A Complete Equivalent Circuit Model for Linear Induction Motor Considering Thrust, Vertical and Transversal Forces

Zeng, Dihui; Lv, Gang; Zhou, Tong; Degano, Michele

Abstract

Since the linear induction motors working with a laterally asymmetric secondary is very common, this paper develops a complete equivalent circuit model considering the asymmetry to predict thrust, vertical and transversal forces. First, this paper proposes an improved equivalent circuit, which is able to consider the single sided linear induction motor (SLIM) operating condition with a laterally asymmetric secondary and an exponential correction factor, which is used to describe the decay due to the asymmetry. Then the correction factors to the circuit components, i.e. extra magnetizing branch, primary leakage inductance and magnetizing current are presented. Four coefficients to calculate the traction characteristic of a LIMs are then computed: attractive and repulsive force coefficient for vertical and lateral forces, respectively. Also, the thrust, vertical and transversal forces are calculated by the corrected equivalent circuit in a range of rated speed is presented. Finally, these calculated results are verified by measurements carried out on a linear motor test rig.

Citation

Zeng, D., Lv, G., Zhou, T., & Degano, M. (2019, May). A Complete Equivalent Circuit Model for Linear Induction Motor Considering Thrust, Vertical and Transversal Forces. Presented at 2019 IEEE International Electric Machines & Drives Conference (IEMDC), San Diego, CA, USA

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2019 IEEE International Electric Machines & Drives Conference (IEMDC)
• Start Date: May 12, 2019
• End Date: May 15, 2019
• Online Publication Date: Aug 5, 2019
• Publication Date: 2019-05
• Deposit Date: Jun 24, 2024
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Pages: 1766-1771
• ISBN: 9781538693490
• DOI: https://doi.org/10.1109/IEMDC.2019.8785311
• Public URL: https://nottingham-repository.worktribe.com/output/35446695
• Publisher URL: https://ieeexplore.ieee.org/document/8785311