Integrated power conversion apparatus for electric vehicle and control method thereof

A control method of an integrated power conversion apparatus for an electric vehicle including:

• a three-winding transformer in which a primary winding is connected to the other side of the first H-bridge converter;
• a second H-bridge converter with one side which is connected to a secondary winding of the three-winding transformer;
• an AC-DC converter in which one side is connected to the other side of the second H-bridge converter and the other side is selectively connected to a motor or a power system;
• and a low voltage stage converter in which one side is selectively connected to a tertiary winding of the three-winding transformer through a selective switch and the other side is connected to a low voltage battery,
• wherein the first H-bridge converter includes first and second switches which configure a leading leg and third and fourth switches which configure a lagging leg, the second H-bridge converter includes fifth and sixth switches which configure a leading leg and seventh and eighth switches which configure a lagging leg,
• the method comprising:
• controlling the switching of the first to fourth switches of the first H-bridge converter, the fifth to eighth switches of the second H-bridge, and the selective switch.