Global Dynamic Response of a Medium-Sized Floating Offshore Wind Turbine with Stall Regulation

Abstract

In this paper, a two-bladed medium-sized floating wind turbine with variable speed and power regulation by stall is studied. For floating offshore wind turbines, the major challenges are related to the dynamical behavior of the system in response to combined wind and wave loading. Especially for smaller systems, the coupling of aerodynamic and wave forces may lead to large amplitude motions. Coupled aero-hydro-servo-elastic simulations are carried out in OpenFAST. The goal of the study is to investigate the global dynamic response of the hypothetical wind turbine with stall regulation. Stall regulation concept is proposed and the structural loads are computed and results are presented and discussed.

Keywords

• offshore wind turbine
• stall regulation
• aeroelastic simulation
• variable speed operation
• torque control
• structural dynamic behavior