Pitch Controller Design of Wind Turbine Based on Nonlinear PI/PD Control

Table 1

WECS parameters.

Parameters	Value
Equivalent moment of inertia (kg·m^2)	2 × 10^4
Equivalent damping coefficient	100
Blade length (m)	28
Gear box ratio	100
Air density (kg/m^3)	1.225
Cut-out wind speed (m/s)	25
Inertia delay coefficient of blade pitch actuator	0.01
Inertia delay coefficient of torque control	0.01
Rated power (MW)	2
Rated torque (kN·m)	10^3
Rate rotor speed (rad/s)	2
Rated wind speed (m/s)	12
Generator pole logarithm	3
Permanent flux (Wb)	1.25
Maximum power coefficient	0.48