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(2)?A. Sun, J. Li*, R. Qu, J. Chen and H. Lu, "Rotor design considerations for a variable-flux flux-intensifying interior permanent magnet machine with improved torque quality and reduced magnetization current," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, 2015, pp. 784-790.

(3) H. Lu, J. Li*, R. Qu and S. Jia, "Loss minimization control of vernier reluctance machines with DC field windings in stator,"?IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, Yokohama, 2015, pp. 001885-001890.

(4)?H. Lu, J. Li*, R. Qu, L. Xiao and D. Ye, "Reduction of unbalanced axial magnetic force in post-fault operation of a novel six-phase double-stator axial flux PM machine using model predictrive control," 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, USA, 2016, pp. 1-8.

(5)? D. Liang, J. Li*, R. Qu, P. Zheng and B. Song, "Evaluation of high-speed permanent magnet synchronous machine drive with three-level and two-level inverter," 2015 IEEE International Electric Machines & Drives Conference (IEMDC), Coeur d