Abstract
This paper deals with the optimized design of cage induction motors considering cost of active materials as the objective function and performance quantities as constraints. All the expressions involved are highly nonlinear and constraints are of inequality type. Three different optimization methods have been used, i.e. Incremental Search Method, Rosenbrock's method and Complex-Box method, to obtain the optimum design. The explicit independent variables considered are ampere conductors/ m, stator stack length to pole pitch and slot depth to slot width ratios, stator core depth, average air gap flux density and stator and rotor winding current densities. Finally, a comparative study of these methods is presented.
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