Patent ID: 6384558
Filing Date: 2002-05-07
Classification: H02H,H02M

Abstract:
A driving device for a motor-driven compressor including:(a) a motor-driven compressor for compressing a refrigerant; (b) a DC power supply serving as a power source of said motor-driven compressor; (c) a capacitor connected in parallel with said DC power supply; (d) a switch provided between said DC power supply and said capacitor, and closed when said motor-driven compressor is operated and opened when said compressor is stopped; (e) a driver for converting electric power supplied from said DC power supply via said switch and said capacitor into driving power for said motor-driven compressor, and for outputting the driving power to said motor-driven compressor; (f) a controller for giving said driver one of an instruction to operate and an instruction to stop said motor-driven compressor; and (g) a discharge control unit provided in said driver and controlling said driver so that electric charge of said capacitor is discharged using said motor-driven compressor as a medium, after the instruction to stop said motor-driven compressor has been given.