Detent Force Reduction in Tubular Permanent Magnet Linear Synchronous Machine Using Particle Swarm Optimization

Abstract

Compared to rotary machines, tubular permanent magnet linear synchronous machine (TPMLSM) has many advantages, such as simple construction and excellent dynamic performance. In the current paper, an enhanced particle swarm optimization (PSO) algorithm is utilized to minimize the detent force of TPMLSM. The proposed optimization method can automatically determine the number of particles to reduce the number of particles and promote computational efficiency. Specifically, maintaining the number of particles in the exploration phase and alleviating the number of particles in the exploitation stage, and the stage in exploitation or exploration, are determined by the difference between the gbest’s present and past cost values. The algorithm’s efficiency is evaluated on the six-hump camel back, Goldstein-Price, and 3-D Hartman functions. Then, the TPMLSM is optimized using the improved PSO algorithm, aiming at minimizing the detent force. The calculation results indicate that the value of detent force is reduced 56.3 and 64.8% for positive maximum and negative maximum value, respectively. Finally, a prototype was manufactured according to the optimized dimensions and structure, and an experimental platform was constructed to verify the TPMLSM’s electromagnetic performance. The experimental test verifies the feasibility and design validity of the optimization algorithm.

Keywords:

• tubular permanent magnet linear synchronous machine (TPMLSM)
• detent force
• particle swarm optimization (PSO) algorithm
• finite element method (FEM)
• optimization

Disclosure Statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was supported by Jiaxing Science and Technology Plan Project (2020AD10016).

Notes on contributors

Yuansheng Xiong

Yuansheng Xiong received the M.S. and Ph.D degrees in control science and engineering from the Zhejiang University of Technology, Hangzhou, China, in 2004 and 2010. Since 2012, he has been an Assistant Professor with the College of Mechanical & Electrical Engineering, Jiaxing NanHu University, Jiaxing, China. His research interest includes the power generation and control of new energy, motion control, embedded system.

Chunyuan Liu

Chunyuan Liu received the Ph.D. degree from Southeast University, Nanjing, China, in 2015. Currently, he is an Assistant Professor with the College of Information Science and Engineering (College of Mechanical Engineering), Jiaxing University, China. His current research interests include the design and control of novel electrical machines and drives, renewable energy conversion systems, and applied electromagnetics.