EFFECT OF VERTICAL MOVEMENT IN HAWT

It is known that to work properly, the horizontal-axis turbine needs the wind to flow at a right angle to the blades. If it blows from a different direction than the blades are facing, the turbine gets much less energy from the wind. To accommodate changes in wind direction, the turbine has a yaw drive that rotates the units direction. By contrast, a vertical turbine runs well regardless of wind direction, making it better-suited to urban areas with tall buildings where wind turbulence is a given. The vertical-axis design allows it to operate on lower wind speeds than is possible with the horizontal turbine. So, this paper focusses on the pitch movement as well as the nacelle and tower movement of the turbine in three dimensions with respect to the ground as the wind should be at right angle to the blade of the turbine or the attack of angle to the blades should be 0ₒ. This paper analyses if the increase in efficiency of the HAWT turbine due to the pitch movement is significant as well as the cost set up for the vertical movement is reasonable with the increase in efficiency (i.e., power increment ultimately leads to the profit increment). For this NACA0012 aerofoil was chosen as the wind turbine blade in this blade. Since, it is well known as DU, FX and NACA-63 and NACA-64 series aerofoils are commonly used for the blades of HAWT turbine. The aerofoil was simulated using ANSYS 15 software at assumed 10 m/s wind velocity for the attack angles 00, 150 and 300 and analysis of power difference is to be analysed.