85 kHz band 44 kW wireless rapid charging system for field test and public road operation of electric bus

Shuichi Obayashi, Tetsu Shijo, Masatoshi Suzuki, Fumi Moritsuka, Kenichirou Ogawa, Koji Ogura, Yasuhiro Kanekiyo, Masaaki Ishida, Toru Takanaka, Nobumitsu Tada, Fumiaki Takeuchi, Shunsuke Take, Yoshihiko Yamauchi, Wei hsiang Yang, Yushi Kamiya

Research output: Contribution to journalArticle

Abstract

Wireless charging technology for heavy-duty vehicles has been investigated for eco-friendly transportation. We present a new wireless power transfer system for 44 kW rapid charging of electric buses. The transmission distance between the charging pads is from 10 to 13 cm. The large air gap can be fulfilled by the ordinary kneeling function, equipped on most low-floor buses. Dual-block parallel transmission with opposite-phase-current-feeding suppresses magnetic radiation. The system operates in the common 85 kHz band with the light-duty vehicle system. The result of the field test and the public road operation of two electric buses confirm the CO2 reduction effect described.

Original languageEnglish
Article number26
JournalWorld Electric Vehicle Journal
Volume10
Issue number2
DOIs
Publication statusPublished - 2019 Jun 1

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Keywords

  • CO reduction
  • Electric bus
  • Magnetic emission
  • Rapid charging
  • Wireless battery charging

ASJC Scopus subject areas

  • Automotive Engineering

Cite this

Obayashi, S., Shijo, T., Suzuki, M., Moritsuka, F., Ogawa, K., Ogura, K., Kanekiyo, Y., Ishida, M., Takanaka, T., Tada, N., Takeuchi, F., Take, S., Yamauchi, Y., Yang, W. H., & Kamiya, Y. (2019). 85 kHz band 44 kW wireless rapid charging system for field test and public road operation of electric bus. World Electric Vehicle Journal, 10(2), [26]. https://doi.org/10.3390/wevj10020026