回転子に銅溶射を施した半径方向磁束形ヒステリシス電動機

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This paper describes a new form of the radial flux type hysteresis motor having large output, high efficiency, and high power factor. The rotor has the copper sprayed surface layer on the rotor ring, which is made of Fe-Cr-Co magnet steel and has magnetic anisotropy and slits. The new configuration has two features. First, it is designed to give a combined hysteresis and reluctancemotor action effectively, particularly at synchronous speed. Secondly, it is designed to give a combined hysteresis torque and large torque due to eddy current at asynchronous operation, particularly at starting.In order to analyze motor performance at synchronous and asynchronous operations, the finiteelement method is used. In this paper, magnetic hysteresis is considered by using complex permeability. An agreement between predicted and measured values of motor performance characteristics is good.