Riku Kobayashi (M1) from the Department of Electrical Engineering and Information Systems received the Best Student Paper Award at the IEEE WPTCE 2025.

Name of award and short explanation about the award

"IEEE WPTCE 2025, Best Student Paper Award" IEEE Wireless Power Technology Conference and Expo (WPTCE) is one of the world's largest international conferences in the field of wireless power transfer. Out of 238 accepted papers, one paper was selected for each of the Best Paper Award and the Best Student Paper Award.

About awarded research(activity)
In wireless power transfer, array structures with multiple transmitter coils are often used. However, when attempting to extend or deform the powering area, interference between coils can create regions where power transfer efficiency significantly deteriorates. In our research, we addressed this issue by proposing a mechanism that autonomously cancels out such interference through contact between adjacent coils, thereby enabling a uniform powering range. Based on both simulations and experimental measurements, we evaluated the proposed mechanism and demonstrated that stable power transfer can be achieved at any position regardless of the coil arrangement. R. Kobayashi, Y. Kawahara, and T. Sasatani, “Passive Reactance Compensation for Shape-Reconfigurable Wireless Power Transfer Surfaces,” IEEE WPTCE 2025, Rome, Italy, June 2025. https://arxiv.org/abs/2503.02183

Your impression & future plan
I am truly honored to receive such an award. I would like to express my sincere gratitude to all the members of my laboratory who supported the writing of the paper and the preparation for the conference presentation, as well as to my family for their continuous support. Moving forward, I aim to further deepen the analysis of this research and actively engage in new research themes.