| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device having a plurality of phases on an AC side and providing DC/AC power conversion which detects a plurality of phase currents by means of a single current detector and produces a desired output by PWM control.SOLUTION: A control cycle of repetitive control includes a current detection period TA and a current control period TB. In the current detection period TA, a first gate signal 604 generated on the basis of a preset reference gate signal 602 is used for control, and a phase current i is computed from the first gate signal 604 and a detection current Idc from a current detector 400. In the current control period TB, a desired phase voltage value Vref computed such that the phase current i follows a command value is corrected such that a voltage error in the current detection period TA is canceled to generate a phase voltage command V, which is used for PWM control of the power conversion device. |
