Abstract
The authors propose the isolated AC/DC converter using a modular matrix converter as a quick charger. This converter has a high-frequency transformer instead of a commercial-frequency transformer. The volume and weight of the proposed system become much smaller than those of the system using the commercial-frequency transformer. Because the proposed converter can directly charge the battery from the input medium voltage such as 6.6 kV, a pole transformer is not required and the system including the distribution system can be downsized. The operation principle and control method of the proposed converter are explained. The effectiveness of the proposed circuit was verified by using 200 V laboratory prototype.
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