Abstract
In the design of electrical machinery, direct search methods of conventional optimization techniques are widely used. In the recent years, Genetic Algorithm (GA) has been successfully applied to the design optimization of electromagnetic devices and electrical machinery. In this paper, an optimal design method to optimize the cost of three phase Induction Motor (IM) is presented. The motor design procedure consists of a set of non - linear equations, which imposes IM characteristics, motor performance, magnetic stresses and thermal limits, and also checks that certain constraints imposed are not violated. Optimization has been carried out using a conventional optimization method, Rosenbrock's method and also using GA. A combination of conventional optimization technique with GA (i.e., results obtained in Rosenbrock's method are fed as input data in GA process) has also been carried out. A comparative study and analysis of the end results obtained through computer simulations are presented in the paper.
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