Patent ID: 7936146
Filing Date: 2011-05-03
Classification: H02M,H02P

Abstract:
1. A motor control device, comprising: a motor current detecting portion which detects, based on a current flowing between an inverter that drives a three-phase motor and a direct-current power supply, a motor current flowing through the motor; a specified voltage value producing portion which produces, based on the motor current, a specified voltage value as a target value for a voltage to be applied to the motor, and which outputs the specified voltage value thus produced; a specified voltage value holding portion which holds an earlier specified voltage value outputted from the specified voltage value producing portion; and a specific period setting portion which sets a specific period based on a voltage difference between two of U-phase, V-phase, and W-phase voltages of the motor, wherein, outside the specific period, the motor is controlled via the inverter based on the specified voltage value outputted from the specified voltage value producing portion, and, within the specific period, the motor is controlled via the inverter based on the specified voltage value held by the specified voltage value holding portion.