It's normal. If you find a small DC brushed motor and use it as a generator, the resistance will be very low when running with no load. When the load is turned on, the resistance will increase, I don't know what. the structure of a wind turbine is, but the principle should be similar. The electromagnetic torque generated by the current in the winding hinders the movement of the rotor when there is no load, so basically there is only friction. resistance of the mechanical system. With a heavier load, the effect of electromagnetic force is more obvious. The principle of regenerative braking of electric motors is almost the same.
This is indeed completely false. If you have studied relevant specializations, you will know where you are going wrong. If you haven't learned it, it will be difficult to explain it to you. But one thing you just have to remember is that no matter how you improve it, the electricElectricity generated by the extra resistance of the car pushing the generator fan will never be greater than the extra electricity consumed. This is the law of conservation of energy. Even if you are a scientist, you cannot solve this problem.