Analytical Modelling of Transverse Flux Motor Using Magnetic Equivalent Circuit and 3D FEM Analysis

Abstract

This thesis presents the design one unique single phase transverse flux machines (TFM) with one rotor disk. The necessity to use three dimensional finite element analysis (FEA) justified by analyzing a U-core, which is a fundamental element of the magnetic circuit in the TFM. The analysis is performed under different conditions with different methods viz. MEC analytical method and 3D FEA. Analytical models for the modular TFM are derived in order to calculate the fluxes in the core created by magnets and the current in the stator winding, in terms of its geometrical parameters. The calculated fluxes are used to calculate the torque of the machine. The accuracy of the analytical models are evaluated by comparing the results with that obtained from 3D FEA for different loading conditions. The analytical models are then used to obtain some optimized geometrical configurations by assigning a range of to each geometrical parameter. By applying design constraints such as a low utilization of the magnetic cores and current densities than 5 A/mm2 in the conductors, some of the geometrical configurations can be eliminated.