Command Filter Adaptive Power Capture Control Based on Fuzzy Rules Emulated Networks for Variable Speed Wind Turbines With Flexible Shaft

This paper considers the power capture control problem of variable-speed wind turbine (VSWT) systems with flexible shaft. The objective is to optimize energy by tracking desired output. A novel command filter based adaptive signal feedback (PSF) method proposed design PSF controller for non-affine nonlinear VSWT a two-mass model which parameters are totally unknown. compensation dynamic adaptable designed compensate errors caused filtering and unknown gains. unavailable aerodynamic torque approximated introducing fuzzy rules emulated networks (FRENs) estimations their learning laws established derive virtual actual laws. Meanwhile, it proved that all signals in closed-loop system uniformly ultimately bounded (UUB) via Lyapunov synthesis. Finally, feasibility controllers demonstrated on 5-MW turbine.