Problems of FEM analysis of magnetic circuit

Abstract

This paper compares four different approaches to modeling of magnetic circuit in the ANSYS software. The approaches differ in various inputs of magnetic field source and varying levels of axial symmetry. The accuracy and the solution time were the main evaluation criteria. The analysis was performed on a simple magnetic circuit. The analysis results were compared with measurements on experimental device that was made for this purpose. The results show that planar solution in ANSYS Classic is the fastest and the highly accurate approach. The problem solution such as 3D axisymmetric task with the definition of magnetic field source with the stranded type is the most accurate, but more time-consuming. © Springer International Publishing Switzerland 2014.