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Accurate Modeling and Performance Analysis of IPM-PMASR Motors

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5 Author(s)
Armando, E. ; Dept. of Electr. Eng., Politec. di Torino, Turin ; Guglielmi, P. ; Pellegrino, G. ; Pastorelli, M.
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Modern interior permanent magnet motors, suited to large constant-power speed ranges, have a multiple flux-barrier rotor structure and show a quite complex magnetic behavior. In this paper, the flux-current relationship of such motors is analyzed, and a simplified but effective model of the cross-saturation phenomenon is proposed and verified by experiment. In addition, new flux variables are introduced that allow a rigorous splitting of permanent-magnet (PM) and reluctance torques. It is shown that the PM contribution to torque is larger than expected from the PM no-load flux. This can lead to more accurate machine design and control strategies.

Published in:

Industry Applications, IEEE Transactions on  (Volume:45 ,  Issue: 1 )

Date of Publication:

Jan.-feb. 2009

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