Yi-Hua Liu(Member, IEEE) received his Ph.D. degree in electrical engineering from the National Taiwan University, Taipei, Taiwan, in 1998. He joined the Department of Electrical Engineer- ing, Chang Gung University, Taoyuan, Taiwan, in 2003. He is currently with the Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei. His current research interests include power electronics and battery management.