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ELECTRIC POWER CONVERSION DEVICE

  • US 20150162841A1
  • Filed: 05/23/2013
  • Published: 06/11/2015
  • Est. Priority Date: 06/14/2012
  • Status: Active Grant
First Claim
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1. An electric power conversion device, comprising:

  • a transformer that is disposed between a first terminal and a second terminal;

    a first conversion part that is disposed between the first terminal and a first winding of the transformer; and

    a second conversion part that is disposed between the second terminal and a second winding of the transformer;

    wherein the electric power conversion device has a first operation mode and a second operation mode,the first operation mode being of converting DC power received from the first terminal into DC power having a desired voltage to be output to the second terminal,the second operation mode being of converting DC power received from the second terminal into DC power having a desired voltage to be output to the first terminal,wherein the first conversion part comprises;

    a first conversion circuit that is configured to bidirectionally convert power between the first terminal and the first winding;

    at least one first rectifying circuit that is configured to output DC power by receiving power supply from the first winding; and

    at least one first switching section that is configured to switch a connection state of the first rectifying circuit with respect to the first terminal, based on the first operation mode or the second operation mode, andwherein, by the first switching section switching the connection state of the first rectifying circuit, the first conversion part is configured to;

    in the first operation mode, supply the DC power received from the first terminal into the second conversion part through the first conversion circuit and the transformer; and

    in the second operation mode, output to the first terminal a voltage obtained by adding an output voltage of the first rectifying circuit to an output voltage of the first conversion circuit.

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