Wind Governor

This component models a pitch angle regulator of a wind turbine. The inputs to the model are the mechanical speed of the machine Wm and the power output of the machine Pg. The output is the pitch angle of the turbine.

Input Parameters

Variable Pitch Control	Choice		Select Enabled or Disabled. If Disabled is selected, the initial value entered under Blade Actuator Parameters will be the output

Type of Generator	Choice		Select the machine type as Induction or Synchronous. If the machine is an induction generator, the external input Wm will not be available.

Rated ang. Frequency of the Machine	REAL	Constant	Rated angular frequency on the machine in electrical [rad/s]

Turbine Rated Power	REAL	Constant	Rated power of the wind turbine [MW]

Machine Rated Power	REAL	Constant	Rated power of the machine [MVA]

NOTE: These parameters define wind 'gusts' with a sinusoidal variation and are only enabled if Gust Wind Component is selected.

Governor Type	Choice		Select MOD 2 or MOD 5. MOD 2 is suitable for a horizontal axis turbine with three blades (see [18]), whereas MOD 5 is suitable for a horizontal axis turbine with two blades (see [19])

Gear Ratio: Machine/Turbine	REAL	Variable	Specify the period of time the gusts will be present [pu]

Power Demand –Pref [MW]	REAL	Variable	Power demand from the wind turbine [MW]

Reference Speed - Wref	REAL	Variable	Reference machine speed in electrical [rad/s]

Proportional Gain - Kp	REAL	Constant	Proportional gain of the PI regulator [°/pu]

Integral Gain - Ki	REAL	Constant	Integral gain of the PI regulator [°/pu]

Integrator Upper Limit	REAL	Constant	Upper limit of the integrator

Integrator Lower Limit	REAL	Constant	Lower limit of the integrator

Gain - Ks	REAL	Constant	Damping gain [°/pu]

Gain Multiplier - Gm	REAL	Constant	A multiplying constant [°/pu]

Min. Speed Diff. at Gain Crossover	REAL	Constant	Enter the minimum speed difference (Wm - Wref) at which the gain Ks is to be changed to Ks x Gm [rad/s]

Initial Pitch Angle	REAL	Constant	Enter the initial pitch angle in a steady state [°]

Blade Actuator Integral Gain - K4	REAL	Constant	Actuator integral gain [s]

Actuator Rate Limit	Choice		Select Enabled or Disabled. Select if the actuator rate is to be limited or not

Blade Actuator Rate Limit	REAL	Constant	Enter the rate limit. This is active only if the Actuator Rate Limit is enabled [°/s]

Pitch Angle Limits	Choice		Select Enabled or Disabled. Select if pitch angle is to be confined between two limits

Pitch Angle Lower Limit	REAL	Constant	Minimum value of the pitch angle [°]

Pitch Angle Upper Limit	REAL	Constant	Maximum value of the pitch angle [°]

Filter State	Choice		Select Enabled or Disabled. Select if the filter is active or bypassed. A notch filter (mid reject) is recommended in MOD2 models

Filter Type	Choice		Select from a range of filter types. See the 2nd Order Complex Pole with Gain component for more information

Characteristic Frequency	REAL	Constant	Characteristic frequency of the filter [rad/s]

Damping Ratio	REAL	Constant	Damping constant of the filter

Wind Governor

Description

Input Parameters