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| A Type of Subsection Model for a Permanent Magnet Bar and its Leakage Permeance Calculation Method in an Open Magnetic Circuit |
| Journal of Magnetics, Volume 19, Number 1, 31 Mar 2014, Pages 37-42 |
Huimin Liang (School of Electrical Engineering and Automation, Harbin Institute of Technology), Jiaxin You *  (School of Electrical Engineering and Automation, Harbin Institute of Technology), Wenying Yang (School of Electrical Engineering and Automation, Harbin Institute of Technology), Guofu Zhai (School of Electrical Engineering and Automation, Harbin Institute of Technology) |
| Abstract |
The equivalent model of a permanent magnet (PM) plays an important role in electromagnetic system
calculation. A type of subsection model for a PM bar is established, to improve the accuracy of the traditional equivalent circuit method. The mathematical expression, and its end verification condition, are presented. Based on the analytical method and finite element method, the leakage permeance calculation of a PM bar in an open magnetic circuit is investigated. As an example, for a given certain type of PM bar, the magnetic flux of each section is validated by experiment, and by simulation. This model offers a foundation for building a high accuracy equivalent magnetic PM model in an electromagnetic system.
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| Keywords: analytical method; finite element method; magnetic field simulation; permanent magnet; leakage permeance |
| DOI: http://dx.doi.org/10.4283/JMAG.2014.19.1.037 |
| Full Text: PDF |
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