Patent ID: 7977900
Filing Date: 2011-07-12
Classification: F25B,H02J,H02M,Y02B,Y04S

Abstract:
1. An inverter system for a vehicle-mounted air conditioner that controls the operation of a motor for driving a compressor constituting the vehicle-mounted air conditioner, the inverter system comprising: a switching element for rotatably driving the motor; a gate circuit for driving a gate of the switching element; a control circuit that controls the supply of a current to the gate circuit; an insulating DC-DC converter that converts a voltage supplied from a power source, which is insulated from the switching element, the gate circuit and the control circuit, to a prescribed voltage and applies the voltage to the gate circuit and the control circuit; a communication section that operates at a voltage supplied from the power source and transmits a control signal from a host control circuit outside the inverter system to the control circuit; and a sleep-mode shift control section that interrupts the application of a voltage from the DC-DC converter to the control circuit when a signal requiring the interruption of the application of a voltage to the control circuit has been received in the communication section from the host control circuit.