Simulation and optimization of six-stage electromagnetic coilgun

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Guo, Liuming^{a; b} | Wang, Shuhong^{a; *} | Guo, Ningning^a | Qiu, Jie^a | Zhu, Jian Guo^c | Guo, Youguang^c | Wang, Yi^c | Xu, Wei^c

Affiliations: [a] Faculty of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China | [b] Environmental Protection Dept, Northwest Electric Power Design Institute (NWEPDI), Xi'an 710075, P.R. China | [c] School of Electrical, Mechanical and Mechatronic Systems, University of Technology, Sydney, NSW 2007, Australia

Correspondence: [*] Corresponding author. Tel.: +86 29 82668630 213; E-mail: shwang@mail.xjtu.edu.cn

Abstract: This paper presents a method based on Current Hoop Model for the analysis and design of induction coilgun. The cylindrically symmetric armature is subdivided into concentric hoops with diverse rectangular cross-sections, in each of which the current is assumed to be uniformly distributed. An equivalent analytical model considering mutual coupling of coils and armature hoops is constructed for dynamic simulation of the coilgun. Based on this model, the self- and mutual-inductances of exciting winding and hoops are calculated by Neumann method. The circuit equations are solved coupled with the equation of motion of projectile by using the Treanor method to ensure the convergence. Comparison between the experimental results and the numerical results simulated by Finite Element method (FEM) shows the validity of the presented simulation method for coilgun. The optimization of a six-stage coilgun is achieved by employing the genetic algorithm (GA).

Keywords: Electromagnetic coilgun, equivalent analytical model, genetic algorithm

DOI: 10.3233/JAE-2010-1146

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 465-471, 2010