User-Friendly Wireless Charging with Capacitive Coupling in Electric Scooters (First Report)

Shinji Abe･Ryoya Honda･Yuki Aoyagi･Ryuya Kurosawa･Kazuo Matsuno･Minoru Mizutani (Power Wave)

With the proliferation of sharing services, the responsibility for charging electric kick scooters has shifted from users to operators. This presentation will focus on innovative thin, wide-range capacitive coupling wireless charging technology that reduces the charging burden for service providers. We will discuss the potential implications of wireless power for the future of mobility, particularly for electric vehicles (EVs).

Radiated Emission Reduction of Wireless Power Transfer System with Flying Capacitor ARCP Converter

Rintaro Kusui･Keisuke Kusaka･Hiroki Watanabe･Jun-Ichi Itoh (Nagaoka University of Technology)

This paper proposes the wireless power transfer system with flying capacitor axiliary resonant pole converter. The proposed system reduces the radiated emission harmonics by applying the multilevel voltage to the resonator and suppresses the increase of the switching losses.

Proposal of Overhead Reduction for Dynamic Wireless Power Transfer System

Atsuo Hatono (Nippon Institute of Technology)

On power transfer for a moving vehicle, Q-value of receivers is much larger than that of transmitters because of loads.　This effect enables us parallel energy transfer by spread spectrum.

Required Battery Capacity of EVs Assuming Optimal Locations of In-Motion Wireless Power Transfer System

Yudai Honma･Daisuke Hasegawa･Katsuhiro Hata･Takashi Oguchi (The University of Tokyo)

In-motion Wireless Power Transfer System (WPTS) is gaining attention as infrastructure to support electric vehicle (EV) mobility. This study assumes optimal locations of WPTSs in urban areas and analyzes battery consumption patterns in EV mobility. By simulating EV charging and discharging patterns while considering acceleration, deceleration, and traffic signals, the study discusses the required battery capacity.

150kW Dynamic Wireless Power Transfer Inverter Control Technology

Jin Katsuya･Shuji Kawano･Kenichiro Takahashi (Honda R&D)

Dynamic wireless charging of electric vehicles (EVs) will significantly extend the range of EVs, thus increasing the potential for electrification of passenger cars. However, ensuring electromagnetic compatibility (EMC) becomes a challenge at high power transfer. In this paper, 150kW dynamic wireless power transfer method is described. The results are evaluated through D-WPT experiment and static EMC experiments.

Report on the Burial of 2023 Years Coils for Dynamic Wireless Power Transfer on Asphalt Roads Equivalent to N6 Traffic Volume

Takehiro Imura･Takahiro Yamahara･Naoya Sasa･Ichitaku Kaku･Yoichi Hori (Tokyo University of Science)･Hiroyuki Mashito･Nagato Abe (Toa Road)

An asphalt road equivalent to N6 traffic volume was constructed on the Noda campus of the Tokyo University of Science. Coils for dynamic wireless power transfer, created in 2023, were buried, tested, and evaluated.
The project has been conducted for three consecutive years since 2021, and this year will be the third year.