ELECTRIC POWER CONVERSION APPARATUS AND ELECTRIC POWER CONVERSION SYSTEM

原文（中国語）

An electric power conversion apparatus includes: a first electric power terminal including two coupling terminals; a voltage sensor detecting a voltage between the two coupling terminals; a switching circuit coupled to the first electric power terminal; a transformer including a first winding coupled to the switching circuit, and a second winding; a rectifying circuit coupled to the second winding; a smoothing circuit; a second electric power terminal; and a control circuit. The control circuit causes the rectifying circuit to supply electric power from the second electric power terminal toward the first electric power terminal in a second period that precedes a first period during which electric power is supplied from the first electric power terminal toward the second electric power terminal, and detects a short circuit between the two coupling terminals by comparing the voltage detected by the voltage sensor with a predetermined threshold voltage, in the second period.