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Electromagnetic Interference This concern deals with problems that the wind generators cause because of their location in comparison with already existing television or radio stations and on the other hand likely electromagnetic emissions by the wind turbines themselves. It is true that airing in the frequencies of television or even radio (mainly in the frequencies of FM) is influenced by obstacles that are interfered between transmitter and receptor. The main problem that is entailed with wind turbines emanates from the turning blades that cause fluctuation of signal because of reflections. This was much more intense in the first generation of wind turbines with metallic blades. However the blades of modern wind turbines are manufactured exclusively from synthetic materials, which have minimal repercussion in the transmission of electromagnetic radiation. Concerning the compatibility and the interjections in the telecommunications, in certain European countries the towers of wind generators not only are not obstacles, but are already used for the installation of aerials for other purposes such as mobile communications.
As far as the emitted radiation by wind turbines is concerned, the only parts that emit electromagnetic radiation of low level, is the electrical machine and the transformer of medium voltage. The electromagnetic field of the generator is exceptionally weak and is limited in a very small distance around the hub which is placed at least 40-50 metres above the ground. Therefore there’s no issue of electromagnetic exposition, not even at the base of the wind turbine. The transformer on the other hand, is closed in a metal shed and therefore the level of electromagnetic radiation is negligible. Indeed the notion that wind turbines are associated with major amounts of emitted electromagnetic radiation is a fallacy.
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