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<p>Vertical axis wind turbines (VAWTs) are suitable for urban installations due to their low noise and operational independence from wind direction and speed. In this paper, novel explicit dynamical modeling of a rigid-flexible vertical axis wind turbine (VAWT) with three degrees of freedom (DOFs)—including fore-aft and side-side bending of the tower and rigid rotor rotation—is introduced for the first time. Another significant novelty is the development of generalized aerodynamic lift coefficients applicable across a wide range of Reynolds numbers, overcoming limitations found in previous aerodynamic models. To enhance rotor speed regulation and power output optimization, model predictive control (MPC) and fuzzy-sliding mode control (FSMC) strategies are proposed and evaluated under both normal and disturbed operating conditions. Simulation results demonstrate that the FSMC strategy significantly outperforms conventional MPC in robustness, reduced computational complexity, and precise rotor speed tracking.</p>

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Dynamic modeling and control of blade and tower of a vertical axis wind turbine as an urban power generator unit

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Mohammadreza Kheshti,
  • Hossein Mohammadi,
  • Ehsan Azadi Yazdi

摘要

Vertical axis wind turbines (VAWTs) are suitable for urban installations due to their low noise and operational independence from wind direction and speed. In this paper, novel explicit dynamical modeling of a rigid-flexible vertical axis wind turbine (VAWT) with three degrees of freedom (DOFs)—including fore-aft and side-side bending of the tower and rigid rotor rotation—is introduced for the first time. Another significant novelty is the development of generalized aerodynamic lift coefficients applicable across a wide range of Reynolds numbers, overcoming limitations found in previous aerodynamic models. To enhance rotor speed regulation and power output optimization, model predictive control (MPC) and fuzzy-sliding mode control (FSMC) strategies are proposed and evaluated under both normal and disturbed operating conditions. Simulation results demonstrate that the FSMC strategy significantly outperforms conventional MPC in robustness, reduced computational complexity, and precise rotor speed tracking.