Robust Control of Wind Turbines by Using Singular Perturbation Method and Linear Parameter Varying Model

Table 1

Parameters of wind turbine.

Descriptions	Notions	Values
Cut-in wind speed		4 m/s
Mean wind speed		15 m/s
Optimal tip-speed ratio		6.2
Rotor radius		2.5 m
Optimal power coefficient		0.4633
Air density		0.98 Kg/m^3
Gearbox efficiency		1
Wind rotor inertia		3.88 Kg⋅m^2
Generator inertia		0.22 Kg⋅m^2
Number of pole pairs		3
Gearbox ratio		6
Flux linkage		0.4382 wb
Shaft damping coefficient		0.3 Kg⋅m^2/s
Shaft stiffness coefficient		75 Nm/rad
Stator -axis inductance		41.56 mH
Stator -axis inductance		41.56 mH
Stator resistance		3.3