Both practices, i.e., layout optimization and active yaw control, are still insufficient, leaving the wind farms as one of the least power-dense forms of plants with a power density of 1–2 W/m 2. In this article, we propose the
The turbine tries to align in the wrong direction because it can''t see a valid yaw error. It means the turbine is misaligned with the actual wind direction. As a result, the turbine does not get the total energy of the wind and consequently has low
The addition of the guide vane did not influence the turbine''s capacity in receiving wind direction. The number of guide vanes varied from 4, 8, and 16 with an angle of 45°. The testing was
The wind vane is used to measure the direction of the wind. It can be made using materials that are available at home. Wind vane operates on the basis of wind pressure. Insert a pin in the middle of the straw and to the right end of the
In order to make the wind turbine better aligned toward the wind direction, reduce the yaw error, and increase the power generated by the unit, the angle errors of yaw control of wind turbine have been analyzed, in this paper, and the method
The vane wind turbine is designed to reduce negative torque in the frame work at the opposite direction of wind, by uses movable vane''s horizontal locations to the wind turbine, which uses
Download scientific diagram | The drag coefficient of the vane type with wind turbine versus the wind speed Actual power is calculated on the basis of Figs 3, 4, and uses Eqs (4). from
During commissioning, the wind vanes are oriented along the rotor axis, followed by offset correction calibration to account for wake rotation over the nacelle, thereby achieving the most
Even when following the highest industry standards for installing wind vanes, measuring wind direction is inherently difficult and hard to consistently repeat from site to site. Thus, the industry standard is an uncertainty of 5º on the
The comparisons between met mast measurements and wind turbine measurements (see Sect. 3.2.1) also show that the wind vane tends to overestimate the deviation of the wind direction, both at the Bard 5.0 wind turbine at the Rysumer Nacken test site and the eno114 wind turbine in Kirch Mulsow.
Control system of wind turbine with vane error model. The model of vane deflection angle is implemented in the “Wind Error” block. The input data for calculating the error value are the current values of the rotor rotation speed and wind speed.
To control the orientation of wind turbine, a closed-loop control system is usually used, as proposed in . It consists of wind direction sensor (weather vane), actuator (yaw electric drive) and controller. Equations of the motion of the vane as a dynamic system can be presented in the form of the equation system: (3) θ z
The comparison of the wind vane measurements before and after the yaw manoeuvre (Sect. 3.2.2) has the advantage that it can be performed without external measurements. Thus, a correction factor for the wind vane can be determined for a wind turbine with no reference measurement, such as a measuring mast or a lidar.
Explanation of the yaw angle error of the Horizontal Axis Wind Turbine. The error of yaw angle in practice reaches an average of ± 2–4 degrees as mentioned in Statistical Yearbook , depending on wind speed, pitch control type, tip speed ratio (TSR) applied, etc.
Both figures further reveal that after a yaw manoeuvre, on average, the measured wind direction does not match the orientation of the wind turbine but that the wind turbine has overshot the target by 2 to 3 ∘ for both cw and acw yaw directions. For the calculation of the correction factors, we use Eq. ( 11 ).
