ELECTRIC POWER CONVERSION APPARATUS AND ELECTRIC POWER CONVERSION SYSTEM

Abstract: an electric power conversion apparatus includes: a first electric power terminal including first and second coupling terminals; a switching circuit; a transformer; a rectifying circuit; a smoothing circuit including a first inductor and a first capacitor; an electric power regeneration circuit coupled to the rectifying circuit and configured to allow electric power to be regenerated in the first capacitor; a control circuit configured to control operations of the switching circuit, the rectifying circuit, and the electric power regeneration circuit; and a second electric power terminal. the control circuit is configured to, in a predetermined period before a period in which electric power is to be supplied from the first electric power terminal toward the second electric power terminal, detect a short circuit between the first and second coupling terminals of the first electric power terminal, based on a voltage, a current, or both at the electric power regeneration circuit.

Inventor(s): Kazuki MATSUBARA

CPC Classification: H02M1/32 (Means for protecting converters other than automatic disconnection)

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