/DC conversion
Device, microprocessor control circuit and filter circuit.The DC/DC converters of patent medium-high frequency isolation are using double active H bridges.But
The DC/DC converters of the high-frequency isolation of the patent are not carried out zero voltage turn-off, so as to cause transducer effciency low.For another example Shen
Please number patent of invention for being 201310199098.3《A kind of two-way charging device and system》In invented a kind of two-way charging dress
Put and system, realize the two-way flow of energy.The DC-DC converters of the patent are not carried out high-frequency isolation, DC-AC inverter
For two level PWM voltage source inverters, cause the efficiency of system low.Therefore, high efficiency isolation DC-DC and DC-AC inverter topology knot
The key link for being selected to charging system for electric automobile and new energy energy-storage system of structure.And do not take into account in the prior art
The topological structure of various aspects of performance.
The content of the invention
It is an object of the invention to provide it is a kind of have efficiency high, good inversion performance, reliability and the high high frequency of flexibility every
From the two-way charging device of many level of series resonance.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
The two-way charging device of a kind of many level of high-frequency isolation series resonance, for connecting power network and battery pack and realizing bidirectional electric energy
Flowing, the two-way charging device of many level of high-frequency isolation series resonance includes two-way DC converter and T-shaped three-level three-phase
Inverter；
The two-way DC converter includes two double active H bridges series resonant DC-DC converters, two double active H bridges
Two DC sides of the two-way DC converter are formed after series resonant DC-DC converter serial or parallel connection, it is described two-way straight
One DC side of current converter is connected with the battery pack, another described direct current of the two-way DC converter
Side is connected with the DC side of the T-shaped three-level three-phase inverter, the AC of the T-shaped three-level three-phase inverter and institute
Power network is stated to be connected.
It is preferred that, each double active H bridges series resonant DC-DC converters have the first DC sides and the 2nd DC sides, institute
The first DC sides are stated with the first plus end and the first negative terminal, the 2nd DC sides have the second plus end and the second negative terminal；
Two double active H bridges series resonant DC-DC converters are respectively first pair of active H bridges series resonant DC-DC conversion
Device and second pair of active H bridges series resonant DC-DC converter,
When two double active H bridges series resonant DC-DC converter series connection, first couple of active H bridges series resonance DC-
First negative terminal of DC converters is connected with the first plus end of described second pair active H bridges series resonant DC-DC converter,
First plus end of first pair of active H bridges series resonant DC-DC converter is connected with the positive pole of the battery pack, described
First negative terminal of second pair of active H bridges series resonant DC-DC converter is connected with the negative pole of the battery pack；Described first
Second negative terminal of double active H bridges series resonant DC-DC converters and second pair of active H bridges series resonant DC-DC conversion
Second plus end of device is connected, the second plus end and the T of first pair of active H bridges series resonant DC-DC converter
The DC side positive pole of type three-level three-phase inverter is connected, and the of second pair of active H bridges series resonant DC-DC converter
Two negative terminals are connected with the DC side negative pole of the T-shaped three-level three-phase inverter；
When two double active H bridges series resonant DC-DC converter parallel connections, first couple of active H bridges series resonance DC-
First plus end of DC converters is connected with the first plus end of described second pair active H bridges series resonant DC-DC converter
And it is connected to the positive pole of the battery pack, the first negative terminal of first pair of active H bridges series resonant DC-DC converter and institute
The first negative terminal for stating second pair of active H bridges series resonant DC-DC converter is connected and is connected to the negative pole of the battery pack；
Second negative terminal of first pair of active H bridges series resonant DC-DC converter and second pair of active H bridges series resonance
Second plus end of DC-DC converter is connected, the second anode of first pair of active H bridges series resonant DC-DC converter
The sub DC side positive pole with the T-shaped three-level three-phase inverter is connected, second pair of active H bridges series resonant DC-DC
Second negative terminal of converter is connected with the DC side negative pole of the T-shaped three-level three-phase inverter.
It is preferred that, double active H bridges series resonant DC-DC converters include the first H-bridge circuit and the first H bridges
Series resonance inductor that circuit is connected, the series resonant capacitance being connected with first H-bridge circuit, with the series resonance
Inductance and the series resonance are electrically connected the transformer connect and the second H-bridge circuit being connected with the transformer.
It is preferred that, first H-bridge circuit includes electronic power switch pipe S1, electronic power switch pipe S2, power electronics
Switching tube S3, electronic power switch pipe S4；
One end of the electronic power switch pipe S1 is connected with one end of the electronic power switch pipe S2 and constitutes described
One bridge arm of one H-bridge circuit, one end of the electronic power switch pipe S3 and the electronic power switch pipe S4 one end phase
Connect and constitute another bridge arm of first H-bridge circuit, the other end and the electric power of the electronic power switch pipe S1
The electronic switching tube S3 other end is connected and formed the first plus end of double active H bridges series resonant DC-DC converters；
The electronic power switch pipe S1 and the electronic power switch pipe S2 common end and one end phase of the series resonance inductor
Connection, the electronic power switch pipe S3 and the electronic power switch pipe S4 common end and the one of the series resonant capacitance
End is connected, the other end of the series resonance inductor, the series resonant capacitance the other end respectively with the transformer
The two ends of primary side are connected；
Second H-bridge circuit includes electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electricity
Power electronic switching tube S8；
One end of the electronic power switch pipe S5 is connected with one end of the electronic power switch pipe S6 and constitutes described
One bridge arm of two H-bridge circuits, one end of the electronic power switch pipe S7 and one end phase of the electronic power switch pipe S8
Connect and constitute another bridge arm of second H-bridge circuit, the electronic power switch pipe S5 and the electronic power switch
Pipe S6 common end, the electronic power switch pipe S7 and the electronic power switch pipe S8 common end respectively with the transformation
The two ends of the secondary of device are connected；The other end of the electronic power switch pipe S5 is another with the electronic power switch pipe S7's
End is connected and formed the second plus end of double active H bridges series resonant DC-DC converters, the electronic power switch pipe
The S6 other end is connected with the other end of the electronic power switch pipe S8 and constitutes double active H bridges series resonance DC-
Second negative terminal of DC converters.
It is preferred that, the electronic power switch pipe S1, the electronic power switch pipe S2, the electronic power switch pipe
S3, the electronic power switch pipe S4, the electronic power switch pipe S5, the electronic power switch pipe S6, electric power electricity
Sub switch pipe S7, the electronic power switch pipe S8 are electric metal oxide semiconductor field effect transistor；
The source electrode of the electronic power switch pipe S1 is connected with the drain electrode of the electronic power switch pipe S2, the power electronics
Switching tube S3 source electrode is connected with the drain electrode of the electronic power switch pipe S4, the drain electrode of the electronic power switch pipe S1 with
The drain electrode of the electronic power switch pipe S3 is connected, source electrode and the electronic power switch of the electronic power switch pipe S2
Pipe S4 source electrode is connected；
The source electrode of the electronic power switch pipe S5 is connected with the drain electrode of the electronic power switch pipe S6, the power electronics
Switching tube S7 source electrode is connected with the drain electrode of the electronic power switch pipe S8, the drain electrode of the electronic power switch pipe S5 with
The drain electrode of the electronic power switch pipe S7 is connected, source electrode and the electronic power switch of the electronic power switch pipe S6
Pipe S8 source electrode is connected.
It is preferred that, the electronic power switch pipe S1, the electronic power switch pipe S2, the electronic power switch pipe
S3, the electronic power switch pipe S4, the electronic power switch pipe S5, the electronic power switch pipe S6, electric power electricity
Sub switch pipe S7, the electronic power switch pipe S8 are parallel with diode between source electrode and drain electrode.
It is preferred that, the T-shaped three-level three-phase inverter includes electronic power switch pipe Sa1, electronic power switch pipe
Sa2, electronic power switch pipe Sa3, electronic power switch pipe Sa4, electronic power switch pipe Sb1, electronic power switch pipe Sb2,
Electronic power switch pipe Sb3, electronic power switch pipe Sb4, electronic power switch pipe Sc1, electronic power switch pipe Sc2, electric power
Electronic switching tube Sc3, electronic power switch pipe Sc4；
One end of the electronic power switch pipe Sa1 is connected with one end of the electronic power switch pipe Sa4, the electric power electricity
Sub switch pipe Sb1 one end is connected with one end of the electronic power switch pipe Sb4, the electronic power switch pipe Sc1's
One end is connected with one end of the electronic power switch pipe Sc4, the other end, the electricity of the electronic power switch pipe Sa1
The power electronic switching tube Sb1 other end, the other end of the electronic power switch pipe Sc1 are connected and constitute T-shaped three electricity
The DC side positive pole of flat three-phase inverter, the other end of the electronic power switch pipe Sa4, the electronic power switch pipe Sb4
The other end, the other end of the electronic power switch pipe Sc4 is connected and constitutes the straight of the T-shaped three-level three-phase inverter
Flow side negative pole；
One end of the electronic power switch pipe Sa2 is connected with one end of the electronic power switch pipe Sa3, the electric power electricity
Sub switch pipe Sb2 one end is connected with one end of the electronic power switch pipe Sb3, the electronic power switch pipe Sc2's
One end is connected with one end of the electronic power switch pipe Sc3, the other end, the electricity of the electronic power switch pipe Sa2
The power electronic switching tube Sb2 other end, the other end of the electronic power switch pipe Sc2 are connected and are connected to described T-shaped three
The DC side neutral point of level three-phase inverter, the other end and the electronic power switch of the electronic power switch pipe Sa3
Pipe Sa1 is connected with the common end of the electronic power switch pipe Sa4, the other end of the electronic power switch pipe Sb3 and institute
The common end that electronic power switch pipe Sb1 is stated with the electronic power switch pipe Sb4 is connected, the electronic power switch pipe
The Sc3 other end is connected with the electronic power switch pipe Sc1 and the electronic power switch pipe Sc4 common end, described
Electronic power switch pipe Sa1 and the electronic power switch pipe Sa4 common end, the electronic power switch pipe Sb1 and described
Electronic power switch pipe Sb4 common end, the electronic power switch pipe Sc1 and the electronic power switch pipe Sc4 it is common
End collectively forms the AC of the T-shaped three-level three-phase inverter.
It is preferred that, the electronic power switch pipe Sa1, the electronic power switch pipe Sa2, the electronic power switch pipe
Sa3, the electronic power switch pipe Sa4, the electronic power switch pipe Sb1, the electronic power switch pipe Sb2, the electricity
Power electronic switching tube Sb3, the electronic power switch pipe Sb4, the electronic power switch pipe Sc1, the electronic power switch
Pipe Sc2, the electronic power switch pipe Sc3, the electronic power switch pipe Sc4 are insulated gate bipolar transistor；
The source electrode of the electronic power switch pipe Sa1 is connected with the drain electrode of the electronic power switch pipe Sa4, the electric power electricity
Sub switch pipe Sb1 source electrode is connected with the drain electrode of the electronic power switch pipe Sb4, the electronic power switch pipe Sc1's
Source electrode is connected with the drain electrode of the electronic power switch pipe Sc4, the draining of the electronic power switch pipe Sa1, the electric power
The draining of electronic switching tube Sb1, the drain electrode of the electronic power switch pipe Sc1 is connected, the electronic power switch pipe Sa4's
Source electrode, the source electrode of the electronic power switch pipe Sb4, the source electrode of the electronic power switch pipe Sc4 are connected；
The source electrode of the electronic power switch pipe Sa2 is connected with the source electrode of the electronic power switch pipe Sa3, the electric power electricity
Sub switch pipe Sb2 source electrode is connected with the source electrode of the electronic power switch pipe Sb3, the electronic power switch pipe Sc2's
Source electrode is connected with the source electrode of the electronic power switch pipe Sc3, the draining of the electronic power switch pipe Sa2, the electric power
The draining of electronic switching tube Sb2, the drain electrode of the electronic power switch pipe Sc2 is connected, the electronic power switch pipe Sa3's
Drain electrode and the source electrode of the electronic power switch pipe Sa1, the drain electrode of the electronic power switch pipe Sb3 are opened with the power electronics
The source electrode for closing pipe Sb1 is connected, the drain electrode of the electronic power switch pipe Sc3 and the source electrode of the electronic power switch pipe Sc1
It is connected.
It is preferred that, the electronic power switch pipe Sa1, the electronic power switch pipe Sa2, the electronic power switch pipe
Sa3, the electronic power switch pipe Sa4, the electronic power switch pipe Sb1, the electronic power switch pipe Sb2, the electricity
Power electronic switching tube Sb3, the electronic power switch pipe Sb4, the electronic power switch pipe Sc1, the electronic power switch
Pipe Sc2, the electronic power switch pipe Sc3, the electronic power switch pipe Sc4 are parallel with two poles between source electrode and drain electrode
Pipe.
It is preferred that, the filtered inductance of AC of the T-shaped three-level three-phase inverter and be connected with the power network.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：The topology knot of the present invention
Structure can realize soft switch technique, so as to improve the efficiency of DC-DC converter, and be improved by the Level Technology of output voltage three
Inverter performance, it can flexibly select type of attachment according to voltage range, improve system reliability and flexibility, with very
Good application prospect.
Brief description of the drawings
Accompanying drawing 1 is the system architecture of the two-way charging device of many level of high-frequency isolation series resonance of embodiments of the invention one
Figure.
Accompanying drawing 2 is the system architecture of the two-way charging device of many level of high-frequency isolation series resonance of embodiments of the invention two
Figure.
Accompanying drawing 3 is double active H bridges series resonances in the two-way charging device of many level of high-frequency isolation series resonance of the present invention
The circuit diagram of DC-DC converter.
Accompanying drawing 4 is T-shaped three-level three-phase inversion in the two-way charging device of many level of high-frequency isolation series resonance of the present invention
The circuit diagram of device.
Embodiment
The invention will be further described for shown embodiment below in conjunction with the accompanying drawings.
Embodiment one：As shown in Figure 1, a kind of high frequency for being used to connect power network and battery pack and realize bidirectional electric energy flowing
Isolate the two-way charging device of many level of series resonance, including two-way DC converter and T-shaped three-level three-phase inverter.T-shaped three
The end of AC three of level three-phase inverter respectively filtered inductance L and be connected with power network.Battery pack works in the present embodiment
In high pressure range（Such as 400-700V）.
Two-way DC converter includes two double active H bridges series resonant DC-DC converters, respectively first couple active H
Bridge series resonant DC-DC converter and second pair of active H bridges series resonant DC-DC converter.Two double active H bridges series resonances
Two DC sides of two-way DC converter are formed after DC-DC converter series connection.One DC side of two-way DC converter with
Battery pack is connected, and another DC side of two-way DC converter is connected with the DC side of T-shaped three-level three-phase inverter.
And the AC of T-shaped three-level three-phase inverter is connected with power network.
Specifically, each double active H bridges series resonant DC-DC converters are respectively provided with the first DC sides and the 2nd DC sides, first
DC sides have first plus end P1, P2 and first negative terminal N1, N2, and the 2nd DC sides have second plus end P3, P4 and second negative
Terminal N3, N4.Then the first negative terminal N1 and second pair of active H bridge of first pair of active H bridges series resonant DC-DC converter connect
First plus end P2 of resonance DC-DC converter is connected, first pair of active H bridges series resonant DC-DC converter first just
Terminals P 1 is connected with the positive pole of battery pack, the first negative terminal N2 and the electricity of second pair of active H bridges series resonant DC-DC converter
The negative pole of pond group is connected.The the second negative terminal N3 and second couple of active H of first pair of active H bridges series resonant DC-DC converter
Second plus end P4 of bridge series resonant DC-DC converter is connected, the first pair of active H bridges series resonant DC-DC converter
Second plus end P3 is connected with the DC side positive pole P of T-shaped three-level three-phase inverter, second couple of active H bridges series resonance DC-
Second negative terminal N4 of DC converters is connected with the DC side negative pole N of T-shaped three-level three-phase inverter.
Embodiment two：As shown in Figure 2, when battery pack is operated in low pressure range（Such as 200-400V）When, high-frequency isolation string
In the two-way DC converter for joining the two-way charging device of many level of resonance, two double active H bridges series resonant DC-DC converters are simultaneously
Two DC sides of two-way DC converter are formed after connection.First anode of first pair of active H bridges series resonant DC-DC converter
First plus end P2 of sub- P1 and second pair of active H bridges series resonant DC-DC converter is connected and is connected to battery pack just
Pole, the first negative terminal N1 and second pair of active H bridges series resonant DC-DC of first pair of active H bridges series resonant DC-DC converter
First negative terminal N2 of converter is connected and is connected to the negative pole of battery pack.First pair of active H bridges series resonant DC-DC conversion
Second plus end P4 of the second negative terminal N3 of device and second pair of active H bridges series resonant DC-DC converter is connected, first pair
Second plus end P3 of active H bridges series resonant DC-DC converter and T-shaped three-level three-phase inverter DC side positive pole P phases
Connection, the second negative terminal N4 of second pair of active H bridges series resonant DC-DC converter is straight with T-shaped three-level three-phase inverter
Stream side negative pole N is connected.
As shown in Figure 3, double active H bridges series resonant DC-DC converters in both examples above include the first H bridges
Circuit, the series resonance inductor Lr being connected with the first H-bridge circuit, the series resonant capacitance Cr being connected with the first H-bridge circuit,
Be electrically connected the transformer Tr connect and the second H-bridge circuit being connected with transformer Tr with series resonance inductor and series resonance.
The input capacitance of double active H bridges series resonant DC-DC converters is Cin, and output filter capacitor is Co.
First H-bridge circuit includes electronic power switch pipe S1, electronic power switch pipe S2, electronic power switch pipe S3, electricity
Power electronic switching tube S4.Electronic power switch pipe S1 one end is connected with electronic power switch pipe S2 one end and constitutes first
One bridge arm of H-bridge circuit, electronic power switch pipe S3 one end is connected and constituted with electronic power switch pipe S4 one end
Another bridge arm of the first H-bridge circuit, the other end phase of electronic power switch pipe the S1 other end and electronic power switch pipe S3
Connect and formed the first plus end of double active H bridges series resonant DC-DC converters；Electronic power switch pipe S1 and power electronics
Switching tube S2 common end is connected with series resonance inductor Lr one end, electronic power switch pipe S3 and electronic power switch pipe
S4 common end is connected with series resonant capacitance Cr one end, series resonance inductor the Lr other end, series resonant capacitance Cr
Two ends of the other end respectively with transformer Tr primary side be connected.Specifically include electronic power switch pipe S1 source electrode and electric power
Electronic switching tube S2 drain electrode is connected, and electronic power switch pipe S3 source electrode is connected with electronic power switch pipe S4 drain electrode
Connect, electronic power switch pipe S1 drain electrode is connected with electronic power switch pipe S3 drain electrode, electronic power switch pipe S2 source
Pole is connected with electronic power switch pipe S4 source electrode.
Second H-bridge circuit includes electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electricity
Power electronic switching tube S8.Electronic power switch pipe S5 one end is connected with electronic power switch pipe S6 one end and constitutes second
One bridge arm of H-bridge circuit, electronic power switch pipe S7 one end is connected and constituted with electronic power switch pipe S8 one end
Another bridge arm of the second H-bridge circuit, electronic power switch pipe S5 and electronic power switch pipe S6 common end, power electronics are opened
Two ends of the pipe S7 with electronic power switch pipe S8 common end respectively with transformer Tr secondary are closed to be connected；Electronic power switch
The pipe S5 other end is connected with the electronic power switch pipe S7 other end and forms double active H bridges series resonant DC-DC conversion
Second plus end of device, the electronic power switch pipe S6 other end is connected and constituted with the electronic power switch pipe S8 other end
Second negative terminal of double active H bridges series resonant DC-DC converters.Specifically include electronic power switch pipe S5 source electrode and electric power
Electronic switching tube S6 drain electrode is connected, and electronic power switch pipe S7 source electrode is connected with electronic power switch pipe S8 drain electrode
Connect, electronic power switch pipe S5 drain electrode is connected with electronic power switch pipe S7 drain electrode, electronic power switch pipe S6 source
Pole is connected with electronic power switch pipe S8 source electrode.
Electronic power switch pipe S1, electronic power switch pipe S2, electronic power switch pipe S3, electronic power switch pipe S4,
Electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electronic power switch pipe S8 are high frequency gold
Belong to oxide semiconductor field effect transistor（Metal-Oxide-Semiconductor Field Effect Transistor,
MOSFET）, and electronic power switch pipe S1, electronic power switch pipe S2, electronic power switch pipe S3, electronic power switch pipe
S4, electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electronic power switch pipe S8 are in source
Diode is parallel between pole and drain electrode.By controlling electronic power switch pipe S1, electronic power switch pipe S2, power electronics to open
Close pipe S3, electronic power switch pipe S4, electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electricity
Power electronic switching tube S8 can realize DC-DC conversion and series resonance soft switch technique.
As shown in Figure 4, T-shaped three-level three-phase inverter includes electronic power switch pipe Sa1, electronic power switch pipe
Sa2, electronic power switch pipe Sa3, electronic power switch pipe Sa4, electronic power switch pipe Sb1, electronic power switch pipe Sb2,
Electronic power switch pipe Sb3, electronic power switch pipe Sb4, electronic power switch pipe Sc1, electronic power switch pipe Sc2, electric power
Electronic switching tube Sc3, electronic power switch pipe Sc4.
Electronic power switch pipe Sa1 one end is connected with electronic power switch pipe Sa4 one end, electronic power switch pipe
Sb1 one end is connected with electronic power switch pipe Sb4 one end, and electronic power switch pipe Sc1 one end is opened with power electronics
The one end for closing pipe Sc4 is connected, electronic power switch pipe the Sa1 other end, electronic power switch pipe the Sb1 other end, electric power
The electronic switching tube Sc1 other end is connected and constituted the DC side positive pole P of T-shaped three-level three-phase inverter, and power electronics is opened
The other end, the electronic power switch pipe Sb4 other end, the electronic power switch pipe Sc4 other end for closing pipe Sa4 are connected and structure
Into the DC side negative pole N of T-shaped three-level three-phase inverter.Electronic power switch pipe Sa2 one end and electronic power switch pipe Sa3
One end be connected, electronic power switch pipe Sb2 one end is connected with electronic power switch pipe Sb3 one end, power electronics
Switching tube Sc2 one end is connected with electronic power switch pipe Sc3 one end, electronic power switch pipe the Sa2 other end, electric power
The electronic switching tube Sb2 other end, the electronic power switch pipe Sc2 other end is connected and to be connected to T-shaped three-level three-phase inverse
Become the DC side neutral point O of device, electronic power switch pipe the Sa3 other end and electronic power switch pipe Sa1 and power electronics are opened
The common end for closing pipe Sa4 is connected to form an ac terminal A, and the electronic power switch pipe Sb3 other end is opened with power electronics
Pipe Sb1 is closed to be connected to form an ac terminal B with electronic power switch pipe Sb4 common end, electronic power switch pipe Sc3's
The other end is connected to form an ac terminal C with electronic power switch pipe Sc1 and electronic power switch pipe Sc4 common end.
Electronic power switch pipe Sa1 and electronic power switch pipe Sa4 common end, electronic power switch pipe Sb1 and electronic power switch
The common end at pipe Sb4 common end, electronic power switch pipe Sc1 and electronic power switch pipe Sc4, i.e. ac terminal A, exchange end
Sub- B, ac terminal C collectively form the AC of T-shaped three-level three-phase inverter.Specifically include electronic power switch pipe Sa1's
Source electrode is connected with electronic power switch pipe Sa4 drain electrode, electronic power switch pipe Sb1 source electrode and electronic power switch pipe
Sb4 drain electrode is connected, and electronic power switch pipe Sc1 source electrode is connected with electronic power switch pipe Sc4 drain electrode, electric power electricity
Sub switch pipe Sa1 drain electrode, electronic power switch pipe Sb1 drain electrode, electronic power switch pipe Sc1 drain electrode is connected, electric power
Electronic switching tube Sa4 source electrode, electronic power switch pipe Sb4 source electrode, electronic power switch pipe Sc4 source electrode is connected.Electricity
Power electronic switching tube Sa2 source electrode is connected with electronic power switch pipe Sa3 source electrode, electronic power switch pipe Sb2 source electrode
It is connected with electronic power switch pipe Sb3 source electrode, electronic power switch pipe Sc2 source electrode is with electronic power switch pipe Sc3's
Source electrode is connected, electronic power switch pipe Sa2 drain electrode, electronic power switch pipe Sb2 drain electrode, electronic power switch pipe Sc2
Drain electrode be connected, electronic power switch pipe Sa3 drain electrode and electronic power switch pipe Sa1 source electrode, electronic power switch pipe
Sb3 drain electrode is connected with electronic power switch pipe Sb1 source electrode, and electronic power switch pipe Sc3 drain electrode is opened with power electronics
The source electrode for closing pipe Sc1 is connected.
Electronic power switch pipe Sa1, electronic power switch pipe Sa2, electronic power switch pipe Sa3, electronic power switch pipe
Sa4, electronic power switch pipe Sb1, electronic power switch pipe Sb2, electronic power switch pipe Sb3, electronic power switch pipe Sb4,
Electronic power switch pipe Sc1, electronic power switch pipe Sc2, electronic power switch pipe Sc3, electronic power switch pipe Sc4 are exhausted
Edge grid bipolar transistor（Insulated Gate Bipolar Transistor,IGBT）, and electronic power switch pipe Sa1,
Electronic power switch pipe Sa2, electronic power switch pipe Sa3, electronic power switch pipe Sa4, electronic power switch pipe Sb1, electric power
Electronic switching tube Sb2, electronic power switch pipe Sb3, electronic power switch pipe Sb4, electronic power switch pipe Sc1, power electronics
Switching tube Sc2, electronic power switch pipe Sc3, electronic power switch pipe Sc4 are parallel with diode between source electrode and drain electrode.
Above topology structure realizes the high-frequency isolation and series resonance soft switch technique of DC-DC converter, substantially increases
The efficiency of DC-DC converter；In addition, the DC-AC inverter of the topological structure realizes the level of output voltage three, inversion is improved
The performance of device；Finally, the invention topological structure can flexibly be gone here and there or in parallel according to the voltage range of battery pack,
Improve reliability and the flexibility of system.Therefore, the topological structure in new energy energy-storage system（Such as electric automobile, photovoltaic
Energy-storage system etc.）There is good application prospect.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (10)
1. the two-way charging device of a kind of many level of high-frequency isolation series resonance, for connecting power network and battery pack and realizing two-way electricity
It can flow, it is characterised in that：The two-way charging device of many level of high-frequency isolation series resonance includes two-way DC converter and T
Type three-level three-phase inverter；
The two-way DC converter includes two double active H bridges series resonant DC-DC converters, two double active H bridges
Two DC sides of the two-way DC converter are formed after series resonant DC-DC converter serial or parallel connection, it is described two-way straight
One DC side of current converter is connected with the battery pack, another described direct current of the two-way DC converter
Side is connected with the DC side of the T-shaped three-level three-phase inverter, the AC of the T-shaped three-level three-phase inverter and institute
Power network is stated to be connected.
2. the two-way charging device of many level of high-frequency isolation series resonance according to claim 1, it is characterised in that：Each institute
Stating double active H bridges series resonant DC-DC converters has the first DC sides and the 2nd DC sides, and the first DC sides have the first anode
Son and the first negative terminal, the 2nd DC sides have the second plus end and the second negative terminal；
Two double active H bridges series resonant DC-DC converters are respectively first pair of active H bridges series resonant DC-DC conversion
Device and second pair of active H bridges series resonant DC-DC converter,
When two double active H bridges series resonant DC-DC converter series connection, first couple of active H bridges series resonance DC-
First negative terminal of DC converters is connected with the first plus end of described second pair active H bridges series resonant DC-DC converter,
First plus end of first pair of active H bridges series resonant DC-DC converter is connected with the positive pole of the battery pack, described
First negative terminal of second pair of active H bridges series resonant DC-DC converter is connected with the negative pole of the battery pack；Described first
Second negative terminal of double active H bridges series resonant DC-DC converters and second pair of active H bridges series resonant DC-DC conversion
Second plus end of device is connected, the second plus end and the T of first pair of active H bridges series resonant DC-DC converter
The DC side positive pole of type three-level three-phase inverter is connected, and the of second pair of active H bridges series resonant DC-DC converter
Two negative terminals are connected with the DC side negative pole of the T-shaped three-level three-phase inverter；
When two double active H bridges series resonant DC-DC converter parallel connections, first couple of active H bridges series resonance DC-
First plus end of DC converters is connected with the first plus end of described second pair active H bridges series resonant DC-DC converter
And it is connected to the positive pole of the battery pack, the first negative terminal of first pair of active H bridges series resonant DC-DC converter and institute
The first negative terminal for stating second pair of active H bridges series resonant DC-DC converter is connected and is connected to the negative pole of the battery pack；
Second negative terminal of first pair of active H bridges series resonant DC-DC converter and second pair of active H bridges series resonance
Second plus end of DC-DC converter is connected, the second anode of first pair of active H bridges series resonant DC-DC converter
The sub DC side positive pole with the T-shaped three-level three-phase inverter is connected, second pair of active H bridges series resonant DC-DC
Second negative terminal of converter is connected with the DC side negative pole of the T-shaped three-level three-phase inverter.
3. the two-way charging device of many level of high-frequency isolation series resonance according to claim 2, it is characterised in that：It is described double
The series resonance electricity that active H bridges series resonant DC-DC converter includes the first H-bridge circuit, is connected with first H-bridge circuit
Sense, the series resonant capacitance being connected with first H-bridge circuit and the series resonance inductor and the electric phase of the series resonance
The transformer of connection and the second H-bridge circuit being connected with the transformer.
4. the two-way charging device of many level of high-frequency isolation series resonance according to claim 3, it is characterised in that：Described
One H-bridge circuit includes electronic power switch pipe S1, electronic power switch pipe S2, electronic power switch pipe S3, electronic power switch
Pipe S4；
One end of the electronic power switch pipe S1 is connected with one end of the electronic power switch pipe S2 and constitutes described
One bridge arm of one H-bridge circuit, one end of the electronic power switch pipe S3 and the electronic power switch pipe S4 one end phase
Connect and constitute another bridge arm of first H-bridge circuit, the other end and the electric power of the electronic power switch pipe S1
The electronic switching tube S3 other end is connected and formed the first plus end of double active H bridges series resonant DC-DC converters；
The electronic power switch pipe S1 and the electronic power switch pipe S2 common end and one end phase of the series resonance inductor
Connection, the electronic power switch pipe S3 and the electronic power switch pipe S4 common end and the one of the series resonant capacitance
End is connected, the other end of the series resonance inductor, the series resonant capacitance the other end respectively with the transformer
The two ends of primary side are connected；
Second H-bridge circuit includes electronic power switch pipe S5, electronic power switch pipe S6, electronic power switch pipe S7, electricity
Power electronic switching tube S8；
One end of the electronic power switch pipe S5 is connected with one end of the electronic power switch pipe S6 and constitutes described
One bridge arm of two H-bridge circuits, one end of the electronic power switch pipe S7 and one end phase of the electronic power switch pipe S8
Connect and constitute another bridge arm of second H-bridge circuit, the electronic power switch pipe S5 and the electronic power switch
Pipe S6 common end, the electronic power switch pipe S7 and the electronic power switch pipe S8 common end respectively with the transformation
The two ends of the secondary of device are connected；The other end of the electronic power switch pipe S5 is another with the electronic power switch pipe S7's
End is connected and formed the second plus end of double active H bridges series resonant DC-DC converters, the electronic power switch pipe
The S6 other end is connected with the other end of the electronic power switch pipe S8 and constitutes double active H bridges series resonance DC-
Second negative terminal of DC converters.
5. the two-way charging device of many level of high-frequency isolation series resonance according to claim 4, it is characterised in that：The electricity
Power electronic switching tube S1, the electronic power switch pipe S2, the electronic power switch pipe S3, the electronic power switch pipe
S4, the electronic power switch pipe S5, the electronic power switch pipe S6, the electronic power switch pipe S7, electric power electricity
Sub switch pipe S8 is electric metal oxide semiconductor field effect transistor；
The source electrode of the electronic power switch pipe S1 is connected with the drain electrode of the electronic power switch pipe S2, the power electronics
Switching tube S3 source electrode is connected with the drain electrode of the electronic power switch pipe S4, the drain electrode of the electronic power switch pipe S1 with
The drain electrode of the electronic power switch pipe S3 is connected, source electrode and the electronic power switch of the electronic power switch pipe S2
Pipe S4 source electrode is connected；
The source electrode of the electronic power switch pipe S5 is connected with the drain electrode of the electronic power switch pipe S6, the power electronics
Switching tube S7 source electrode is connected with the drain electrode of the electronic power switch pipe S8, the drain electrode of the electronic power switch pipe S5 with
The drain electrode of the electronic power switch pipe S7 is connected, source electrode and the electronic power switch of the electronic power switch pipe S6
Pipe S8 source electrode is connected.
6. the two-way charging device of many level of high-frequency isolation series resonance according to claim 5, it is characterised in that：The electricity
Power electronic switching tube S1, the electronic power switch pipe S2, the electronic power switch pipe S3, the electronic power switch pipe
S4, the electronic power switch pipe S5, the electronic power switch pipe S6, the electronic power switch pipe S7, electric power electricity
Sub switch pipe S8 is parallel with diode between source electrode and drain electrode.
7. the two-way charging device of many level of high-frequency isolation series resonance according to any one of claim 2 to 6, its feature
It is：The T-shaped three-level three-phase inverter includes electronic power switch pipe Sa1, electronic power switch pipe Sa2, power electronics
Switching tube Sa3, electronic power switch pipe Sa4, electronic power switch pipe Sb1, electronic power switch pipe Sb2, electronic power switch
Pipe Sb3, electronic power switch pipe Sb4, electronic power switch pipe Sc1, electronic power switch pipe Sc2, electronic power switch pipe
Sc3, electronic power switch pipe Sc4；
One end of the electronic power switch pipe Sa1 is connected with one end of the electronic power switch pipe Sa4, the electric power electricity
Sub switch pipe Sb1 one end is connected with one end of the electronic power switch pipe Sb4, the electronic power switch pipe Sc1's
One end is connected with one end of the electronic power switch pipe Sc4, the other end, the electricity of the electronic power switch pipe Sa1
The power electronic switching tube Sb1 other end, the other end of the electronic power switch pipe Sc1 are connected and constitute T-shaped three electricity
The DC side positive pole of flat three-phase inverter, the other end of the electronic power switch pipe Sa4, the electronic power switch pipe Sb4
The other end, the other end of the electronic power switch pipe Sc4 is connected and constitutes the straight of the T-shaped three-level three-phase inverter
Flow side negative pole；
One end of the electronic power switch pipe Sa2 is connected with one end of the electronic power switch pipe Sa3, the electric power electricity
Sub switch pipe Sb2 one end is connected with one end of the electronic power switch pipe Sb3, the electronic power switch pipe Sc2's
One end is connected with one end of the electronic power switch pipe Sc3, the other end, the electricity of the electronic power switch pipe Sa2
The power electronic switching tube Sb2 other end, the other end of the electronic power switch pipe Sc2 are connected and are connected to described T-shaped three
The DC side neutral point of level three-phase inverter, the other end and the electronic power switch of the electronic power switch pipe Sa3
Pipe Sa1 is connected with the common end of the electronic power switch pipe Sa4, the other end of the electronic power switch pipe Sb3 and institute
The common end that electronic power switch pipe Sb1 is stated with the electronic power switch pipe Sb4 is connected, the electronic power switch pipe
The Sc3 other end is connected with the electronic power switch pipe Sc1 and the electronic power switch pipe Sc4 common end, described
Electronic power switch pipe Sa1 and the electronic power switch pipe Sa4 common end, the electronic power switch pipe Sb1 and described
Electronic power switch pipe Sb4 common end, the electronic power switch pipe Sc1 and the electronic power switch pipe Sc4 it is common
End collectively forms the AC of the T-shaped three-level three-phase inverter.
8. the two-way charging device of many level of high-frequency isolation series resonance according to claim 7, it is characterised in that：The electricity
Power electronic switching tube Sa1, the electronic power switch pipe Sa2, the electronic power switch pipe Sa3, the electronic power switch
It is pipe Sa4, the electronic power switch pipe Sb1, the electronic power switch pipe Sb2, the electronic power switch pipe Sb3, described
Electronic power switch pipe Sb4, the electronic power switch pipe Sc1, the electronic power switch pipe Sc2, the power electronics are opened
It is insulated gate bipolar transistor to close pipe Sc3, the electronic power switch pipe Sc4；
The source electrode of the electronic power switch pipe Sa1 is connected with the drain electrode of the electronic power switch pipe Sa4, the electric power electricity
Sub switch pipe Sb1 source electrode is connected with the drain electrode of the electronic power switch pipe Sb4, the electronic power switch pipe Sc1's
Source electrode is connected with the drain electrode of the electronic power switch pipe Sc4, the draining of the electronic power switch pipe Sa1, the electric power
The draining of electronic switching tube Sb1, the drain electrode of the electronic power switch pipe Sc1 is connected, the electronic power switch pipe Sa4's
Source electrode, the source electrode of the electronic power switch pipe Sb4, the source electrode of the electronic power switch pipe Sc4 are connected；
The source electrode of the electronic power switch pipe Sa2 is connected with the source electrode of the electronic power switch pipe Sa3, the electric power electricity
Sub switch pipe Sb2 source electrode is connected with the source electrode of the electronic power switch pipe Sb3, the electronic power switch pipe Sc2's
Source electrode is connected with the source electrode of the electronic power switch pipe Sc3, the draining of the electronic power switch pipe Sa2, the electric power
The draining of electronic switching tube Sb2, the drain electrode of the electronic power switch pipe Sc2 is connected, the electronic power switch pipe Sa3's
Drain electrode and the source electrode of the electronic power switch pipe Sa1, the drain electrode of the electronic power switch pipe Sb3 are opened with the power electronics
The source electrode for closing pipe Sb1 is connected, the drain electrode of the electronic power switch pipe Sc3 and the source electrode of the electronic power switch pipe Sc1
It is connected.
9. the two-way charging device of many level of high-frequency isolation series resonance according to claim 8, it is characterised in that：The electricity
Power electronic switching tube Sa1, the electronic power switch pipe Sa2, the electronic power switch pipe Sa3, the electronic power switch
It is pipe Sa4, the electronic power switch pipe Sb1, the electronic power switch pipe Sb2, the electronic power switch pipe Sb3, described
Electronic power switch pipe Sb4, the electronic power switch pipe Sc1, the electronic power switch pipe Sc2, the power electronics are opened
Close pipe Sc3, the electronic power switch pipe Sc4 and diode is parallel between source electrode and drain electrode.
10. the two-way charging device of many level of high-frequency isolation series resonance according to claim 1, it is characterised in that：The T
The filtered inductance of AC of type three-level three-phase inverter and be connected with the power network.
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| CN201710431228.XA CN107222111A (en) | 2017-06-09 | 2017-06-09 | The two-way charging device of many level of high-frequency isolation series resonance |
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| CN201710431228.XA CN107222111A (en) | 2017-06-09 | 2017-06-09 | The two-way charging device of many level of high-frequency isolation series resonance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112583267A (en) * | 2020-12-15 | 2021-03-30 | 山特电子（深圳）有限公司 | Bidirectional DC-DC converter and uninterruptible power supply comprising same |
| CN115765460A (en) * | 2022-12-14 | 2023-03-07 | 深圳市康维特电气有限公司 | Bidirectional three-level three-phase interleaved LLC converter and control method thereof |
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| CN115765460A (en) * | 2022-12-14 | 2023-03-07 | 深圳市康维特电气有限公司 | Bidirectional three-level three-phase interleaved LLC converter and control method thereof |
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