Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2198800