Do small wind turbine tail fins yaw?

This report describes the aerodynamic modeling of the yaw behavior of tail fins for small wind turbines (SWTs). The analysis is based on unsteady slender body theory (USBT) and is intended to inform a new tail fin module for Open- FAST. Linearized USBT, which has been applied in the past to SWT tail fins, is developed in three main ways.

Does a larger tail fin improve the yaw performance of AeroGenesis 5 kW turbine?

The experimental measurements clearly show that the larger of the two tail fins significantly improved the yaw performance of the Aerogenesis 5 kW turbine by reducing the mean yaw error for wind speeds >3.5 ms −1 and by reducing the maximum yaw rate of the turbine to approximately 30° s −1 for wind speeds >4 ms −1.

Why do wind turbines have a higher yaw rate?

Measurements show the smaller of the two tail fins causes the turbine to operate at a higher mean yaw error than the larger tail fin and to respond at a higher yaw rate than the larger tail fin, over most of the operating wind speed range for the turbine. Unsteady slender body theory was used to predict the dynamic performance of the tail fin.

Can a bionic airfoil improve vertical axis wind turbine efficiency?

In this work, a pioneering approach is proposed to enhance the efficacy of vertical axis wind turbines within the aerodynamic field. This innovative method involves integrating a bionic airfoil, inspired by the tail fin of a swordfish, along the trailing edge of the airfoil.

Does Bionic guide fin control flow separation in vertical axis wind turbines?

2. The analysis of the vorticity distribution revealed that the introduction of the bionic guide fin to the vertical axis wind turbine effectively controlled flow separation within the phase angle range of 90° to 180°.

What is a small wind turbine?

Small wind turbines, defined by the International Electrotechnical Commission standard IEC 61400.2-2013 as machines with a power output of less than 50 kW and rotor swept area of less than 200 m 2, often operate in unsteady wind conditions and predominately track the wind using a tail fin.