Improving Modelling Accuracy of Aerodynamic Curve of a Wind Turbine Using Neural Networks
Journal Title: Journal of Scientific Research and Reports - Year 2017, Vol 16, Issue 3
Abstract
This paper addresses improved modelling of one of important aerodynamic curves of a wind turbine by means of artificial neural networks (ANNs). Aerodynamic curves play an important role in designing controller in wind turbines. Inherent nonlinearity of these curves and dependence of their current values to the operating conditions, make the wind turbine controller design a challenging problem. Currently, there are two major approaches for modelling these curves: 1- lookup tables and 2-polynomial approximation. Lookup tables are discrete and hence not suitable for continuous controller design and polynomial approximations are not accurate enough. These drawbacks impose inaccuracy to the controller design. To overcome this weakness, ANN is utilized to identify the aerodynamic curves. Specially, rotor power coefficient (Cp) is the focus of this paper as this curve has a direct effect on the controller’s parameters both in below and above rated wind speed. As ANNs are universal approximators, they can model this curve with required accuracy. Using this approach in addition to identification of Cp and obtaining a high accuracy model for this curve, optimum critical parameters of this curve can be estimated. By employing these estimated values, a new controller gain is computed. This controller is used when the wind speed is below rated speed and the rotor speed should track a reference trajectory (named variable speed or region II). Simulation shows that with this new controller the overall power capture is improved at no cost.
Authors and Affiliations
Danyal Bustan, Hoda Moodi
Keywords
Related Articles
- EP ID EP326549
- DOI 10.9734/JSRR/2017/37083
- Views 110
- Downloads 0
Comparison of Processes for Producing Better Rice Husk Silica Produced from a Field-scale Incinerator
Aim: The “amorphous” state of silica is the critical characteristic necessary for its use in various applications. Extensive experimentation has determined that the highest quality rice husk ash is obtained after treati...
Application of Costing Techniques in Ornamental Fish Culture
Indian fisheries resources need to be properly utilized for more foreign exchange earnings and for upgrading livelihood of ornamental fish farmers and entrepreneurs. Madurai district was purposively chosen as it is marke...
Diffusion of Innovations: The Status of Building Information Modelling Uptake in Nigeria
Aim: This study evaluated Building Information Modelling (BIM) awareness and adoption in Nigeria through the line of enquiry known as the ‘diffusion of innovations’ and its possible uptake. Study Design: The study is q...
Prevalence of Overweight, Obesity and Hypertension among Two Tribal Communities of Manipur
The present cross sectional study was carried out among 368 adults in which 168 and 200 are from Chothe and Vaiphei respectively, aged 18-80 years. Subjects were randomly chosen from four (4) Chothe and Vaiphei inhabited...
Organic Metabolites, Alcohol Content, and Microbial Contaminants in Sorghum-based Native Beers Consumed in Barkin Ladi Local Government Area, Nigeria
Aim: To determine the alcohol content, organic metabolites generated as well as microorganisms present in native beers. Study Design: The work is descriptive. Place and Duration of Study: Department of Biochemistry, Univ...