The windmill is designed according to the lever principle,
a machine with unidirectional forced rotation.
The windmill blades are rotationally symmetrical,
not axially symmetrical.
When there is wind,
The twisting moments generated by the blades in symmetrical positions cannot cancel each other.
From this way, some of the wind energy is retained by the windmill.
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The windmill is ready to spin.
The principles of windmills and water wheels are somewhat similar.
It is more interesting to make detailed design drawings and principles yourself.
What happens if the blades of the windmill do not turn when blowing grain?
The windmill that produces electricity in the meadows is called a windmill.
First of all, we need to clarify one point: what is powered by the wind is not the generaltor, but the windmill, or the wind turbine. Then drive the generator.
How to turn a windmill is actually not a very complicated thing. Wind turbines have blades, blades that look like airplane wings. Because the blade has a certain angle of attack. Once the wind passes 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 greater the fluid velocity, the lower the pressure will be. , due to the different gas flow speeds on the two sides, a gap is formed on one side. When the pressure is high and the pressure is low on one side, the windmill rotates.
1. The engine is not well lubricated. Therefore, the motor cannot move once the fan blades are installed. Remove the fan blades, plug in the power and the shaft can rotate.
2. The fan is overheatedffe. Overheating of the motor will also cause the load capacity of the motor to deteriorate and the active power of the motor to decrease, resulting in the inability to drive the load.
3. If the electric fan is used for a long time, the motor will wear out. Once the motor sleeve is worn out, it is easy to burn. If the motor is used for a long time, the internal resistance of the motor will also increase and the load capacity will decrease, resulting in the inability to rotate the fan blades.
4. The capacity of the starting capacitor becomes smaller. The parameters are written on the nameplate. Over time, the capacity will decrease, resulting in a decrease in motor starting torque and the inability to drive the load. Remove the capacitor and replace it with a new one, which should be 20% larger than the original one.