INVERTER DEVICE AND REFRIGERATION CYCLE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an inverter device that can reduce loss all over a wide range from a high load to a low load by employing a switching circuit formed by properly combining an IGBT and an MOSFET, and can thereby improve efficiency; and to provide a refrigeration cycle device.

SOLUTION: The inverter device comprises a plurality of series circuits each composed of the IGBT serving as the upstream side along the application direction of a voltage, and the MOSFET serving as the downstream side; and the switching circuit 2 in which a mutual connecting point between the IGBT and the MOSFET in the series circuit is connected to a load. By turning on/off the IGBT of at least one series circuit among the series circuits, multi-phase energization that turns on the MOSFET of at least another series circuit is sequentially switched.

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