Topology optimization of asymmetric Interior permanent magnet motors using Gaussian basis function

Abstract

Novel rotor structures of an asymmetric interior permanent magnet (IPM) motor are realized by using the topology optimization (TO) in this study. The TO method to be presented in this article takes into account both the configuration of the magnet and the geometry of the magnetic core. In the optimization, the shape of the magnetic core is determined by a linear combination of the Gaussian basis functions, whereas the magnet configuration is determined by a Boolean geometry projection for its manufacturability. It is shown that the optimized asymmetric IPM motor exhibits better torque performance compared to the conventional TO which considers only the magnetic core.