Fractional Slot Concentrated Winding PMSM With Consequent Pole Rotor for a Low-Speed Direct Drive: Reduction of Rare Earth Permanent Magnet

Author

Shi-Uk Chung ; Ji-Won Kim ; Yon-Do Chun ; Byung-Chul Woo ; Do-Kwan Hong

Author_Institution

Electr. Motor Res. Center, Korea Electrotechnol. Res. Inst., Changwon, South Korea

Volume

30

Issue

1

fYear

2015

fDate

Mar-15

Firstpage

103

Lastpage

109

Abstract

This paper deals with a 44pole-48slot fractional slot concentrated winding permanent magnet synchronous machine (FSCW PMSM) for a low-speed direct drive. Two different rotor topologies, a surface permanent magnet (SPM) rotor and a consequent pole (CP) rotor, are optimized and compared both analytically and experimentally. The experimental results confirmed that an FSCW PMSM with a CP rotor can achieve almost equivalent performance at the rated state when compared to an FSCW PMSM with an SPM rotor with 33% less permanent magnet material.

Keywords

machine windings; permanent magnet motors; rotors; synchronous motor drives; 44pole-48slot fractional slot concentrated winding permanent magnet synchronous machine; FSCW PMSM; SPM rotor; consequent pole rotor; fractional slot concentrated winding PMSM; low-speed direct drive; permanent magnet material; rare earth permanent magnet reduction; rotor topologies; surface permanent magnet rotor; Materials; Optimization; Power capacitors; Rotors; Topology; Torque; Windings; Consequent pole (CP); direct drive; fractional slot; permanent magnet synchronous machine (PMSM); response surface methodology (RSM);

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2014.2352365

Filename

6909047