Some friends and I took a working electric motor out of an electric lawn mower.
We suspect it is a single-phase AC induction motor (correct me if I'm wrong) with a starter capacitor (pictures above). Our plan is to use this motor as a generator for a wind turbine. We tested the motor on mains voltage (230V 50 Hz) to prove its functionality. We also tested the motor twice as an generator. We used an air compressor to turn the cooling fan of the motor.
First test, we attached our multimeter to the original terminals of the motor. We got around 5-10V.
Second test, we attached our multimeter to the terminals of the starter-capacitor. That time we got pretty close to 30V. Obviously we want to get as much power as we can out of this thing, to "impress" our teachers (it's a school project).
Finally my question is: Is it a good idea to power something like a battery to these capacitor-terminals? (Of course we need to convert the AC to DC.)
I would also want to know if this generator can actually be used for a wind turbine?