Comparative Study on Improved and Traditional Equivalent Circuit of Long Primary Double-Sided Linear Induction Motor

Authors

  • Qian Zhang School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Hui-juan Liu School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Zhen-yang Zhang School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Teng-fei Song School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Yu Wang School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

DOI:

https://doi.org/10.13052/2021.ACES.J.361115

Keywords:

Double sided linear induction motor, end effect, equivalent circuit, long primary, skin effect

Abstract

Based on the quasi-two-dimensional (2D) field model of long primary double-sided linear induction motor (LPDLIM), an improved equivalent circuit model is proposed. First, the traditional equivalent circuit of LPDLIM is reviewed. Second, the skin effect correction coefficients for the secondary equivalent resistance and excitation reactance, and the secondary leakage inductance are derived. Moreover, an improved equivalent circuit model for LPDLIMs is presented, in which the leakage reactance of the secondary is considered, and the excitation reactance and secondary resistance are modified by the correction coefficients independently. Then, the slip frequency characteristics of various effect forces and variations of forces under different operations and mechanical air gap width are presented. Finally, the calculated forces by the proposed equivalent circuit are validated by the finite element method results and also compared with that of the traditional equivalent circuit model.

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Author Biographies

Qian Zhang, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Qian Zhang was born in China. He is currently working toward the Ph.D. degree in electrical engineering with Beijing Jiaotong University, Beijing, China. His research interests include the optimal design and analysis of novel permanent-magnet motors, linear induction machines, and hardware design of motor drive.

Hui-juan Liu, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Hui-juan Liu was born in China. She received the Ph.D. degree in electrical engineering from Beijing Jiaotong University, Beijing, China, in 2009 and received the B.S. and M.S. degrees from Tianjin University, Tianjin, China, in 1989 and 1994, respectively. She worked as a Visiting Scholar with the Laboratory for Power Electronics & Electrical Machines, The Ohio State University, Columbus, OH, USA, in 2008. In 2011 and 2013, she worked as a Research Fellow with The Hong Kong Polytechnic University, Hong Kong. Since December 2015, she has been a Professor with Beijing Jiaotong University. Her current research interests mainly focus on numerical methods of electromagnetic field computation, optimal design and control of high-performance electrical machines and novel electrical motors, such as induction machine, doubly fed brushless machine, and permanent magnetic machine for wind power, and other new power source development.

Zhen-yang Zhang, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Zhen-yang Zhang was born in Henan Province, China. He is currently working toward the Ph.D. degree with the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. His research interests include the analysis and optimal design of new structure electrical machines, the electromagnetic filed analysis and simulation of linear induction motor, and the performance prediction of annular linear induction pump.

Teng-fei Song, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Teng-fei Song received the M.S. degree from the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China, in 2017. His research interest includes the analysis and optimal design of new structure electrical machines, such as Vernier-machine, and dflux-modulated motor for direct-drive applications.

Yu Wang, School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Yu Wang was born in Henan Province, China. He is currently working toward the M.S. degree with the School of Electrical Engineering, Beijing Jiaotong University, Beijing, China. His research interests include the analysis and optimal design of linear induction motors.

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Published

2021-12-30

How to Cite

[1]
Q. . Zhang, H.- juan . Liu, Z.- yang . Zhang, T.- fei . Song, and Y. . Wang, “Comparative Study on Improved and Traditional Equivalent Circuit of Long Primary Double-Sided Linear Induction Motor”, ACES Journal, vol. 36, no. 11, pp. 1499–1508, Dec. 2021.

Issue

2021: Vol 36 Iss 11

Section

Articles