Modeling demagnetization effects in permanent magnet synchronous machines

This paper presents a permanent magnet model which takes temperature dependencies and demagnetization effects into account. The proposed model is integrated into a magnetic fundamental wave machine model using the modeling language Modelica. For different rotor types permanent magnet models are developed. The simulation results of the Modelica are compared with measurement results. Additionally, the fundamental wave model is compared to a finite element analysis in order to assess the applicability of the proposed model.