How do you optimize the electromagnetic design of an EV traction motor?

Motor electromagnetic optimization involves: Selecting pole-slot combinations minimizing cogging and torque ripple, optimizing magnet geometry (pole arc, V-shape, Halbach arrays for PM motors), rotor/stator lamination design minimizing iron losses, winding configuration (distributed vs concentrated), air gap optimization balancing torque production and manufacturing tolerances, loss mapping across operating envelope, and demagnetization analysis for high-temperature operation. Tools include FEA (Ansys Maxwell, JMAG, Motor-CAD) for field analysis coupled with thermal and mechanical models. Optimization considers tradeoffs between efficiency, power density, cost, and manufacturability.