The larger the blades, the greater the mass. When the wind is weak, the blades may not be pushed. When the blades are large, the wind receiving surface will be powerful and may cause the motor to burn out. out. Additionally, the voltage varies between minimum and maximum, which is extremely unstable. The size of the blades should be determined based on the average of the maximum and minimum normal wind speeds in your area to make their rotation more stable. I hope I can help you.
I feel like I've said it all, but I can't seem to get the point. Is the so-called size comparable to the electric fan? There are two types of fan leaves. I forgot the specific theory, but the purpose of the fan is to generate more wind, and the purpose of wind power generation is to use more of the wind energy and generate a force that turns it. , Who is heredirection generated by the curvature of the fan leaves. But there is a problem with wind power: the area it blows is very large. If the fan area is too large, firstly, the thrust force is too large and the wind turbine will fall. is too weak (fan surface area is too large). Most wind energy cannot be converted into lateral thrust). How to calculate it specifically can be read in a document. Last year I built a small wind turbine. This part is part of the theory, but I really don't remember it clearly. The fan blades used are only 12% efficient. Is it very big? Its lateral pressure is too low compared to the vertical pressure. Additionally, the purpose of the fan is to generate wind over a larger area. As the surface area is not enough, the head swing function is added, I put this thing on the windshieldenne without discussing whether it can be erected (it is possible). this can be done by digging a deeper foundation and changing the support material, reduce the fan area - the whole science is about sacrificing some part of performance in exchange for the most desired results), but efficiency is really too much. weak. As I said before, the little wind power I produced. The generator efficiency is only about 12%, which is far from the highest level of 50+! !