Adaptive Control of the Aerodynamic Flaps of the Savonius Rotor Under Variable Wind Loads


Fazylova A. Alipbayev K. Iliev T. Kaliyeva N.
June 2025Multidisciplinary Digital Publishing Institute (MDPI)

Applied Sciences (Switzerland)
2025#15Issue 11

This study presents the development of an adaptive control system for aerodynamic flaps of a two-tier vertical-axis Savonius wind rotor to improve performance under variable wind loads. The approach includes detailed kinematic and dynamic modeling of the flap actuation mechanism, accounting for real-world nonlinearities such as backlash, friction, and impact loads. The mechanical transmission system is analyzed to evaluate the influence of design parameters on system dynamics and control accuracy. A mathematical model of an adaptive PID controller is proposed, capable of real-time adjustment of gain parameters based on external wind torque. Numerical simulations under various wind conditions demonstrate that adaptive tuning significantly enhances system stability, reduces overshoot, and ensures faster response compared to fixed-parameter controllers. Sensitivity analysis confirms the importance of mass distribution, mechanical stiffness, and damping in minimizing vibrations and ensuring durability. The developed system provides a reliable solution for efficient wind energy conversion in dynamic environments, including urban and coastal applications.

adaptive control , aerodynamic flaps , PID controller , Savonius rotor , variable wind loads , vertical-axis wind turbine

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Department of Electronic Engineering, Almaty University of Power Engineering and Telecommunications named after G. Daukeev, Almaty, 05000, Kazakhstan
Department of Telecommunications, University of Ruse, 8 Studentska Str., Ruse, 7004, Bulgaria

Department of Electronic Engineering
Department of Telecommunications

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