Effect of Coefficient of Performance for ...

This paper presents estimation of optimum speed parameters of wind turbine generator using new formulation of capacity factor. The formulation includes the effect coefficient of performance between cut-in and rated wind speed of the wind turbine generator. Second Mean Value Theorem for integrals and Weighted Average Harmonic Mean are applied to derive the capacity factor expression. The proposed model is tested using the actual wind data measured at Kappadgudda wind site. Analytically computed speed parameters are compared with the speed parameters of wind turbine generator installed at site to show the effect of coefficient of performance. It is observed from results that the accuracy in assessment of power in the wind and performance of wind turbine generator improves by 20 % with the new model. The proposed model helps in wind farm planning and site matching of wind turbine generator.