Experimental characteristic of the machine utilizes high permeability magnet

This paper shows permanent magnet synchronous motors with characteristics of bonded magnet. In general, most of PMSMs use the Nd-Fe-B sintered magnet. Although a magnetic energy of the bonded magnet is lower than of the Nd-Fe-B sintered magnet, a new Nd bonded magnet has higher permeability than the Nd-Fe-B sintered magnet and an eddy current is negligible. It is found that the flux weakening control is useful because of the high permeability. This paper shows experimental results which are presented to verify the availability of the bonded magnet machine.