Session｜2026 JSAE Annual Congress (Spring)

Session No.16 Electric Road System (Dynamic Charge and Power Supply) II (OS)
May 27 Pacifico Yokohama North G316+G317 14:45-16:00
Chair: Junya Yamakawa (National Defense Academy)

Contents: Proliferation of electric vehicles (EV) is the key to reduce CO2 emissions while driving vehicles. However, there are issues which need to be solved such as cruising range, charging method, and spread of EVs among large-sized transport vehicles. We will discuss Electric Road System (Dynamic charge and power supply) technology using ground infrastructure to directly supply charge running EVs with electricity. In this session, various systems such as contact type (conductive type) and non-contact type (wireless type) will be discussed.
Committee: Vehicle Characteristics Design Committee
Organizer: Takamitsu Tajima (Honda R&D), Junya Yamakawa (National Defense Academy of Japan), Hitoshi Tsunashima (Nihon University), Yasuji Shibahata (Kanagawa Institute of Technology), Takayuki Satou (Hitachi Construction Machinery), Kazuki Shimamura (JARI), Masaki Asano (Isuzu Advanced Engineering Center), Ryuzo Hayashi (Tokyo University of Science), Yoshihisa Hojo (Toyo Denki Seizo)

For presentations that will not be available video streaming after congress, a “✕” is displayed in the “Video” column, so please check.
No.	Video	Title･Author (Affiliation)
068	◯	Wireless Charging for Electric Road Vehicles: Challenges and Opportunities in Standards, Technology, and Energy Management Steven Wilkins･Subhajeet Rath･Jan-Willem Sangers･Paul Mentink (TNO) Wireless charging (wireless power transfer, WPT) for electric road vehicles is moving from prototypes toward pilots and early products, motivated by convenience, automation readiness, and the potential to reduce battery size through opportunity charging and dynamic wireless power transfer (DWPT). This paper reviews key challenges and opportunities for static and dynamic WPT, focusing on interoperability and standardization (IEC 61980 family, SAE J2954, ISO 15118), core technologies (magnetic couplers, power electronics, alignment, safety sensing, EMC and EMF), and enabling energy management from vehicle to grid and fleet levels. We highlight where standards already provide a foundation and where gaps remain for scalable deployment, especially for DWPT and heavy duty applications.
069	◯	Power Supply Technologies for Battery-Powered Trains Hiroshi Yoda (Railway Technical Research Institute) The deployment of battery-powered trains is expanding worldwide as a promising solution to accelerate decarbonization in non-electrified lines. This presentation provides an overview of the contact-based charging systems currently in commercial operation and introduces the development progress of wireless power transfer (WPT) technologies.
070	◯	Development of a Solar Irradiance Estimation Method for Onboard PV Systems Shuai Pei･Masaaki Yanagi･Toshio Hirota･Yushi Kamiya (Waseda University) Due to shading from buildings and trees, solar irradiance received by onboard PV systems is lower than that of stationary PV systems. This study measured vehicle and fix-point irradiance under sunny and cloudy weather across various urban, suburban, and expressway routes. The measured data was analyzed to clarify how these diverse driving and weather conditions specifically influence the ratio between vehicle and fixed-point irradiance (V/F). Furthermore, a practical method for estimating vehicle irradiance was constructed with the insights obtained from this analysis.