Individual Pitch Control for Wind Turbine Load Reduction Enhanced With Inter-Turbine Wake Modelling

2011 ◽  
Author(s):  
Zhongzhou Yang ◽  
Yaoyu Li ◽  
John E. Seem
Keyword(s):  
Wind Turbine ◽  
State Space ◽  
Wind Profile ◽  
State Space Models ◽  
Load Reduction ◽  
Pitch Control ◽  
Wake Interaction ◽  
Wake Model ◽  
Individual Pitch Control ◽  
Turbine Wake

Individual pitch control (IPC) for wind turbine load reduction in Region 3 operation is improved when wake interaction is considered. The Larsen wake model is applied for composing the rotor wind profile for downstream turbines under wake interaction. The wind profile of the turbine wake was generated by modifying the NREL’s TurbSim codes. The state-space models of wind turbine were obtained via linearization of wind turbine model available in the NREL’s aeroelastic design code FAST. In particular, in order to obtain more accurate state-space models, equivalent circular wind profile was generated so as to better determine the local pitch reference. Based on such models, IPC controllers were designed following the disturbance accommodating control (DAC) and periodic control framework. The simulation results showed that the turbine loads can be further reduced using the switching control scheme based on wake modeling, as compared with the generic DAC without wake consideration.

Individual Pitch Control for Wind Turbine Load Reduction Including Wake Modeling

2010 ◽  
Author(s):  
Zhongzhou Yang ◽  
Yaoyu Li ◽  
John E. Seem
Keyword(s):  
Wind Turbine ◽  
Wind Profile ◽  
Load Reduction ◽  
Pitch Control ◽  
Wind Speeds ◽  
Speed Regulation ◽  
Wake Interaction ◽  
Wake Model ◽  
Asymmetric Load ◽  
Individual Pitch Control

Individual Pitch Control (IPC) can greatly benefit the load reduction for wind turbine above the rated power. This research investigates advanced IPC schemes with the wake interaction included. The Jensen wake model is applied for composing the rotor wind profile for downstream turbines under wake interaction, and a switched control strategy is thus developed based on the composite wind profile. The wind profile was generated by modifying the TurbSim codes. The state-space models of wind turbine were generated via FAST. Based on such model, individual pitch controllers were designed following the disturbance accommodating control (DAC) framework for regions of different wind speeds. Simulation results showed that the proposed switching DAC can better reject the wake induced asymmetric load than the single DAC, in addition to the rejection of wind shear disturbance, hub-height wind disturbance. The improvement was observed for rotor speed regulation and reduction in steady loads and fatigue loads in 2P of the tower-base yaw moment.

scholarly journals Feedback-feedforward individual pitch control for wind turbine load reduction

2009 ◽  
Vol 19 (1) ◽  
pp. 72-91 ◽  
Author(s):  
K. Selvam ◽  
S. Kanev ◽  
J. W. van Wingerden ◽  
T. van Engelen ◽  
M. Verhaegen
Keyword(s):  
Wind Turbine ◽  
Load Reduction ◽  
Pitch Control ◽  
Individual Pitch Control

scholarly journals Implementation and Validation of an Advanced Wind Energy Controller in Aero-Servo-Elastic Simulations Using the Lifting Line Free Vortex Wake Model

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 783 ◽  
Author(s):  
Sebastian Perez-Becker ◽  
David Marten ◽  
Christian Navid Nayeri ◽  
Christian Oliver Paschereit
Keyword(s):  
Wind Turbine ◽  
Open Source ◽  
Control Strategy ◽  
Vortex Wake ◽  
Load Reduction ◽  
Free Vortex ◽  
Pitch Control ◽  
The Individual ◽  
Individual Pitch Control ◽  
Lifting Line

Accurate and reproducible aeroelastic load calculations are indispensable for designing modern multi-MW wind turbines. They are also essential for assessing the load reduction capabilities of advanced wind turbine control strategies. In this paper, we contribute to this topic by introducing the TUB Controller, an advanced open-source wind turbine controller capable of performing full load calculations. It is compatible with the aeroelastic software QBlade, which features a lifting line free vortex wake aerodynamic model. The paper describes in detail the controller and includes a validation study against an established open-source controller from the literature. Both controllers show comparable performance with our chosen metrics. Furthermore, we analyze the advanced load reduction capabilities of the individual pitch control strategy included in the TUB Controller. Turbulent wind simulations with the DTU 10 MW Reference Wind Turbine featuring the individual pitch control strategy show a decrease in the out-of-plane and torsional blade root bending moment fatigue loads of 14% and 9.4% respectively compared to a baseline controller.

Wind turbine load reduction based on 2DoF robust individual pitch control

2021 ◽  
Author(s):  
Shize Tang ◽  
De Tian ◽  
Xiaoxuan Wu ◽  
Mingyue Huang ◽  
Ying Deng
Keyword(s):  
Wind Turbine ◽  
Load Reduction ◽  
Pitch Control ◽  
Individual Pitch Control

Individual Pitch Control for Wind Turbine Load Reduction Including Wake Modeling

2011 ◽  
Vol 35 (6) ◽  
pp. 715-738 ◽  
Author(s):  
Zhongzhou Yang ◽  
Yaoyu Li ◽  
John E. Seem
Keyword(s):  
Wind Turbine ◽  
Load Reduction ◽  
Pitch Control ◽  
Individual Pitch Control ◽  
Wake Modeling
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