Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13182
Title: Dynamic demagnetization computation of permanent magnet motors using finite element method with normal magnetization curves
Authors: Fu, WN 
Ho, SL 
Keywords: Demagnetization
Electric motor
Finite element method
Magnetic field
Nonlinear
Permanent magnet
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on applied superconductivity, 2010, v. 20, no. 3, 5422803, p. 851-855 How to cite?
Journal: IEEE transactions on applied superconductivity 
Abstract: A time-stepping finite element method (FEM) to simulate the transient operations of permanent magnet (PM) motors is presented. It uses only the normal magnetization curves to address the effects of irreversible demagnetization of PM materials. An effective algorithm to implement the methodology with nonlinear iteration is presented. A formulation of Newton-Raphson method using the true Jacobian matrix which is applicable to any type of elements and any order of elements with anisotropy materials is derived. A matrix method is introduced to express space vectors and the FEM formulation can be conveniently deduced.
URI: http://hdl.handle.net/10397/13182
ISSN: 1051-8223
EISSN: 1558-2515
DOI: 10.1109/TASC.2009.2039787
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