Modelling of a permanent magnet synchronous machine using isogeometric analysis

Prithvi Bhat (Intsitut Theorie Elektromagnetischer Felder, Technische Universität Darmstadt, Darmstadt, Germany)
Zeger Bontinck (Intsitut Theorie Elektromagnetischer Felder, Technische Universität Darmstadt and the Graduate School of Computational Engineering, Technische Universität Darmstadt, Germany)
Jacopo Corno (Intsitut Theorie Elektromagnetischer Felder, Technische Universität Darmstadt and the Graduate School of Computational Engineering, Technische Universität Darmstadt, Germany)
Sebastian Schöps (Intsitut Theorie Elektromagnetischer Felder, Technische Universität Darmstadt and the Graduate School of Computational Engineering, Technische Universität Darmstadt, Germany)
Herbert DeGersem (Intsitut Theorie Elektromagnetischer Felder, Technische Universitat Darmstadt, Darmstadt, Germany)

Abstract

Purpose

This paper aims to propose the use of isogeometric analysis (IGA) for the simulation of electrical machines to represent their geometries exactly and obtain numerical solutions of high accuracy and regularity.

Design/methodology/approach

IGA makes use of non-uniform rational b-splines to parametrise the domain and approximate the solution spaces. Dealing with the different stator and rotor topologies, the computational domain is split into two non-overlapping parts on which Maxwell’s equations are solved independently and are interconnected by a classical Schwarz domain decomposition scheme. The results are compared with the conventional polynomial finite element method (FEM).

Findings

The new methodology is reliable and efficient. The obtained solutions of the fields are in good agreement with the ones obtained by the FEM approach. IGA offers a better accuracy than FEM.

Originality/value

The application of IGA combined with domain decomposition to the model of an electric machine is a new and original contribution.

Keywords

Citation

Bhat, P., Bontinck, Z., Corno, J., Schöps, S. and DeGersem, H. (2018), "Modelling of a permanent magnet synchronous machine using isogeometric analysis", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 37 No. 5, pp. 1805-1814. https://doi.org/10.1108/COMPEL-01-2018-0014

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Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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