A Dynamic Linear PID Pitch Controller based on Gain-Scheduling under Wind Turbulence and Fatigue Loads
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Abstract
Wind turbines operate in dynamic environments characterized by wind turbulence, which can cause significant variations in aerodynamic loads. The output of the wind generator is disturbed and fluctuated under extreme wind turbulence and fatigue loads. It also causes fatigue loads and damage to the wind turbine. Many wind turbines can withstand the load when applied once and may not survive if the same load is applied in a cycle. Variable pitch control enables wind turbines to adapt to these conditions by adjusting the blade pitch angles in real-time. This functionality ensures optimal power generation, reduces mechanical stresses, and prolongs the lifespan of critical components. A dynamic linear PID pitch controller, enhanced with gain-scheduling, is a robust approach to managing wind turbulence and fatigue loads. Gain-scheduling dynamically adjusts PID gains under wind turbulence and fatigue loads. It estimates the irregular kinetics of the wind turbine to guarantee precise tip-speed-ratio under wind turbulence. From the Simulink results, the proposed controller changes the values of the rotor speed. As the wind speed changes, the controller also adjusts the pitch angles. These changes result in power regulation. Furthermore, they lead to improved pitch performance. Hence the proposed model will be beneficial to maintain a constant peak value even with high wind speed.
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References
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