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Design and Analysis of Double-Sided Dislocated High Speed Permanent Magnet Linear Synchronous Motors |
Kou Baoquan, Ge Qingwen, Zhang Haoquan, Niu Xu, Huang Changchuang |
School of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150001 China |
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Abstract As for the traditional 4-pole 6-slot double-sided symmetrical long primary permanent magnet linear synchronous motor, under the condition of ensuring the electromagnetic thrust, an effective method to reduce the permanent magnet eddy current loss was proposed by adopting bilateral dislocation. The basic structure of the motor was introduced. The double-sided dislocation structure could completely eliminate the even number of armature harmonic magnetomotive force, thereby greatly reducing the permanent magnet eddy current loss. The finite element analysis (FEA) software was adopted to analyze the detent forces of symmetric and dislocation structures, the electromagnetic thrust and the secondary eddy current losses. The accuracy of the dislocation method was proved and the structure was optimized. At last, a prototype was developed, and its back-electromotive force (back-EMF), detent force and static thrust were measured through an experimental platform.
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Received: 07 July 2020
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About author:: Si Jikai born in 1973, PhD, Major research interests include the theory, application, and control of special motor design. E-mail: sijikai527@126.com |
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