Conformal Mapping technique for magnetic saliency analysis of Double-layer Interior Permanent Magnet Motor

In this paper, an analytical method based on conformal mapping technique is applied to the rotor design of interior permanent magnet synchronous motor (IPMSM). A single layer IPMSM is developed to a double-layer IPMSM to improve saliency ratio with design of experiment (DOE) and response surface methodology (RSM). The increased reluctance torque of the double-layer IPMSM is verified by finite element analysis (FEA). With this analytical method, the estimation of saliency effect related to reluctance torque can be achieved by simple calculation of equations. Therefore, time and effort in the initial design of the model having complex geometry can be saved