How To Build a Small Wind Generator


Authored by Douglas Mefford in Energy
Published on 05-02-2009

Energy costs continue to rise with no end in sight. The planet becomes more choked with greenhouse gasses and carbon dioxide daily. There is, however, some relief for the energy addiction our civilization has. The technology to create small personal wind powered electric generators has been fine-tuned to the point of being within reach of almost any budget.

While there are professional and high power units that can be had for as little as a thousand dollars and up, the plans for small Do-It-Yourself generators can bring the cost of this energy creating device to as little as a couple of hundred dollars. The parts can be had for even less if you can find and recycle some of the parts in the construction.

A few things you will need to begin are some automobile batteries that can be connected in serial to store the electricity you will be producing. A converter box to switch the DC power to AC current for home appliance use is another thing that is best purchased new. The only other major piece of technology you will need is an automobile alternator.

To create the power source of your windmill you would begin by constructing the housing for the alternator. This can be accomplished with a segment of 6″ PVC piping and a matching end cap. After removing the flanges from the housing of the alternator; these are the tabs that hold the bolts that attach it to an auto engine, you would fit it down in the front part of the housing with the shaft to the rotor sticking out enough to attach the blades. You will need to construct a pipe on the back of the rotor that can be used to mount the entire assembly to a pole.

Over this part of the windmill interior is a long, roughly two foot piece of 2′ PVC pipe that butts up against the mounting pipe and sticks out to hold the tail assembly. A collar is placed over this to help tighten the entire assembly together and reduce vibration during its operation. Now the PVC cap is placed over the entire alternator assembly and fastened into place with silicon waterproofing put around the joints. A tail assembly fastened to the back of the alternator section can be made of simple Plexiglas, shaped however you wish and fastened tightly to the back end of the windmill construction.

Getting your newly constructed windmill up into the air and the breezes will require some type of pole or tower construction. This can be as simple as an old television antenna mast or a satellite dish mounting that can boost your windmill above any obstructions that would block the wind flow.

The wires leading from the free-turning alternator down to your battery pack can be either pulled down through the center of the metal piping or fastened along the outside of a wooden structure. It is important to make sure the turning of the windmill generator assembly does not pinch them.

Once you have attached them to the proper polarities of your serial battery pack, including an inline circuit breaker or fuse to prevent electrical spiking damage, your wind-powered alternator will begin delivering its electrical charge to your home. This simple device can save the average homeowner anywhere from 50% to 80% of their usual electrical bill while eliminating the need for over a ton of polluting greenhouse gasses yearly.


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