Electromagnetic Vibration Analysis of Transverse Flux Permanent Magnet Linear Submersible Motor for Oil Production

Mei Zhao, Yihao Li, Sicheng Zuo, Pingpeng Tang (), Tong Yao, Huaqiang Zhang and Shunjie Wu
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Mei Zhao: College of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, China
Yihao Li: College of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, China
Sicheng Zuo: College of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, China
Pingpeng Tang: School of Ocean Engineering, Harbin Institute of Technology (Weihai), Weihai 264209, China
Tong Yao: College of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, China
Huaqiang Zhang: College of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, China
Shunjie Wu: Testing Technique Research Institute, Yichang 443000, China

Energies, 2023, vol. 16, issue 23, 1-18

Abstract: A transverse flux linear motor is a special type of linear motor with a high thrust force density, and it has broad application prospects in the field of linear direct-drive systems. In the process of oil production, the vibration of the linear motor poses a significant amount of harm to the system due to its special slender structure. This paper focuses on the electromagnetic vibration of a transverse flux permanent magnet linear submersible motor (TFPMLSM). Firstly, the no-load air gap flux density is calculated based on the field modulation principle. Secondly, the radial electromagnetic force (REF) of the TFPMLSM is calculated, and the finite element method (FEM) is used to analyze the time-space and spectral characteristics of the REF. Then, the influence of secondary eccentricity on the frequency spectrum of the REF is further concluded. Finally, the natural frequencies of each vibration mode are calculated using the modal superposition method and the influence of the REF on the motor vibration is obtained through magnetic-structural coupling analysis. The research results found that the motor does not cause resonance at low speeds, and the fundamental frequency of REF has the greatest impact on electromagnetic vibration.

Keywords: transverse flux permanent magnet linear motor; radial electromagnetic force; finite element method; modal superposition method; electromagnetic vibration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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