The authors have been carrying out a preliminary study on the design of microgrid. Designing microgrid includes selection and capacity determination of power supply devices according to their response characteristics, efficiency and initial cost, and development of methods for integrated control to maintain power quality and efficiency. Both design and control methods depend on conditions of loads, for which microgrid is installed. In this paper, design methods of microgrid, such as power demand analysis, response characteristics measurement of power sources and fuel efficiency measurement of enginegenerators, and integrated control methods for power sources are proposed, along with experimental results for a prototype of microgrid.Katsuya NISHIKAWA was born in Kyoto, Japan on June 20, 1982. He received a B.E. degree in Electrical Engineering from the University of Tokyo in 2004. He is now a student of the master cource of the University of Tokyo. His areas of interest are power electronics and electrical machines.
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