Suan Li Feng

1. So far, I think the risk of mchain's contract computing power is relatively small, because mchain is in the mining stage, the current price is relatively low, and the number of players is small, and the circulation is relatively small, so the risk return ratio is high. In the future, with its continuous growth, the value of mchain will continue to rise.

2. The speed of windmill in wind power generation is generally very slow, but it can be increased by gear transmission (big gear with small gear) to make the generator generate 50 Hz alternating current. In actual use, the wind turbine also has a set of speed stabilizing mechanism, and the angle of windmill fan blade is automatically adjusted with the wind force. To ensure the constant speed.

3. Downwind angle + (wind x2)
upwind angle - (wind x2)
it seems like this

4. According to the calculation formula of wind turbine power, the conversion efficiency CP is 0.2!

5. First of all, measure the air volume in a year
then, measure the power generation of the fan in a year
then, measure how much wind the fan generates so much electricity and uses,
I think you should know what to do with the rest~

6. It is suggested to systematically understand the relevant knowledge of wind turbine. Wind turbine is mainly composed of blade, wind wheel, motor, tail rudder, pole, pull table, etc. The size of the blade depends on the success rate of the wind turbine design
search "basic knowledge of wind power generation" on the Internet to see the relevant introction, then you can know the basic knowledge, and then ask questions according to the actual proction

7. Because wind is not a stable energy source, the speed of the blade is closely related to the size of the wind, the size of the torque and the shape of the blade. Generally, in order to get a relatively stable speed, the generator is driven by the relatively constant speed obtained by the variable ratio transmission device
in order to achieve high power generation efficiency, wind turbines often use NdFeB permanent magnet generators with high magnetic energy proct. If it is not used for grid connected power generation to earn state subsidies, it is used for charging batteries in areas with power supply difficulties (such as signal relay stations)
calculating the turns of generator is no different from that of ordinary permanent magnet generator
to calculate the number of turns, it is necessary to find out such quantities as the generator speed n, the output voltage V, the number of motor poles P, and the maximum flux through the coil Φ， Let X be the number of turns required for the generator
V = 2 π nP Φ x/√2＝4.44nP Φ X
i.e. x = 4.44np Φ/ V

8. How is the power versus time curve? The curve of power versus wind speed should be taken. In order to calculate the U and I values at different speeds, it is necessary to calculate the electromotive force at different speeds first, and then calculate the U and I according to the impedance characteristics of the motor, which is a complex model.