Feathering and retiring wind turbines are two different states in wind turbine operation. The main differences are:
1. Feathering state: In the feathering state, the blades of the wind turbine are parallel. facing the direction of the wind, the blades rotate in the same direction as the wind. At this stage, the wind turbine blades can capture the wind energy as much as possible and convert it into mechanical energy.
2. Propeller retraction state: In the propeller retraction state, the fan blades are adjusted to be perpendicular to the wind direction, forming an angle of 73 degrees to 90 degrees. At this time, the resistance of the fan blades increases, the fan is less affected by the wind, and the rotation speed slows down. The retracted propeller condition generally serves to protect the wind turbine components. For example, during extreme weather conditions (such as typhoons,strong winds, etc.) or during maintenance, the wind turbine will adjust the blade angle to reduce stress and mechanical load. components.
In summary, the feathering state aims to maximize wind energy extraction and achieve efficient energy production; The retracted state aims to protect the wind turbine components and reduce the operating load. The wind turbine can automatically switch between these two states according to actual needs.
To put it simply, the blades of a wind turbine are like the blades of an oscillating electric fan. Even if you shake your head left and right (or even shake your head in all directions like a oscillating ceiling fan on a train), the blades do not change, but the electric fan rotates when electricity is supplied, while the generator generates electricity when the wind blows on the blades. The blades rotate with the wind and in the same direction pto produce electricity. If it suddenly spins clockwise and sometimes counterclockwise, how can it produce electricity?