Effects of Joints in the Secondary Conductor and back-iron on Dynamic Characteristics of Linear Induction Motor

2차 도체판 및 back-iron의 접합부가 선형 유도 전동기의 동특성에 미치는 영향

Linear Induction Motors (LIMs) with the long secondary conductor often have joints between the segmented secondary, which are specially used for magnetically levitated high-speed vehicle and elevators. In this paper, the dynamic characteristics of the LIM with joints in the secondary are investigated using the time-stepping finite element analysis. It is supposed that both aluminium conductor and back-iron have joint in the active zone during the analysis. As a result, thrust and normal force ripple which have effects on the motor dynamics and vibration are examined.