A Novel Direct-Drive Permanent Magnet Synchronous Motor with Toroidal Windings

Caixia Gao, Mengzhen Gao, Jikai Si, Yihua Hu and Chun Gan
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Caixia Gao: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
Mengzhen Gao: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
Jikai Si: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
Yihua Hu: Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3BX, UK
Chun Gan: Department of Electrical Engineering and Computer Science, Huazhong University of Science & Technology, Wuhan 430074, China

Energies, 2019, vol. 12, issue 3, 1-14

Abstract: A direct-drive motor has the merits of low speed, high torque, and elimination of mechanical deceleration mechanisms, and is widely used in various fields. A novel direct-drive permanent magnet synchronous motor is presented herein, in which all coils are wrapped around the stator yoke in the same orientation. The structure of the novel direct-drive permanent magnet synchronous motor with toroidal windings (N-TWDDPMSM) is introduced and its operating principle is analyzed by describing the variation in the armature magnet field versus time. Furthermore, based on the same power grade and mechanical size, several finite-element models of motors with different windings are established using Magnet software to analyze the distribution of magnetic field, back-electromotive force (back-EMF), power-angle characteristics, loss characteristics, etc. Compared with the traditional permanent magnet synchronous motor (T-PMSM), the traditional permanent magnet synchronous motor with toroidal windings (T-TWPMSM), and the N-TWDDPMSM, the N-TWDDPMSM shows advantages of low speed and high torque, and the feasibility and superiority of the N-TWDDPMSM are verified.

Keywords: toroidal windings; permanent magnet synchronous motor; finite-element model; motor characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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