Design improvement of permanent magnet flux switching motor with dual rotor structure

This paper presents design enhancement to reduce permanent magnet (PM) volume for 7S-6P-7S dual rotor permanent magnet flux-switching machines (DRPMFSM) for electric vehicle application. In recent years, Permanent magnet flux switching (PMFS) motor and a new member of brushless permanent magnet mach...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-08, Vol.226 (1), p.12126
Main Authors: Soomro, H. A., Sulaiman, E., Kumar, R., Rahim, N. S.
Format: Article
Language:English
Subjects:
Brushless motors
Cogging
Design
Design improvements
Electric vehicles
Finite element method
Magnetism
Optimization
Permanent magnets
Rare earth elements
Rotors
Switching
Torque
Two dimensional analysis
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Summary:This paper presents design enhancement to reduce permanent magnet (PM) volume for 7S-6P-7S dual rotor permanent magnet flux-switching machines (DRPMFSM) for electric vehicle application. In recent years, Permanent magnet flux switching (PMFS) motor and a new member of brushless permanent magnet machine are prominently used for the electric vehicle. Though, more volume of Rare-Earth Permanent Magnet (REPM) is used to increase the cost and weight of these motors. Thus, to overcome the issue, new configuration of 7S-6P- 7S dual rotor permanent magnet flux-switching machine (DRPMFSM) has been proposed and investigated in this paper. Initially proposed 7S-6P-7S DRPMFSM has been optimized using "deterministic optimization" to reduce the volume of PM and to attain optimum performances. In addition, the performances of initial and optimized DRPMFSM have been compared such that back-emf, cogging torque, average torque, torque and power vs speed performances, losses and efficiency have been analysed by 2D-finite element analysis (FEA) using the JMAG- Designer software ver. 14.1. Consequently, the final design 7S-6P-7S DRPMFSM has achieved the efficiency of 83.91% at reduced PM volume than initial design to confirm the better efficient motor for HEVs applications.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/226/1/012126