Semi-Analytical Method Based on Magnetic Equivalent Circuit for Synchronous Permanent-Magnet Machines in EV and HEV Applications

摘要

Concentrated Winding Permanent-Magnet (PM) Synchronous Machines (CWPMSM) are more and more used to drive electromechanical systems working in variable speed mode, such as Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) applications. In order to design and optimize these machines, the authors propose a semi-analytical method based on magnetic equivalent circuit (MEC). The studied structure, 12-slots/8-poles CWPMSM, is an internal rotor topology with surface mounted PMs having radial magnetization. We compare the results obtained with finite-element analysis (FEA) with those given by the MEC. In this paper both precision and time computation are evaluated in order to analyse the possible implementation of the model in an optimal design tool.