When the wind turbine generates electricity, it must ensure that the output frequency is constant. This is very necessary for both wind turbine grid-connected power generation and wind-solar hybrid power generation. To ensure that the frequency of wind power is constant, one way is to ensure a constant speed of the generator, that is, a constant speed and constant frequency operation mode. Because the generator is driven by the wind turbine through the transmission device, this method undoubtedly requires constant frequency of the wind turbine. Speed, this method will affect the conversion efficiency of wind energy; another method is that the generator speed changes with the wind speed, and other means are used to ensure that the frequency of the output electric energy is constant, that is, variable speed constant frequency operation. The wind energy utilization coefficient of the wind turbine is related to the blade tip speed ratio (the ratio of the linear speed of the impeller tip to the wind speed). There is a certain blade tip speed ratio that makes Cp reach the maximum value. Therefore, in the variable speed constant frequency operation mode, the rotational speed of wind turbines and generators can vary within a wide range without affecting the frequency of output electric energy. Therefore, wind turbines often use variable speed constant frequency method to ensure constant output frequency.
It has nothing to do with water
Wind power is the use of wind power to generate electricity
The wind causes the blades to rotate, and the rotation is transmitted through the main shaft and passed through the gearbox to the generator. The rotor of the generator rotates to generate electrical energy
When I was a child, there was a hand-cranked generator in the physics experiment class. The wind turbine uses wind energy to "shake". The principle is similar, but of course it is actually much more complicated
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