Wind turbines are a viable--and at times less costly--alternative to installing solar panels in residential settings. All wind turbines use a permanent magnet motor to generate direct current electricity. Although home appliances cannot utilize direct current, obtaining an AC power inverter will convert the electricity into a usable form power. Knowing how to install your own wind turbine system will help you achieve greater energy independence from your utility and protect the environment.
1
Research the viability of wind power for your location. Check the map displaying the U.S. annual average windpower (see Resources) for your area. If your area is highlighted in one of the dark blue shades, then you may be suitable for windpower. Another option is to go to the Weather Underground website and perform a custom search for your zip code. Set the dates for less than or equal to one year apart and the website will calculate the average wind speed for your city.
2
Lay out the parts for your turbine on a workbench. Your DC permanent magnet motor should be able to produce about 40 volts of electricity. Three to four blades should be used. They should be made from materials such as wood or polyvinyl chloride, known as PVC. Building your own blades will take more time and makes the project more difficult. PVC blades can be made by using a jigsaw to cut a 2-foot section of PVC pipe into quarters along the length of the pipe. Cut out a small rectangle at the base of the blade, so that it can attach to the hub in the next step. The size of the rectangle may vary depending on the size of your hub and motor. Shape the leading edge of each blade so that it has a 15-degree angle from a line drawn parallel to the trailing edge. The leading edge should be rounded with a belt sander and the trailing edge flattened, so that it resembles an airplane wing. Homemade Wind Generator recommends 8-foot Windmax blades, available on eBay.
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3
Drill out holes in a blade hub where the blades can be bolted and secured to the motor's shaft or gear, depending on the motor design. The blades must be connected to a gear or disk that will rotate the motor's turbine shaft. A small metal disk attached to the turbine shaft can be modified, using a drill, along with a tap and dye set, to form threaded holes for mounting the blades. Alternatively, fabricating a small wooden wheel to use as a hub for the blades to attach to the motor can be easier and less formidable than working with an aluminum disk. Eventually, a wooden hub will need more maintenance due to weathering and exposure to humidity. Attach the blades to the metal or wooden disk using nuts, bolts and a socket wrench set. Do not over tighten the blades or you'll warp the disk.
4
Weatherproof your DC motor and wind turbine assembly by enclosing it in casing. A wood casing is one option to enclose the turbine and works well due to being able to create a custom box for the turbine. The wood casing should be nailed together into a small box, just big enough to fit the turbine. Wrap plastic around the inside of the wooden box, so that it is weatherproof. Other methods for enclosing the motor include using a stainless steel chimney pipe section. Mount the generator inside the casing in order to prevent wiggling and jostling, which will allow for the maximum amount of transference for the torque from the wind to power the generator. Mountain can be accomplished through using zip ties and racket pieces, which are nailed into the box.
5
Use a soldering iron to connect 12-gauge electrical wiring to the DC motor, which will run from the turbine to the deep-cycle batteries. Use a screwdriver to attach the other ends of the wires to a charge controller, which will prevent the batteries from becoming overloaded.
6
Attach the charge controller to your deep cycle battery bank. Depending on your setup, you may need to arrange your battery bank circuit in a series or a parallel circuit configuration. A series circuit will double the voltage while a parallel circuit doubles the amperage of the batteries. Connect a series circuit by connecting the negative terminal of one battery with the positive terminal of a second battery. Continue this pattern until all batteries are connected except for two of the terminals. A parallel circuit connects like terminals between adjacent batteries. For example, the positive and negative terminals of adjacent batteries will be connected. Whichever configuration you use, you will need to have two terminals that are not connected with each other in order to hook up the AC power inverter.
7
Connect the wires of the AC power inverter with the battery terminals mentioned in the previous step. The power inverter will have at least one electrical outlet for plugging in an extension cord or power strip so that you can use it for your home's appliances.
8
Mount the wind turbine on an old residential television tower, which is easily bolted together with a wrench. Weld a bracket to the bottom of the turbine housing and use a clamp set to secure it to the tower. Erect the tower, making sure that there are at least four heavy duty cables connected to the tower and staked out in the ground for support. You may also want to consider pouring concrete footers to protect the tower and its supporting lines from wind gusts, which could potentially knock down the tower and destroy your turbine.