Adaptive Torque Control of Variable Speed Wind Turbines for Increased Region 2 Energy Capture

2005 ◽  
Author(s):  
Kathryn Johnson ◽  
Lee Jay Fingersh ◽  
Lucy Pao ◽  
Mark Balas
Keyword(s):  
Wind Turbines ◽  
Torque Control ◽  
Variable Speed ◽  
Energy Capture

Aerodynamic optimization for variable-speed wind turbines based on wind energy capture efficiency

2018 ◽  
Vol 221 ◽  
pp. 508-521 ◽  
Author(s):  
Minghui Yin ◽  
Zhiqiang Yang ◽  
Yan Xu ◽  
Jiankun Liu ◽  
Lianjun Zhou ◽  
...  
Keyword(s):  
Wind Energy ◽  
Wind Turbines ◽  
Capture Efficiency ◽  
Variable Speed ◽  
Aerodynamic Optimization ◽  
Energy Capture

Disturbance Tracking and Blade Load Control of Wind Turbines in Variable-Speed Operation

2003 ◽  
Author(s):  
Karl A. Stol
Keyword(s):  
Wind Turbines ◽  
Tracking Control ◽  
Nonlinear Effects ◽  
Load Control ◽  
Variable Speed ◽  
Composite State ◽  
Energy Capture ◽  
Simulation Results ◽  
State Models ◽  
Disturbance Tracking Control

A composite state-space controller was developed for a multi-objective problem in the variable-speed operation of wind turbines. Disturbance Tracking Control theory was applied to the design of a torque controller to optimize energy capture under the influence of persistent wind disturbances. A limitation in the theory for common multi-state models is described, which led to the design of a complementary pitch controller. The goal of the independent blade pitch design was to minimize blade root fatigue loads. Simulation results indicate an 11% reduction in fatigue damage using the proposed controllers, compared to a conventional torque-only design. Meanwhile, energy capture is almost identical, partly because of nonlinear effects.

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