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Usually the top and bottom IGBT devices in an inverter leg are of the same make (i.e. from same manufacturer). At low power level, these two devices even may be contained in the same module. However at high power levels the top and bottom devices are in separate modules. Sometimes, in the event of device failure, device of particular make may be replaced by one of another make, but of same ratings...
This paper describes IGBT and FWD design concept and measured results for the application of magnetic energy recovery switch (MERS) configuration for the first time. Since the switching frequency in the MERS application is so slow of 50-60 Hz that a lower on-state voltage drop is strongly required for the IGBT and FWD chips even though their fast switching features are sacrificed. Therefor e, the...
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