The cross section of the aerodynamic profile of a wind turbine blade is very similar to that of an airplane wing. The principle is also very similar when the airflow flows from the wing tip and passes through the upper and lower surfaces of the blade respectively, due to the uneven areas of the upper and lower surfaces and the flow velocities d If the air is uneven, a pressure difference is generated. on the upper and lower surfaces, which forms lift. The lift force can be broken down into two directions, parallel and perpendicular to the plane of rotation of the blade. The force in the parallel direction causes the blade to rotate and the force in the vertical direction causes the blade to bend backwards. In practice, we see that the tips of the blades in operation are curved.
Wind turbineshave pitch and yaw systems. The pitch system can adjust the upwind angle of the blades loWhen the wind speed changes, so that the turbine rotation speed reaches the optimum and the maximum power of the generator is achieved; The yaw system can adjust the wind angle of the wheel and gimbal when the wind direction changes, so that the wheel always runs in the wind direction.
1. The cabin will change with the change in wind direction.
2. The pod and wheel are mechanically connected together when the wind direction changes, the wheel and pod remain perpendicular to the wind direction.
3. Changes in wind direction will not affect generator power. Only when the wind speed changes will the power output of the generator be affected.