CN114499211A - Double-active-bridge converter - Google Patents
Double-active-bridge converter Download PDFInfo
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- CN114499211A CN114499211A CN202210191902.2A CN202210191902A CN114499211A CN 114499211 A CN114499211 A CN 114499211A CN 202210191902 A CN202210191902 A CN 202210191902A CN 114499211 A CN114499211 A CN 114499211A
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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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- Dc-Dc Converters (AREA)
Abstract
The embodiment of the application discloses a double-active-bridge converter, which can comprise: the first active direct current converter, the second active direct current converter and an isolation transformer are positioned between the first active direct current converter and the second active direct current converter; the first active DC converter includes a first power source, and the second active DC converter includes a second power source; the voltage of the first power supply is lower than that of the second power supply; the isolation transformer is a multi-winding transformer, the first side is a single winding, and the second side is a multi-winding; the first active dc converter further includes: the full-bridge arm is connected with the first power supply and the single winding respectively; the second active dc converter includes a plurality of half-bridge arms connected in series, and the plurality of half-bridge arms are connected to the multi-winding, respectively. Through the scheme of the embodiment, the voltage stress of the high-voltage side is reduced, and the method is suitable for occasions with large voltage difference between the low-voltage side and the high-voltage side.
Description
Technical Field
The present disclosure relates to voltage conversion technologies, and more particularly, to a dual active bridge converter.
Background
Because the new energy power generation has the characteristics of intermittence, randomness and instability, serious impact can be brought to a power grid, certain influence can be caused to the power quality of the power grid, and even the stable operation of the power grid is influenced in serious cases, so that a large amount of energy storage equipment is required to be added into the power grid to buffer fluctuating energy. Between the energy storage and the direct current bus, the isolated bidirectional DC-DC (direct current-direct current) converter plays a role in connecting the high-voltage bus with the low-voltage energy storage, and plays a role in voltage conversion, bidirectional energy control and electrical isolation.
A DAB (Dual Active Bridge) converter is an isolated DC-DC conversion device, in a Dual Active Bridge topology structure, Active switching tubes are adopted by an upper power device and a lower power device of a Bridge arm of a rectifying/inverting unit on two sides of a primary side and a secondary side of a transformer, direct current voltage is inverted to obtain high-frequency alternating current, the high-frequency alternating current is transmitted to the secondary side through a primary side winding of the transformer, and the high-frequency alternating current on the secondary side is rectified into direct current to be output. The double-active-bridge converter not only has application in distributed power supplies, but also is a core part of power conversion, and has soft switching characteristics and bidirectional power characteristics.
In the situation where the voltage level difference between the low-voltage side and the high-voltage side is large, such as in a photovoltaic power generation system, the voltage of the energy storage battery pack is low, the voltage of a system direct-current bus is high so as to meet the requirement of later-stage inversion, and a high-voltage conversion device is needed to improve the voltage and ensure the stability of the voltage of the direct-current bus. For a conventional dual active bridge converter, the high-side voltage is high, so that the switching devices on the high-side are subjected to large voltage stress. The voltage difference between the low-voltage side and the high-voltage side is large, the size of the isolation transformer is increased, and the soft switching characteristic of the converter is influenced. Therefore, a high-efficiency bidirectional DC-DC (direct current-direct current) conversion device which solves high voltage stress is sought, and plays a crucial role in promoting the application of heart energy.
Disclosure of Invention
The embodiment of the application provides a double-active-bridge converter, which can reduce the voltage stress of a high-voltage side and is suitable for occasions with large voltage difference between a low-voltage side and the high-voltage side.
An embodiment of the present application provides a dual active bridge converter, which may include: the active DC-DC converter comprises a first active DC converter, a second active DC converter and an isolation transformer positioned between the first active DC converter and the second active DC converter;
the first active DC converter includes a first power source, the second active DC converter includes a second power source; the voltage of the first power supply is lower than the voltage of the second power supply;
the isolation transformer is a multi-winding transformer, the first side is a single winding, and the second side is a multi-winding;
the first active dc converter further includes: a full-bridge arm connected to the first power supply and the single winding, respectively;
the second active dc converter further includes a plurality of half-bridge arms connected in series, and the plurality of half-bridge arms are connected to the multi-winding respectively.
In an exemplary embodiment of the present application, two ends of the first power supply are connected to two input ends of the full bridge arm;
and the output end of the full-bridge arm is connected with the first side of the isolation transformer.
In an exemplary embodiment of the present application, the first active dc converter may further include: a first capacitor and a first inductor;
the first capacitor is connected with the first power supply in parallel;
the first inductor is connected in series with a connecting circuit between the output end of the full-bridge arm and the first side of the isolation transformer.
In an exemplary embodiment of the present application, the full bridge arm may include: the first switching tube, the second switching tube, the third switching tube and the fourth switching tube;
the second end of the first switching tube is connected with the first end of the second switching tube in series;
the second end of the third switching tube is connected with the first end of the fourth switching tube in series;
the first end of the first switching tube is connected with the first end of the third switching tube;
the second end of the second switching tube is connected with the second end of the fourth switching tube;
the first end of the first switching tube and the second end of the second switching tube are used as input ends of the full-bridge arm;
and the second end of the first switching tube and the second end of the third switching tube are used as output ends of the full-bridge arm.
In an exemplary embodiment of the present application, the single winding is denoted as a first winding; the multi-winding may include a second winding and a third winding;
and the same-name ends of the second winding and the third winding are reversely connected in series.
In an exemplary embodiment of the present application, the second side may include: a second capacitor and a third capacitor;
the second capacitor is connected in series with the second winding, and the third capacitor is connected in series with the third winding.
In an exemplary embodiment of the present application, the plurality of half bridge legs may include: a first half-bridge arm and a second half-bridge arm;
the first half-bridge arm and the second half-bridge arm are connected in series;
the second power supply is connected in parallel with the first half-bridge arm and the second half-bridge arm which are connected in series;
the output end of the second winding is connected with the input end of the first half bridge arm;
and the output end of the third winding is connected with the input end of the second half-bridge arm.
In an exemplary embodiment of the present application, the second active dc converter may further include: a fourth capacitor and a fifth capacitor;
the fourth capacitor is connected with the first half bridge arm in parallel; and the fifth capacitor is connected with the second half-bridge arm in parallel.
In an exemplary embodiment of the present application, the first half bridge leg may include: a fifth switching tube and a sixth switching tube;
the second end of the fifth switching tube is connected with the first end of the sixth switch;
a first end of the fifth switching tube and a second end of the sixth switch are used as output ends of the first half bridge arm;
and the second end of the fifth switching tube and the second end of the sixth switch are used as input ends of the first half bridge arm.
In an exemplary embodiment of the present application, the second half-bridge leg may include: a seventh switching tube and an eighth switching tube;
the second end of the seventh switching tube is connected with the first end of the eighth switching tube;
a first end of the seventh switching tube and a second end of the eighth switching tube are used as output ends of the second half-bridge arm;
and the first end of the seventh switching tube and the first end of the eighth switching tube are used as input ends of the second half-bridge arm.
Compared with the related art, the dual-active bridge converter of the embodiment of the application can include: the active DC-DC converter comprises a first active DC converter, a second active DC converter and an isolation transformer positioned between the first active DC converter and the second active DC converter; the first active DC converter includes a first power source and the second active DC converter includes a second power source; the voltage of the first power supply is lower than the voltage of the second power supply; the isolation transformer is a multi-winding transformer, the first side is a single winding, and the second side is a multi-winding; the first active dc converter further includes: a full-bridge arm connected to the first power supply and the single winding, respectively; the second active dc converter includes a plurality of half-bridge arms connected in series, and the plurality of half-bridge arms are connected to the multi-winding, respectively. Through the scheme of the embodiment, the voltage stress of the high-voltage side is reduced, and the method is suitable for occasions with large voltage difference between the low-voltage side and the high-voltage side.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
Fig. 1 is a block diagram of an automatic voltage equalization type dual active bridge converter according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an automatic voltage equalization type dual active bridge converter according to an embodiment of the present application;
fig. 3 is an analysis diagram of a dual active converter according to an embodiment of the present application in the case of single phase shift control and forward power transmission.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
An embodiment of the present application provides a dual active bridge converter, as shown in fig. 1, which may include: a first active dc converter 1, a second active dc converter 2, and an isolation transformer 3 located between the first active dc converter 1 and the second active dc converter 2;
the first active DC converter 1 comprises a first power supply V1, the second active DC converter 2 comprises a second power supply V2; the voltage of the first power source V1 is lower than the voltage of the second power source V2;
the isolation transformer 3 is a multi-winding transformer, the first side is a single winding 31, and the second side is a multi-winding 32;
the first active dc converter 1 further includes: a full bridge arm 11 connected to the first power source V1 and the single winding, respectively;
the second active dc converter 2 further includes a plurality of half-bridge arms 21 connected in series, and the plurality of half-bridge arms 21 are respectively connected to the multiple windings 32.
In the exemplary embodiment of the application, a novel automatic voltage equalization type double-active bridge converter is provided, and on the basis of a traditional double-active bridge converter, a high-voltage side switching tube of the double-active bridge converter has lower voltage stress by changing the topological structure of the converter.
In the exemplary embodiment of the present application, the novel automatic voltage equalization type dual-active bridge converter can be applied to high-gain occasions where the voltage difference between the low-voltage side and the high-voltage side is large, and has better performance compared with the conventional dual-active bridge converter, so as to solve the problems of high stress and low power density applied in a new energy system.
In an exemplary embodiment of the present application, V1 is a low voltage side supply and V2 is a high voltage side supply.
In an exemplary embodiment of the present application, as shown in fig. 2, the first active dc converter 1 may further include: a full bridge arm;
two ends of the first power supply V1 are connected with two input ends of the full-bridge arm;
the output end of the full-bridge arm is connected with the first side of the isolation transformer 3.
In an exemplary embodiment of the present application, the first active dc converter 1 may further include: a first capacitor C1 and a first inductor Lr;
the first capacitor C1 is connected in parallel with the first power supply V1;
the first inductor Lr is connected in series to a connection line between the output end of the full-bridge arm and the first side of the isolation transformer 3.
In an exemplary embodiment of the present application, C1 is a low-side inductor and Lr is an auxiliary energy storage inductor.
In the exemplary embodiment of the present application, compared to a conventional dual-active bridge converter, the size of the auxiliary inductor of the dual-active bridge converter proposed by the solution of the present application may be only half of that of the conventional dual-active bridge converter under the same power transmission condition when the converter parameters are the same.
In an exemplary embodiment of the present application, the full bridge arm may include: a first switch tube S1, a second switch tube S2, a third switch tube S3 and a fourth switch tube S4;
the second end of the first switch tube S1 and the first end of the second switch tube S2 are connected in series;
the second end of the third switch tube S3 and the first end of the fourth switch tube S4 are connected in series;
a first end of the first switching tube S1 is connected with a first end of the third switching tube S3;
a second terminal of the second switching tube S2 is connected to a second terminal of the fourth switching tube S4;
a first end of the first switch tube S1 and a second end of the second switch tube S2 are used as input ends of the full-bridge arm;
the second end of the first switch tube S1 and the second end of the third switch tube S3 are output ends of the full-bridge arm.
In the exemplary embodiment of the present application, the low side switching tubes S1 and S4 are complementarily conductive, and S2 and S3 are complementarily conductive. The control mode can adopt Single-phase shift (SPS) and/or Extended-phase shift (EPS).
In an exemplary embodiment of the present application, the single winding is denoted as a first winding; the multi-winding may include a second winding and a third winding;
and the same-name ends of the second winding and the third winding are reversely connected in series.
In an exemplary embodiment of the present application, the isolation transformer may be a three-winding transformer, the primary side (i.e., the first side) may be a single winding, and the secondary side (i.e., the second side) may be a double winding, with the homonymous terminals of the double winding being connected in series in reverse.
In an exemplary embodiment of the present application, a voltage ratio among the first winding, the second winding, and the third winding may be n:1: 1.
In an exemplary embodiment of the present application, the second side may include: a second capacitance Cr1 and a third capacitance Cr 2;
the second capacitor Cr1 is connected in series with the second winding, and the third capacitor Cr2 is connected in series with the third winding.
In an exemplary embodiment of the present application, the plurality of half bridge legs may include: a first half bridge leg and a second half bridge leg.
In an exemplary embodiment of the present application, the first half bridge leg may include: a fifth switch tube S5 and a sixth switch tube S6;
a second end of the fifth switching tube S5 is connected to a first end of the sixth switch S6;
a first end of the fifth switch tube S5 and a second end of the sixth switch S6 are output ends of the first half bridge arm;
a second end of the fifth switch tube S5 and a second end of the sixth switch S6 are input ends of the first half bridge arm.
In an exemplary embodiment of the present application, the second half-bridge leg may include: a seventh switching tube S7 and an eighth switching tube S8;
a second end of the seventh switching tube S7 is connected to a first end of the eighth switching tube S8;
a first end of the seventh switching tube S7 and a second end of the eighth switching tube S8 are used as output ends of the second half-bridge arm;
a first end of the seventh switching tube S7 and a first end of the eighth switching tube S8 are used as input ends of the second half-bridge arm.
In an exemplary embodiment of the present application, the secondary side may include capacitors Cr1 and Cr2, and 4 switching tubes S5, S6, S7 and S8 are stacked (i.e., two bridge arms are connected in series) to form a switching tube series structure.
In the exemplary embodiment of the present application, the high side switching tubes S5 and S7 conduct complementarily, and S6 and S8 conduct complementarily. The control mode can adopt Single-phase shift (SPS) and/or Extended-phase shift (EPS).
In an exemplary embodiment of the present application, the first half bridge leg and the second half bridge leg are connected in series;
the second power supply is connected in parallel with the first half-bridge arm and the second half-bridge arm which are connected in series;
the output end of the second winding is connected with the input end of the first half bridge arm;
and the output end of the third winding is connected with the input end of the second half-bridge arm.
In an exemplary embodiment of the present application, the second active dc converter may further include: a fourth capacitance C21 and a fifth capacitance C22;
the fourth capacitor C21 is connected in parallel with the first half bridge arm; the fifth capacitor C22 is connected in parallel with the second half bridge leg.
In the exemplary embodiment of the present application, the analysis is performed by taking the dual active converter shown in fig. 2 of the embodiment of the present application as an example of the case of single phase shift control and forward power transmission, and the main schematic waveform diagram thereof can be shown in fig. 3. The power transfer characteristics are:
compared with the traditional double-active bridge converter
Under the condition of the same turn ratio (the secondary side of the traditional double-active bridge converter is a coil, so the turn ratio is converted into n/2) and the same transmission power, the size of the auxiliary inductor Lr provided by the embodiment of the application is only half of that of the traditional double-active bridge converter. The maximum voltage stress of the high-side switching tubes S5, S6, S7 and S8 is only half of the high-side voltage V2, which is also half of the conventional dual-active bridge converter.
In an exemplary embodiment of the present application, the following is the symbolic illustration in fig. 3: vg1(3) is the driving signal of switch tube S1 and switch tube S3; vg2(4) is the driving signal of switch tube S2 and switch tube S4; vg5(7) is the driving signal of switch tube S5 and switch tube S7; vg6(8) is the driving signal of switch tube S6 and switch tube S8; d is the phase shift ratio of half a switching period; ts =1/f is half the switching cycle time; vab is the ac voltage at the primary side of the transformer; vcd is the alternating voltage of a bridge arm on the secondary side of the transformer; vde is the alternating voltage of the lower bridge arm on the secondary side of the transformer; VLr is the voltage across the auxiliary inductor Lr; and iLr is the current on the auxiliary inductor Lr.
In the exemplary embodiment of the present application, according to the characteristics of the isolation transformer, the voltage stress of the auxiliary capacitors Cr1 and Cr2 is one fourth of the high-side voltage V2, while the voltage stress of the high-side capacitors C21 and C22 is one half of the high-side voltage V2, and the two capacitors share the voltage, so that the automatic voltage-sharing characteristic is realized.
In the exemplary embodiments of the present application, compared with the conventional dual active bridge converter, the scheme of the embodiments of the present application includes at least the following advantages:
1. the novel automatic voltage-sharing type double-active-bridge converter adopting the high-voltage-side switch tube laminated structure reduces the maximum voltage stress of the switch tube.
2. According to the scheme of the embodiment of the application, an automatic voltage-sharing structure is adopted, and the voltage of the high-voltage side stacked capacitor is automatically balanced.
3. The novel automatic voltage-sharing type double-active-bridge converter can adopt small auxiliary inductors under the condition of the same transmission power.
4. The two active bridge converters of novel automatic voltage equalization type that this application embodiment scheme provided, change and be applicable to the great occasion of low-voltage side and high-voltage side voltage phase difference.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A dual active bridge converter, comprising: the first active direct current converter, the second active direct current converter and an isolation transformer are positioned between the first active direct current converter and the second active direct current converter;
the first active DC converter includes a first power source and the second active DC converter includes a second power source; the voltage of the first power supply is lower than the voltage of the second power supply;
the isolation transformer is a multi-winding transformer, the first side is a single winding, and the second side is a multi-winding;
the first active dc converter further includes: a full-bridge arm connected to the first power supply and the single winding, respectively;
the second active dc converter further includes a plurality of half-bridge arms connected in series, and the plurality of half-bridge arms are connected to the multi-winding respectively.
2. The dual active bridge converter of claim 1,
two ends of the first power supply are connected with two input ends of the full-bridge arm;
and the output end of the full-bridge arm is connected with the first side of the isolation transformer.
3. The dual active bridge converter of claim 1, wherein the first active dc converter further comprises: a first capacitor and a first inductor;
the first capacitor is connected with the first power supply in parallel;
the first inductor is connected in series with a connecting circuit between the output end of the full-bridge arm and the first side of the isolation transformer.
4. The dual active bridge converter of claim 1, wherein the full bridge leg comprises: the first switching tube, the second switching tube, the third switching tube and the fourth switching tube;
the second end of the first switching tube is connected with the first end of the second switching tube in series;
the second end of the third switching tube is connected with the first end of the fourth switching tube in series;
the first end of the first switching tube is connected with the first end of the third switching tube;
the second end of the second switching tube is connected with the second end of the fourth switching tube;
the first end of the first switching tube and the second end of the second switching tube are used as input ends of the full-bridge arm;
and the second end of the first switching tube and the second end of the third switching tube are used as output ends of the full-bridge arm.
5. The dual active bridge converter of claim 1, wherein the single winding is designated as a first winding; the multiple windings comprise a second winding and a third winding;
and the same-name ends of the second winding and the third winding are reversely connected in series.
6. The dual active bridge converter of claim 5, wherein the second side comprises: a second capacitor and a third capacitor;
the second capacitor is connected in series with the second winding, and the third capacitor is connected in series with the third winding.
7. The dual active bridge converter of claim 5, wherein the plurality of half bridge legs comprises: a first half-bridge arm and a second half-bridge arm;
the first half-bridge arm and the second half-bridge arm are connected in series;
the second power supply is connected with the first half-bridge arm and the second half-bridge arm which are connected in series in parallel;
the output end of the second winding is connected with the input end of the first half bridge arm;
and the output end of the third winding is connected with the input end of the second half-bridge arm.
8. The dual active bridge converter of claim 7, wherein the second active dc converter further comprises: a fourth capacitor and a fifth capacitor;
the fourth capacitor is connected with the first half bridge arm in parallel; and the fifth capacitor is connected with the second half-bridge arm in parallel.
9. The dual active bridge converter of claim 7, wherein the first half bridge leg comprises: a fifth switching tube and a sixth switching tube;
the second end of the fifth switching tube is connected with the first end of the sixth switch;
a first end of the fifth switching tube and a second end of the sixth switch are used as output ends of the first half bridge arm;
and the second end of the fifth switching tube and the second end of the sixth switch are used as input ends of the first half bridge arm.
10. The dual active bridge converter of claim 7, wherein the second half bridge leg comprises: a seventh switching tube and an eighth switching tube;
the second end of the seventh switching tube is connected with the first end of the eighth switching tube;
a first end of the seventh switching tube and a second end of the eighth switching tube are used as output ends of the second half-bridge arm;
and the first end of the seventh switching tube and the first end of the eighth switching tube are used as input ends of the second half-bridge arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191902.2A CN114499211A (en) | 2022-03-01 | 2022-03-01 | Double-active-bridge converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191902.2A CN114499211A (en) | 2022-03-01 | 2022-03-01 | Double-active-bridge converter |
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| Publication Number | Publication Date |
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| CN114499211A true CN114499211A (en) | 2022-05-13 |
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| CN202210191902.2A Pending CN114499211A (en) | 2022-03-01 | 2022-03-01 | Double-active-bridge converter |
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- 2022-03-01 CN CN202210191902.2A patent/CN114499211A/en active Pending
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