Modelling of a Permanent Magnet Synchronous Machine Using Isogeometric Analysis

TL;DR

This paper demonstrates the application of isogeometric analysis (IGA) to simulate a permanent magnet synchronous machine, offering higher accuracy and exact geometry representation compared to traditional finite element methods.

Contribution

The paper introduces the use of IGA with non-uniform rational B-splines for modeling a PMSM, enabling precise geometry and improved solution accuracy over classical FEM.

Findings

IGA achieves higher accuracy than FEM.

Good agreement with classical finite element results.

Effective domain decomposition for stator and rotor analysis.

Abstract

Isogeometric analysis (IGA) is used to simulate a permanent magnet synchronous machine. IGA uses non-uniform rational B-splines to parametrise the domain and to approximate the solution space, thus allowing for the exact description of the geometries even on the coarsest level of mesh refinement. Given the properties of the isogeometric basis functions, this choice guarantees a higher accuracy than the classical finite element method. For dealing with the different stator and rotor topologies, the domain is split into two non-overlapping parts on which Maxwell's equations are solved independently in the context of a classical Dirichlet-to-Neumann domain decomposition scheme. The results show good agreement with the ones obtained by the classical finite element approach.