WindPACT Turbine Rotor Design Study: June 2000--June 2002 (Revised)

Malcolm, David J.; Hansen, A. C.

doi:10.2172/15000964

Cited by 50 publications

(27 citation statements)

References 11 publications

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“…A three‐bladed upwind reference WindPACT 1.5‐MW onshore wind turbine model developed by the National Renewable Energy Laboratory (NREL) is considered as a reference system based on the FAST code. The model is built based on an actual commercial wind turbine and was used most extensively in the WindPACT program for studies of wind turbine technology innovations.…”

Section: Wind Turbine Modeling and Controlmentioning

confidence: 99%

“…In the constant power strategy, the generator power is kept constant by varying the generator torque inversely proportional to the generator speed . In the second strategy, the generator torque is held constant, while the rotor/generator speed is regulated to the desired rated value by modifying the blade pitch angles . In this paper, the constant generator torque approach is used as an example; the generator speed is then controlled by a PI controller.…”

Section: Wind Turbine Modeling and Controlmentioning

confidence: 99%

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Structural load mitigation control for wind turbines: A new performance measure

2020

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Summary Structural loads of wind turbines are becoming critical because of the growing size of wind turbines in combination with the required dynamic output demands. Wind turbine tower and blades are therefore affected by structural loads. To mitigate the loads while maintaining other desired conditions such as the optimization of power generated or the regulation of rotor speed, advanced control schemes have been developed during the last decade. However, conflict and trade‐off between structural load reduction capacity of the controllers and other goals arise; when trying to reduce the structural loads, the power production or regulation performance may be also reduced. Suitable measures are needed when designing controllers to evaluate the control performance with respect to the conflicting control goals. Existing measures for structural loads only consider the loads without referring to the relationship between loads and other control performance aspects. In this contribution, the conflicts are clearly defined and expressed to evaluate the effectiveness of control methods by introducing novel measures. New measures considering structural loads, power production, and regulation to prove the control performance and to formulate criteria for controller design are proposed. The proposed measures allow graphical illustration and numerical criteria describing conflicting control goals and the relationship between goals. Two control approaches for wind turbines, PI and observer‐based state feedback, are defined and used to illustrate and to compare the newly introduced measures. The results are obtained by simulation using Fatigue, Aerodynamics, Structures, and Turbulence (FAST) tool, developed by the National Renewable Energy Laboratory (NREL), USA.

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Section: Wind Turbine Modeling and Controlmentioning

confidence: 99%

Section: Wind Turbine Modeling and Controlmentioning

confidence: 99%

Structural load mitigation control for wind turbines: A new performance measure

2020

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“…Cut-out wind speed is 27.6 m s -1 . Details of the turbine are given by Poore [5] and Malcom [6]. The turbine was simulated in the aeroelastic code FAST [7], forced by 10-minute-long, turbulent wind fields from TurbSim [8].…”

Section: Data Setsmentioning

confidence: 99%

Accounting for the effect of turbulence on wind turbine power curves

Clifton

Wagner

2014

J. Phys.: Conf. Ser.

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“…Conversely, a 3 dB reduction in aerodynamic noise through design changes would allow for a 15% increase in turbine rotational speed. When coupled with blade structural design improvements, this increase in rotational speed can reduce system loads and enable lighter, cheaper rotors and drive trains [13].…”

Section: Airfoil Trailing Edge Noisementioning

confidence: 99%

Survey of techniques for reduction of wind turbine blade trailing edge noise.

Barone¹

2011

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Aerodynamic noise from wind turbine rotors leads to constraints in both rotor design and turbine siting. The primary source of aerodynamic noise on wind turbine rotors is the interaction of turbulent boundary layers on the blades with the blade trailing edges. This report surveys concepts that have been proposed for trailing edge noise reduction, with emphasis on concepts that have been tested at either sub-scale or full-scale. These concepts include trailing edge serrations, low-noise airfoil designs, trailing edge brushes, and porous trailing edges. The demonstrated noise reductions of these concepts are cited, along with their impacts on aerodynamic performance. An assessment is made of future research opportunities in trailing edge noise reduction for wind turbine rotors.3 4

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WindPACT Turbine Rotor Design Study: June 2000--June 2002 (Revised)

Cited by 50 publications

References 11 publications

Structural load mitigation control for wind turbines: A new performance measure

Structural load mitigation control for wind turbines: A new performance measure

Accounting for the effect of turbulence on wind turbine power curves

Survey of techniques for reduction of wind turbine blade trailing edge noise.

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