Design of non-contact power supply system coils for railway vehicles focusing on magnetic coupling characteristics and loss in rail

Keigo Ukita, Takayuki Kashiwagi, Yasuaki Sakamoto, Keiichiro Kondo

研究成果: Article

抄録

In a non-contact power supply system for railway vehicles, eddy current and hysteresis losses caused by leakage flux pose a problem for power transmission efficiency because the transmission coil is installed near a rail. To solve this problem, we proposed a figure-of-eight coil shape capable of decreasing the leakage flux. However, the coupling factor of the figure-of-eight coil is smaller than that of a rectangular coil when the coil width is the same and the influence of the rail is neglected. In this study, the magnetic coupling characteristics and loss the in rail with the respect to the width of the figure-of-eight and rectangular coils were evaluated by analysis and experiment. The results contribute to design methods for the coil shape and width of non-contact power supply systems for railway vehicles.

元の言語English
ページ(範囲)518-525
ページ数8
ジャーナルIEEJ Transactions on Industry Applications
137
発行部数6
DOI
出版物ステータスPublished - 2017 1 1
外部発表Yes

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Magnetic couplings
Electric power systems
Rails
Fluxes
Eddy currents
Power transmission
Hysteresis
Experiments

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

これを引用

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AB - In a non-contact power supply system for railway vehicles, eddy current and hysteresis losses caused by leakage flux pose a problem for power transmission efficiency because the transmission coil is installed near a rail. To solve this problem, we proposed a figure-of-eight coil shape capable of decreasing the leakage flux. However, the coupling factor of the figure-of-eight coil is smaller than that of a rectangular coil when the coil width is the same and the influence of the rail is neglected. In this study, the magnetic coupling characteristics and loss the in rail with the respect to the width of the figure-of-eight and rectangular coils were evaluated by analysis and experiment. The results contribute to design methods for the coil shape and width of non-contact power supply systems for railway vehicles.

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