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Integrated three-port power converter

A power converter and three-port technology, which is applied in the direction of converting DC power input to DC power output, output power conversion devices, instruments, etc., can solve the problems of separate control, high cost, and poor reliability, and achieve weight reduction and weight reduction. The effect of small size and optimized design

Active Publication Date: 2017-12-15
马小林
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of separate control, high cost and poor reliability in the power conversion of electric vehicles, the present invention provides an integrated three-port power converter with centralized control, low cost and good reliability

Method used

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the drawings.

[0028] Reference Figure 1~Figure 9 , An integrated three-port power converter comprising a transformer 20 with three independent windings, a first voltage-type inverter unit 21, a second voltage-type inverter unit 22, an output rectifier unit 23, and a control module Unit 11 and ports P1, P2, and P3, wherein one port P3 is used as a load port, and the other two ports P1, P2 are used as source or load ports; port P3 is connected to the output rectifier unit 23, and the port P1 is connected to the first voltage type The inverter unit 21 is connected, the port P2 is connected to the second voltage-type inverter unit 22, and the independent winding of one transformer is connected to the output rectifier unit 23, the first voltage-type inverter unit 21, the second voltage The controlled switches of the first voltage-type inverter unit 21, the second voltage-type inverter unit 22, and the...

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Abstract

The invention discloses an integrated three-port power converter, which comprises a transformer having three independent windings, a first voltage-type inverter unit, a second voltage-type inverter unit, an output rectifying unit, a control module unit, and ports P1, P2 and P3, wherein the port P3 serves as a load port, and the other two ports P1 and P2 serve as source or load ports; the port P3 is connected with the output rectifying unit, the port P1 is connected with the first voltage-type inverter unit, and the port P2 is connected with the second voltage-type inverter unit; one independent winding of the transformer is connected with the output rectifying unit, and the first voltage-type inverter unit and the second voltage-type inverter unit are connected with the other two independent windings of the transformer separately; and controlled switches of the first voltage-type inverter unit, the second voltage-type inverter unit and the output rectifying unit are connected with the control module unit. The integrated three-port power converter has the advantages of centralized control, low cost and good reliability.

Description

Technical field [0001] The invention relates to the invention belongs to the field of power electronic power conversion, in particular to a three-port power converter in electric vehicle applications. Background technique [0002] With the development of new energy sources, especially the development of electric vehicles, there is a need for power conversion between multiple ports, and the power conversion requirements for some ports are bidirectional transmission. The current practical application in electric vehicles is: from the grid rectifying the DC high-voltage end to the high-voltage energy storage battery end, it is basically realized by an AC / DC converter, which is generally called a charger; and from the high-voltage energy storage battery end to the grid DC / AC converter is used to realize the high-end DC / AC converter, which is generally called inverter (some low-end requirements do not configure the inverter module); from the high-voltage energy storage battery end to ...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02J3/32
CPCH02J3/32H02M3/3353
Inventor 马小林
Owner 马小林