Consequent-Pole Toroidal-Winding Outer-Rotor Vernier Permanent-Magnet Machines

Author

Dawei Li ; Ronghai Qu ; Jian Li ; Wei Xu

Author_Institution

Sch. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

51

Issue

6

fYear

2015

Firstpage

4470

Lastpage

4481

Abstract

A novel consequent-pole toroidal-winding outer-rotor (CPTW) Vernier permanent-magnet (VPM) machine is proposed in this paper. Different from a regular VPM machine, the stator and rotor of the proposed machine employ the consequent-pole and toroidal-winding configurations, which can significantly reduce magnet consumption, shorten the end-winding length, and improve the torque density. It is proved by a finite-element algorithm and prototype experiments that this machine can exhibit ~20% higher back electromotive force and electromagnetic torque than that of a regular VPM machine, whereas its magnet consumption is only ~60% of that in a regular VPM machine.

Keywords

electric potential; finite element analysis; permanent magnet machines; rotors; stators; torque motors; CPTW; VPM machine; Vernier permanent magnet machines; back electromotive force; consequent pole toroidal winding outer rotor; electromagnetic torque; end winding length; finite element algorithm; magnet consumption; stator; torque density; Magnetic flux; Rotors; Stator windings; Toroidal magnetic fields; Torque; Windings; Consequent pole; Consequent-pole; finite element algorithm; finite-element algorithm; outer-rotor Vernier permanent-magnet (VPM) machine; outer-rotor vernier permanent magnet machine; toroidal winding; toroidal-winding; torque density;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2015.2458953

Filename

7163578