If you are going to do something in the 50kW range you might consider using an induction motor as a generator. I think that's what someone was recommending vis a vis hydro.
I am a partner in a small hydro plant and this style of interconnection is almost foolproof. You need a simple PLC to bring the rpms up to rated motor speed, then connect, then push the rpms higher to push current. Hydro controls would work without much modification. You need it to disconnect under a variety of fault conditions - that's sensors and software. Hilton Dier III Renewable Energy Design Solar Gain, LLC Missisquoi River Hydro LLC _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
