| 摘要 |
<p>Provided is a power conversion device comprising: a control unit that performs PWM control on switching elements of an inverter circuit (5) for driving a multiphase AC motor (10); a current detection means (7) that detects, in each phase, a current flowing to the motor (10); an A/D conversion means that converts a detected current detection signal into a digital signal and performs current value detection processing; and a current detection phase selection means (8) that selects the current detection signal detected by the current detection means (7) , and sets the timing of the current value detection processing performed by the A/D conversion means within one cycle of a PWM carrier wave, on the basis of a voltage instruction value or a duty ratio setting value.</p> |
