- Jan 1, 1970
I do some volunteer work that provides rural villagers in Nepal with
WiFi communication (See http://NepalWireless.net if you are
interested). As part of this work, we need to develop a human powered
generator to charge our solar batteries when there is no sun for
months on end. Is a car alternator and a bicycle a possibility? How
much current/voltage does a typical alternator produce and what RPM is
necessary? These are both readily available in Nepal, so they would
be idea. Thanks very much.
I'd guess that a car alternator would be serious overkill... too much
windage and bearing loss, and even the field excitation would exhaust
the peddler pretty quick. A smaller permanent-magnet motor would
probably be a better match at this power level. Maybe
A motorcycle generator (PM rotating field)
An auto window-winder motor. New ones are super-magnet field things
A PM stepper motor, maybe from an old printer. Maybe several.