Analytical Modeling of a Segmented-Pole Synchronous Reluctance Machine with CRGO Laminations

This paper proposes a modified version of an analytical model used for the analysis, design, and characterization of a segmented-pole synchronous reluctance machine made of grain-oriented steel laminations. The feasibility of grain-oriented steel laminations to improve the saliency ratio of synchronous reluctance machines is initially discussed. The magnetic features of the grain-oriented steel laminations are compared with the characteristics of non-grain-oriented steel laminations. Based on that a mathematical approach to include the superior magnetic properties of the steel in the analytical model of the synchronous reluctance machine is presented. The proposed model is validated through FEA and experiments. It is observed that for a full utilization of the superior magnetic features of the grain-oriented steel, saturation of the rotor core must be avoided.

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