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With commercial operation of the first Chinese Maglev line, lifetime prediction of power devices in Maglev choppers becomes a crucial topic. This paper adopts a mission profile of one typical Maglev chopper for lifetime prediction. A test rig is built for the IGBT/Diode case temperature measurement. Using look-up tables of IGBT/Diode losses, an accurate electro-thermal model can be established. The...
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