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A multicellular ac-dc converter is proposed to realize highly efficient dc distribution system in data centers. The proposed converter consists of the singe-phase full-bridge ac-dc cell converters using ultralow loss GaN (Gallium Nitride) transistors and the non-regulated highly efficient isolated dc-dc cell converters. These cell converters are connected in ISOP (Input Series and Output Parallel)-IPOS...
Basic building blocks of power converters have been extracted for next generation 380 V DC distribution system. An approach has been proposed for realizing highly efficient and ultra-compact basic converters as bidirectional AC-DC converters, isolated DC-DC converters and non-isolated DC-DC converters. Based on the proposed approach, over 97 % efficient converters with 10 W/cm3 have been fabricated,...
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