A5006497680- Wind Energy Research and Development
- Wave and Wind Energy Systems
- Wind Turbine Control Systems
- Fluid Dynamics and Vibration Analysis
- Real-time simulation and control systems
- Aerospace Engineering and Energy Systems
- Advanced Numerical Methods in Computational Mathematics
- Aeroelasticity and Vibration Control
- Fluid Dynamics and Turbulent Flows
- Vibration and Dynamic Analysis
- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Cavitation Phenomena in Pumps
- Meteorological Phenomena and Simulations
- Oceanographic and Atmospheric Processes
- Oil and Gas Production Techniques
- Aerodynamics and Acoustics in Jet Flows
- Plasma and Flow Control in Aerodynamics
- Hydraulic and Pneumatic Systems
- Physics and Engineering Research Articles
- Construction Project Management and Performance
- Advanced Control Systems Optimization
National Renewable Energy Laboratory
2017-2024
Siemens (Denmark)
2024
University of Colorado Boulder
2019-2023
University of Colorado System
2019
Abstract. This paper describes the development of a new reference controller framework for fixed and floating offshore wind turbines that greatly facilitates tuning represents standard industry practices. The turbine controllers are most commonly cited in literature have been developed to work with specific turbines. Although these provided control functionalities, they often not easy modify use on other turbines, so it has challenging researchers run representative, fully dynamic...
Abstract The National Renewable Energy Laboratory’s 5-MW wind turbine model is well established as an industry standard and often used a comparison model, or on which to build upon. Though effective, the legacy controller for uses simple algorithm that not up date with many standards. Additionally, research community has advanced into fast-paced development cycles, systems engineering tools such Wind-Plant Integrated System Design & Engineering Model (WISDEM ®) [1] are employed, greater...
Abstract Reference wind turbines (RWTs) that reflect the state-of-the-art of current energy technology are necessary in order to properly evaluate innovative methods turbine design and evaluation. The International Energy Agency (IEA) Wind Technology Collaboration Platform (TCP) Task 37 has recently developed a new RWT geared towards offshore floating-foundation applications: IEA 15 MW. model been implemented two aeroelastic codes, OpenFAST HAWC2, based on an underlying common ontology....
Abstract. This paper describes the development of a new reference controller framework for fixed and floating offshore wind turbines that greatly facilitates tuning represents standard industry practices. The turbine controllers are most commonly cited in literature have been developed to work with specific turbines. Although these provided control functionalities, they often not easy modify use on other turbines, so it has challenging researchers run representative, fully dynamic...
Abstract This work introduces automated wind turbine optimization techniques based on full aero‐servo‐elastic models and investigates the potential of trailing edge flaps to reduce levelized cost energy (LCOE) turbines. The Wind Energy with Integrated Servo‐control (WEIS) framework is improved conduct presented research. Novel methods for generic implementation tuning flap devices their controller are also introduced. Primary parameters optimized demonstrate maximum blade tip deflection...
Abstract. This work investigates the conceptual design and aeroservoelastic performance of land-based wind turbines whose blades can be transported on rail via controlled bending. The have a nameplate power 5 MW rotor diameter 206 m, they aim to represent next generation machines. Three upwind designs two downwind are presented, combining different goals together with conventional glass pultruded carbon fiber laminates in spar caps. One five blade is segmented serves as benchmark state art...
Within the rapidly growing wind energy sector, floating offshore turbines are expected to be fastest portion. This is largely driven by immense resources that mostly over deep water, where fixed-bottom concepts become cost-prohibitive. However, compared turbines, more dynamic and exhibit potential instabilities, which requires advanced control technologies ensure a safe efficient operation. Beyond their existing objectives of maximizing power production while minimizing structural loads,...
Abstract Designing a collective blade pitch controller for floating offshore wind turbines (FOWTs) poses unique challenges due to the interaction of with dynamics platform. The must also handle competing objectives power production performance and fatigue load management. Existing solutions either detune result slowed response, make use complicated tuning methods, or incorporate nacelle velocity feedback gain. With goal developing simple control method general FOWT researcher that is easily...
Abstract We present a framework for optimizing the control parameters of floating offshore wind turbines (FOWTs). The combines aeroelastic simulations with systems engineering model and software. In an example optimization framework, we minimize tower damage equivalent loading generator speed constraints. also study effect thrust-limiting quantify trade off between fatigue energy capture using set optimal controller designs. Finally, optimize four different FOWT models compare their dynamic...
Abstract This work presents a numerical framework to investigate distributed aerodynamic control devices for application in large wind turbines. Tool capabilities were extended facilitate multiple polar tables. The airfoil aerodynamics characteristics automatically determined, and blade-pitch, generator-torque, trailing-edge-flap controllers tuned in-the-loop according specific blade design. automated workflow allows analysis optimization of trailing-edge flaps, enabling codesign studies....
Abstract A versatile framework is introduced for determining optimal steady‐state operating points wind turbine control. The based on solving constrained optimization problems at fixed speeds and allows systematically studying required trade‐offs parameter sensitivities. It can be used as a basis many control approaches, example, to automatically compute schedules inputs, model linearization, or reference values tracking. Steady‐state simulation results are obtained using full nonlinear...
Abstract. This work investigates the conceptual design and aeroservoelastic performance of land-based wind turbines whose blades can be transported on rail via controlled bending. The have a nameplate power 5 MW rotor diameter 206 m, they aim to represent next generation machines. Three upwind designs two downwind are presented, combining different goals together with conventional glass pultruded carbon fiber laminates in spar caps. results show that flexing requires reduction flapwise...
Abstract An analytical method for assessing the controllability of floating offshore wind turbines (FOWTs) is presented in this work. Modern linear control theory principles are applied to linearized FOWT models establish quantifiable metrics determine advantageous, or disadvantageous, differences turbine from a controls perspective. One use such metric consider amount work necessary move back an equilibrium point. We simplified point-mass model demonstrate idea. The idea then translated DTU...
Abstract As rotor designs have grown in size and flexibility, new design challenges arisen that could benefit from novel control strategies. Leading edge microspoilers (LEMS) been shown to effectively reduce forces on airfoils by inducing stall at lower angles of attack. This paper investigates how LEMS can be used blade loading large, flexible, downwind rotors during design-limiting load cases. During shutdown turbulent flows near cutout speed, the tip deflection spikes toward tower over...