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Interior Permanent-Magnet Synchronous Motor Design for Improving Self-Sensing Performance at Very Low Speed

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6 Author(s)
Shanshan Wu ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Reigosa, D.D. ; Shibukawa, Y. ; Leetmaa, M.A.
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The focus of this paper is to improve the self-sensing performance of an interior permanent-magnet synchronous machine (IPMSM) by modifying the rotor configurations. A field-intensified IPMSM (FIIPMSM) is designed by adding flux barriers in the rotor of an IPMSM. In comparison with IPMSMs, FIIPMSMs have the advantage of decoupling saturation-induced saliency, cross-coupling effects, and also secondary saliencies, which reduce the estimation accuracy of self-sensing control for IPMSMs. A finite element analysis is used to design the FIIPMSM and assess the performance of the machine for self-sensing. The self-sensing capabilities of IPMSMs and FIIPMSMs are presented and compared. The results demonstrate the improved self-sensing performance of the new field-intensified machine.

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Industry Applications, IEEE Transactions on  (Volume:45 ,  Issue: 6 )