Analysis of levitation and propulsion forces and vibration control method of combined-levitation-and-propulsion SLIM

Takashi Yoshida, Hideaki Fujibe, Katsumi Kesamaru

Research output: Contribution to journalArticle


Based on the decoupled control method of levitation and thrust forces in a single-sided linear induction motor (SLIM), a compact combined-levitation-and- propulsion SLIM Maglev vehicle can be realized without any additional levitation magnet When the vehicle runs, the levitation and propulsion forces varies depending on the phase of primary current because of the short primary end effect Especially the fluctuation of the levitation force causes the vertical vibration of the vehicle. To realize a high performance levitation and propulsion control by only SLIM, these fluctuations must be restrained. In this paper, levitation and propulsion forces were analyzed by using space harmonic analysis method and combined-levitation-and- propulsion control taking the fluctuation of the levitation and propulsion forces into consideration was proposed. It was verified by simulation that a stable and high performance combined-levitation-and- propulsion control can be realized.

Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalResearch Reports on Information Science and Electrical Engineering of Kyushu University
Issue number1
Publication statusPublished - Mar 1 2009


All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Electrical and Electronic Engineering

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