[l] A. Hosseinpour, M. Mardaneh and A. Rahideh "Investigation of the Effects of Different Magnetization Patterns on the Performance of Series Hybrid Excitation Synchronous Machines" Progress In Electromagnetics Research M, Vol. 64, 109- 121 , 2018.
 Y. Amara, S. Hlioui, Rachid Beltkira, G. Barakat and M. Gabsi "Comparison of open circuit flux control capability of a series double excitation machine and a parallel double excitation machine" IEEE Trans. Yeh. Technol., vol. 60, no. 9, Nov 2011.
 Y. Wang and Z. Deng "Hybrid excitation topologies and control strategies of stator permanent magnet machines for DC power system" IEEE Trans. Ind. Elec., vol. 59, no. 12, 2012.
 W. Geng, Z. Zhang, K. Jiang and Yangguang Yan, "A new parallel hybrid excita- tion machine: permanent-magnet/variable-reluctance machine with bidirectional field-regulating capability" IEEE Trans. Ind. Elec., vol. 62, no. 3, Mar. 2015.
 K. Kamiev, J. Pyrh¨onen, J. Nerg,V. Zaboin and J. Tapia "Modeling and testing of an armature-reaction-compensated (PM) synchronous generator" IEEE Trans. Energy Convers., vol. 28, no. 4, Dec. 2013.
 X. Zhu, M. Cheng, W. Hua, J. Zhang, and W. Zhao, "Design and analysis of a new hybrid excited doubly salient machine capable of field control," in Conf. Rec. IEEE IAS Annu. Meeting, Tampa, FL, USA, 2006, vol. 5,pp. 2382–2389.
 W. Hua, M. Cheng, and G. Zhang, "A novel hybrid excitation flux switching motor for hybrid vehicles," IEEE Trans. Magn., vol. 45, no. 10,pp. 4728–4731, Oct. 2009.
 R. L. Owen, Z. Q. Zhu, and G. W. Jewell, "Hybrid-excited flux-switching permanent-magnet machines with iron flux bridges," IEEE Trans. Magn., vol. 46, no. 6, pp. 1726–1729, Jun. 2010.
 Z. Zhang, S. Ma, J. Dai and Y. Yan "Investigation of Hybrid Excitation Syn- chronous Machines With Axial Auxiliary Air-Gaps and Non-Uniform Air-Gaps" IEEE Trans. Ind Appl., vol. 50, no. 3, May/Jun. 2014.
 L. Xiaogang and T. A. Lipo, "A synchronous/permanent magnet hybrid AC ma- chine," IEEE Trans. Energy Convers., vol. 15, no. 2, pp. 203–210, Jun. 2000
 A. Hosseinpour, M. Mardaneh and A. Rahideh "Two-dimensional analytical model for double field excitation synchronous machines" IET Generation, Trans- mission & Distribution , Vol. 15, Is. 6, pp. 1081-1093, 2021.
 S. I. Kim, J. Cho, S. Park, T. Park and S. Lim "Characteristics comparison of a conventional and modified spoke-type ferrite magnet motor for traction drives of low-speed electric vehicles " IEEE Trans. on Ind. Appl., vol. 49, no. 6, pp. 2516-2523, 2013.
 K. Kamiev, J. Nerg, J. Pyrhönen, V. Zaboin, and J. Tapia "Feasibility of an armature-reaction-compensated permanent-magnet synchronous generator in is- land operation" IEEE Trans. Ind. Elec., vol. 61, no. 9, Sep. 2014.
 H. Bali, Y. Amara, G. Barakat, R. Ibtiouen and M. Gabsi "Analytical modeling of open circuit magnetic field in wound field and series double excitation syn- chronous machines" IEEE Trans. Magn., vol. 46, no. 10, Oct. 2010.
 A. Hosseinpour and A. Khaje " Determine Optimal Value of Pole Arc to Pole Pitch Ratio in order to Increasing Average Torque and Decreasing Unbalance Magnetic Force in Hybrid Electrical Vehicle " International Journal of Industrial Electronics, Control and Optimization, Vol.4 , Issue. 4, 2021.