Synchronous Reluctance Motor with fluid shaped barriers: preliminary and optimized design procedures

This paper presents a preliminary sizing procedure for a fluid shaped rotor of a Synchronous Reluctance motor and the design refinement by an optimization step. Starting from the definition of the fluid shaped barrier based on the Joukosky equation and on the analogy between the magnetic and mechanical equations, the preliminary design can be defined. The method uses the same approach of the other rotor shapes accurately changed to match the features of the fluid shaped rotor. This procedure is applied to a case study where the stator core is already defined. After the definition of the preliminary design a further optimization is carried out which involves an optimization algorithm linked to the Finite Element analysis. The preliminary and the optimized designs are then compared and discussed.