CPC H02M 1/32 (2013.01) [H02M 7/5395 (2013.01); H02M 7/797 (2013.01); H02M 1/327 (2021.05)] | 14 Claims |
1. In a multi-phase voltage source inverter, an apparatus for balancing thermal stresses in semiconductor switching devices, comprising:
a monitor for monitoring temperatures of the semiconductor switching devices, the monitor selecting one of the phases and providing a temperature difference between two of the switching devices in the selected phase, the selected phase being associated with the highest temperature among the semiconductor devices monitored; and
a controller providing, based on the temperature difference, a zero-sequence component to be used for adjusting conduction times of each of the semiconductor devices.
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