INVERTER APPARATUS

摘要

An inverter apparatus is provided to prevent a short circuit of a load by melting all fuses at the same time when one switching device is out of order. An inverter circuit(14) includes a plurality of semiconductor units(15). Each semiconductor unit includes a first switching device(21) and a second switching device(22). Each semiconductor unit includes a connection point between the first switching device and the second switching device as an AC terminal. The AC terminals of two semiconductor units of one phase are parallel connected, and are connected to an AC load(16). A plus fuse(31) inside two semiconductor units of one phase and the connection point of the first switching device are connected each other by a first connection bus(41). A minus fuse(32) inside two semiconductor units of one phase and the connection point of the second switching device are connected each other by a second connection bus(42).