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Torque ripples reduction in a synchronous reluctance motor by rotor parameters optimization

Mohammad Reza Naeimi, Karim Abbaszadeh, Reza Nasiri-Zarandi

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 5 October 2021

Issue publication date: 11 November 2021

314

Abstract

Purpose

High torque ripple is the significant challenge of the synchronous reluctance machine in household electric appliances, electric vehicles and so on. This paper aims to present an optimized design of a synchronous reluctance rotor structure to reduce the torque ripple with improving the average torque by the particle swarm optimization (PSO) algorithm.

Design/methodology/approach

The optimization of rotor geometries has been investigated. Most of the rotor parameters such as the width of iron parts, the width of barriers along d and q axes and the endpoint angle of barriers are optimized by a new method using the PSO algorithm. After optimization, the resulted optimum design along with the initial design is simulated by two-dimensional finite element method and results are compared. At the end, a prototype is constructed and tested. Results of the experiment are compared with the simulation results where acceptable adoption is yielded.

Findings

Minimizing the torque ripple without losing the average torque is an important achievement of the synchronous reluctance motor (SynRM) optimization; furthermore, the finite element analysis and experimental results indicate that the torque ripple of the SynRM with the optimized rotor is reduced significantly. Also, increasing the number of optimization parameters can effectively obtain an accurate shape of the SynRM barrier.

Originality/value

Because of the high number of parameters in synchronous reluctance rotors, the majority of proposed optimizations did not use all geometric parameters of the rotor and tried to simplify the optimization by ignoring several optimization parameters or reducing the number of flux barriers. In this optimization, most of the rotor parameters have been used to achieve the precise barrier shape with the aim of reducing the torque ripple in SynRM.

Keywords

Citation

Naeimi, M.R., Abbaszadeh, K. and Nasiri-Zarandi, R. (2021), "Torque ripples reduction in a synchronous reluctance motor by rotor parameters optimization", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 40 No. 6, pp. 1053-1066. https://doi.org/10.1108/COMPEL-11-2020-0362

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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