Finite Element Analysis of a Linear Indution Motor with Cage-type Secondary Taking Account of End-bar Resistance

농형 2차측을 갖는 선형 유도 전동기의 엔드바 저항을 고려한 유한 요소 해석

In this paper, electromagnetic fields of a linear induction motor with cage-type secondary are analyzed by the finite element method. Contact resistances between end-bars and secondary conductors are considered in the finite element analysis. The field quantify is a magnetic vector potential transformed into a phasor form. As a result, the sensitivities of a phase current thrust and normal force are presented according to the variation of the contact resistance.