3D edge element analysis of saturation effects in a permanent magnet machine

Abstract

The paper presents a method for the 3D edge element analysis of saturation effects in the classical rotating electrical machines of cylindrical structure. The edge element (EE) method using vector magnetic potential has been applied. Special attention is paid to the saturation effects in permanent magnet motors. In order to solve the non‐linear EE equations the authors propose to apply the modified Newton algorithm with block relaxation solver and Cholesky decomposition procedure for block matrices. The convergence of the algorithm is analysed. The influence of core non‐linearity on the values of electromagnetic torque and armature inductances is considered. The results for 3D and 2D models are compared.

Citation

Demenko, A., Nowak, L., Pietrowski, W. and Stachowiak, D. (2002), "3D edge element analysis of saturation effects in a permanent magnet machine", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 21 No. 1, pp. 126-137. https://doi.org/10.1108/03321640210410797