Toshiba Mitsubishi-electric Industrial Systems Corporation

Kazuhiro Hinagata

Toshihide Nakano

A power supply system includes: a semiconductor switch () that is turned on at the time of normal supply from a commercial AC power supply (); a first current detector (CT) including a transformer () and configured to detect an AC input current (I); a second current detector (CT) including a Hall effect sensor () and configured to detect an AC output current (I); and a failure detector () that determines that one of a pair of thyristors () included in the semiconductor switch () has misfired when the detection values from the first and second current detectors (CT, CT) are not equal at the time of normal supply from the commercial AC power supply ().

Growing community of inventors

Chiyoda-ku, Japan

Kazuhiro Hinagata