Patent ID: 8975846
Filing Date: 2015-03-10
Classification: B60L,H02P,Y02T

Abstract:
1. A motor voltage conversion control device that performs voltage conversion control on a voltage conversion circuit which converts a DC voltage of a power supply into an input DC voltage required to drive motors between a motor control circuit which controls a plurality of motors and the power supply, comprising: sampling unit for detecting a voltage between both ends of a capacitor which is provided between the motor control circuit and the voltage conversion circuit and sampling the input DC voltage converted by the voltage conversion circuit; target voltage setting unit for setting a target voltage of the input DC voltage of each of the motors; selection unit for selecting the target voltage to be converted by the voltage conversion circuit among a plurality of target voltages set by the target voltage setting unit; sampling timing generating unit for generating sampling timing when the input DC voltage converted by the voltage conversion circuit is sampled, on the basis of a gate signal for motor control for any one of the motors with the target voltages which have not been selected by the selection unit; and control unit for performing the voltage conversion control using the input DC voltage sampled by the sampling unit at the sampling timing which is generated by the sampling timing generating unit in response to each sampling timing request in the voltage conversion control.