scholarly journals A synthesis of a blade pitch control for large wind turbines, taking into account the functional dependence of the torque generated in the blades from the azimuth angle

2018 ◽  
Vol 234 ◽  
pp. 04007
Author(s):  
Julian Genov
Keyword(s):  
Wind Speed ◽  
Functional Dependence ◽  
Vertical Direction ◽  
Optimization Procedure ◽  
Variable Pitch ◽  
Pitch Control ◽  
Low Wind Speed ◽  
Fluid Field ◽  
Variable Pitch Control ◽  
Large Wind

In multi-MW (1MW and up) wind generation systems a variable speed - variable pitch (VS-VP) control technology is usually adopted to improve speed and torque characteristics and to obtain the optimal energy, which means to obtain the maximum power at low wind speed and the rated power at high wind speed. The power generated by an individual blade of the wind turbine changes considerably during rotation due for the change of wind speed in vertical direction, which decreases the angles of attack in the low blade positions and which leads to a reducing the generated energy. In the paper basing on BEM theory modification for none-homogenously fluid field and an optimization procedure is obtained an individual variable pitch control law as function of wind speed values and blades positions.

Self-Tuning Fuzzy Adaptive PID Pitch Control of Wind Power Systems

2013 ◽  
Vol 394 ◽  
pp. 404-409
Author(s):  
Feng Zhang ◽  
Ye Hui Lu ◽  
Feng Qiao ◽  
Chong Chong Bai
Keyword(s):  
Wind Speed ◽  
Wind Power ◽  
Control Strategy ◽  
Pid Control ◽  
Variable Pitch ◽  
Pitch Control ◽  
Self Tuning ◽  
Wind Power System ◽  
Variable Pitch Control ◽  
Fuzzy Adaptive

A large variable speed constant frequency (VSCF) wind power system usually adopts the variable pitch control technology to ensure the output power is steady to ensure the safety of the wind power system above the rated wind speed. But the strong nonlinear and large moment of inertia of wind turbine result in the difficulty of variable pitch control, both simple fuzzy control and conventional PID control can not achieve a good control effect. Concerning this issue, variable pitch control algorithm is proposed based on self-tuning fuzzy adaptive PID control strategy. According to the dynamic model of VSCF, a simulation model of wind turbine control system is built in this paper with Matlab/Simulink. When the wind speed is random variable above the rated speed, the simulation results show that the proposed control strategy can keep the output power of the system around the rated power.

scholarly journals Reinforcement-Based Robust Variable Pitch Control of Wind Turbines

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 20493-20502 ◽  
Author(s):  
Peng Chen ◽  
Dezhi Han ◽  
Fuxiao Tan ◽  
Jun Wang
Keyword(s):  
Wind Turbines ◽  
Variable Pitch ◽  
Pitch Control ◽  
Variable Pitch Control

Design and Test of a Vertical-Axis Wind Turbine with Pitch Control

2012 ◽  
Vol 225 ◽  
pp. 338-343 ◽  
Author(s):  
J.J. Miau ◽  
S.Y. Liang ◽  
R.M. Yu ◽  
C.C. Hu ◽  
T.S. Leu ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Aerodynamic Characteristics ◽  
Vertical Axis Wind Turbine ◽  
Variable Pitch ◽  
Pitch Control ◽  
Remarkable Improvement ◽  
The One ◽  
Variable Pitch Control ◽  
Starting Torque

The concept of pitch control has been implemented in the design of a small vertical-axis wind turbine. Benefits gained can be shown by the experimental and numerical results presented in this paper. As found, the method of variable pitch control outperforms the one of fixed pitch control. The present results show that the former can make remarkable improvement on the starting torque as well as the aerodynamic characteristics at low tip speed ratios.

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