Electromagnetic Computations of High Speed Single-Sided Linear Induction Machines Using a Modified Method

Abstract

In this paper, an enhanced method for analysis of high
speed single-sided linear induction machines (LIMs) with
solid secondary is developed. The longitudinal end effect,
transverse edge effect, and back-iron saturation are
considered in the proposed analysis. A computationally
efficient combined finite element and analytical method
for simulating the performance of high speed linear
induction machines is presented. It is shown that the
coupled two dimensional analytical and finite element
methods can be used for electromagnetic computations of
linear induction machines with solid secondary. The
calculated thrust forces are in good agreement with the
test results. Also, it is shown that the proposed method can
provide stable computational predictions of magnetic
field problems, and can be used as a design and analysis
tool for linear induction machines.