Karim Abbaszadeh - K.N. Toosi University of Technology
Seyede Sara Maroufian - K.N. Toosi University of Technology

Several methods are introduced for precise modeling of electrical machines. Model accuracy and speed are the great concerns. Magnetic Equivalent Circuit Modeling of the ElectricalMachines is one of the proposed methods and has been used for modeling the healthy case and a faulty condition example of anAxial Flux Permanent Magnet Motor in this paper. The faulty condition which has been modeled is the Demagnetization of the rotor PMs. The motor structure and feature are introduced, and then further analysis of Teeth Flux, Phase Flux and Back-EMFVoltage are proposed with according to magnetic circuit model. Detection of magnets demagnetization is established by Fourier analysis of the Back-EMF voltage induced in the Stator Windings of the proposed motor. The model then has been validated with the help of the experimental results

Axial Flux Permanent Magnet Motor, Magnetic Equivalent Circuit, PM Demagnetization