A Study on an Airgap Control System in a Rotary-Small-Scaled Linear Induction Motor for Railway Vehicles  

作　　者：C.B. Park B.S. Lee 

机构地区：[1]High-Speed Railroad Systems Research Center, Korea Railroad Research Institute, Gyeonggi-do 437- 757, Korea

出　　处：《Journal of Energy and Power Engineering》2011年第12期1193-1198,共6页能源与动力工程（美国大卫英文）

摘　　要：In general, it is important to operate the; airgap length uniformly for improving the system efficiency independent of the flatness of the reaction plate in a railway propulsion system by a linear induction motor （LIM）. And it is possible to operate the LIM propulsion system efficiently without a change of the LIM capacity through the airgap length control on the sloped rail. So, in this research, the authors introduce an airgap control system to control the airgap length which depends on the flatness of the secondary reaction plate when the LIM is operated, and design a rotary small-scaled LIM and its airgap control system before manufacturing the real system. Then, the authors analyze some characteristics of the LIM （thrust and normal force, input current, efficiency and power factor）, and through the LIM control modeling, the authors finally analyze an effect of the airgap-length control of the LIM by the airgap control system.

关 键 词：Airgap control system linear induction motor PROPULSION railway vehicles. 

分 类 号：TM359.4[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]