The wind speed above is the relative wind speed, compared to the wind speed of the blades. It is the combination of the wind speed in the vertical plane of rotation and the rotation speed of the blades.
You can imagine that if the blade does not move, it will be vertical. If it spins, it will always have wind speed. Once combined, it will be in this direction. In fact, it is not parallel to the inclined plane. There is also an angle called angle of attack, which will affect the power generation power Haha, I'm sorry, it's quite complicated and I can't figure it out. everything came out.
Do the blades of wind power generation turn in one direction? Do the blades always turn to the right or left?
Wind power is a clean energy technology that uses wind energy to produce electricity. Its power generation efficiency is affected bymany factors, including the following:
Wind speed: Wind speed is one of the most important factors affecting the efficiency of wind energy. The higher the wind speed, the faster the wind turbine spins and can produce more electricity. Normally, wind turbines start generating electricity when the wind speed is greater than 3 meters per second, and the wind power generation efficiency is highest when the wind speed is greater than 10 meters per second. second.
Wind direction: Wind direction also affects the efficiency of wind power generation. Different wind directions will cause the blades of the wind turbine to be affected by different wind forces and directions, thereby affecting the efficiency of power generation.
Altitude: Altitude also affects the efficiency of wind power generation. In higher altitude areas, theThe air density is lower and the force of the wind on the blades of the wind turbine is also lower, which in turn affects the efficiency of electricity generation.
Temperature: Temperature also affects the efficiency of wind power generation. When the temperature is higher, the air density is lower and the wind force on the wind turbine blades is also lower, which in turn affects the efficiency of electricity generation.
Wind Turbine Design and Quality: The design and quality of a wind turbine also affect its power generation efficiency. Excellent design can enable wind turbines to generate electricity efficiently even at low wind speeds, and high-quality materials can extend the life of wind turbines.
The parameters required for wind energy calculation can be provided by the Xihe Ene big data platformrgy (xihe-energy).
Why don't the blades of the wind turbine stand up?
To put it simply, the blades of the wind turbine are like the blades of an electric fan shaking its head. Shake your head left and right (or even shake your head in all directions to the west like an oscillating ceiling fan on a train), the direction of the blades will not change, but the electric fan will. is powered and rotates, while the generator is driven by the wind to produce electricity, and the blades rotate in the direction of the wind. When they rotate in the same direction to produce electricity, if it suddenly rotates clockwise and sometimes counterclockwise, how is it. produce electricity?
The twisted blade means that the aerodynamic profile and installation angle of the blade are differents along the length of the blade and gradually decrease from the root of the blade to the tip of the blade,
so that the blade reaches the optimal angle of attack everywhere to achieve the best.Lift to achieve higher wind power reception efficiency.
Since blade rotation speed increases with blade length, the windward angle continually changes as the blade extends.
Therefore, in order to maintain the optimal angle of attack in the upwind area of the blades, the blades of large wind turbines must be designed in a twisted shape.