The Facts About Home Wind Turbine Design

Back in the day if you thought about a home wind turbine, what would have come to mind is a large tower with enormous white blades spinning rather slowly. But, with the development in technology and the need for more and more people to become energy efficient, small residential wind turbines can now be erected at home. Even better news for green enthusiasts is the ability to make their home wind turbine, without spending thousands of dollars on contractors.

So, how does a home wind turbine make power?

A home wind turbine produces power by moving a small turbine. This turbine is attached to a hub, where 3 or 5 blades are fixed, which in turn is placed at the top a tall tower. To keep the blades spinning, a guidance system or tail is attached to the hub, to keep it facing the wind.

If you do not know what a turbine/motor is or how it works, let me explain. Copper coils spin past magnets, and create an electromagnetic charge. This charge is then sent through wires to the batteries where it is stored. To use that charge in your home it needs to be passed through an inverter that changes the current from direct to alternating current. The reason wind power has become more popular on a small scale, is because of the improvement and efficiency in the design of the turbine.

The tower is usually quite tall to help the blades catch as much wind as possible. But in open, windy areas, such as near the ocean, the tower can be a little lower.

With more money being put into research, the blades have changed drastically over the years. The rotors generally have 3 instead in of 5 blades now, since the blades have become lighter, stronger, and able to spin in very light breezes. The blades also come an assortment of diameters, according to the average wind speeds and energy needs.

Up until now I have been talking about your average horizontal axis home wind turbine. But there is also another design taking off. It is a wind turbine that spins on the vertical axis. Also know as a VAWT (vertical axis wind turbine), this generator’s blades resemble some type of water-wheel on its side. The problem with the VAWT is that it spins rather close to the ground, making it unable to catch the stronger, higher up winds, so it is not a good option for residential home-owners. Also when erected in open areas, the blades are large and spin so fast birds do not see them and fly straight into them - which is not very eco-friendly.

What you need to know before you buy a home wind turbine:

How big is the property?

Wind turbines generally operate better in large areas that cover an acre. This is because wind flow is not deflected by any nearby buildings.

How windy is it where you live?

The recommended wind speed should be at least eleven miles per hour, but if that isn’t the case then you may have to use a taller tower and larger blades to catch higher altitude winds.

What else can I use the wind turbine for?

The more uses you can think of for your wind power, the more attractive it will be to get one. Windmills have been used for centuries to pump water through irrigation systems, and farmers still use them today.

Do you rely on an uninterrupted power supply?

This is why so many people want to get a small wind turbine in the first place - to keep the house powered during blackouts, and prevent economic losses. Although the wind turbine may not power the house all the time, it’s stored power can be used in emergencies, when the utilities are just not enough.

Taking the above points into consideration will help you determine how much power you require, the length of tower needed, the diameter of the blades, and the benefits and costs of using a home wind turbine.

The nice thing about technological developments is that the motor are becoming small and lighter. This make it possible to install to a few smaller wind turbine right on the roof, and make a similar amount of power to one larger home wind turbine.

Though expert installations can be anything up to $100,000, it is possible to learn how to make your own home wind turbine for a small fraction of the cost. What’s more is America and other countries offer tax rebates to energy efficient homeowners, so not only will you save on utility bills, but also pay less tax.