Research on static longitudinal end effect of linear induction motor with multi-segment primary

Due to the existence of long unexcited primary between the import and export of linear induction motor (LIM) with multi-segment primary, the static longitudinal end effect are different comparing with conventional LIM. Based on the unbalance phenomena and discipline of mutual inductances, the asymmetry mechanism was analyzed by electromagnetic field theory and ANSOFT software. The influence of thrust, yoke field and parameters because of static longitudinal end effect was presented. A prototype machine is designed and experimental results show a good agreement with the theory analysis. It provides a new way for the study of control strategy and its implementation of this kind of machine in future. ©2009 Chin. Soc. for Elec. Eng.