Development and performance evaluation of an electric mini bus equipped with an inductive charging system

Thomas Pontefract*, Kimiyoshi Kobayashi, Yuto Miyasaka, Kento Tanaka, Yushi Kamiya, Yasuhiro Daisho, Shunsuke Takahashi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


The limited range, high cost and long charging time of electric vehicles continue to stand in the way of their widespread adoption. In response to this, our research group has created the "Waseda Electric mini Bus (WEB)" series of vehicles based on a short range, frequent charging concept that minimises the weight and cost of batteries compared to other electric vehicles. This paper reports on the design, construction and performance evaluation of the new "Waseda advanced Electric mini Bus 3 (WEB-3)", which is larger than previous vehicles and utilises an improved inductive power supply (IPS) for non-contact rapid charging. A diesel bus was converted to an EV, and the engine, flywheel and clutch were removed, reducing the vehicle's rotating weight by 80 %. A new inductive charging system was designed and fabricated, allowing non-contact rapid charging from a transmission coil in the road surface over a longer air gap of 140 mm, at 92 % efficiency.The finished WEB-3 was tested on public roads in Honjo and Kumagaya cities, Saitama prefecture, Japan. An effective reduction in CO2 emissions of 60 % over the original diesel bus was achieved.

Original languageEnglish
Title of host publicationProceedings of the FISITA 2012 World Automotive Congress
Number of pages11
EditionVOL. 4
Publication statusPublished - 2013
EventFISITA 2012 World Automotive Congress - Beijing, China
Duration: 2012 Nov 272012 Nov 30

Publication series

NameLecture Notes in Electrical Engineering
NumberVOL. 4
Volume192 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


ConferenceFISITA 2012 World Automotive Congress


  • Electric bus
  • Inductive charging system
  • Lithium-ion battery
  • Rapid charging
  • Short-range

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering


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