Abstract
Several researchers have recently focused on core loss reduction of the motor based on core with nanocrystalline magnetic materials (NMM) [1], [2], which offer low iron losses [3]. Previous studies have shown permanent magnet synchronous motors (PMSM) by use of “only stator core” made of NMM have low core losses [1], [2]. Here, in order to realize low loss motor system, it is necessarily to understand core loss properties of “both stator and rotor cores” with NMM. However, there has been no report on the motor by use of “both NMM stator and rotor cores”. In this study, the core losses of PMSM with the NMM stator and rotor cores under pulse-width-modulation (PWM) inverter excitation are evaluated based on both experiments and numerical simulations. The comparison with PMSM made of conventional non-oriented (NO) steels is also performed. In addition, we discuss the core loss repartition by using numerical simulations.
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