I don't want to hi-jack the thread, but Wind generators depend on the type of generator at the top. Some are DC right out, but the big ones are AC.
From what I understand, there are two basic methods to phase them. One is to convert to DC and run through a large inverter, and the other is to have the alternator speed controlled and separated from the propeller speeds. Much like a CV transmission. The props can be spinning fast, but all they do is produce more torque. The alternator stays a constant speed. The second method is cheaper to do, but requires more maintenance.
Almost all of the smaller home ones are alternators (AC) and get converted to DC to charge batteries. Then batteries feed an inverter.
The reason to run AC anywhere is because you can transmit the power with lower losses. High voltage and lower amps = smaller wires.
