Yuji Mastuoka

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A new 4.5 kV-400 A module using SiC-PiN diodes and Si-IEGTs hybrid pair has been developed. The hybrid pair module is designed to realize high-frequency switching operation of high power medium-voltage power converters (1-10MVA, voltage range 3...10kV). In order to realize a low switching loss operation of the hybrid pair module, a hard gate driving with(More)
The maximum switching frequency of a 4.5 kV-400 A SiC-PiN diode and Si-IEGT hybrid pair module has been analyzed from the viewpoints of cooling capacity of the hybrid pair module and the minimum pulse width of the PWM signal. In the developed hybrid pair module, a direct water cooling type heat sink is employed to enhance the cooling capacity. It found that(More)
Possibility of a 10 kHz switching frequency operation of a 4.5kV-400A SiC-PiN diode and Si-IEGT hybrid pair module has been investigated to drastically increase the switching frequency of medium-voltage power converters. For this purpose, the relation among the minimum pulsed width of the PWM signal, the modulation index, and the maximum switching frequency(More)
A 4.5 kV-400A SiC-PiN diode and Si-IEGT hybrid pair module has been developed for realizing high switching frequency operations of medium-voltage power converters. The maximum switching frequency of the hybrid pair module is theoretically analyzed from viewpoints of cooling capacity of the heat sink and the minimum pulse width of a PWM signal. Operation(More)
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