Optimized Design of 8-Figure Null-Flux Coils in EDS Maglev.

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  • Murai Toshiaki
    Research & Development Division, Maglev Systems Development Department, Railway Technical Research
  • Iwamatsu Masaru
    Research & Development Division, Maglev Systems Development Department, Railway Technical Research
  • Yoshioka Hiroshi
    Research & Development Division, Maglev Systems Development Department, Railway Technical Research

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Other Title
  • 超電導磁気浮上方式における８字型コイル諸元の最適化
  • チョウデンドウジキ フジョウ ホウシキ ニ オケル 8ジガタ コイル ショゲン ノ サイテキカ

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Description

The 8-figure null-flux ground coils in EDS (Electro-Dynamic Suspension) including the PLG (combined Propulsion, Levitation and Guidance) system, which can both suspend and propel maglev vehicles simultaneously, have mainly longitudinal and vertical dimensions such as coil pitch and heights of upper and lower coils. In this paper we investigate these dimensions not only to balance the basic performance for levitation, guidance and propulsion, but also to reduce magnetic disturbance of superconducting magnet. By using an optimization program, we induced the relationship between the basic performance and these dimensions. Furthermore, by implementing a modal analysis, we predicted the vibration of superconducting magnet in different pitches, and thereby proposed these dimensions to decrease the vibration.

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