Asymmetric air gap fault detection in linear permanent magnet Vernier machines
ISSN: 0332-1649
Article publication date: 9 November 2023
Issue publication date: 21 November 2023
Abstract
Purpose
The aim of this paper is to introduce an accurate asymmetric fault index for the diagnosis of the faulty linear permanent magnet Vernier machine (LPMVM).
Design/methodology/approach
Three-dimensional finite element method is applied to model the LPMVM. The geometrical and physical properties of the machine, the effect of stator and translator teeth, magnetic saturation of core and nonuniform air gap due to asymmetric fault are taken into account in the simulation. The air gap asymmetric fault is proposed. This analytical method estimates the air gap flux density of an LPMVM.
Findings
This paper presents an analytical method to predict the performance of a healthy and faulty LPMVM. The introduced index is based on the frequency patterns of the stator current. Besides, the robustness of the index in different loads and fault severity is addressed.
Originality/value
Introducing index for air gap asymmetry fault diagnosis of LPMVM.
Keywords
Citation
Arianborna, M., Faiz, J., Ghods, M. and Erfani-Nik, A. (2023), "Asymmetric air gap fault detection in linear permanent magnet Vernier machines", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 42 No. 5, pp. 1175-1186. https://doi.org/10.1108/COMPEL-12-2022-0443
Publisher
:Emerald Publishing Limited
Copyright © 2023, Emerald Publishing Limited