Deformation of the fan blades on the rotor of the hydrogenerator will have the following effects on the generator.
1. The motor cooling fan blades are broken, and the motor cannot dissipate effective heat. The temperature rise increases, the motor becomes hot, and the insulation aging in the stator is accelerated.
2. If the fan blades are partially damaged, it will cause unbalanced operation, the motor will vibrate, and the stability of the machine base will be damaged.
I feel like I’ve said it all but can’t grasp the point. Does the so-called size compare with the electric fan? There are two types of fan leaves. I have forgotten the specific theory, but the purpose of the fan is to generate greater wind, and the purpose of wind power generation is to make more use of wind energy and generate a force that makes it rotate, which is the direction generated by the curvature of the fan leaves. Side force. But there is a problem with wind energy. It blows over a large area. If the fan surface is too large, firstly, the force of pushing back is too great and the wind turbine will fall over. Secondly, the wind energy utilization rate is too low (the fan surface is too large). Most wind energy cannot be converted into side thrust). How to calculate it specifically can be read in a document. This knowledge is necessary for every document. Last year I built a small wind turbine. This part is part of the theory, but I really can’t remember it clearly. The fan blades used are only 12% efficient. Is it very big? His lateral pressure is too small compared to the vertical pressure. Moreover, the purpose of the fan is to generate wind in a larger area. Because the area is not enough, the function of swinging the head is added. I put this thing on the wind turbine without discussing whether it can be erected (this can be done by digging a deeper foundation and changing the bracket material. , reduce the fan area - the entire large circular area. Science is to sacrifice a certain part of the performance in exchange for your most desired results), but the efficiency is really too low. As I said before, the small wind power I made The generator efficiency is only about 12%, which is far from the highest level of 50+! !