I have a 155V DC generator @15 amps. I could not get the speed to get more than 50 volts. I build a pulley system with a ration of 4 to 1. Works beautifully how ever I cannot make the pulley shaft and bearings maintain concentricity for very long. There must be a system out there already in use so that I don't have to re invent the wheel. Do you or does anyone out there know of someting that is already in use? A gear drive would work even better!!
A stepper motor salvaged from a printer or scanner will be a reasonable starting point for small scale experimentation - BUT don't expect to be producing commercial amounts of electricity from it.
Avoid ones that work at ridiculous speeds on lowvoltages. The toy motors can be 8000 RPM on 3V !
You want ideally a nice big 1500 RPM, 120V DC motor, so that you can get reasonable speeds on the blades, into the motor - in the example 1500 RPM @120 V would be, roughly 150 RPM= 12V. Such beasts DO exist.
You MUST have the speed at the motor, so you'll need (lossy) belts or gear drives otherwise.
Comments
9 years ago
I have a 155V DC generator @15 amps. I could not get the speed to get more than 50 volts. I build a pulley system with a ration of 4 to 1. Works beautifully how ever I cannot make the pulley shaft and bearings maintain concentricity for very long. There must be a system out there already in use so that I don't have to re invent the wheel. Do you or does anyone out there know of someting that is already in use? A gear drive would work even better!!
Dukexyz
10 years ago
A stepper motor salvaged from a printer or scanner will be a reasonable starting point for small scale experimentation - BUT don't expect to be producing commercial amounts of electricity from it.
10 years ago
Avoid ones that work at ridiculous speeds on lowvoltages. The toy motors can be 8000 RPM on 3V !
You want ideally a nice big 1500 RPM, 120V DC motor, so that you can get reasonable speeds on the blades, into the motor - in the example 1500 RPM @120 V would be, roughly 150 RPM= 12V. Such beasts DO exist.
You MUST have the speed at the motor, so you'll need (lossy) belts or gear drives otherwise.
10 years ago
'small scale' -- depends how small. Most any PM motor will work, just add diode bridge!.
The size/cost tradeoff will show its ugly head quickly as the size increases, the cost can get pretty ugly.