Patent ID: 7012401

Claim:
An inverter system equipped with an inverter, said inverter comprising: an upper ECU operating under electric supply of a low-voltage battery; a communication microcomputer receiving an instruction from said upper ECU; a motor control microcomputer receiving an instruction from said communication microcomputer; a gate driving circuit controlled by said motor control microcomputer; and a switching element driven by said gate driving circuit for converting a direct current of a high-voltage battery into an alternating current to drive a motor, wherein said upper ECU and said communication microcomputer are connected to each other via high-speed communication means to transmit instructions, said communication microcomputer and said motor control microcomputer are connected to each other via low-speed communication means to transmit instructions, an insulation boundary is defined between said communication microcomputer and said motor control microcomputer to isolate a low-voltage side electric component receiving electric power of said low-voltage battery from a high-voltage side electric component receiving electric power of said high-voltage battery, and insulation signal transmitting means is disposed on said insulation boundary to assure insulation and transmit signals.