A microgrid comprising an interconnected solid oxide fuel cell and hydraulic generator for use in a sustainable city

Mechanical Engineering Journal

Shin’ya OBARA¹  Takao KATSURA²  Katsunori NAGANO²  Jorge MOREL²  Yoshitaka SAKATA²  Kazushige KIKUTA³ 

[1] Department of Electrical and Electronic Engineering, Kitami Institute of Technology;Faculty and Graduate School of Engineering, Hokkaido University;National Institute of Technology, Tomakomai College;

关键词: microgrid;    power fluctuation;    solid-oxide fuel cell;    hydraulic power generation;    renewable energy;   

DOI  :  10.1299/mej.16-00469

来源: DOAJ

【 摘 要 】

Direct current systems that lack an inertial force, such as fuel cells or photovoltaics, are expected to be used for electrical power in advanced sustainable cities. A small-capacity transmission network (microgrid) without inertial force has difficulties for converging short-term electric power fluctuations. Consequently, the frequency of transmission on such networks frequently diverges. Therefore, the electric power fluctuation due to cyclic fluctuation of an interconnected system of clean and renewable power sources (namely a solid oxide fuel cell (SOFC)-hydraulic generator, photovoltaics, and a wind-power generator) is investigated by numerical analysis in this study, together with means of controlling it. The characteristics of this fluctuation are clarified, and the setting range required to control the cyclic fluctuation of the transmission network is illustrated based on the relation between the inertial force of the hydraulic generator and battery (lithium ion) capacity.

【 授权许可】

Unknown