induction motor Generator
Ok-- If I'm not mistaken, I'm assuming that yer wanting an AC power source/generator using a gasoline motor to drive it with; this can be done. I havent yet made 1, but it's cetainly do-able. From what I've gathered so far, this is how it's done:
Using induction motors as generators is a very cost effective way of providing a generator. The induction motor, is driven at 50 RPM over its rated speed and the motor becomes a generator. Induction generators are much less expensive than other types of generators, but require some kind of excitation to operate. It is possible to utilize induction motors as generators in stand alone applications, utilizing the residual magnetism in the windings, as well connecting capacitors to supply continual excitation.
Once, there was a really nice web page that explained how to make 1 using a lawn mower engine and an AC motor, but sad to say, that site is no longer with us. However, I grabbed the schematic of how it's made and have attached it here... Hope this helps.
Bob