In the last few decades, the synchronous reluctance motor (SynchRel) has been relatively neglected in industrial, domestic and traction application because of the ascendency of permanent magnet (PM) and the ubiquitous induction (IM) motor. Recent vitality in rare earth PM prices and the unavoidable losses in IM’s have renewed interest in SynchRels – especially for traction. Advantages include no PM’s, no windings on the rotor and compatibility with standard inverters. However, multiphysics electromagnetic and mechanical design is crucial to obtaining best performance and structural strength.
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