CJEE

Chinese Journal of Electrical Engineering ›› 2021, Vol. 7 ›› Issue (3): 52-64.doi: 10.23919/CJEE.2021.000025

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Analysis and Optimization of a Five-phase Hybrid Excitation Flux Switching Machine Based on the Consistency and Complementarity Principle*

Ming Cheng1,*, Zhiyuan Xu1, Minghao Tong2, Guishu Zhao   

  1. 1. School of Electrical Engineering, Southeast University, Nanjing 210096, China;
    2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    3. School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing 210023, China;
    4. Ansys, Inc., San Jose, CA 95134, USA
  • Received:2021-03-27 Revised:2021-06-24 Accepted:2021-07-08 Online:2021-09-25 Published:2021-09-17
  • Contact: * E-mail: mcheng@seu.edu.cn
  • About author:Ming Cheng received the B.Sc. and M.Sc. degrees from Southeast University, Nanjing, China, in 1982 and 1987, respectively, and the Ph.D. degree from The University of Hong Kong, Pokfulam, Hong Kong, China, in 2001.Since 1987, he has been with Southeast University, where he is currently a Chief Professor with the School of Electrical Engineering and the Director of the Research Center for Wind Power Generation. From January 2011 to April 2011, he was a Visiting Professor with the Wisconsin Electric Machine and Power Electronics Consortium, University of Wisconsin-Madison, Madison, WI, USA. His teaching and research interests include electrical machines, motor drives for electric vehicles, and renewable energy generation. He is the author or co-author of more than 400 technical papers and five books, and he is the holder of 130 patents in his areas of interest. Prof. Cheng is a Fellow of the Institution of Engineering and Technology, UK. He has served as the Chair and an Organizing Committee Member for numerous international conferences. He is a Distinguished Lecturer of the IEEE Industry Applications Society for 2015-2016.
    Zhiyuan Xu received the B.Sc. degree in Electrical Engineering from Southeast University, Nanjing, China, in 2020, where he is currently working toward the M.Sc. degree in the School of Electrical Engineering.His research interests include the design and analysis of novel permanent magnet machines.
    Minghao Tong received the B.Sc., M.Eng., and Ph.D. degrees in Electrical Engineering from Southeast University, Nanjing, China, in 2012, 2015, and 2020, respectively. From January 2018 to January 2019, he was a visiting Ph.D. student with WEMPEC, University of Wisconsin- Madison, Madison, WI, USA. Since 2021, he has been with Nanjing University of Science and Technology, Nanjing, China, where he is currently a Lecturer with the School of Mechanical Engineering. His research interests include the drive and control of permanent magnet machines and integrated battery charge systems in electric vehicles.
    Guishu Zhao received the B.S. degree in Electrical Engineering from the Wuhan University of Technology, Wuhan, China, and the Ph.D. degree in Electrical Engineering from Southeast University, Nanjing, China in 2019, respectively. Since 2019, he has been with Nanjing Normal University, where he is currently a Lecturer with the School of Electrical and Automation Engineering. His current research interests include design and control of stator-excited brushless machines.
    Peng Han received the B.Sc. and Ph.D. degrees in Electrical Engineering from the School of Electrical Engineering, Southeast University, Nanjing, China, in 2012 and 2017, respectively.From November 2014 to November 2015, he was a joint Ph.D. student funded by China Scholarship Council with the Department of Energy Technology, Aalborg University, Aalborg, Denmark, where he focused on the brushless doubly-fed machines for wind energy conversion and high-power drive. He was a Postdoctoral Researcher with the Center for High Performance Power Electronics (CHPPE), Department of Electrical and Computer Engineering, the Ohio State University, and later the SPARK Laboratory, Department of Electrical and Computer Engineering, University of Kentucky. He is currently working at Ansys, Inc. as an Application Engineer. His current research interests include electric machines, power electronics, and renewable energy.
  • Supported by:
    * National Natural Science Foundation of China under Project 51937006.

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Abstract: In this study, the general optimal stator poles/rotor teeth (P/T) combination equation of the E-core hybrid excitation flux switching (HEFS) machines are introduced, and a new HEFS machine is proposed and optimized. Firstly, the influences of three different P/T combinations (10/18, 10/19, and 10/21) on the HEFS machines are investigated with two-dimensional (2D) finite element analyses (2D-FEA). Meanwhile, the consistency and complementarity principle of the armature windings is analyzed in detail to give reasonable explanations to the simulated results. The general optimal P/T combination equation of the E-core HEFS machines is deduced mathematically to provide an effective guidance on the selection of P/T combinations. The optimal P/T combination calculated by the general equation agrees with the simulated results which confirm the correctness of the mathematical inferences. Finally, the optimizations on the proposed HEFS machine are implemented to obtain higher output torque and better flux-regulation ratio characteristics based on which the cogging torque and torque ripple are reduced significantly.

Key words: Consistence and complementarity principle, HEFS machines, stator poles/rotor teeth combination