Homemade electricity generator – internal home page

Homemade electricity generator for low speeds

Why build a generator yourself when everything can be bought somewhere?

  1. The only thing I learn from buying is spending money
  2. I was unable to find a generator that could generate significant voltage and current at low revolutions of approx. 100 * min-1
  3. The generator should be used in a Stirling engine and possibly in a vertically running wind turbine, which does not bring the highest speeds
  4. The generator must also be usable as a motor in order to start a Stirling engine
  5. The generator has to run very lightly in order to keep losses low, i.e. no sliding contacts and no jerking, as with a bicycle dynamo
  6. For use in the Stirling engine, the generator should also represent the flywheel mass, which means that it must have a certain torque
  7. The test generator has to withstand my sons’ attempts to play :-)
  8. The construction must be simple and it must be possible to assemble it without complex special tools

In the following I log a little what I tried to get as close as possible to the goal, which at first glance seems unrealistic. (Neukirchen in April 2009)

experiment Power in watts rotation speed
Wooden Generator 1 exp. 2 0,0085 fast
Wooden Generator 1 exp. 3 0,231 fast
Kreissägeblatt Generator Exp. 1 1,6 rpm