Numerical modelling of a flux-barrier SynchRel motor including punching effect

Abstract

Purpose

Estimating the punching process’s impact on the operating parameters of an electrical motor is a special problem especially in the case of fractional power motors. The purpose of this paper is to discuss a method of numerical modelling that is useful for this case.

Design/methodology/approach

The proposed multi-physical FEM approach is based on using professional software in the process of modelling and determining the operating parameters of a low power motor. The basic elements of the approach are built FEM models for which the parameters characterising the damaged portions of the magnetic material were determined. The material properties of this zone were determined both by measurement and by a new analytical approach described in this paper.

Findings

The paper formulates the impact of punching on the operating parameters of a low power motor. Moreover, it formulates the analytical algorithm for the estimation of properties of material in damaged zones.

Research limitations/implications

Experimental verification will still be needed to check the model’s accuracy and applicability to various magnetic materials.

Practical implications

The paper provides an easy approach enabling the calculation of motor operating parameters and a simple and useful algorithm to estimate magnetic material properties in the damaged zone.

Originality/value

The analytical algorithm, as presented here, in conjunction with the measurement results is useful and applicable to estimating the magnetic material properties, which form the basis for accurate FEM calculation.

Citation

Lefik, M. and Gmyrek, Z. (2016), "Numerical modelling of a flux-barrier SynchRel motor including punching effect", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 35 No. 6, pp. 2022-2034. https://doi.org/10.1108/COMPEL-03-2016-0090