Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2008.11b
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- Pages.310-315
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- 2008
A Study on an Operation Mode of a Rotary-type Small-scaled LIM for Railway Transit
철도차량용 회전형 축소모델 선형유도전동기의 운전모드 연구
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Park, Chan-Bae
;
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Lee, Byung-Song
;
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Lee, Hyung-Woo
;
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Kwon, Sam-Young
;
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Park, Hyun-June
;
- Han, Kyung-Hee
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박찬배
(한국철도기술연구원, 주행추진연구실) ;
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이병송
(한국철도기술연구원) ;
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이형우
(한국철도기술연구원) ;
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권삼영
(한국철도기술연구원) ;
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박현준
(한국철도기술연구원) ;
- 한경희 (동국대학교,전기공학과)
- Published : 2008.11.13
Abstract
Authors design a rotary-type small-scaled linear induction motor(LIM) and a performance test machine before manufacturing a real-scaled LIM for a railway transit. The designed LIM is a single-sided, short primary type and its primary has 4 poles. The rated power is 10(kW). In order to analyze characteristics of the LIM, authors use a mixed 2D-3D FEM analysis. 3-D FEM analysis is used for calculating a distribution of eddy-current on the semi-caped AL-sheet of the secondary reaction. Authors calculate a correction factor of conductivity and an equivalent conductivity on the secondary AL-sheet using a normalized eddy-current. The equivalent conductivity which is calculated in this way includes a transverse edge-effect of the LIM. Authors apply the equivalent conductivity on the secondary AL-sheet of 2D-FEM model and get performance characteristics of the LIM. Basic characteristics such as thrust and normal force, input current, efficiency and power factor of the LIM have been analyzed with the variation of frequency and speed. In order to apply an air-gap control system, the variation of the basic characteristics have been analyzed with the air-gap length variation of the LIM. Finally, authors introduce an operation mode using the air-gap control system and conduct a research on feasibility of the system.
Keywords