02 Jul Green Paper
New wind generators with different characteristics compared with conventional wind turbines can improve the exploitation of this clean energy source. Aeroelastic resonance phenomena are usually considered a problem, but they can also constitute the basis of a technology for wind energy transformation. This paper is a condensed synopsis of the most general aspects of an alternative technology based on VIV fluid-structure interaction that avoids the use of gears or shafts. The application of magnetic forces to the resonant structure allows to dynamically modify the structure rigidity, which leads to an increase of the lock-in range and consequently a higher number of working hours per year. Electromagnetic induction is also one of the available strategies to transform the energy of the oscillatory movement into electricity.