[6a-A401-1~9] 1.4 Energy conversion, storage, resources and environment

[6a-A401-3] Fail-safe design of solar to hydrogen conversion systems with transformerless converters

〇(DC)Daiji Yamashita¹, Masakazu Sugiyama², Yoshiaki Nakano¹ (1.The Univ. of Tokyo, 2.RCAST)

Keywords:solar to hydrogen energy conversion, DCDC converter, solar cell

Solar to hydrogen energy conversion is an promising technology for a power output fluctuation absorber, a large capacity long-term energy storage, etc. For a flexible system design, a DCDC converter should be inserted between solar cells and electrolyzers. In this study, a fail-safe design policy of solar cell - transformerless converter - water electrolyzer system is proposed. The I-V characteristic of a solar cell and the inductor in a transformerless converter are keys of this research.