Investigation of parametrized curves for the pole shaping in an E-core Flux-Switching Machine with large air-gap

A detailed investigation of different pole shapes of a flux switching machine with a large air-gap (δ = 3 mm) compared to the machines outer diameter (D_sa = 100 mm) is conducted by means of 2D finite element analysis. The rotor pole shape as well as the stator core is modelled using parametrized spline curves to improve the electromagnetic performance of the FSPM machine. During the design process, the main governing parameters of the machine are kept constant except the number of turns per phase which is adapted to the actual slot area. Additionally, an alternative optimization method is implemented using a combination of several parts of wellknown optimization algorithms and chaotic parameter generation. It is shown, that the proposed method is capable to increase the torque of the machine by more than 12 % which is in general not an easy task for this small machine.