POWER CONVERTER

摘要

A method for a power conversion apparatus to drive an electric motor using a power semiconductor device. The method includes detecting or estimating a temperature of the power semiconductor device to thereby obtain a detected or estimated temperature value, adjusting a torque command of the electric motor, so that the temperature of the power semiconductor device matches a preset temperature when the detected or estimated temperature value is equal to or higher than the preset temperature, and controlling the power semiconductor device using the adjusted torque command.

主权项

1. A power conversion apparatus for driving an electric motor, comprising:
a power semiconductor device; a control device configured to control the power semiconductor device based on a torque command of the electric motor; a semiconductor temperature detector/estimator configured to detect or estimate a temperature of the power semiconductor device; and a torque command adjusting device configured to adjust the torque command so that the temperature of the power semiconductor device matches a preset temperature when a temperature value detected or estimated by the semiconductor temperature detector/estimator is equal to or higher than the preset temperature.