ELECTRIC POWER CONVERSION DEVICE

摘要

Provided is a method for determining a connection between a power supply input circuit and a power supply phase detection circuit and showing correct wiring to a user, in a PWM converter for three-phase power. The present invention pertains to an electric power conversion device comprising: a state data detection unit that detects state data (current, voltage) input to a regeneration converter from a three-phase power supply during switching of a main circuit terminal; a comparison unit that compares the state data detected by the state data detection unit and a predetermined threshold value; and a determination unit that determines the wiring state between a three-phase power supply entering the main circuit and a three-phase power supply entering the phase detection circuit, on the basis of the comparison results from the comparison unit.