tinkering Archive - Page 2 of 2

selfmade VAWT

On these pages, I am about to document the construction of a vertical axis wind turbine.

So far here I have always logged my activities, when I have worked on it.

more detailed information you can find on this pages:

As a first impression here times a video, which shows the wind wheel in operation.

It is a vertical – axis wind turbine based on the model of a Lenz2.

Homemade electricity generator for low speeds

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

The only thing I learn from buying is spending money
I was unable to find a generator that could generate significant voltage and current at low revolutions of approx. 100 * min-1
The generator should be used in a Stirling engine and possibly in a vertically running wind turbine, which does not bring the highest speeds
The generator must also be usable as a motor in order to start a Stirling engine
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
For use in the Stirling engine, the generator should also represent the flywheel mass, which means that it must have a certain torque
The test generator has to withstand my sons’ attempts to play :-)
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

(Deutsch) 002 – automatisierte Verbrauchsgenerierung und Messung