Wind turbines of today are the heirs of know-how acquired through windmills. On the same principle, wind turbines (windmills) use the wind to generate a rotational movement which, through a current generator, producing electricity.
In addition to the large wind turbines that can be seen in the fields, there are smaller individual wind turbines that can adapt to different environments. The principle of operation of small wind (less than 30 kW power) is exactly the same as the big wind power, size, production and regulatory change.
The small wind turbine suitable for my case
There are two main types of wind turbines which are distinguished from one another by the orientation of the axis of rotation. The best known are the horizontal axis wind turbines that usually have three blades and are moving into the wind to pick up energy.
The vertical axis wind turbines are less popular because their design is more recent. This type of turbine is suitable for turbulent winds (irregular) and small towns. The peculiarity of these turbines is a form conducive to enhancement of winds from all directions.
The disadvantage is their small wind speed is greater than the larger models, which generates noise and vibrations. For that vibrations do not cause damage (cracks, looseness, ...), it is necessary that the support is adapted and revised periodically. The noise level of a small wind turbine is below the background noise (car, neighbors, etc..) Prevailing in an urbanized city.
My home wind
The first step to a wind project is the study of individual wind at your home. A tree, a house or any element height may affect the quality of the winds and make almost no electricity. The mast height of the turbine. Up to 12 m high, the facility is subject to regulation under urban planning, however, municipalities often require a prior declaration to the work.
Beyond 12 m, one must obtain a permit from the prefecture. If the energy produced is for own consumption, it is the mayor who will grant you a permit. In the case of resale to EDF Energy is the Prefect of the department issued. Feed-in tariffs for electricity vary according to circumstances, but rarely exceed 8 Euro cents or 0.098344 U.S. dollars per kWh.