Patent ID: 8525466
Filing Date: 2013-09-03
Classification: H02M,H02P

Abstract:
1. An inverter device comprising a power portion performing PWM control on a voltage command to a motor for each set time period and outputting alternating-current power, comprising: a voltage command generation portion generating a voltage command in synchronization with a period N-times longer than the time period, where N≧1; an interval determination portion generating an interval determination signal which is ON during a half period of the time period and OFF during a next half period; a current detection portion detecting a current of the motor at timing of change in the interval determination signal; a voltage correction value generating portion generating a voltage correction value such that the amount of change in the detected current when the interval determination signal is ON becomes equal to the amount of change in the detected current when the interval determination signal is OFF; and a voltage correction portion correcting the voltage command with the voltage correction value.