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In this paper a study for very high efficiency targeting 99 % range converter is described. We have proposed a new soft switching boost type chopper based on snubber assisted zero voltage and zero current transition (SAZZ) with output diode fabricated ldquoSiC schottky dioderdquo. The output power of 8 kW with the efficiency of 98.96% was obtained. The loss breakdown evaluation of SiC-SAZZ is discussed.
A new soft switching chopper SAZZ(snubber assisted zero voltage and zero current transition) is extended to a bilateral converter for FCEV. The SAZZ topology has the advantages in (1) the turn-on loss is theoretically zero, (2) the turn-off loss is reduced by the snubber, (3) the number of the components is reduced. The experimental results with 8 kW output at 100 kHz switching frequency is presented...
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