Overview
Produce linear models for the development of closed loop control algorithms and make use of advanced features such as LiDAR
The Bladed Control module is of particular use to control engineers, providing valuable assistance in the design of closed loop controllers for wind turbines.
Linearisation
Starting from the full dynamic model defined in Bladed, including as many degrees of freedom as desired, a set of linearised models is exported for each of a series of operating points.
Use the linear model to design closed loop controllers
The linearised models are given in state-space form, both as text and directly in MATLAB format, ready for use by the MATLAB Control toolbox as used by many control engineers.
This is extremely convenient, and is especially valuable for wind and tidal turbines because of the complex coupled structural dynamics together with aero- and hydroelastic feedback.
State space matrices are output in MATLAB ready format
Typical applications include the design of both collective and individual pitch control algorithms, torque controllers, and combined multivariable controllers. Typical controller inputs might include measured rotational speed and structural accelerations and bending moments.
LiDAR
LiDAR is a laser Doppler anemometer system. Lasers mounted on a turbine measure wind velocities upstream of the turbine and send the information to the controller. The LiDAR definition allows a number of beams to be specified that take velocity measurements at intervals and pass the data to the external controller. There are options for blade, hub or nacelle mounted LiDAR and for different scanning patterns.
Use LiDAR to enhance power production control algorithms