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Implementation of the sliding-line technique in a MEC model of a linear bistable actuator

Shinara Utegenova (Direct Drive Actuators Department, Moving Magnet Technologies, Besancon, France)

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

ISSN: 0332-1649

Article publication date: 2 December 2021

Issue publication date: 11 January 2022

65

Abstract

Purpose

The aim of this study is to investigate the implementation of the sliding-line technique (SLT) in a generic two-dimensional (2D) nonlinear adaptive magnetic equivalent circuit (MEC) model predicting the electromagnetic force evolution of a linear bistable electromagnetic actuator technology.

Design/methodology/approach

The developed MEC model considers the saturation effect and the auto-adjustability of the spatial discretisation. The connection between static and mobile zones is ensured by an approach known as “air-gap sliding-line technique”, which is widely used for rotary electric motor models. To the best of the author’s knowledge, that is the first time that the SLT is implemented on an electromagnetic structure with linear motion.

Findings

It was found that, in case of a linear actuator with a relatively small working stroke, the implementation of the SLT could lead to some non-negligible inaccuracies.

Originality/value

To solve the above-mentioned problem, it was proposed to investigate the implementation of a single SLT vs double SLT. The results of the MEC models were compared with the 2D finite-element analysis (FEA) as well as with the experimental test results. The developed semi-analytical models can be easily adapted to other topologies of linear electromagnetic machines.

Keywords

Citation

Utegenova, S. (2022), "Implementation of the sliding-line technique in a MEC model of a linear bistable actuator", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 41 No. 1, pp. 517-527. https://doi.org/10.1108/COMPEL-07-2021-0230

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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