A Simple Design Method for Surface-mounted PM Machines for Traction Application

Surface-mounted permanent magnet motors with concentrated windings (CW-SPM) can have a wide constant power speed range if properly designed. This study introduces a design approach for CW-SPM machines for traction application, presenting the new parametric design plane x, b, where x accounts for the rotor on stator radius split and b summarizes the share between copper and iron in the stator. The proposed design method aims at covering the important area of design of PMSMs with flux weakening capability, with a simple methodology. Analytical and finite-element (FEA) models are used jointly. The design flowchart is illustrated and the output designs are validated by FEA. All presented results are obtained through open-source design resources available online.