Design and Analysis of a Double-Sided Linear Induction Motor for Transportation

An air-bus system is proposed as one alternative to urban mass transportation. The propulsive force of this system is generated by a linear motor. Several single- or double-sided linear motor topologies could be employed, but a double-sided linear induction motor (LIM) is preferred due to its simple passive track and high value of force density. Several research works were carried out to develop analytical models for the analysis of LIM performance. In this paper, a quasi-1-D analytical method is proposed to analyze motor performance, and the longitudinal and transversal edge effects are considered as well. Accuracy of the proposed method is evaluated by comparing the analytical results with the experimental data, which shows acceptable conformity. Then, the motor design for the desired application is presented and its performance is evaluated by both finite-element method and analytical modeling. Derivations of major equations are given as well.