POWER CONVERSION DEVICE AND POWER CONVERSION METHOD

摘要

A power conversion device generates drive command signals for switch elements of multiple phases, the drive command signals designed to control connecting and disconnecting operations of the multiple phase switch elements in such a way that a direction of a current change attributed to a connecting or disconnecting operation of one switch element and a direction of a current change attributed to a connecting or disconnecting operation of another switch element are opposite to each other. Furthermore, the power conversion device corrects output timings of the drive command signals to be outputted to the switch elements so as to synchronize connecting and disconnecting timings of the switch elements with each other.

主权项

1. A power conversion device comprising:
switch elements of a plurality of phases connected to a common bus; and a control unit configured to control the switch elements, wherein the control unit includes:
a drive command generation unit configured to generate drive command signals for the switch elements, the drive command signals designed to control connecting and disconnecting operations of the switch elements of the plurality of phases in such a way that a direction of a current change at the common bus attributed to a connecting or disconnecting operation of a switch element of one phase and a direction of a current change at the common bus attributed to a connecting or disconnecting operation of a switch element of another phase different from the one phase are opposite to each other; and a delay correction unit configured to correct output timings of the drive command signals to be outputted to the switch elements so as to synchronize connecting and disconnecting timings of the switch elements of the one phase and the other phase with each other.