Sectional Modular Technology for Reducing Detent Force of Linear Unit in Linear-rotary Flux-switching Permanent-magnet Generator for Wind-wave Combined Energy Conversion

Authors

  • Guozhen Zhang School of Electrical and Information Engineering Zhengzhou University, Zhengzhou, 450001, China
  • Rui Nie School of Electrical and Information Engineering Zhengzhou University, Zhengzhou, 450001, China
  • Jikai Si School of Electrical and Information Engineering Zhengzhou University, Zhengzhou, 450001, China
  • Xiaohui Feng School of Mechanical and Electrical Engineering North China Institute of Science and Technology, Beijing, 101601, China
  • Changli Wang School of Computer Science North China Institute of Science and Technology, Beijing, 065201, China

DOI:

https://doi.org/10.13052/2023.ACES.J.380408

Keywords:

detent force, flux-switching, sectional modular technology, tubular permanent-magnet linear generator

Abstract

A linear-rotary flux-switching permanent magnet (FSPM) generator (LRFSPMG) is a potential candidate for a wind-wave combined energy conversion (WWCEC) system. The linear unit of the LRFSPMG is a tubular FSPM linear generator (TFSPMLG), which like other permanent magnet linear generators, has an inherent detent force problem. To alleviate this problem, a sectional modular technology scheme is investigated to reduce the detent force of the TFSPMLG. Firstly, the structure is briefly introduced and the detent force analyzed. Secondly, the sectional modular TFSPMLGs are presented and their feasibility verified with respect to the stator of the TFSPMLG being split into two and three sections, forming Modulars I and II, respectively. After that, the detent force suppression principle, and the effects that the sectional modular structures exert on the detent force are analyzed. According to the analysis results, two methods are presented to suppress the detent force: one is to suppress the magnetic coupling effect; the other is to reduce the remaining harmonics. Finally, the three TFSPMLGs, including the initial TFSPMLG, Modular I, and Modular II, are comparatively analyzed by finite-element analysis (FEA). The results show that both the detent forces are greatly reduced without sacrificing the back electromotive force (EMF) and average electromagnetic force, thereby proving the effectiveness of the TFSPMLG with a sectional modular structure.

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Author Biographies

Guozhen Zhang, School of Electrical and Information Engineering Zhengzhou University, Zhengzhou, 450001, China

Guozhen Zhang was born in Anhui province, China, in 1996. He received the B.S. degree in Electrical Engineering from the Henan University of Technology in 2020. He is currently working toward the M.S. degree in Electrical Engineering with the School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou, China. His current research interests include the design and optimization of two-degree-of-freedom machines and linear machines.

Rui Nie, School of Electrical and Information 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 an assistant research fellow at Zhengzhou University. Her current research interests include two-degree-of-freedom machines, linear motor design and control, and renewable energy generation technology.

Jikai Si, School of Electrical and Information Engineering Zhengzhou University, Zhengzhou, 450001, China

Jikai Si received the B.S. degree in Electrical Engineering and Automation from the Jiaozuo Institute of Technology, Jiaozuo, China, in 1998; the M.S. degree in electrical engineering from Henan Polytechnic University, Jiaozuo, China, in 2005; and the Ph.D. degree in Power Electronics and Power Drives 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 the School of Electrical and Information Engineering, Zhengzhou University. He has authored and co-authored more than 160 technical papers in these areas. His main research interests include the theory, application, and control of the special motor. Dr. Si is a Member of the Green Motor System Professional Committee, China.

Xiaohui Feng, School of Mechanical and Electrical Engineering North China Institute of Science and Technology, Beijing, 101601, China

Xiaohui Feng received the B.S. degree in Electrical Engineering and automation from the Jiaozuo Institute of Technology, Jiaozuo, China, in 1998, and the M.S. degree in Electrical Engineering from Henan Polytechnic University, Jiaozuo, China, in 2004. She is currently an associate Professor with the School of Electrical Engineering, North China Institute of Science and Technology. Her main research interests include linear motor design and control, control theory, and control engineering.

Changli Wang, School of Computer Science North China Institute of Science and Technology, Beijing, 065201, China

Changli Wang received the M.S. degree in Software Engineering from the University of Electronic Science and Technology of China, Chengdu, China, in 2009. He is currently a senior engineer with the School of Computer Science, North China Institute of Science and Technology. His main research interests include software engineering.

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Published

2023-04-30

How to Cite

[1]
G. . Zhang, R. . Nie, J. Si, X. . Feng, and C. . Wang, “Sectional Modular Technology for Reducing Detent Force of Linear Unit in Linear-rotary Flux-switching Permanent-magnet Generator for Wind-wave Combined Energy Conversion”, ACES Journal, vol. 38, no. 04, pp. 286–296, Apr. 2023.

Issue

2023: Vol 38 Iss 4

Section

General Submission

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