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Alternator to generate power? Answered

If got an old car alternator and want to connect it to a battery, I'm using a waterfall to turn a bicycle weel with blades, to turn the alternator.
is the slow speed going to be a problem?

Tags:Water

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erik_montesdeoca

2 years ago

Yes you can do it , use and DC motor a diode bridge and a capacitor with a large Capacitante mora than 6800 uF to almacenate the energi, and you can add and "voltage doubler" or "voltage triplier" :)

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icengerik_montesdeoca

Answer 2 years ago

Then the current will be minimized by the multiplication ratio and efficiency.

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iceng

2 years ago

A
coil generated voltage using a magnet increases as the speed of the
magnetic flux passes over (through) the coil wires... The regulator
keeps higher voltages from developing at higher RPM.

YES, low speed is a problem for a car alternator. even with the regulator disabled for full output..

You might do better with a bike generator.

Click the pic to see the whole image.

alternator.jpg12vGen.PNGBikeGen.jpg
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steveastrouk

2 years ago

Yes, you;ll have to gear it up to the sort of speed the alternator wants, which is probably at least 3000RPM

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-max-

2 years ago

"is the slow speed going to be a problem?"

Yes, almost definitely. The alternator is designed to run at the RPM your engine runs at. Turning it at like a measly 30ish RPM (guessing) isn't going to do anything. Might generate a few microvolts.