300 Watt Bicycle Generator Application

Discussion in 'The Projects Forum' started by hawaiienergy, Apr 9, 2013.

  1. hawaiienergy

    Thread Starter New Member

    Apr 5, 2013
    22
    0
    Hey guys,

    What can I directly connect to this generator?
    I would like to power something so I can measure some data.
    I dont have a battery or a charge controller so I'm trying to just power someting directly from this generator

    Thank you guys for the help!!!!
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    So you want to pedal on bike to generate some electricity? Do you ralize humans can only make about 100W continuously?
    Any way, everything depends on the details of that generator, like voltage and current
     
  3. hawaiienergy

    Thread Starter New Member

    Apr 5, 2013
    22
    0
    this is the generator I have right now

    http://www.amazon.com/gp/product/B0...&pf_rd_t=101&pf_rd_p=470938811&pf_rd_i=507846

    it doesnt need to be a large appliance. just something to power and measure some data.
    right now i have it connected to multimeter and also a WattsViewer which is a board with a program that can measure volts, amps, and watts.
    since its not connected to load, I can't get any readings or values except volts only :(
     
  4. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Maybe some 12V car bulbs, better two in series? Or some load resistor, say in the neigborhood of 2ohms?
     
  5. hawaiienergy

    Thread Starter New Member

    Apr 5, 2013
    22
    0
    cool thanks
    ill go try it out.
    just 2 ohms????
     
  6. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,073
    3,854
  7. gerty

    AAC Fanatic!

    Aug 30, 2007
    1,153
    304
    Plus he'll have to regulate the voltage, output goes up to 40volts
     
  8. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    That's a pretty cool little generator, but darn expensive. Think I'd just get an old chevy alternator from the junk yard.
     
  9. wayneh

    Expert

    Sep 9, 2010
    12,156
    3,063
    Two problems with that: 1) An automotive alternator requires current through the field windings to create the magnetic field. They're not PMAs yet, although I think there are some automotive PMAs out there. 2) An alternator is designed for MUCH higher rpm than can be expected from a bicycle, even with pulleys to increase the gear ratio. A few hundred rpm won't do much.

    This all said, output per dollar might not be so bad, because you can probably find one for free if you're persistent.
     
  10. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    You need just a little to get it started. After that, you can self-excite

    If you're mechanically adept, you can rig up a 2 or 3 stage pulley system. But now that's getting complicated.
     
Loading...