Active Structural Control with Actuator Dynamics on a Floating Wind Turbine

Abstract

of passive and active structural controllers across the entire operational envelope of the wind turbine is investigated. Simulations of a 5 MW wind turbine mounted on a barge platform are carried out in accordance with the IEC 61400-3 standard design load case 1.2 { fatigue load testing. Simulation results show that both passive and active structural controllers consistently improve power regulation and reduce tower fore-aft fatigue loads and platform pitching motion. For example, the passive and active structural controllers reduce tower fore-aft fatigue damage equivalent load by an average of 13% and 31% relative to a baseline controller respectively. The maximum tower base bending moment can also be reduced by up to 20%. However, the unconstrained tuned mass damper stroke is large and may not be practical for real-world implementation in its current form.