Reply #10: Cool and true that wanting to be able to not be run over because of being so slow [View All]

[madokie]

I have several alternators, one that I built a welder out of years ago that is still good to go and may be what I'm looking for. I had to replace the diodes with much larger ones to take the welding current. It will put out 100 amps current into a welding voltage of 25 or so volts with a 100% duty cycle. I had to increase the number of winding in the rotor some and speed it up to around 7000 rpms to do that though which would pretty much rule it out for this project. My neighbor has a 4 kw wind turbine that uses a 5 hp ac motor for the generator that the gearbox overruns to make it into a generator. I've also played around with using a three phase motor as a generator by powering up one leg with ac and then when I connect another motor to it to turn it it will put out 120 or 240 ac depending on hookup and of which I just happen to have a 7.5 hp one of. Do you know anything about doing that, using a three phase motor to generate power with. I read about it somewhere back years ago that made me try and find it did work, how efficiently or anything I can't say though.