Equivalent Magnetic Circuit Based Levitation Force Computation of Controlled Permanent Magnet Levitation System

Author

Cho, Han-Wook ; Yu, Ju-Seong ; Jang, Seok-Myeong ; Kim, Chang-Hyun ; Lee, Jong-Min ; Han, Hyung-Suk

Author_Institution

Dept. of Electr., Electron., & Commucation Eng., Chungnam Nat. Univ., Daejeon, South Korea

Volume

48

Issue

11

fYear

2012

Firstpage

4038

Lastpage

4041

Abstract

This paper proposes an analytical levitation force computation method using the equivalent magnetic circuit (EMC) of a controlled-permanent magnet (CPM) levitation system that has potential applications in a magnetically levitated vehicles. The airgap field and levitation force characteristics of the CPM are investigated using the EMC, considering airgap fringing and leakage flux path for longitudinal and lateral direction surfaces. The computation results are validated using finite-element analysis and experimental results. The levitation performance was tested using a dynamic force test facility, which confirms the validity of the EMC computation scheme for the description of a CPM levitation system.

Keywords

air gaps; equivalent circuits; magnetic circuits; magnetic leakage; magnetic levitation; permanent magnets; air gap fringing; controlled permanent magnet levitation system; equivalent magnetic circuit; leakage flux; levitation force computation; magnetically levitated vehicle; Electromagnetic compatibility; Finite element methods; Force; Magnetic cores; Magnetic levitation; Permanent magnets; Controlled-permanent-magnet (CPM) levitation system; equivalent-magnetic-circuit; levitation force; magnetically levitated vehicle;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2198800

Filename

6333024