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Performance of PM-assisted synchronous reluctance motor for high-efficiency and wide constant-power operation

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3 Author(s)
Morimoto, S. ; Dept. of Electr. & Electron. Eng., Osaka Prefecture Univ., Japan ; Sanada, M. ; Takeda, Y.

This paper examines the design and the performances of a permanent-magnet assisted synchronous reluctance motor (PMASRM) for wide constant-power operation. The effects of properly adding magnets into the rotor of a synchronous reluctance motor are examined by several experimental results and analyses on the prototype machines. The proposed machine can offer a large constant-power speed range, high-efficiency and high-power-factor operation in comparison to the complete synchronous reluctance motor. It was shown that the problems such as the decrease of efficiency at light-loads and the uncontrolled generator mode operation, which occur in the high-speed flux-weakening operation of the conventional PM motor drives, can be eliminated in the PM-assisted synchronous reluctance motor

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Industry Applications, IEEE Transactions on  (Volume:37 ,  Issue: 5 )