CN114884365A - Three-phase converter - Google Patents
Three-phase converter Download PDFInfo
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- CN114884365A CN114884365A CN202210543915.1A CN202210543915A CN114884365A CN 114884365 A CN114884365 A CN 114884365A CN 202210543915 A CN202210543915 A CN 202210543915A CN 114884365 A CN114884365 A CN 114884365A
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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
- H02M3/33576—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 having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33584—Bidirectional 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention discloses a three-phase converter, which comprises a three-phase bridge type switching circuit, a resonant cavity, three isolation transformers and a three-phase bridge type rectifying circuit, the resonant cavity comprises three resonant circuits which are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge type switching circuit and the primary windings of the three isolation transformers, wherein each resonant circuit comprises a first inductor, a second inductor and a first capacitor, one end of the first capacitor is connected with one end of the first inductor and one end of the second inductor, the other end of the first capacitor is connected with the middle point of one bridge arm in the three-phase bridge type switching circuit, the other ends of the first inductor and the second inductor are connected with a primary winding of an isolation transformer, the dotted ends of secondary windings of the three isolation transformers are respectively and correspondingly connected with the middle points of the three bridge arms of the three-phase bridge type rectifying circuit, and the dotted ends of the primary windings and the secondary windings of the three isolation transformers are respectively connected with each other to form Y-shaped connection.
Description
Technical Field
The invention relates to the technical field of power conversion, in particular to a three-phase converter.
Background
The bidirectional DC-DC converter is a DC/DC converter capable of adjusting energy bidirectional transmission according to requirements, and is mainly applied to occasions such as an energy storage system, a vehicle-mounted power supply system, a feedback charging and discharging system, a hybrid energy electric vehicle and the like.
In a traditional LLC resonant bidirectional converter, ZVS (zero voltage switching) conduction of a switching tube on the primary side and ZCS (zero voltage switching) conduction of a diode on a rectifying side can be realized no matter in forward and reverse work, but when energy flows reversely, the circuit characteristic is not the LLC resonant characteristic any more and is degraded into LC resonant characteristic, the maximum voltage gain of LC resonance is changed into 1, the voltage gain in reverse work is greatly reduced, the output voltage range is greatly narrowed, and therefore the LLC resonant bidirectional converter is not suitable for working in a wide voltage range energy bidirectional flow state, and the application scene of the LLC resonant bidirectional converter is limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing a three-phase converter which has small loss during forward and reverse working and can improve the working voltage range.
In order to solve the above technical problems, the present invention provides a three-phase converter, comprising a three-phase bridge switching circuit, a resonant cavity, three isolation transformers and a three-phase bridge rectifying circuit, wherein one side of the three-phase bridge switching circuit and one side of the three-phase bridge rectifying circuit are respectively used as a first connection side and a second connection side of the three-phase converter, the resonant cavity comprises three resonant circuits, the three resonant circuits are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge switching circuit and primary windings of the three isolation transformers, wherein,
each resonant circuit comprises a first inductor, a second inductor and a first capacitor, one end of the first capacitor is connected with one end of the first inductor and one end of the second inductor, the other end of the first capacitor is connected with the midpoint of one bridge arm in the three-phase bridge type switching circuit, the other ends of the first inductor and the second inductor are connected with a primary winding of an isolation transformer, the dotted ends of secondary windings of the three isolation transformers are respectively and correspondingly connected with the midpoints of three bridge arms of the three-phase bridge type rectifying circuit, and the dotted ends of the primary windings and the secondary windings of the three isolation transformers are respectively connected with each other to form Y-shaped connection.
The further technical scheme is as follows: the three-phase bridge type switching circuit comprises six switching tubes, every two switching tubes are connected in series to form a bridge arm, and two ends of the three bridge arms are used as the first connecting side of the three-phase converter after the three bridge arms are connected in parallel.
The further technical scheme is as follows: the three-phase bridge rectification circuit comprises six switching tubes, every two switching tubes are connected in series to form a bridge arm, and two ends of the three bridge arms are used as second connection sides of the three-phase converter after the three bridge arms are connected in parallel.
The further technical scheme is as follows: the switch tube is selected from MOSFET or IGBT.
The further technical scheme is as follows: the three-phase converter further comprises a first filter capacitor and a second filter capacitor, two ends of the first filter capacitor are connected to the first connecting side of the three-phase converter, and two ends of the second filter capacitor are connected to the second connecting side.
In order to solve the above technical problems, the present invention further provides a three-phase converter, comprising a three-phase bridge switching circuit, a resonant cavity, three isolation transformers and a three-phase bridge rectifying circuit, wherein one side of the three-phase bridge switching circuit and one side of the three-phase bridge rectifying circuit are respectively used as a first connection side and a second connection side of the three-phase converter, the resonant cavity comprises three resonant circuits, the three resonant circuits are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge switching circuit and primary windings of the three isolation transformers, wherein,
each resonant circuit comprises a first inductor, a second inductor and a first capacitor, wherein two ends of the first inductor are respectively connected with one end of the first capacitor and one end of the second inductor, one end of the first inductor, which is connected with the second inductor, is also connected with the midpoint of one bridge arm in the three-phase bridge type switching circuit, the other ends of the first capacitor and the second inductor are connected with a primary winding of an isolation transformer, the dotted ends of secondary windings of the three isolation transformers are respectively and correspondingly connected with the midpoint of three bridge arms of the three-phase bridge type rectifying circuit, and the dotted ends of the primary windings and the secondary windings of the three isolation transformers are respectively and mutually connected to form Y-shaped connection.
Compared with the prior art, equivalent circuits of the resonant circuit in the three-phase converter are all three-element resonant circuits when energy flows in the forward and reverse directions, soft switching is realized during forward and reverse working, the loss is small, and the problem of insufficient reverse gain of the traditional LLC resonant circuit is solved.
Drawings
Fig. 1 is a circuit schematic of a first embodiment of a three-phase inverter of the present invention.
Fig. 2 is a circuit schematic of a second embodiment of a three-phase inverter of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
Referring to fig. 1, fig. 1 is a circuit diagram of a three-phase inverter 10 according to a first embodiment of the present invention. In the embodiment shown in the drawings, the three-phase converter 10 includes a three-phase bridge switching circuit 100, a resonant cavity 200, three isolation transformers, and a three-phase bridge rectifying circuit 300, one side of the three-phase bridge switching circuit 100 and one side of the three-phase bridge rectifying circuit 300 are respectively used as a first connection side and a second connection side of the three-phase converter 10 to connect a power supply or a load, the resonant cavity includes three resonant circuits, and the three resonant circuits are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge switching circuit 100 and primary windings of the three isolation transformers. Each of the resonant circuits includes a first capacitor, a first inductor, and a second inductor, one end of the first capacitor is connected to one end of the first inductor and one end of the second inductor, the other end of the first capacitor is connected to a midpoint of one bridge arm in the three-phase bridge switching circuit 100, the other ends of the first inductor and the second inductor are connected to a primary winding of an isolation transformer, homonymous ends of secondary windings of the isolation transformers are respectively and correspondingly connected to midpoints of three bridge arms of the three-phase bridge rectifier circuit 300, and synonym ends of the primary windings and the synonym ends of the secondary windings of the isolation transformers are respectively and mutually connected to form a Y-type connection, that is, synonym ends of the primary windings of the isolation transformers are mutually connected to form a Y-type connection, and synonym ends of the secondary windings of the isolation transformers are also mutually connected to form a Y-type connection. Preferably, the inductance of the first inductor and the inductance of the second inductor are the same.
Specifically, in the present embodiment, the resonant cavity 200 includes a first resonant circuit, a second resonant circuit and a third resonant circuit, the three isolation transformers include a first isolation transformer T1, a second isolation transformer T2 and a third isolation transformer T3, the first resonant circuit comprises a first inductor L1, a second inductor L2 and a first capacitor C1, the second resonant circuit comprises a first inductor L3, a second inductor L4 and a first capacitor C2, the third resonant circuit comprises a first inductor L5, a second inductor L6 and a first capacitor C3, the first capacitor C1, the first capacitor C2 and the first capacitor C3 are correspondingly connected with the middle points of three bridge arms of the three-phase bridge type switch circuit 100, the second inductor L2, the second inductor L4 and the second inductor L6 are respectively connected to the different-name ends of the primary windings of the first isolation transformer T1, the second isolation transformer T2 and the third isolation transformer T3.
In this embodiment, when energy flows in the forward direction, that is, when energy flows from the first connection side to the second connection side, the first connection side of the three-phase converter 10 serves as a dc input terminal and can be connected to an external power source, and the second connection side thereof serves as a dc output terminal and can be connected to an external load; when the energy flows in the reverse direction, i.e., the energy flows from the second connection side to the first connection side, the second connection side of the three-phase converter 10 serves as the dc input terminal, and the first connection side thereof serves as the dc output terminal. The three-phase converter 10 has a simple structure, equivalent circuits when energy flows in the forward and reverse directions are all three-element resonant circuits, soft switching can be realized during the forward and reverse directions, the loss is small, and the problem of insufficient reverse gain of the traditional LLC resonant circuit is solved, namely, the energy can be boosted when flowing from the second connecting side to the first connecting side, the input and output voltage range of the converter can be effectively increased, the input and output in a wide voltage range are realized, and the three-phase converter is suitable for a high-power circuit; and the primary windings and the secondary windings of the three isolation transformers are connected in a Y shape, the total current flowing into the middle point of the Y-shaped connection is equal to the total current flowing out of the middle point of the Y-shaped connection, namely the sum of the currents of the three resonant circuits is 0, so that the current of one resonant circuit is always the sum of the currents of the other two resonant circuits at any moment, and even if the resonant parameters of each resonant circuit have certain tolerance in the whole switching period, the deviation of the effective values of the currents of the other two resonant circuits is small, so that the current balance among the three resonant circuits is ensured, and the phenomenon that devices of the circuit are damaged or overheated due to the fact that the current of one resonant circuit is too large is avoided.
In some embodiments, the three-phase bridge switching circuit 100 includes six switching tubes, namely a first switching tube Q1, a second switching tube Q2, a third switching tube Q3, a fourth switching tube Q4, a fifth switching tube Q5 and a sixth switching tube Q6, each two switching tubes are connected in series to form a bridge arm, and two ends of each three bridge arms are connected in parallel to serve as a first connection side of the three-phase converter 10, wherein a midpoint of a bridge arm formed by connecting the first switching tube Q1 and the second switching tube Q2 in series is connected to the first resonant circuit, a midpoint of a bridge arm formed by connecting the third switching tube Q3 and the fourth switching tube Q4 in series is connected to the second resonant circuit, and a midpoint of a bridge arm formed by connecting the fifth switching tube Q5 and the sixth switching tube Q6 in series is connected to the third resonant circuit. In this embodiment, the PFM mode is used to control the operation of the switching tubes, that is, the duty ratio is constant, and the modulation wave frequency is variable, so that each switching tube of the three-phase converter 10 is a soft switch.
In the embodiment shown in the drawings, the three-phase bridge rectifier circuit 300 includes six switching tubes, namely a seventh switching tube Q7, an eighth switching tube Q8, a ninth switching tube Q9, a tenth switching tube Q10, an eleventh switching tube Q11 and a twelfth switching tube Q12, each two switching tubes are connected in series to form a bridge arm, and two ends of each three bridge arms are used as the second connection side of the three-phase converter 10 after being connected in parallel, wherein a midpoint of a bridge arm formed by connecting the seventh switching tube Q7 and the eighth switching tube Q8 in series is connected to the secondary winding of the first isolation transformer T1, a midpoint of a bridge arm formed by connecting the ninth switching tube Q9 and the tenth switching tube Q10 in series is connected to the secondary winding of the second isolation transformer T2, and a midpoint of a bridge arm formed by connecting the eleventh switching tube Q11 and the twelfth switching tube Q12 in series is connected to the secondary winding of the third isolation transformer T3. Based on the design, when energy flows in the forward direction, the three-phase bridge rectifier circuit 300 can rectify the voltage waveform periodically output by the isolation transformer to generate the working voltage required by the load. Preferably, the switch tube may be an MOS, an IGBT or other controllable power switch tube to achieve better circuit performance, and in some other embodiments, each switch tube may further be connected in parallel with a diode, where the switch tube is an MOS tube, a diode is connected in parallel between a drain and a source thereof, and where the switch tube is an IGBT tube, a diode is connected in parallel between an emitter and a collector thereof.
Further, the three-phase converter 10 further includes a first filter capacitor C8 and a second filter capacitor C9, two ends of the first filter capacitor C8 are connected to the first connection side of the three-phase converter 10, and two ends of the second filter capacitor C9 are connected to the second connection side of the three-phase converter 10.
Understandably, in this embodiment, when energy is transmitted in the forward direction, the wide-range voltage output of the three-phase converter 10 is realized by controlling the switching frequencies of the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4, the fifth switching tube Q5 and the sixth switching tube Q6, and the two switching tubes on each bridge arm are complementarily turned on, so that the soft switching of the circuit can be realized; when energy is transmitted reversely, the equivalent circuit of the resonant circuit is also a three-element resonant circuit, so that the wide-range voltage output same as that during forward transmission can be realized by controlling the switching frequency of the seventh switching tube Q7, the eighth switching tube Q8, the ninth switching tube Q9, the tenth switching tube Q10, the eleventh switching tube Q11 and the twelfth switching tube Q12, and the two switching tubes on each bridge arm are complementarily conducted, so that the soft switching of the circuit can be realized. And when the switching frequency of the switching tube is equal to the resonant frequency, the capacitor in the resonant circuit connected with the primary winding of the isolation transformer can avoid the condition that the impedance is zero.
The three-phase converter 10 adopts a three-phase interleaving technology, the conduction phase difference of Q1 and Q2, Q3 and Q4, and the conduction phase difference of Q5 and Q6 are all 180 degrees, and the conduction time sequence of Q1, Q3 and Q5 are 120 degrees different from each other; therefore, the conduction time sequences of Q2, Q4 and Q6 are different by 120 degrees, the phase difference of the three-phase input and output currents is 120 degrees, and the input and output current fluctuation of the three-phase circuit is complementary, so that the input and output current ripple is small, and the good circuit performance is realized. At any moment, at least one of Q1, Q3 and Q5 is conducted at most two, and at least one of Q2, Q4 and Q6 is conducted at most two, and the number of the conducted switching tubes is always equal to three. Taking one of the three resonant circuits as an example, when Q1, Q4 and Q6 are turned on, the resonant dc voltage is transmitted to the first isolation transformer T1 through the first switching tube Q1, and meanwhile, the current value of the first resonant circuit is increased to store energy, the seventh switching tube Q7 is turned on, and the second filtering capacitor C9 is used for rectifying and filtering the output voltage of the first isolation transformer T1 to output a stable voltage, so as to control the output current; when the Q2, the Q3 and the Q5 are turned on, the resonant dc reverse voltage is transmitted to the first isolation transformer T1 through the second switching tube Q2, meanwhile, the reverse current value of the first resonant circuit is increased to supply power to the first isolation transformer T1, and the eighth switching tube Q8 is turned on, so that the output voltage of the first isolation transformer T1 is rectified and filtered to output a stable voltage, and the output current is controlled. Similarly, the working principle of the other two resonant circuits is consistent with the circuit.
Referring to fig. 2, fig. 2 is a circuit diagram of a three-phase converter 10 according to a second embodiment of the present invention, which is different from the first embodiment in the specific structure of the resonant circuit, and the rest of the circuit structures are the same or similar. Specifically, in this embodiment, the resonant circuit includes a first inductor, a second inductor, and a first capacitor, two ends of the first inductor are respectively connected to one ends of the first capacitor and the second inductor, one end of the first inductor connected to the second inductor is further connected to a midpoint of a bridge arm in the three-phase bridge switching circuit, and the other ends of the first capacitor and the second inductor are connected to a primary winding of an isolation transformer. In this embodiment, the first resonant circuit includes a first inductor L1, a second inductor L2, and a first capacitor C1, the second resonant circuit includes a first inductor L3, a second inductor L4, and a first capacitor C2, and the third resonant circuit includes a first inductor L5, a second inductor L6, and a first capacitor C3; the first capacitor C1, the first capacitor C2 and the first capacitor C3 are respectively and correspondingly connected with the dotted ends of primary windings of a first isolation transformer T1, a second isolation transformer T2 and a third isolation transformer T3, the second inductor L2, the second inductor L4 and the second inductor L6 are respectively and correspondingly connected with the dotted ends of primary windings of a first isolation transformer T1, a second isolation transformer T2 and a third isolation transformer T3, and the first inductor L1, the first inductor L3 and the first inductor L5 are respectively and correspondingly connected with the midpoints of three bridge arms of the three-phase bridge type switching circuit 100. The resonant circuit in this embodiment has small loss when energy flows in both forward and reverse directions, and can effectively increase the working voltage range of the converter 10, thereby realizing wide voltage range input and output.
In summary, equivalent circuits of the resonant circuit in the three-phase converter are all three-element resonant circuits when energy flows in the forward and reverse directions, soft switching is realized during forward and reverse operation, loss is small, and the problem of insufficient reverse gain of the traditional LLC resonant circuit is solved.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should be considered as falling within the protection scope of the present invention.
Claims (6)
1. A three-phase converter, characterized by: the three-phase converter comprises a three-phase bridge type switching circuit, a resonant cavity, three isolation transformers and a three-phase bridge type rectifying circuit, one side of the three-phase bridge type switching circuit and one side of the three-phase bridge type rectifying circuit are respectively used as a first connecting side and a second connecting side of the three-phase converter, the resonant cavity comprises three resonant circuits, the three resonant circuits are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge type switching circuit and primary windings of the three isolation transformers, wherein,
each resonant circuit comprises a first inductor, a second inductor and a first capacitor, one end of the first capacitor is connected with one end of the first inductor and one end of the second inductor, the other end of the first capacitor is connected with the midpoint of one bridge arm in the three-phase bridge type switching circuit, the other ends of the first inductor and the second inductor are connected with a primary winding of an isolation transformer, the dotted ends of secondary windings of the three isolation transformers are respectively and correspondingly connected with the midpoints of three bridge arms of the three-phase bridge type rectifying circuit, and the dotted ends of the primary windings and the secondary windings of the three isolation transformers are respectively connected with each other to form Y-shaped connection.
2. The three-phase inverter of claim 1, wherein: the three-phase bridge type switching circuit comprises six switching tubes, every two switching tubes are connected in series to form a bridge arm, and two ends of the three bridge arms are used as the first connecting side of the three-phase converter after the three bridge arms are connected in parallel.
3. The three-phase inverter of claim 1, wherein: the three-phase bridge rectification circuit comprises six switching tubes, every two switching tubes are connected in series to form a bridge arm, and two ends of the three bridge arms are used as second connection sides of the three-phase converter after the three bridge arms are connected in parallel.
4. A three-phase converter as claimed in claim 2 or 3, characterized in that: the switch tube is selected from MOSFET or IGBT.
5. The three-phase inverter of claim 1, wherein: the three-phase converter further comprises a first filter capacitor and a second filter capacitor, two ends of the first filter capacitor are connected to the first connecting side of the three-phase converter, and two ends of the second filter capacitor are connected to the second connecting side.
6. A three-phase converter, characterized by: the three-phase converter comprises a three-phase bridge type switching circuit, a resonant cavity, three isolation transformers and a three-phase bridge type rectifying circuit, one side of the three-phase bridge type switching circuit and one side of the three-phase bridge type rectifying circuit are respectively used as a first connecting side and a second connecting side of the three-phase converter, the resonant cavity comprises three resonant circuits, the three resonant circuits are respectively and correspondingly connected between the middle points of three bridge arms of the three-phase bridge type switching circuit and primary windings of the three isolation transformers, wherein,
each resonant circuit comprises a first inductor, a second inductor and a first capacitor, wherein two ends of the first inductor are respectively connected with one end of the first capacitor and one end of the second inductor, one end of the first inductor, which is connected with the second inductor, is also connected with the midpoint of one bridge arm in the three-phase bridge type switching circuit, the other ends of the first capacitor and the second inductor are connected with a primary winding of an isolation transformer, the dotted ends of secondary windings of the three isolation transformers are respectively and correspondingly connected with the midpoint of three bridge arms of the three-phase bridge type rectifying circuit, and the dotted ends of the primary windings and the secondary windings of the three isolation transformers are respectively and mutually connected to form Y-shaped connection.
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| CN202210543915.1A CN114884365A (en) | 2022-05-18 | 2022-05-18 | Three-phase converter |
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| CN202210543915.1A CN114884365A (en) | 2022-05-18 | 2022-05-18 | Three-phase converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115528897A (en) * | 2022-11-29 | 2022-12-27 | 深圳市恒运昌真空技术有限公司 | Resonant converter and control method thereof |
| WO2024051317A1 (en) * | 2022-09-09 | 2024-03-14 | 深圳深源技术能源有限公司 | Three-phase-interleaving extended-range efficient-isolation bidirectional converter |
-
2022
- 2022-05-18 CN CN202210543915.1A patent/CN114884365A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051317A1 (en) * | 2022-09-09 | 2024-03-14 | 深圳深源技术能源有限公司 | Three-phase-interleaving extended-range efficient-isolation bidirectional converter |
| CN115528897A (en) * | 2022-11-29 | 2022-12-27 | 深圳市恒运昌真空技术有限公司 | Resonant converter and control method thereof |
| CN115528897B (en) * | 2022-11-29 | 2023-03-03 | 深圳市恒运昌真空技术有限公司 | Resonant converter and control method thereof |
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