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A unified procedure for the design optimization and performance predetermination of wind-driven three-phase Self-Excited Induction Generators (SEIGs) has been attempted using Genetic Algorithm (GA) twice, in two nested loops. The outer loop is meant for the calculation of the values of turns per coil of the stator winding and the excitation capacitor which would meet the specified performance constraints of the generator. The inner loop

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This paper considers constant-speed electricity generation using induction generators.Taking ty pical wind-farm site data, a case study allow s performance evaluation of the previously proposed delta-star induction g enerator feeding power to the grid. By making an annual estim ation of energy fed to the g rid and reactiv e power draw n from the grid, advantages of this m ulti-sta g e g enerator are show n. A method for studying the effect of variation in wind speed pattern, on the annual reactiv e power draw n from the grid is indica ted. A perform ance compa rison with som e other wind-driven consta nt-speed induction g enerator sy stems is also m ade.