Lee Jay Fingersh
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View article: Upwind vs downwind: Loads and acoustics of a 1.5 MW wind turbine
Upwind vs downwind: Loads and acoustics of a 1.5 MW wind turbine Open
This paper discusses the motivation, preparation, risk mitigation, execution, and results of a full-scale experiment where the rotor of a 1.5 MW wind turbine was operated in a downwind configuration. The experiment took place at the Nation…
View article: Comparison of Loads and Aeroacoustics Between Upwind and Downwind Wind Turbine Rotors
Comparison of Loads and Aeroacoustics Between Upwind and Downwind Wind Turbine Rotors Open
This presentation discusses the motivation, preparation, risk mitigation, execution, and results of a full-scale experiment where the rotor of a 1.5 megawatt wind turbine was operated in a downwind configuration. The experiment took place …
View article: Optimizing Grid Regulation With Gravity Storage Systems: A Comparative Analysis With Different Motor Inertias: Preprint
Optimizing Grid Regulation With Gravity Storage Systems: A Comparative Analysis With Different Motor Inertias: Preprint Open
The integration of renewable energy sources into power grids necessitates solutions for grid support and stability during fluctuations in electricity generation and demand. Gravity energy storage systems (GESS) are emerging as a promising …
View article: Optimizing Grid Regulation with Gravity Energy Storage Systems: A Comparative Analysis with Different Motor Inertias
Optimizing Grid Regulation with Gravity Energy Storage Systems: A Comparative Analysis with Different Motor Inertias Open
The integration of renewable energy sources into power grids necessitates solutions for grid support and stability during fluctuations in electricity generation and demand. Gravity energy storage systems (GESS) are emerging as a promising …
View article: Wind turbine tower for storing hydrogen and energy
Wind turbine tower for storing hydrogen and energy Open
A wind turbine tower assembly for storing compressed gas such as hydrogen. The tower assembly includes a wind turbine having a rotor, a generator driven by the rotor, and a nacelle housing the generator. The tower assembly includes a found…
View article: Parked aeroelastic field rotor response for a 20% scaled demonstrator of a 13‐MW downwind turbine
Parked aeroelastic field rotor response for a 20% scaled demonstrator of a 13‐MW downwind turbine Open
Aeroelastic parked testing of a unique downwind two‐bladed subscale rotor was completed to characterize the response of an extreme‐scale 13‐MW turbine in high‐wind parked conditions. A 20% geometric scaling was used resulting in scaled 20‐…
View article: Collaborative TPL Assessment of Wave Energy Converters and Farms
Collaborative TPL Assessment of Wave Energy Converters and Farms Open
The Technology Performance Level (TPL) assessment is a holistic methodology to assess a wave energy converter (WEC) technology’s ability to achieve [continental grid] market competitiveness and acceptability via criteria-based consideratio…
View article: Design and Testing of a Scaled Demonstrator Turbine at the National Wind Technology Center
Design and Testing of a Scaled Demonstrator Turbine at the National Wind Technology Center Open
This paper discusses the design, manufacturing, and planned testing of a scaled demonstrator turbine as part of the Segmented Ultralight Morphing Rotor (SUMR) project funded by the Advanced Project Research Agency - Energy (ARPA-E). The sc…
View article: Additive Manufacturing: A New Paradigm for the Next Generation of High-Power-Density Direct-Drive Electric Generators: Preprint
Additive Manufacturing: A New Paradigm for the Next Generation of High-Power-Density Direct-Drive Electric Generators: Preprint Open
In recent years, there has been a growing demand for high-power-density direct-drive generators in the wind industry owing to their high reliability, torque per-unit volume, and conversion efficiencies. However, direct-drive wind turbine g…
View article: Methodology to Calculate the ACE and HPQ Metrics Used in the Wave Energy Prize
Methodology to Calculate the ACE and HPQ Metrics Used in the Wave Energy Prize Open
The U.S. Department of Energy's Wave Energy Prize Competition encouraged the development of innovative deep-water wave energy conversion technologies that at least doubled device performance above the 2014 state of the art. Because leveliz…
View article: Structural Optimization of a Direct-Drive Wind Turbine Generator Inspired by Additive Manufacturing
Structural Optimization of a Direct-Drive Wind Turbine Generator Inspired by Additive Manufacturing Open
This study explores the structural freedom and design opportunities of additive manufacturing for a 5-MW direct-drive generator for a wind turbine and compares it to more traditional spoke-arm designs using NREL's GeneratorSE. The work foc…
View article: Testing State-Space Controls for the Controls Advanced Research Turbine: Preprint
Testing State-Space Controls for the Controls Advanced Research Turbine: Preprint Open
Control can improve wind turbine performance by enhancing energy capture and reducing dynamic loads. At the National Renewable Energy Laboratory, we are implementing and testing state-space controls on the Controls Advanced Research Turbin…