Power conversion device

A power conversion device for receiving and converting an AC power provided by an AC power source, the power conversion device comprising:

• a power conversion circuit comprising a bridge switching unit, at least one filter inductor and a bus capacitor, wherein the at least one filter inductor is electrically connected with the bridge switching unit, the bridge switching unit comprises two DC terminals electrically connected with two terminals of the bus capacitor respectively;
• and
• a surge bypass circuit comprising a rectification circuit and an inductive coupling magnetic element, wherein the inductive coupling magnetic element is electrically connected with the rectification circuit in series, and the inductive coupling magnetic element and the rectification circuit form a multi-terminal network, wherein the multi-terminal network comprises plural AC terminals and two DC terminals, wherein the plural AC terminals are electrically connected with the AC power source, and the bridge switching unit and the bus capacitor are electrically connected with the two DC terminals in parallel.