Analysis of a Sinusoidal Rotor Segments Axial Flux Interior Permanent Magnet Synchronous Motor with 120-degree Phase Belt Toroidal Windings

Authors

  • Yansong Wang Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Wenbing Zhang Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Rui Nie Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Jikai Si Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Wenping Cao Department of Electrical Engineering and Automation, Anhui University, Hefei 230601, China
  • Yingsheng Li Zhengzhou Runhua Intelligent Equipment Co., Ltd., Zhengzhou 450004, China

DOI:

https://doi.org/10.13052/2022.ACES.J.370416

Keywords:

120-degree phase belt toroidal windings, axial flux permanent magnet (AFPM) motor, magnet grouping, interior motor, sinusoidal rotor segments, torque density

Abstract

Axial flux permanent magnet (AFPM) motors are widely applied in many applications due to their performance advantages. A novel AFPM which owns a special winding form (120-degree phase belt toroidal windings) and a distinct rotor structure (sinusoidal rotor segments) is proposed in this paper to further improve the torque density of this kind of machine. First, the structure and working principle of the 120-degree phase belt toroidal windings sinusoidal rotor segments AFPM interior synchronous motor (120D-TWSRSAFPMISM) are clarified. Then, the design formula and crucial parameters of the motor are presented. Subsequently, the cogging torque is optimized by dividing the magnet grouping. Finally, the characteristics of the 120D-TWSRSAFPMISM are analyzed and compared with those of the traditional toroidal windings sinusoidal rotor segments AFPMISM (T-TWSRSAFPMISM) and another T-TW motor without the sinusoidal rotor segments (T-TWAFPMISM) by finite element method (FEM). The results show that the 120D-TW can significantly increase the back electromotive force (EMF) compared with the T-TW, and the sinusoidal rotor segments can increase the air-gap flux density compared with the traditional interior rotor. Therefore, the 120D-TW and sinusoidal rotor segments are combined in the AFPM motor. This combination can further increase the torque density compared with the contrast motors.

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Author Biographies

Yansong Wang, Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China

Yansong Wang received the B.S. degree in automation from the Harbin University of Science and Technology in 2019. He is currently working toward the M.S. degree with the School of Electrical Engineering of Zhengzhou University, Zhengzhou, Henan.

His research interests include design, analysis, and control of axial-flux permanent magnet motors.

Wenbing Zhang, Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China

Wenbing Zhang (Non-member) majored in computer application from Nanjing Power Higher Specialized School, Nanjing, China, in 1994, and received the B.S. degree in computer science and technology from Zhengzhou University, Zhengzhou, China, in 2000.

His main research interests include numerical simulation and computation.

Rui Nie, Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China

Rui Nie received the B.S. degree in electrical engineering from Henan Polytechnic University, Jiaozuo, China, in 2015, and the Ph.D. degree in electrical engineering from the China University of Mining and Technology, Xuzhou, China, in 2020. She is currently doing post-doctoral research at Zhenzhou University.

Her current research interests include linear motor design and control and renewable energy generation technology.

Jikai Si, Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China

Jikai Si (Member, IEEE) received the Ph.D. degree in 2008 from the School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou, China, in 2008.

He is currently a Distinguished Professor with Zhengzhou University. His main research interests include the theory, application, and control of special motor. He has authored and co-authored over 160 technical papers in these areas. Prof. Si is a Member of the Green Motor System Professional Committee, China.

Wenping Cao, Department of Electrical Engineering and Automation, Anhui University, Hefei 230601, China

Wenping Cao (Senior Member, IEEE) received the B.Eng. degree in electrical engineering from Beijing Jiaotong University, Beijing, China, in 1991, and the Ph.D. degree in electrical machines and drives from the University of Nottingham, Nottingham, U.K., in 2004.

He was a Chair Professor of electrical power engineering and the Head of the Power Electronics, Machines, and Power System Group, Aston University, Birmingham, U.K. He is currently a Distinguished Professor with Anhui University, Hefei, China.

Yingsheng Li, Zhengzhou Runhua Intelligent Equipment Co., Ltd., Zhengzhou 450004, China

Yingsheng Li currently works in Zhengzhou Runhua Intelligent Equipment Co., Ltd, and is the legal representative of Zhengzhou Runhua Intelligent Equipment Co., Ltd. His research interests include the application, control of motor, and power electronics converters and control, and electrical motor drives.

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Published

2022-04-01

How to Cite

[1]
Y. . Wang, W. . Zhang, R. . Nie, J. . Si, W. . Cao, and Y. . Li, “Analysis of a Sinusoidal Rotor Segments Axial Flux Interior Permanent Magnet Synchronous Motor with 120-degree Phase Belt Toroidal Windings”, ACES Journal, vol. 37, no. 04, pp. 507–515, Apr. 2022.

Issue

2022: Vol 37 Iss 4

Section

Articles