A new power stabilization control system based on making use of mechanical inertia of a variable-speed wind-turbine for stand-alone wind-diesel applications

2003 ◽  
Author(s):  
S. Hurtado ◽  
G. Gostales ◽  
A. de Lara ◽  
N. Moreno ◽  
J.M. Carrasco ◽  
...  
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Variable Speed ◽  
Stabilization Control ◽  
Variable Speed Wind Turbine ◽  
Power Stabilization

Continuous Variable Speed Wind Turbine: Transmission Concept and Robust Control

2000 ◽  
Vol 24 (3) ◽  
pp. 151-167 ◽  
Author(s):  
Moshe Idan ◽  
David Lior
Keyword(s):  
Control System ◽  
Robust Control ◽  
Wind Speed ◽  
Wind Turbine ◽  
Power Output ◽  
Energy Output ◽  
Variable Speed ◽  
Efficient Operation ◽  
Variable Speed Wind Turbine ◽  
Wide Range

This paper presents the theory and design of a novel hybrid mechanical-electrical variable speed wind turbine transmission, and discusses a robust control solution for optimal power output of the wind turbine equipped with such a transmission. The novel, planetary differential transmission would be driven by the variable speed rotor and controlled by a control system to ensure a constant speed of the main generator at a wide range of wind speed variations. Analysis shows that this would lead to an increase in the wind turbine energy output, estimated to be in the range of 15% to 20%, compared to a wind turbine with the same rotor and a fixed transmission. Using robust control design techniques, a single controller is synthesized for efficient operation over the entire anticipated wind speed range. The control system automatically varies the rotor speed to optimize its power output for slow wind speed variation and attenuates high frequency wind gust effects to reduce the resulting fatigue damage. Overall, the new concept provides a cost effective solution for variable speed wind turbine operation. The improved system performance is demonstrated using the results of a numerically simulated dynamic model of the proposed system.

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