CN215222024U - High-efficiency bidirectional converter - Google Patents
High-efficiency bidirectional converter Download PDFInfo
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- CN215222024U CN215222024U CN202120915537.6U CN202120915537U CN215222024U CN 215222024 U CN215222024 U CN 215222024U CN 202120915537 U CN202120915537 U CN 202120915537U CN 215222024 U CN215222024 U CN 215222024U
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Abstract
The utility model discloses a high-efficiency bidirectional converter, which comprises an inverter circuit, a resonance circuit, a transformer and a rectifier circuit, wherein the resonance circuit comprises a first capacitor, a second capacitor, a first self-coupling inductor and a second self-coupling inductor, the synonym end of a primary winding of the first self-coupling inductor is connected with the synonym end of a primary winding of the second self-coupling inductor and one end of the second capacitor, the other end of the second capacitor is connected with the synonym end of a secondary winding of the first self-coupling inductor and the synonym end of a secondary winding of the second self-coupling inductor, the synonym end of the primary winding of the first self-coupling inductor is connected with the first capacitor, the other end of the first capacitor and the synonym end of the secondary winding of the first self-coupling inductor are connected with the inverter circuit, the synonym end of the primary winding of the secondary winding of the second self-coupling inductor and the synonym end of the secondary winding of the transformer are connected with the primary winding of the transformer, the secondary winding of the transformer is connected with the input side of the rectifier circuit, the output side of the rectification circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
Description
Technical Field
The utility model relates to a power conversion technology field, more specifically relate to a high-efficient bidirectional converter.
Background
The bidirectional isolation 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 charge-discharge system, a hybrid energy electric vehicle and the like.
In a traditional LLC resonant high-efficiency bidirectional converter, ZVS (zero voltage switching) conduction of a switching tube at the primary side and ZCS (zero voltage switching) conduction of a diode at 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 the 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, the difficulty of realizing soft switching by the switching tube is increased, the conversion efficiency is reduced, and therefore the converter is not suitable for working in a wide-range energy bidirectional flow state, and the application scene of the converter is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high-efficient bidirectional converter that soft switch can be realized to the full range that just can promote the output voltage scope to the homoenergetic during forward and reverse during operation is provided.
In order to solve the above technical problem, the present invention provides a high-efficiency bidirectional converter, comprising an inverter circuit, a resonant circuit, a transformer and a rectifier circuit, wherein the resonant circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the different name end of the first self-coupled inductor primary winding is connected with the same name end of the second self-coupled inductor primary winding and one end of the second capacitor, the other end of the second capacitor is connected with the same name end of the first self-coupled inductor secondary winding and the different name end of the second self-coupled inductor secondary winding, the same name end of the first self-coupled inductor primary winding is connected with the first capacitor, the other end of the first capacitor and the different name end of the first self-coupled inductor secondary winding are connected with the inverter circuit, and the different name end of the second self-coupled inductor primary winding and the same name end of the second self-coupled inductor secondary winding are connected with the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectifying circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
The further technical scheme is as follows: the inverter circuit is a half-bridge inverter circuit and comprises two switching tubes, and the two switching tubes are connected in series to form a bridge arm.
The further technical scheme is as follows: the first capacitor is connected to the middle point of the bridge arm, and the synonym end of the secondary winding of the first self-coupled inductor is connected to the lowest end of the bridge arm.
The further technical scheme is as follows: the first capacitor is connected to the uppermost end of the bridge arm, and the synonym end of the secondary winding of the first self-coupled inductor is connected to the midpoint of the bridge arm.
The further technical scheme is as follows: the inverter circuit comprises four switching tubes, every two switching tubes are connected in series to form a bridge arm, two ends of the two bridge arms are used as first external connection ends of the high-efficiency bidirectional converter after the two bridge arms are connected in parallel, and the first capacitor and the first self-coupled inductor secondary winding are respectively connected to the middle points of the two bridge arms.
The further technical scheme is as follows: the rectification circuit comprises four switching tubes, every two switching tubes are connected in series to form a bridge arm, two ends of the two bridge arms are used as second external connection ends of the high-efficiency bidirectional converter after the two bridge arms are connected in parallel, and the homonymy end and the synonym end of the secondary winding of the transformer are respectively connected to the middle points of the two bridge arms.
The further technical scheme is as follows: the high-efficiency bidirectional converter further comprises a first filter capacitor and a second filter capacitor, wherein two ends of the first filter capacitor are connected to the input side of the inverter circuit, and two ends of the second filter capacitor are connected to the output side of the rectifying circuit.
In order to solve the above technical problem, the present invention further provides a high-efficiency bidirectional converter, which comprises an inverter circuit, a resonant circuit, a transformer and a rectifier circuit, wherein the resonant circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the different name end of the first self-coupled inductor primary winding is connected to the same name end of the second self-coupled inductor primary winding and one end of the second capacitor, the other end of the second capacitor is connected to the same name end of the first self-coupled inductor secondary winding and the different name end of the second self-coupled inductor secondary winding, the same name end of the first self-coupled inductor primary winding and the different name end of the secondary winding are connected to the inverter circuit, the different name end of the second self-coupled inductor primary winding is connected to the first capacitor, the other end of the first capacitor and the same name end of the second self-coupled inductor secondary winding are connected to the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectifying circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
In order to solve the above technical problem, the present invention further provides a high-efficiency bidirectional converter, which comprises an inverter circuit, a resonant circuit, a transformer and a rectifier circuit, wherein the resonant circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the different name end of the first self-coupled inductor primary winding is connected to the same name end of the second self-coupled inductor primary winding and one end of the second capacitor, the other end of the second capacitor is connected to the same name end of the first self-coupled inductor secondary winding and the different name end of the second self-coupled inductor secondary winding, the different name end of the first self-coupled inductor secondary winding is connected to the first capacitor, the other end of the first self-coupled capacitor and the same name end of the first self-coupled inductor primary winding are connected to the inverter circuit, and the different name end of the second self-coupled inductor primary winding and the same name end of the second self-coupled inductor secondary winding are connected to the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectifying circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
In order to solve the above technical problem, the present invention further provides a high-efficiency bidirectional converter, which comprises an inverter circuit, a resonant circuit, a transformer and a rectifier circuit, wherein the resonant circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the different name end of the first self-coupled inductor primary winding is connected to the same name end of the second self-coupled inductor primary winding and one end of the second capacitor, the other end of the second capacitor is connected to the same name end of the first self-coupled inductor secondary winding and the different name end of the second self-coupled inductor secondary winding, the same name end of the first self-coupled inductor primary winding and the different name end of the secondary winding are connected to the inverter circuit, the same name end of the second self-coupled inductor secondary winding is connected to the first capacitor, the other end of the first capacitor and the different name end of the second self-coupled inductor primary winding are connected to the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectifying circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
Compared with the prior art, the utility model discloses resonant circuit among the high-efficient bidirectional converter is the circuit topology form of symmetry, and its equivalent circuit when the energy positive reverse flow is the same, has solved the problem that traditional LLC resonant circuit can not reverse equivalent performance work, promptly the utility model discloses high-efficient bidirectional converter can rise when the energy reverse flow, can effectively promote the output voltage scope of converter, realizes wide voltage range output, has kept the performance of good soft switch simultaneously when the energy reverse flow, and adopts the self coupling inductance, has reduced the peak current of circuit, effectively improves the magnetic core utilization ratio, reduces the coil number of turns simultaneously, makes the inductance volume diminish, and the loss is littleer, and then improves bidirectional converter's efficiency.
Drawings
Fig. 1 is a circuit diagram of a first embodiment of the high-efficiency bidirectional converter of the present invention.
Fig. 2 is a circuit diagram of a second embodiment of the high-efficiency bidirectional converter of the present invention.
Fig. 3 is a circuit diagram of a third embodiment of the high-efficiency bidirectional converter of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, fig. 1 is a circuit diagram of a first embodiment of a high-efficiency bidirectional converter 10 according to the present invention. In the embodiment shown in the drawings, the high-efficiency bidirectional converter 10 includes an inverter circuit 11, a resonant circuit 12, a transformer T1, and a rectifying circuit 14, wherein the inverter circuit 11 has a half-bridge structure, specifically, in this embodiment, the inverter circuit 11 includes two switching tubes, namely a first switching tube Q1 and a second switching tube Q2, the first switching tube Q1 and the second switching tube Q2 are connected in series to form a bridge arm, the resonant circuit 12 includes a first capacitor C1, a second capacitor C2, a first self-coupled inductor L1, and a second self-coupled inductor L2, a synonym end of a primary winding of the first self-coupled inductor L1 is connected to a synonym end of a primary winding of a second self-coupled inductor L2 and to one end of a second capacitor C2, the other end of the second capacitor C2 is connected to a synonym end of a secondary winding of the first self-coupled inductor L1 and a synonym end of a secondary winding of a second self-coupled inductor L2, a synonym end of a primary inductor L1 is connected to a synonym end of a first self-coupled inductor C1, the other end of the first capacitor C1 and the synonym end of the secondary winding of the first self-coupled inductor L1 are used as the first connection end of the resonant circuit 12, the first connection end of the resonant circuit 12 is connected to the bridge arm of the inverter circuit 11, the synonym end of the primary winding of the second self-coupled inductor L2 and the synonym end of the secondary winding are used as the second connection end of the resonant circuit 12, the primary winding of the transformer T1 is connected, the secondary winding of the transformer T1 is connected to the input side of the rectifier circuit 14, the output side of the rectifier circuit 14 and the two ends of the bridge arm of the inverter circuit 11 are respectively used as the first external connection end and the second external connection end of the high-efficiency bidirectional converter 10 to connect the load and the power supply. Preferably, the inductance of the first self-coupling inductor L1 and the inductance of the second self-coupling inductor L2 are the same. Understandably, in some other embodiments, the first capacitor C1 in the resonant circuit 12 may be further connected between the primary winding of the second self-coupled inductor L2 and the transformer T1, so that the dotted terminal of the secondary winding of the first capacitor C1 and the second self-coupled inductor L2 is used as the second connection terminal connected to the transformer T1, and the dotted terminal of the primary winding of the first self-coupled inductor L1 and the dotted terminal of the secondary winding are used as the first connection terminal connected to the inverter circuit 11, and the circuit operation process and the operation principle are substantially the same as those of this embodiment.
In this embodiment, when energy flows in the forward direction, the first external connection terminal of the high-efficiency bidirectional converter 10 serves as a dc input terminal and can be connected to an external power supply, and the second external connection terminal thereof serves as a dc output terminal and can be connected to an external load; when the energy flows in the reverse direction, the second external terminal of the high-efficiency bidirectional converter 10 is used as the dc input terminal, and the first external terminal thereof is used as the dc output terminal. The utility model discloses resonant circuit 12 among high-efficient bidirectional converter 10 is CLCL resonant circuit, circuit topology form for the symmetry, its equivalent circuit when the energy positive reverse flow is the same, the problem that traditional LLC resonant circuit can not reverse equivalent performance work has been solved, can rise the pressure when the energy reverse flow promptly, can effectively promote the output voltage scope of converter, realize wide voltage range output, the performance of good soft switch has been remain when the energy reverse flow simultaneously, and adopt the self coupling inductance, compare with ordinary inductance, the peak current of circuit has been reduced, effectively improve the magnetic core utilization ratio, reduce the number of turns of coil simultaneously, make the inductance volume diminish, the loss is littleer, and then improve bidirectional converter's efficiency.
Specifically, in this embodiment, the first capacitor C1 is connected to the uppermost end of a bridge arm formed by a series connection of a first switch tube Q1 and a second switch tube Q2, and the synonym end of the secondary winding of the first self-coupled inductor L1 is connected to the midpoint of the bridge arm. In this embodiment, the PFM mode is used to control the operation of the switching tube, that is, the constant duty ratio is used to keep the on and off time of the switching tube constant, and then the modulation is performed in the manner of modulating the square wave frequency, so that the zero current switching-on of the high-efficiency bidirectional converter 10 in the low-frequency operating state can be realized.
In the embodiment shown in the drawings, the rectification circuit 14 includes four switching tubes, namely a fifth switching tube Q5, a sixth switching tube Q6, a seventh switching tube Q7 and an eighth switching tube Q8, each two switching tubes are connected in series to form a bridge arm, and two ends of each two bridge arms are used as the second external connection end of the high-efficiency bidirectional converter 10 after the two bridge arms are connected in parallel, wherein a midpoint of the bridge arm formed by connecting the fifth switching tube Q5 and the sixth switching tube Q6 in series and a midpoint of the bridge arm formed by connecting the seventh switching tube Q7 and the eighth switching tube Q8 in series are respectively connected with the dotted end and the unlike end of the secondary winding of the transformer T1. Based on the design, when energy flows in the forward direction, the rectifying circuit 14 can rectify the voltage waveform periodically output by the transformer T1 to generate the working voltage required by the load. Preferably, the switching tube is an MOS, an IGBT, or another controllable power switching tube, so as to achieve better circuit performance, in this embodiment, a diode is further connected in parallel to the switching tube, if the switching tube is an MOS tube, a diode is connected in parallel between a drain and a source of the switching tube, and if the switching tube is an IGBT tube, a diode is connected in parallel between an emitter and a collector of the switching tube.
Further, the high-efficiency bidirectional converter 10 further includes a first filter capacitor C3 and a second filter capacitor C4, two ends of the first filter capacitor C3 are connected to two ends of a bridge arm of the inverter circuit 11, and two ends of the second filter capacitor C4 are connected to an output side of the rectifier circuit 14.
Understandably, in this embodiment, when energy is transmitted in the forward direction, the wide-range voltage output of the high-efficiency bidirectional converter 10 is realized by controlling the switching frequencies of the first switching tube Q1 and the second switching tube Q2, and the two switching tubes on the bridge arm are complementarily turned on, so that the soft switching of the circuit can be realized; when energy is transmitted reversely, the resonant circuit 12 is a symmetrical circuit topology structure, and equivalent circuits when energy flows in forward and reverse directions are the same, so that wide-range voltage output can be realized by controlling the switching frequencies of the fifth switching tube Q5, the sixth switching tube Q6, the seventh switching tube Q7 and the eighth switching tube Q8, and the two switching tubes on each bridge arm are complementarily conducted, so that soft switching of the circuit can be realized.
Referring to fig. 2, fig. 2 is a specific circuit diagram of a second embodiment of the high-efficiency bidirectional converter 10 of the present invention, which is different from the first embodiment in that the specific structure of the resonant circuit 12 and the specific connection relationship between the inverter circuit 11 and the resonant circuit 12 are different, and the rest circuit structures are the same or similar. In this embodiment, the resonant circuit 12 includes a first capacitor C1, a second capacitor C2, a first self-coupled inductor L1, and a second self-coupled inductor L2, the synonym end of the primary winding of the first self-coupled inductor L1 is connected to the synonym end of the primary winding of the second self-coupled inductor L2 and one end of the second capacitor C2, the other end of the second capacitor C2 is connected to the synonym end of the secondary winding of the first self-coupled inductor L1 and the synonym end of the secondary winding of the second self-coupled inductor L2, the synonym end of the secondary winding of the first self-coupled inductor L1 is connected to the first capacitor C1, the other end of the first capacitor C1 and the synonym end of the primary winding of the first self-coupled inductor L1 are used as the first connection end of the resonant circuit 12, the bridge arm of the inverter circuit 11 is connected, the synonym end of the primary winding of the second self-coupled inductor L2 and the synonym end of the secondary winding are used as the second connection end of the resonant circuit 12, and the second connection end of the transformer T1 are connected to the primary connection terminal of the resonant circuit 12, the secondary winding of the transformer T1 is connected to the input side of the rectifying circuit 14, and the output side of the rectifying circuit 14 and the input side of the inverter circuit 11 are respectively used as the second external connection terminal and the first external connection terminal of the high-efficiency bidirectional converter 10.
As can be seen from the figure, the inverter circuit 11 in this embodiment is also of a half-bridge structure, that is, the inverter circuit also includes two switching tubes, namely, a first switching tube Q1 and a second switching tube Q2, and the first switching tube Q1 and the second switching tube Q2 are connected in series to form a bridge arm, but the specific connection between the bridge arm and the components of the resonant circuit 12 is different from that in the first embodiment, specifically, in this embodiment, the first capacitor C1 is connected to the lowest end of the bridge arm formed by the first switching tube Q1 and the second switching tube Q2 connected in series, and the same-name end of the primary winding of the first self-coupled inductor L1 is connected to the midpoint of the bridge arm. It is to be understood that, in some other embodiments, the position of the first capacitor C1 in the resonant circuit 12 may be different from this embodiment, and the first capacitor C1 may be connected between the secondary winding of the second self-coupled inductor L2 and the transformer T1, at this time, the synonym terminal of the primary winding of the first capacitor C1 and the second self-coupled inductor L2 serves as the second connection terminal connected to the transformer T1, and the synonym terminal of the primary winding of the first self-coupled inductor L1 and the synonym terminal of the secondary winding serve as the first connection terminal connected to the inverter circuit 11, and the circuit operation process and the operation principle are substantially the same as those of this embodiment.
Referring to fig. 3, fig. 3 is a specific circuit diagram of a third embodiment of the high-efficiency bidirectional converter 10 of the present invention, which is different from the first embodiment in that the specific structure of the inverter circuit 11 is different, and the rest of the circuit structures are the same or similar. In this embodiment, the inverter circuit 11 includes four switching tubes, namely a first switching tube Q1, a second switching tube Q2, a third switching tube Q3 and a fourth switching tube Q4, each two switching tubes are connected in series to form a bridge arm, and two ends of the two bridge arms are connected in parallel to serve as a first external connection end of the high-efficiency bidirectional converter 10, wherein a midpoint of the bridge arm formed by connecting the first switching tube Q1 and the second switching tube Q2 in series is connected to a first capacitor C1, and a midpoint of the bridge arm formed by connecting the third switching tube Q3 and the fourth switching tube Q4 in series is connected to a synonym end of a secondary winding of a first self-coupled inductor L1. It should be understood that, in some other embodiments, the position of the first capacitor C1 in the resonant circuit 12 may also be different from that in the present embodiment, and specific positions may refer to the description related to the first embodiment and the second embodiment, which is not described herein again.
To sum up, the utility model discloses resonant circuit among the high-efficient bidirectional converter is the circuit topology form of symmetry, and its equivalent circuit when the energy positive reverse flow is the same, has solved the problem that traditional LLC resonant circuit can not reverse equivalent performance work, promptly the utility model discloses high-efficient bidirectional converter can rise when the energy reverse flow, can effectively promote the output voltage scope of converter, realizes wide voltage range output, has kept the performance of good soft switch simultaneously when the energy reverse flow, and adopts the self coupling inductance, compares with ordinary inductance, has reduced the peak current of circuit, effectively improves the magnetic core utilization ratio, reduces the coil number of turns simultaneously, makes the inductance volume diminish, and the loss is littleer, and then improves bidirectional converter's efficiency.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit 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 fall within the protection scope of the present invention.
Claims (10)
1. A high efficiency bidirectional converter, characterized by: the high-efficiency bidirectional converter comprises an inverter circuit, a resonance circuit, a transformer and a rectifying circuit, wherein the resonance circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the synonym end of a primary winding of the first self-coupled inductor is connected with the synonym end of a primary winding of the second self-coupled inductor and one end of the second capacitor, the other end of the second capacitor is connected with the synonym end of a secondary winding of the first self-coupled inductor and the synonym end of a secondary winding of the second self-coupled inductor, the synonym end of the primary winding of the first self-coupled inductor is connected with the first capacitor, the other end of the first capacitor and the synonym end of the secondary winding of the first self-coupled inductor are connected with the inverter circuit, the synonym end of the primary winding of the second self-coupled inductor and the synonym end of the secondary winding are connected with the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectification circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
2. A high efficiency bi-directional converter as recited in claim 1, wherein: the inverter circuit is a half-bridge inverter circuit and comprises two switching tubes, and the two switching tubes are connected in series to form a bridge arm.
3. A high efficiency bi-directional converter as recited in claim 2, wherein: the first capacitor is connected to the middle point of the bridge arm, and the synonym end of the secondary winding of the first self-coupled inductor is connected to the lowest end of the bridge arm.
4. A high efficiency bi-directional converter as recited in claim 2, wherein: the first capacitor is connected to the uppermost end of the bridge arm, and the synonym end of the secondary winding of the first self-coupled inductor is connected to the midpoint of the bridge arm.
5. A high efficiency bi-directional converter as recited in claim 1, wherein: the inverter circuit comprises four switching tubes, every two switching tubes are connected in series to form a bridge arm, two ends of the two bridge arms are used as first external connection ends of the high-efficiency bidirectional converter after the two bridge arms are connected in parallel, and the first capacitor and the first self-coupled inductor secondary winding are respectively connected to the middle points of the two bridge arms.
6. A high efficiency bi-directional converter as recited in claim 1, wherein: the rectification circuit comprises four switching tubes, every two switching tubes are connected in series to form a bridge arm, two ends of the two bridge arms are used as second external connection ends of the high-efficiency bidirectional converter after the two bridge arms are connected in parallel, and the homonymy end and the synonym end of the secondary winding of the transformer are respectively connected to the middle points of the two bridge arms.
7. A high efficiency bi-directional converter as recited in claim 1, wherein: the high-efficiency bidirectional converter further comprises a first filter capacitor and a second filter capacitor, wherein two ends of the first filter capacitor are connected to the input side of the inverter circuit, and two ends of the second filter capacitor are connected to the output side of the rectifying circuit.
8. A high efficiency bidirectional converter, characterized by: the high-efficiency bidirectional converter comprises an inverter circuit, a resonance circuit, a transformer and a rectifying circuit, wherein the resonance circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the synonym end of a primary winding of the first self-coupled inductor is connected with the synonym end of a primary winding of the second self-coupled inductor and one end of the second capacitor, the other end of the second capacitor is connected with the synonym end of a secondary winding of the first self-coupled inductor and the synonym end of a secondary winding of the second self-coupled inductor, the synonym end of the primary winding of the first self-coupled inductor and the synonym end of the secondary winding of the second self-coupled inductor are connected with the inverter circuit, the synonym end of the primary winding of the second self-coupled inductor is connected with the first capacitor, the other end of the first capacitor and the synonym end of the secondary winding of the second self-coupled inductor are connected with the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectification circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
9. A high efficiency bidirectional converter, characterized by: the high-efficiency bidirectional converter comprises an inverter circuit, a resonance circuit, a transformer and a rectifying circuit, wherein the resonance circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the synonym end of a primary winding of the first self-coupled inductor is connected with the synonym end of a primary winding of the second self-coupled inductor and one end of the second capacitor, the other end of the second capacitor is connected with the synonym end of a secondary winding of the first self-coupled inductor and the synonym end of a secondary winding of the second self-coupled inductor, the synonym end of a secondary winding of the first self-coupled inductor is connected with the first capacitor, the other end of the first capacitor and the synonym end of the primary winding of the first self-coupled inductor are connected with the inverter circuit, the synonym end of the primary winding of the second self-coupled inductor and the synonym end of the secondary winding are connected with the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectification circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
10. A high efficiency bidirectional converter, characterized by: the high-efficiency bidirectional converter comprises an inverter circuit, a resonance circuit, a transformer and a rectifying circuit, wherein the resonance circuit comprises a first capacitor, a second capacitor, a first self-coupled inductor and a second self-coupled inductor, the synonym end of a primary winding of the first self-coupled inductor is connected with the synonym end of a primary winding of the second self-coupled inductor and one end of the second capacitor, the other end of the second capacitor is connected with the synonym end of a secondary winding of the first self-coupled inductor and the synonym end of a secondary winding of the second self-coupled inductor, the synonym end of the primary winding of the first self-coupled inductor and the synonym end of the secondary winding of the second self-coupled inductor are connected with the inverter circuit, the synonym end of the secondary winding of the second self-coupled inductor is connected with the first capacitor, the other end of the first capacitor and the synonym end of the primary winding of the second self-coupled inductor are connected with the primary winding of the transformer, and the secondary winding of the transformer is connected with the input side of the rectifying circuit, and the output side of the rectification circuit and the input side of the inverter circuit are respectively used as a second external connection end and a first external connection end of the high-efficiency bidirectional converter.
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| CN202120915537.6U CN215222024U (en) | 2021-04-29 | 2021-04-29 | High-efficiency bidirectional converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113162431A (en) * | 2021-04-29 | 2021-07-23 | 深圳深源技术能源有限公司 | High-efficiency bidirectional converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113162431A (en) * | 2021-04-29 | 2021-07-23 | 深圳深源技术能源有限公司 | High-efficiency bidirectional converter |
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