Principle of wind turbine variable pitch speed measurement generator

What is a variable pitch wind turbine control system?

The herein-developed controllers are devoted for variable speed, variable pitch wind turbine control for high wind speeds. The main objective of the control system in this area is to reduce electrical power and rotor speed fluctuations while reducing the control loads.

How do variable speed wind turbines control torque and pitch angle?

In this thesis the torque, speed and pitch angle control of variable speed wind turbine is investigated. In particular, it concentrates on the extraction of max-imum available energy, reduction of torque and output power variations, which gives stresses in the gearbox and mechanical structure.

How to control a variable speed wind turbine?

A new control strategy for a variable speed, variable pitch wind turbine is proposed in this paper for the above-rated power operating condition. This multivariable control strategy is realized by combining a nonlinear dynamic state feedback torque control strategy with a linear control strategy for blade pitch angle.

Is there a pitch-controlled variable speed doubly-fed induction generator (DFIG) wind turbine model?

Thanks to one of my former PhD supervisors Mattia Marinelli, I can provide a pitch-controlled variable speed doubly-fed induction generator (DFIG) wind turbine model in DIgSILENT PowerFactory. Mattia developed and implemented the comprehensive model to study and teach wind integration in the power system.

What is pitch control in a wind turbine?

Pitch control is relatively fast, however, and can be better used to regulate power flow especially when near the high speed limit. Figure 1 shows the system under consideration. The wind turbine is connected to a variable-speed wind turbine. The generator output can be controlled to follow the commanded power.

What is the pitch angle of a wind turbine?

As expected for this wind speed range, the pitch angle is passive, being kept constant to its optimal value (i.e. zero for the considered wind turbine). The active power delivered to the grid does reflect the variation in the wind speed. Notice that the fast oscillations in the wind speed are completely filtered out from the electrical power.