28 March 2017
EACS 2016 paper - A semi-active rocking system for wind turbines under extreme wind loads
Nicola Caterino, Christos T. Georgakis, et al.
EACS 2016 Paper No. 189In the last decades, the negative impact of the use of fossil fuels on the environment has lead to a boom in the production of wind turbines. Then, wind turbine heights are progressively increasing in order to take advantage of the smoother winds at higher altitude. But, this has led to an increased demand to control tower forces. The application of a semi-active (SA) control system is herein proposed and discussed. Its aim is to limit bending moment demand at the base of a wind turbine by relaxing the base restraint of the turbine’s tower, without increasing the top displacement, thanks to the sharp increase of dissipated energy in selected intervals of time and a consequent change in tower dynamic properties. The proposed SA control system reproduces a variable restraint...
Mechanical engineering not elsewhere classified
rocking control system