Simulating the dynamic behavior of a vertical axis wind turbine operating in unsteady conditions

The Science of Making Torque from Wind

Battisti, L.^1 ; Benini, E.^1 ; Brighenti, A.^1 ; Soraperra, G.^2 ; Castelli, M. Raciti^3

Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, Trento

38123, Italy^1

Tozzi Nord Wind Turbines, Via S. Sebastian 21, Trento

38100, Italy^2

Department of Management and Engineering, University of Padova, Stradella S. Nicola 3, Vicenza

36100, Italy^3

关键词: Angular positions;    Dynamic behaviours;    Experimental curves;    Rotor aerodynamics;    Simulation platform;    Transient phenomenon;    Unsteady conditions;    Vertical axis wind turbines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/4/042012/pdf
DOI  :  10.1088/1742-6596/753/4/042012

来源: IOP

【 摘 要 】

The present work aims at assessing the reliability of a simulation tool capable of computing the unsteady rotational motion and the associated tower oscillations of a variable speed VAWT immersed in a coherent turbulent wind. As a matter of fact, since the dynamic behaviour of a variable speed turbine strongly depends on unsteady wind conditions (wind gusts), a steady state approach can't accurately catch transient correlated issues. The simulation platform proposed here is implemented using a lumped mass approach: the drive train is described by resorting to both the polar inertia and the angular position of rotating parts, also considering their speed and acceleration, while rotor aerodynamic is based on steady experimental curves. The ultimate objective of the presented numerical platform is the simulation of transient phenomena, driven by turbulence, occurring during rotor operation, with the aim of supporting the implementation of efficient and robust control algorithms.