1. Zhu X Y, Cheng M. Design, analysis and control of hybrid excited doubly salient stator-permanent-magnet motor. Sci China Tech Sci, 2010, 53: 188–199
2. Cheng M, Zhou E. Analysis and control of novel split-winding doubly salient permanent magnet motor for adjustable speed drive. Sci China Tech Sci, 2001, 44: 353–364
3. Rauch S E, Johnson L J. Design principles of flux-switching alternators. AIEE T, 1955, 74: 1261–1268
4. Hoang E, Ben-Ahmed A H, Lucidarme J. Switching flux permanent magnet polyphased synchronous machines. In: Proc. 7th Europe Conf. Power Electron and Appl, Aalborg: IEEE Power Electronics Society, 1997
5. Cheng M, Zhang G, Hua W. Overview of stator permanent magnet brushless machine systems and their key technologies (in Chinese). P CSEE, 2014, 34: 5204–5220