Build Your Own Wind Turbine PDF Download
Build Your Own Wind Turbine. This type of turbine is simple to build, but is not nearly as efficient as a well-designed horizontal axis turbine. The Savonius turbine relies solely on drag to produce the force that turns their shaft. One side of the turbine catches the moving air more than the other, causing the turbine to spin. This design does not allow the turbine to spin faster than the oncoming wind, which makes them a poor choice in areas where winds are light.
Horizontal axis turbines are by far the most common kind of wind turbine. They can be seen at several places across Canada and the United States. They are also becoming common in Europe and many other countries around the world. These turbines feature wing-like blades that generate aerodynamic lift as the wind blows past them, causing the central shaft to turn. To operate at peak efficiency, this type of turbine must always face directly into the wind. Many horizontal turbines have a large wind vane that acts like a sail, helping them to stay pointed in the right direction.
We are surrounded by hundreds of appliances that use electricity to do work. But what is electricity? Basically, electricity is a flow of electrons in a metal wire, or some other conductor. Electrons are tiny particles found inside atoms, one of the basic building blocks of all matter. We call the flow of electrons through any conductor a “current of electricity.” Each electron carries a tiny negative charge. When they move through a conductor, they produce an
invisible field of magnetic force, similar to that found around a magnet. The strength of that field depends on how many electrons are in motion. You can concentrate this field by winding the wire in which the electrons move into a tight coil with many turns. This causes many more electrons to be in motion in a small space, resulting in a stronger field. If you then place a piece of iron in the middle of the coil, the electromagnetic field will turn the iron into a
While it is true that electrons moving through a conductor produce a magnetic field, the reverse is also true. You can make electrons move in a wire by “pushing” them with a moving magnet. This is in fact how an electrical generator works. Electrical generators usually contain powerful magnets that rotate every close to dense coils of insulated wire. The coils develop a flow of electrons that becomes an electrical current when the generator is connected to an electric
You will be building an electrical generator as part of this project. It uses moving magnets to create a current of electricity in coils of wire. This generator is technically called an alternator because the electrons move back and forth in the wire, rather than flowing in just one direction as they do from a battery.