POWER CONVERSION DEVICE

摘要

A power conversion device includes: a switching element (10) arranged on a DC current path between a positive electrode and a negative electrode of a DC voltage; a reactor (L1) arranged on the DC current path and turned ON/OFF by the switching element (10); a reactor recycling diode (D1) connected in parallel to the reactor (L1); a control unit for controlling ON/OFF of the switching element (10); and a DC shortcircuit error judgment unit which judges whether a DC shortcircuit between the positive electrode and the negative electrode of the DC voltage has occurred according to the inverse voltage applied to the reactor recycling diode (D1).If the DC shortcircuit error judgment unit judges that a DC shortcircuit error has occurred, the control unit turns OFF the switching element (10) of a power conversion unit (1).