| G'day,
I'm currently building my first generator (abt. 1m diameter; dual rotor, 3phase, 12 *2 magnets; 9 coils each 75 windings) but have a question: I've made all the coils, but noticed somewhere that the coils should have a hole inside big enough for the magnet to fit in. Why?
The holes in my coils are a bit smaller (plus a bit 'triangular', smaller at the center of stator). What consequences will this have on output? Would it be necessary to make new coils? (lots of work, but the stator hasn't yet been cast so it's possible to do).
Hope anyone can help here.
Also, when I rub a magnet 'really quickly' past one of those coils (say, 4-5 times per second), I measure about .1V AC out; this seems very little, but perhaps other people have experience in testing coils this way.
Secondly, I haven't finished my first one (have just started) but I'm already feeling the urge to build bigger ones; have to restrain myself here, first finish the small one and learn from it.... This is definitely FUN!
I'm getting other ideas too... Like that hometrainer bike (the one that doesn't get used :-) ), why waste the power, instead use it to generate electricity... I'm starting to eye it every now and then; the wheel goes out very easily, and there's room for a 45 cm rotor (MORE POWER, IGOR!). Which makes me wonder: how much power can a human being generate (for short and/or longer periods); have read somewhere that humans can deliver 1HP (750W) for short periods, but how about for a longer, sustained period? I think that if I exchange the wheel for a generator, the bike may actually see some use. Which makes me wonder: what do they do with all the energy produced in sport gyms? And, if people knew that 'their' energy would be actually used (not dissipated as heat) to generate electricity, would they still pay for the privilege, or demand to be paid?
Grtz,
Peter
The Netherlands. |
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