1: The blades of the windmill need to be enlarged so that the windmill has enough power to drive the generator. The bigger the blades, the better.
2: The power of the windmill has increased, but the speed is not enough. You can give the generator a 2x gear to drive the generator. That is to say, one rotation of the windmill will drive the generator to rotate twice (professional The same principle applies to wind turbines) The prerequisite wind force must be sufficient. Coastal areas are best suited for wind power generation. Do not change the number of turns inside the generator. Your generator should be able to generate 14-18V voltage, and the power should be 200W. The simpler you make it, the better. The more complicated it is, the more power it will consume. (If you have any questions, please ask me. These are also my hobbies)