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Comparative Study of Armature Reaction Field Analysis for Tubular Linear Machine with Axially Magnetized Single-sided and Double-sided Permanent Magnet Based on Analytical Field Calculations
Journal of Magnetics, Volume 20, Number 1, 31 Mar 2015, Pages 79-85
Kyung-Hun Shin (Department of Electrical Engineering, Chungnam National University), Min-Gyu Park (Department of Electrical Engineering, Chungnam National University), Han-Wook Cho (Department of Electric, Electronic & Communication Eng. Edu., Chungnam National University), Jang-Young Choi * (Department of Electrical Engineering, Chungnam National University)
Abstract

This paper presents a comparative study of a Tubular Linear Machine (TLM) with an Axially Magnetized
Single-sided Permanent Magnet (AMSPM) and an Axially Magnetized Double-sided Permanent Magnet
(AMDPM) based on analytical field calculations. Using a two-dimensional (2-D) polar coordinate system and a magnetic vector potential, analytical solutions for the flux density produced by the stator windings are derived. This technique is significant for the design and control implementation of electromagnetic machines. The field solution is obtained by solving Maxwell’s equations in the simplified boundary value problem consisting of the air gap and coil. These analytical solutions are then used to estimate the self and mutual inductances. Two different types of machine are used to verify the validity of these model simplifications, and the analytical results are compared to results obtained using the finite element method (FEM) and experimental measurement.


 

Keywords: Tubular linear machine; Permanent magnet; armature reaction field; analytical solution
DOI: http://dx.doi.org/10.4283/JMAG.2015.20.1.079
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