Advanced Hybrid PID–Adaptive Control Strategy for Enhanced Gas Turbine Engine Performance
DOI:
https://doi.org/10.21070/pels.v8i1.2686Keywords:
Gas Turbine, Hybrid Control, 2-DOF PID, Adaptive Control (MRAC/RLS), Disturbance RejectionAbstract
General Background Gas turbine engines operate under highly variable and nonlinear conditions, yet conventional fixed-gain PID controllers cannot sustain optimal performance as operating points shift and components age. Specific Background The integration of a Two-Degree-of-Freedom PID with real-time adaptive mechanisms offers a promising pathway to enhance tracking accuracy, disturbance rejection, and long-term robustness. Knowledge Gap Existing studies rarely evaluate a fully integrated hybrid architecture that combines 2-DOF PID, adaptive estimation, anti-windup, and bumpless transfer under realistic disturbances, degradation, and noise. Aims This study designs and validates a Hybrid 2-DOF PID–Adaptive controller for a single-shaft industrial gas turbine using high-fidelity MATLAB/Simulink modeling. Results The hybrid controller significantly reduced overshoot, accelerated settling time by more than 20 percent, and maintained near-nominal performance under 10 percent simulated efficiency loss, outperforming fixed-gain PID, fixed-gain 2-DOF PID, and standalone MRAC. Novelty The research provides a unified, computationally efficient architecture that stabilizes transient behavior while continuously adapting to plant variations. Implications These findings demonstrate a practical upgrade path for industrial gas turbines, offering improved efficiency, reduced thermal stress, and enhanced reliability across the engine lifecycle.
Highlight :
- Emphasizes the role of hybrid architecture in improving transient response and stability.
- Highlights adaptive capabilities to maintain performance during component degradation.
- Demonstrates significant improvements over conventional controllers in various test scenarios.
Keywords : Gas Turbine, Hybrid Control, 2-DOF PID, Adaptive Control (MRAC/RLS), Disturbance Rejection
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