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    Recently, demands for space-saving and easier maintenance have been growing among the equipment features demanded by the power converter market. To meet these demands, Hitachi has developed excellent technology in the form of a modular power conversion unit that supports various types of power converters and uses double-sided cooled power modules that provide outstanding cooling performance. By using doublesided cooled power modules, which have excellent heat dissipation and are smaller than conventional single-sided cooled power modules, the developed unit can house all of the key components needed for power conversion in a 55% smaller volume than conventional units, achieving better maintainability in a more compact size. Hitachi will continue working on global manufacturing, initially with UPSs equipped with this developed unit, and later by incorporating the unit into other power converters.

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    ABOUT THE AUTHORS

    Yuichi Mabuchi, Ph.D.

    Power Electronics Systems Research Development, Center for Technology Innovation - Controls, Research & Development Group, Hitachi, Ltd. He is currently engaged in the research and development of power electronics products. Dr. Mabuchi is a member of the Institute of Electronics, Information and Communication Engineers (IEICE), and the Japan Institute of Electronics Packaging (JIEP).

    Daisuke Matsumoto

    Power Electronics Systems Research Development, Center for Technology Innovation - Controls, Research & Development Group, Hitachi, Ltd. He is currently engaged in the research and development of power electronics products.

    Hiroshi Kamizuma

    Power Electronics Systems Research Development, Center for Technology Innovation - Controls, Research & Development Group, Hitachi, Ltd. He is currently engaged in the research and development of power electronics products. Mr. Kamizuma is a member of the IEICE.

    Yukio Hattori

    Power Electronics Systems Research Development, Center for Technology Innovation - Controls, Research & Development Group, Hitachi, Ltd. He is currently engaged in the research and development of power electronics products.

    Tomonori Ichikawa

    Power Electronics Design Department, Industrial Products Business Unit, Hitachi, Ltd. He is currently engaged in the development of power electronics products. Mr. Ichikawa is a member of the Institute of Electrical Engineers of Japan (IEEJ).

    Ryohei Miyagawa

    Power Electronics Design Department, Industrial Products Business Unit, Hitachi, Ltd. He is currently engaged in the development of power electronics products. Mr. Miyagawa is a member of the IEEJ.

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