Title :
Study on a long primary flux-switching permanent magnet linear motor for electromagnetic launch systems
Author :
Huang, Lei ; Yu, Haitao ; Hu, Minqiang ; Liu, Hexiang
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
Based on the principle of rotational flux-switching permanent magnet machines, a novel double-sides long primary flux-switching permanent magnet linear motor is proposed for electromagnetic launch systems. Compared with traditional induction and synchronous linear machines used in EMLS, the proposed is more suitable for EMLS because of high thrust density and simple structure of the secondary. Firstly, the structure and operation principle of the proposed FSPMLM are given and analyzed. Secondly, considering the end effect, the every thrust components are analyzed and derived, and the optimal method are obtained. Two-dimensional (2-D) finite element method (FEM) is used to investigate the dynamic electromagnetic characteristics of the FSPMLM and the process of electromagnetic launch. In addition, a single-side FSPMLM is employed to validate the thrust performance of proposed machine.
Keywords :
electromagnetic launchers; finite element analysis; linear motors; permanent magnet motors; 2D FEM; EMLS; double-side long primary flux-switching permanent magnet linear motor; dynamic electromagnetic characteristics; electromagnetic launch systems; induction linear machines; long primary flux-switching permanent magnet linear motor; rotational flux-switching permanent magnet machines; single-side FSPMLM; synchronous linear machines; thrust density; two-dimensional finite element method; Circuit faults; Coils; Electromagnetics; Finite element methods; Force; Permanent magnets; Stators; Thrust force; electromagnetic launch; finite element method; flux-switching; linear motor;
Conference_Titel :
Electromagnetic Launch Technology (EML), 2012 16th International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-0306-4
DOI :
10.1109/EML.2012.6325030
