4724 IEEE TRANSACTIONS ON MAGNETICS, VOL. 45, NO. 10, OCTOBER 2009 A High-Performance Line-Start Permanent Magnet Synchronous Motor Amended From a Small Industrial Three-Phase Induction Motor W. Fei1 ;2 , P. C. K. Luk 1 , J. Ma2 , J. X. Shen2, and G. Yang2 Department of Engineering Systems and Management, Cran?eld University, Shrivenham, Wiltshire SN6 8LA, U.K. College of Electrical Engineering, Z