A modelling methodology is proposed to study PM synchronous motor for electric drives. A non-linear model is presented to take saturation effects into account. FEM accuracy is combined .to analytical modelling to quicker reach motor performances whatever operating point. A new FEM magnetic 10ss estimation is exploited to obtain efficiency maps (Copper and core 10ss). Influence of active length shortening is stridied. Surface PM shape modification reduces high speed core . loss. Inset and Interior PM motors are compared. Driving cycle consumption of Interior PM motor is improved by an airgap induction shape modification. Another analytical model is dedicated to conception. It uses a reluctance network. Constrained optimisation ofPM motors is then performed to reach cost and volume reduction.
