Normalized Power Curves as a Tool for Identification of Optimum Wind Turbine Generator Parameters

Novel method for estimating the CF of variable speed wind turbines

“…A comparison between the original wind speed characteristics, for the site under study, and those obtained using the CMWS is presented in Table I [4]. The authors of [1,2] solved the integral presented in (10) and devised a CF model as a function of the main turbine curve parameters, V c , V r , and V f , and the two parameters of Weibull function, c and k, that are obtained based on the CMWS.…”

“…For sites at which wind distribution can be represented by the Rayleigh distribution (k=2), the above formula can be further simplified to the following equation: The main differences between the existing CF model, used by [1,2], and the proposed model include the following:…”

“…The proposed model can be used to design the optimum turbine rated speed, V r [2] for a specific site. In Fig.…”

“…4, the values of the CF calculated using both models are plotted against the normalized rated turbine speed (V r /c), where c is based on the MWS for Kappadagudda wind power station. The turbine power curve parameters are as in [2]. As demonstrated by the figure, there exists an optimum value for the normalized rated speed at which the maximum wind energy capture occurs.…”

“…Therefore, the Capacity Factor (CF) of a turbine is commonly used to estimate its average energy production, which in turn can be used for the economic appraisal of wind power projects at potential sites. Moreover, CF models can be used by manufactures and wind power project developers for optimum turbine-site matching, and for the ranking of potential sites [1][2][3][4][5].…”