Hiroshi Fujimoto
Associate Professor / University of Tokyo

Outline: In University of Tokyo, a second-generation wireless in-wheel motor (W-IWM2) having the capability of dynamic wireless power transfer (D-WPT) on its wheel side has been developed. The D-WPT technology can drastically extend the driving range of electric vehicles.


In addition, a lithium-ion capacitor (LiC) is installed at the wheel side of the W-IWM2. The LiC can effectively charge the regenerative breaking energy. The W-IWM3, which is an evolution of the W-IWM2, is also developed to reduce the size and to increase the power. This talk introduces the development of the W-IWM2 and W-IWM3 with the experimental results.

Hiroshi Fujimoto received the Ph.D. degree in the Department of Electrical Engineering from the University of Tokyo in 2001. In 2001, he joined the Department of Electrical Engineering, Nagaoka University of Technology, Niigata, Japan, as a research associate. From 2002 to 2003, he was a visiting scholar in the School of Mechanical Engineering, Purdue University, U.S.A. In 2004, he joined the Department of Electrical and Computer Engineering, Yokohama National University, Yokohama, Japan, as a lecturer and he became an associate professor in 2005. He is currently an associate professor of the University of Tokyo since 2010.


He received the Best Paper Awards from the IEEE Transactions on Industrial Electronics in 2001 and 2013, Isao Takahashi Power Electronics Award in 2010, Best Author Prize of SICE in 2010, The Nagamori Grand Award in 2016, and First Prize Paper Award IEEE Transactions on Power Electonics in 2016.


His interests are in control engineering, motion control, nano-scale servo systems, electric vehicle control, motor drive, visual servoing, and wireless motors. Dr. Fujimoto is a senior member of IEE of Japan and IEEE. He is also a member of the Society of Instrument and Control Engineers, the Robotics Society of Japan, and the Society of Automotive Engineers of Japan.

電動車Electric Vehicle
Development of Wireless In - Wheel Motors ~From 2nd to 3rd Generation~