Patent ID: 9143075
Filing Date: 2015-09-22
Classification: B62D,H02M,H02P

Abstract:
1. A motor drive control device including an inverter circuit of n (which is equal to or greater than 3) phases of which output lines of respective phases are connected to respective phases of an n phase motor, and which controls drive of the motor based on an output signal of the inverter circuit; the motor drive control device comprising: a booster circuit which is connected to output lines of at least (n−1) phases of the inverter circuit and boosts outputs of the output lines; semiconductor relays which are interposed in respective phases of the motor connected to the output lines of at least (n−1) phases of the inverter circuit and which are adapted to receive the outputs boosted by the booster circuit and distributed as relay drive signals at a time of driving the motor; and a switching circuit which stops actuation of the booster circuit and turns off the semiconductor relays to shut off the drive of the motor.