The rotating ones that generate electricity on the grassland are called windmills.
First of all, we must make one point clear. What is turned by the wind is not the generator, but the windmill, or wind turbine. Then turn on the generator.
How to turn a windmill is actually not a very complicated thing. Windmills have blades, blades that look like airplane wings. Because the blade has a certain angle of attack. After the wind flows over the blade, the flow speed will be different due to the different lengths of the two ends of the blade. There is a theorem in physics. The wider the speed of the fluid, the lower the pressure will be. Therefore, due to the different gas flow speeds on both sides, a gap is formed on one side. When the pressure is high and the pressure is low on one side, the windmill is spinning.
The principle of wind power utilization is to convert mechanical energy into electrical energy. The wind blows the blades, and the wind speed is about 3m/s~5m/s, which is very low. The blades drive the low-speed rotating shaft, and the low-speed rotating shaft drives the speed-increasing gearbox, which increases the speed and transmits it to the high-speed shaft. The high-speed shaft drives the generator to generate electricity. .