Attractive type magnetic levitation system with 3φ AC electro-magnets

Author

Chen, Jianzhong ; Tsukamoto, Osami

Author_Institution

Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan

fYear

1991

fDate

28 Oct-1 Nov 1991

Firstpage

778

Abstract

The dynamic characteristics of an attractive-type magnetic levitation system with 3φ AC electromagnets are investigated. The system has iron rails with primary windings on the ground and levitation magnets with secondary windings placed on the levitated object. By detecting the gap between the secondary magnet and rail, the object can be levitated stably by feedback control of the magnetic coupling with primary windings. A dynamic characteristic of the AC levitation system is analyzed, and transfer functions of the system are given. To investigate the validity of the analysis, an experiment has been performed, and experimental results agreed well with analytical results. Stability characteristics of the system are also discussed based on the experimental and analytical results

Keywords

control system analysis; electromagnets; feedback; magnetic levitation; railways; stability; transfer functions; AC electromagnets; air gap; control system analysis; dynamic characteristics; feedback control; magnetic attraction; magnetic coupling; magnetic levitation; rails; stability; three-phase; transfer functions; windings; Couplings; Electromagnets; Feedback control; Iron; Magnetic analysis; Magnetic levitation; Magnets; Object detection; Performance analysis; Rails;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on

Conference_Location

Kobe

Print_ISBN

0-87942-688-8

Type

conf

DOI

10.1109/IECON.1991.239189

Filename

239189