Shafaqat, UsmanButt, SaadHaris, Hafiz AliJaved, Tayab Ali2017-10-122017-10-122016https://escholar.umt.edu.pk/handle/123456789/2154Supervised by :Sir Muhammad AtifWe Know that the in present days and in future the wind energy is rapidly grow. In the year of 2006 the generating capacity in the world increased by 26%, a growing rate which has more or less been nonstop during the last decade. And there is no reason to believe that this growth will slow significantly in the coming years. For example, the United Kingdom's goal for installed wind turbines by 2020 is 33 GW up from 2 GW in 2006, an average annual growth rate of 23% over that world. More than half of all turbines are installed in Europe, but United States, India and lately China are also rapidly growing markets. Now the wind provides more than 20% of the electrical power in our systems, the industry has professionalized and has close ties with public research at universities. This focus issues is concerned with research in wind energy. The main purposes of research in wind energy are to decrease the cost of power generated by the wind; • increase the reliability and predictability of the energy source; • investigate and reduce the adverse environmental impact of massive deployment of wind turbines; • Build research based educations for wind energy engineers. This focus issue contains contributions from several fields of research. Decreased costs cover a very wide range of activities from aerodynamics of the wind turbine blades, optimal site selection for the turbines, optimization of the electrical grid and power market for a fluctuating source, more efficient electrical generators and gears, and new materials and production techniques for turbine manufacturing. Turbines. To design such a farm optimally it is necessary to understand the chaotic and very turbulent flow downwind from a turbine, which decreases the power production and increases the mechanical loads on other nearby turbines. Also addressed within the issue is how much conventional power production can be replaced by the ceaseless wind, with the question of how Greece's target of 29% renewables by 2020 is to be met efficiently. Other topics include an innovative way to determine the power curve of a turbine experimentally more accurately, the use of fluid dynamics tools to investigate the implications of placing vortex generators on wind turbine blades (thereby possibly improving their efficiency) and a study of the perception of wind turbine noise. It turns out that a small but significant fraction of wind turbine neighbors feel that turbine generated noise impairs their ability to rest. The annoyance is correlated with a negative attitude towards the visual impact on the landscape, but what is cause and effect is too early to say. As mentioned there is a rush for wind turbines in many countries. However, this positive development for the global climate is currently limited by practical barriers. One bottleneck is the difficulties for the sub-suppliers of gears and other parts to meet the demand.enElectrical powerpractical barriersBS In Electrical Engineering ThisisThesis