Analyses of Dynamic Behavior of Vertical Axis Wind Turbine in Transient Regime

• Published in: Advances in acoustics and vibration Vol. 2019; pp. 1 - 9
• Main Authors: Zghal, Bacem, Bel Mabrouk, Imen, Walha, Lassâad, Abboudi, Kamel, Haddar, Mohamed
• Format: Journal Article
• Language: English
• Published: New York Hindawi 01.01.2019; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Aerodynamics; Air-turbines; Algorithms; Analysis; Bevel gears; Computer simulation; Design parameters; Differential equations; Differential gears; Dynamic models; Energy; Finite element method; Flow velocity; Fluid dynamics; Numerical analysis; Pressure distribution; Reynolds number; Stiffness; Theory; Torque; Turbines; Variations; Vertical axis wind turbines; Vibration; Wind speed; Wind turbines
• ISSN: 1687-6261; 1687-627X; 1687-627X
• DOI: 10.1155/2019/7015262

In this paper, the dynamic behavior of a one-stage bevel gear used in vertical axis wind turbine in transient regime is investigated. Linear dynamic model is simulated by fourteen degrees of freedom. Gear excitation is induced by external and internal sources which are, respectively, the aerodynamic torque caused by the fluctuation of input wind speed in transient regime and the variation of gear mesh stiffness. In this study, the differential equations governing the system motion are solved using an implicit Newmark algorithm. In fact, there are some design parameters, which influence the performance of vertical axis wind turbine. In order to get the appropriate aerodynamic torque, the effect of each parameter is studied in this work. It was found that the rotational speed of the rotor shaft has a significant effect on the aerodynamic torque performance.