Topology Optimization of Flux Switching Machine Rotors

This paper investigates the topology optimization of the rotor of a 3-phase flux switching machine with 12 permanent magnets located within the stator. The objective is to find the steel distribution within the rotor, maximizing the average torque for a given stator, permanent magnets, and electrical currents. The optimization algorithm relies on a density method based on gradient descent. The adjoint variable method is used to compute the sensitivities efficiently. Since the rotor topology depends on the current feedings, this approach is tested on several electrical periods. The obtained structures are then analyzed and classified.