Study on Effective Use of Regenerative Electric Power using 450kW Electric Road System

Kazuki Shimamura･Hina Tamiya (JARI)･Takamitsu Tajima (Honda R&D)

In order to significantly reduce CO₂ emissions, it is necessary to replace heavy-duty trucks traveling on highways with dynamic charging EVs. Sufficient regeneration may not be possible due to battery capacity, SOC status, and internal resistance because the regenerative electric power of heavy-duty vehicles when driving down slope is large. Therefore, we studied the effects of retransmitting the regenerated electric power to ERS.

Introduction of Current Collectors Used in Electric Railway, Their Characteristics, and Test Method

Tatsuya Koyama (Railway Technical Research Institute)

Various types of current collectors adapted to various types of contact lines are used in electric railways. This paper provides an overview of current collectors used in electric railways and their characteristics for contributing to the development of contact power supply technology for EV. Furthermore, the test methods for evaluating the characteristics of current collectors are also introduced.

Introduction of Sliding Contact Materials Used in Current Collecting System of Electric Railway and Their Wear Property

Yoshitaka Kubota (Railway Technical Research Institute)

Current collectors in electric railways employ various sliding contact materials, such as sintered alloys and carbon-based composite materials, depending on the intended purpose. This paper provides an overview of the materials and discusses the wear in the field and wear factors, for contributing to the development of contact power supply technology for EV.

Overview and Technical Evaluation of Dynamic Conductive Road Charging Technologies

Saleh Ali･Volker Pickert (Newcastle University)･Mohammed Alharbi (Taibah University)

The concept of dynamic conductive power transfer (DCPT) is well-established and has been extensively employed in railway systems for several decades. However, the adaptation of DCPT for road traffic encounters significant challenges, particularly in the creation of practical, safe, and reliable mechanical interfaces that seamlessly integrate into both vehicles and road infrastructure. Consequently, the development of conductive Electric Road System (ERS) solutions has primarily been driven by industry efforts, resulting in limited information regarding detailed design procedures and optimization methods for the electrical and mechanical components involved in dynamic power transfer. This paper reviews and evaluates the available ERS technologies.