Analysis of electromagnetic forces in a levitated short rotor LIM. I. Finite length and finite width effects

Author

Venkataratnam, K. ; Chattopadhyay, A.B.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kharagpur, India

Volume

17

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

95

Lastpage

101

Abstract

The paper proposes a partly analytical and partly numerical method for evaluating the propulsion, levitation and lateral destabilizing forces in a levitated short rotor linear induction motor (LIM) considering the finite width of the stator and finite width and length of the rotor. The calculated forces at unity slip are compared with experimental results on a laboratory size model built for this purpose. Constructional details of the levitated LIM (LLIM) are also given. Method of lateral stabilization and its analysis are considered in Part II of the paper

Keywords

electromagnetic forces; integro-differential equations; linear induction motors; machine theory; magnetic levitation; rotors; slip (asynchronous machines); stators; electromagnetic forces; lateral destabilizing forces; levitated short rotor LIM; levitation forces; linear induction motor; numerical analysis; propulsion forces; rotor; stator; unity slip; Electromagnetic analysis; Electromagnetic forces; Induction motors; Iron; Laboratories; Levitation; Propulsion; Rotors; Stators; Vehicles;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.986444

Filename

986444