Optimum Shape Design of Single-Sided Linear Induction Motors Using Response Surface Methodology and Finite-Element Method

This paper deals with finding the optimal ratio of height and length of single-sided linear induction motors using the finite-element method (FEM) for magnetic-field analysis coupled with optimal design methodology. For effective analysis, the FEM is conducted in time harmonic field, which provides steady-state performance with the fundamental components of voltage and current. The ratio of height to length providing the required output power is obtained by response surface methodology and optimal values are presented by the variation in output power. When output power is small, the ratio is high and as the power increases, the ratio shows a converged value. Considering the general application of linear motors, usage of a small ratio can be limiting, however, the shape ratio for the maximum thrust can be identified.