Thermal stabilization of power devices for compressor drive with start/stop operation mode

Abstract

This paper deals with the thermal stabilization of the power devices which was implemented in the compressor drive of the subway trains. This drive operates in start/stop mode, thus the thermocycling problems in the IGBT modules can occur. The algorithm of thermal stabilization is given and tests were conducted with the real power converter. The thermal images and temperature curves show the efficiency of the thermal stabilization algorithm in comparison to an ordinary solution.