A new viewpoint of end effect of linear induction motor from secondary side in ladder type model
In Japan, the subway trains driven by linear induction motors (LIMs) have been used in metropolitans of Tokyo and Osaka. As a new viewpoint, the physical phenomenon of end effect in ladder type linear induction motor (LIM) is observed from secondary side by making use of the structural feature. The phenomena in the ladder type and the sheet type LIM are the same fundamentally. The analytical method for the study is the special two-dimensional electromagnetic analysis, in which the current in each conducting bar is determined considering with time harmonics of secondary current. A new factor t{sub p}/t{sub s} is proposed to present the degree of end effect, in where t{sub p} is the passing duration of primary core at a secondary point and t{sub s} the half-period of slip frequency. The factor will be useful for the design grasping the essential of end effect of LIM.
- Research Organization:
- Kyushu Univ., Fukuoka (JP)
- OSTI ID:
- 20000836
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Vol. 35, Issue 5Pt2; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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