Patent ID: 9614467
Date: 2017-04-04
CPC Classifications: H02P

Claim:
1. A motor control device comprising: a motor deceleration controller configured to receive a deceleration processing execution command to enable a deceleration control of a motor and a command voltage amplitude for an inverter, to control deceleration of the motor using the inverter, the motor deceleration controller including: an excitation controller to receive the deceleration processing execution command and a voltage signal across a DC circuit section of the inverter, to calculate a first command voltage-amplitude amplification factor used for a rapid deceleration control of the motor; a motor current controller to receive a motor current signal and a current amplitude limit value that is a limit value of current applicable to the inverter, and the motor, to calculate a second command voltage-amplitude amplification factor used for suppressing an overcurrent; an adder to add the first command voltage-amplitude amplification factor and the second command voltage-amplitude amplification factor, to output a third command voltage-amplitude amplification factor used for the rapid deceleration control of the motor; and a multiplier to multiply the command voltage amplitude by the third command voltage-amplitude amplification factor, to output a multiplied command voltage amplitude, wherein the inverter is controlled in accordance with the command voltage amplitude multiplied by the multiplier, and wherein the excitation controller receives the deceleration processing execution command and the voltage signal across the DC circuit section of the inverter, to calculate, based on the voltage signal, the first command voltage-amplitude amplification factor to be used for the rapid deceleration control of the motor using a command voltage-amplitude amplification-factor setting function.