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Role of Pumped Storage Hydro Resources in Electricity Markets and System Operation: Preprint

http://www.nrel.gov/docs/fy13osti/58655.pdf

To be presented at HydroVision International; Denver, Colorado; July 23–26, 2013

Preliminary Verification and Validation of WEC-Sim, an Open-Source Wave Energy Converter Design Tool: Preprint

http://www.nrel.gov/docs/fy14osti/61531.pdf

To be presented at the 33rd International Conference on Ocean, Offshore and Arctic Engineering; San Francisco, California; June 8-13, 2014

Implementing Nonlinear Buoyancy and Excitation Forces in the WEC-Sim Wave Energy Converter Modeling Tool: Preprint

http://www.nrel.gov/docs/fy14osti/61529.pdf

Wave energy converters (WECs) are commonly designed and analyzed using numerical models that combine multibody dynamics with hydrodynamic models based on the Cummins equation and linearized hydrodynamic coefficients. These modeling methods are attractive...

Experimental Wave Tank Test for Reference Model 3 Floating-Point Absorber Wave Energy Converter Project

http://www.nrel.gov/docs/fy15osti/62951.pdf

The U.S. Department of Energy established a reference model project to benchmark a set of marine and hydrokinetic technologies including current (tidal, open-ocean, and river) turbines and wave energy converters. The objectives of the project were to...

Preliminary Analysis of an Oscillating Surge Wave Energy Converter with Controlled Geometry: Preprint

http://www.nrel.gov/docs/fy15osti/64545.pdf

To be presented at the European Wave and Tidal Energy Conference; Nantes, France; September 6‒11, 2015

WindPACT Turbine Design Scaling Studies: Technical Area 4…Balance-of-Station Cost

http://www.nrel.gov/docs/fy01osti/29950.pdf

This report discusses balance-of-station costs, which includes the electrical power collector system, wind turbine foundations, communications and controls, meteorological equipment, access roadways, crane pads, and the maintenance building.

Northern Power Systems WindPACT Drive Train Alternative Design Study Report: April 12, 2001 to January 31, 2005

http://www.nrel.gov/docs/fy05osti/35524.pdf

The National Renewable Energy Laboratory (NREL) Wind Partnerships for Advanced Component Technologies (WindPACT) project seeks to advance wind turbine technology by exploring innovative concepts in drivetrain design.

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

http://www.nrel.gov/docs/fy06osti/32495.pdf

This report presents the results of the turbine rotor study completed by Global Energy Concepts (GEC) as part of the U.S. Department of Energy's WindPACT (Wind Partnership for Advanced Component Technologies) project.

WindPACT Rotor Design Study: Hybrid Tower Design; Period of Performance: 29 June 2000 -- 28 February 2004

http://www.nrel.gov/docs/fy04osti/35546.pdf

The WindPACT Rotor Design Study was modified to include a study of a hybrid tower to determine the technical and economic feasibility of such a design.

WindPACT Turbine Design Scaling Studies Technical Area 3„Self-Erecting Tower and Nacelle Feasibility

http://www.nrel.gov/docs/fy01osti/29493.pdf

NREL has implemented the WindPACT program to explore advanced technologies for improving the reliability and cost-effectiveness of wind energy technology. Global Energy Concepts prepared this report on self-erecting towers as part of the WindPACT pr...