Quantitative Comparison for Fractional-Slot Concentrated-Winding Configurations of Permanent-Magnet Vernier Machines

Author

Junqin Yang ; Guohai Liu ; Wenxiang Zhao ; Qian Chen ; Yicheng Jiang ; Longgang Sun ; Xiaoyong Zhu

Author_Institution

Schoolof Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China

Volume

49

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

3826

Lastpage

3829

Abstract

This paper compares the fractional-slot concentrated-winding (FSCW) configurations of permanent-magnet vernier (PMV) machines. The representative three-phase FSCW PMV machines with 12 slots are considered, in which the number of slots per pole per phase (SPP) is 1/2, 2/5 and 2/7. Each SPP relates to two winding configurations, namely double-layer and single-layer. Based on the same electric loading, they are designed to have the same peripheral dimensions. The star of slots is applied to analyze these FSCW PMV machines initially including winding connection, winding factors. A simple method to analyze the order of the largest harmonic of PMV machines with SPP <; 1/2 induced by armature windings is proposed. By using the time-stepping finite-element method (TS-FEM), the performances of the proposed FSCW PMV machines are analyzed and compared quantitatively.

Keywords

finite element analysis; machine windings; permanent magnet machines; FSCW configurations; PMV machines; SPP; TS-FEM; double-layer; electric loading; fractional-slot concentrated-winding configurations; permanent-magnet vernier machines; single-layer; slots per pole per phase; three-phase FSCW PMV machines; time-stepping finite-element method; winding connection; winding factors; Coils; Harmonic analysis; Modulation; Power capacitors; Rotors; Torque; Windings; Concentrated windings (CWs); finite-element method (FEM); fractional slot; permanent-magnet (PM) machine; vernier machine;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2243407

Filename

6559159