He received the B.S. Eng., the M.S .Eng. and the Dr. Eng. Degrees in Electrical Engineering from Yamaguchi University, Yamaguchi, Japan in 2000, 2002 and 2005 respectively. He worked at Kawasaki Heavy Industries, Ltd., Kobe, Japan from 2005 to 2016, where he was engaged in the development of the next-generation, battery-driven, low-floor light rail vehicle (LRV) and the advanced wayside energy storage system for electric railways in New York City Transit (NYCT), Washington Metropolitan Area Transit Authority (WMATA) and Tokyo Monorail Co., Ltd., Japan. His current interests include circuit design and integration of high-frequency soft switching power converters, power electronics applications in home appliances, transportation and renewable energy systems.