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Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Lattice Tower Design of Offshore Wind Turbine Support Structures.  

E-Print Network (OSTI)

??Optimal design of support structure including foundation and turbine tower is among the most critical challenges for offshore wind turbine. With development of offshore wind… (more)

Gong, W.

2011-01-01T23:59:59.000Z

2

Structural And Economic Optimisation Of Bottom-Mounted Offshore Wind Energy Converters  

E-Print Network (OSTI)

A general overview is presented of the Opti-OWECS project. In several fields, support structure design, installation of the offshore wind energy converters, operation and maintenance, dynamics of the entire offshore wind energy converter, structural reliability considerations, etc., the study demonstrated new propositions which will contribute significantly to a mature offshore wind energy technology.

M. Kühn; W. A. A. M. Bierbooms; G.J.W. van Bussel; M. C. Ferguson; B. Göransson; T.T. Cockerill; R. Harrison; L.A. Harland; J. H. Vugts; R. Wiecherink; Kvaerner Turbin Ab

1999-01-01T23:59:59.000Z

3

Offshore Wind Research (Fact Sheet)  

SciTech Connect

This 2-page fact sheet describes NREL's offshore wind research and development efforts and capabilities. The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: (1) Developing offshore design tools and methods; (2) Collaborating with international partners; (3) Testing offshore systems and developing standards; (4) Conducting economic analyses; (5) Characterizing offshore wind resources; and (6) Identifying and mitigating offshore wind grid integration challenges and barriers. NREL has developed and maintains a robust, open-source, modular computer-aided engineering (CAE) tool, known as FAST. FAST's state-of-the-art capabilities provide full dynamic system simulation for a range of offshore wind systems. It models the coupled aerodynamic, hydrodynamic, control system, and structural response of offshore wind systems to support the development of innovative wind technologies that are reliable and cost effective. FAST also provides dynamic models of wind turbines on offshore fixed-bottom systems for shallow and transitional depths and floating-platform systems in deep water, thus enabling design innovation and risk reduction and facilitating higher performance designs that will meet DOE's cost of energy, reliability, and deployment objectives.

2011-10-01T23:59:59.000Z

4

Offshore Wind Research (Fact Sheet)  

DOE Green Energy (OSTI)

This 2-page fact sheet describes NREL's offshore wind research and development efforts and capabilities. The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: (1) Developing offshore design tools and methods; (2) Collaborating with international partners; (3) Testing offshore systems and developing standards; (4) Conducting economic analyses; (5) Characterizing offshore wind resources; and (6) Identifying and mitigating offshore wind grid integration challenges and barriers. NREL has developed and maintains a robust, open-source, modular computer-aided engineering (CAE) tool, known as FAST. FAST's state-of-the-art capabilities provide full dynamic system simulation for a range of offshore wind systems. It models the coupled aerodynamic, hydrodynamic, control system, and structural response of offshore wind systems to support the development of innovative wind technologies that are reliable and cost effective. FAST also provides dynamic models of wind turbines on offshore fixed-bottom systems for shallow and transitional depths and floating-platform systems in deep water, thus enabling design innovation and risk reduction and facilitating higher performance designs that will meet DOE's cost of energy, reliability, and deployment objectives.

Not Available

2011-10-01T23:59:59.000Z

5

www.cesos.ntnu.no Author Centre for Ships and Ocean Structures Offshore Wind Turbine Operation  

E-Print Network (OSTI)

1 www.cesos.ntnu.no Author ­ Centre for Ships and Ocean Structures Offshore Wind Turbine Operation Structures Outline · Introduction · Wind Turbine Operational Conditions · Wind Turbine Operation under Atmospheric Icing · Wind Turbine Operation under Fault Condition · Conclusions www.cesos.ntnu.no M. Etemaddar

Nørvåg, Kjetil

6

Offshore Wind 101  

Wind Powering America (EERE)

visual impact and potential user conflict. Sorry. According to the Department of Energy's national renewable energy lab, the nation's potential offshore wind energy resource is...

7

NREL: Wind Research - Offshore Wind Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Offshore Wind Research Offshore Wind Research Photo of a European offshore wind farm. Early progress in European Offshore Wind Energy over the last decade provides a glimpse into the vast potential of the global offshore resource. For more than eight years, NREL has worked with the Department of Energy to become an international leader in offshore wind energy research. Capabilities NREL's offshore wind capabilities focus on critical areas that reflect the long-term needs of the offshore wind energy industry and the U.S. Department of Energy including: Offshore Design Tools and Methods Offshore Standards and Testing Energy Analysis of Offshore Systems Offshore Wind Resource Characterization Grid Integration of Offshore Wind Key Research NREL documented the status of offshore wind energy in the United States in

8

NREL: Wind Research - Offshore Wind Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Options Site Map Printable Version Offshore Standards and Testing NREL's Offshore Wind Testing Capabilities 35 years of wind turbine testing experience Custom high speed data...

9

Session: Offshore wind  

DOE Green Energy (OSTI)

This session at the Wind Energy and Birds/Bats workshop consisted of two presentations. Due to time constraints, a discussion period was not possible. The session addressed the current state of offshore wind energy development. The first presentation ''Monitoring Program and Results: Horns Rev and Nysted'' by Jette Gaarde summarized selected environmental studies conducted to date at operating offshore wind turbine projects in Denmark and lessons from other offshore wind developments in Europe. Wildlife impacts studies from the Danish sites focused on birds, fish, and mammals. The second presentation ''What has the U.S. Wind Industry Learned from the European Example'' by Bonnie Ram provided an update on current permit applications for offshore wind developments in the U.S. as well as lessons that may be drawn from the European experience.

Gaarde, Jette; Ram, Bonnie

2004-09-01T23:59:59.000Z

10

Session: Offshore wind  

SciTech Connect

This session at the Wind Energy and Birds/Bats workshop consisted of two presentations. Due to time constraints, a discussion period was not possible. The session addressed the current state of offshore wind energy development. The first presentation ''Monitoring Program and Results: Horns Rev and Nysted'' by Jette Gaarde summarized selected environmental studies conducted to date at operating offshore wind turbine projects in Denmark and lessons from other offshore wind developments in Europe. Wildlife impacts studies from the Danish sites focused on birds, fish, and mammals. The second presentation ''What has the U.S. Wind Industry Learned from the European Example'' by Bonnie Ram provided an update on current permit applications for offshore wind developments in the U.S. as well as lessons that may be drawn from the European experience.

Gaarde, Jette; Ram, Bonnie

2004-09-01T23:59:59.000Z

11

Blyth Offshore Wind Ltd | Open Energy Information  

Open Energy Info (EERE)

Blyth Offshore Wind Ltd Jump to: navigation, search Name Blyth Offshore Wind Ltd Place United Kingdom Sector Renewable Energy, Wind energy Product Blyth Offshore Wind Limited,...

12

Norfolk Offshore Wind NOW | Open Energy Information  

Open Energy Info (EERE)

Norfolk Offshore Wind NOW Jump to: navigation, search Name Norfolk Offshore Wind (NOW) Place United Kingdom Sector Wind energy Product Formed to develop the 100MW Cromer offshore...

13

Definition: Offshore Wind | Open Energy Information  

Open Energy Info (EERE)

Definition: Offshore Wind Jump to: navigation, search Dictionary.png Offshore Wind Wind turbine installations built near-shore or further offshore on coastlines for...

14

Structural health and prognostics management for offshore wind turbines : an initial roadmap.  

Science Conference Proceedings (OSTI)

Operations and maintenance costs for offshore wind plants are expected to be significantly higher than the current costs for onshore plants. One way in which these costs may be able to be reduced is through the use of a structural health and prognostic management system as part of a condition based maintenance paradigm with smart load management. To facilitate the creation of such a system a multiscale modeling approach has been developed to identify how the underlying physics of the system are affected by the presence of damage and how these changes manifest themselves in the operational response of a full turbine. The developed methodology was used to investigate the effects of a candidate blade damage feature, a trailing edge disbond, on a 5-MW offshore wind turbine and the measurements that demonstrated the highest sensitivity to the damage were the local pitching moments around the disbond. The multiscale method demonstrated that these changes were caused by a local decrease in the blade's torsional stiffness due to the disbond, which also resulted in changes in the blade's local strain field. Full turbine simulations were also used to demonstrate that derating the turbine power by as little as 5% could extend the fatigue life of a blade by as much as a factor of 3. The integration of the health monitoring information, conceptual repair cost versus damage size information, and this load management methodology provides an initial roadmap for reducing operations and maintenance costs for offshore wind farms while increasing turbine availability and overall profit.

Griffith, Daniel Todd; Resor, Brian Ray; White, Jonathan Randall; Paquette, Joshua A.; Yoder, Nathanael C. [ATA Engineering, San Diego, CA

2012-12-01T23:59:59.000Z

15

Energy from Offshore Wind: Preprint  

DOE Green Energy (OSTI)

This paper provides an overview of the nascent offshore wind energy industry including a status of the commercial offshore industry and the technologies that will be needed for full market development.

Musial, W.; Butterfield, S.; Ram, B.

2006-02-01T23:59:59.000Z

16

Offshore Wind Accelerator | Open Energy Information  

Open Energy Info (EERE)

Sector Wind energy Product Research and development initiative aimed at cutting the cost of offshore wind energy. References Offshore Wind Accelerator1 LinkedIn Connections...

17

NREL: Wind Research - Offshore Wind Resource Characterization  

NLE Websites -- All DOE Office Websites (Extended Search)

Offshore Wind Resource Characterization Offshore Wind Resource Characterization Map of the United States, showing the wind potential of offshore areas across the country. Enlarge image US offshore wind speed estimates at 90-m height NREL scientists and engineers are leading efforts in resource mapping, remote sensor measurement and development, and forecasting that are essential for the development of offshore wind. Resource Mapping For more than 15 years, NREL's meteorologists, engineers, and Geographic Information System experts have led the production of wind resource characterization maps and reports used by policy makers, private industry, and other government organizations to inform and accelerate the development of wind energy in the United States. Offshore wind resource data and mapping has strategic uses. As with terrestrial developments, traditional

18

NREL GIS Data: Global Offshore Wind GIS data for offshore wind...  

Open Energy Info (EERE)

Global Offshore Wind GIS data for offshore wind speed (meterssecond).  Specified to Exclusive Economic Zones (EEZ).

Wind resource based on NOAA blended sea winds and...

19

Offshore Code Comparison Collaboration Continuation (OC4), Phase I - Results of Coupled Simulations of an Offshore Wind Turbine with Jacket Support Structure: Preprint  

DOE Green Energy (OSTI)

This paper presents the results of the IEA Wind Task 30, Offshore Code Comparison Collaboration Continuation Project - Phase 1.

Popko, W.; Vorpahl, F.; Zuga, A.; Kohlmeier, M.; Jonkman, J.; Robertson, A.; Larsen, T. J.; Yde, A.; Saetertro, K.; Okstad, K. M.; Nichols, J.; Nygaard, T. A.; Gao, Z.; Manolas, D.; Kim, K.; Yu, Q.; Shi, W.; Park, H.; Vasquez-Rojas, A.

2012-03-01T23:59:59.000Z

20

Offshore Wind Potential Tables  

Wind Powering America (EERE)

Offshore wind resource by state and wind speed interval within 50 nm of shore. Offshore wind resource by state and wind speed interval within 50 nm of shore. Wind Speed at 90 m (m/s) 7.0 - 7.5 7.5 - 8.0 8.0 - 8.5 8.5 - 9.0 9.0 - 9.5 9.5 - 10.0 >10.0 Total >7.0 State Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) California 11,439 (57,195) 24,864 (124,318) 23,059 (115,296) 22,852 (114,258) 13,185 (65,924) 15,231 (76,153) 6,926 (34,629) 117,555 (587,773) Connecticut 530 (2,652) 702 (3,508) 40 (201) 0 (0) 0 (0) 0 (0) 0 (0) 1,272 (6,360) Delaware 223 (1,116) 724 (3,618) 1,062 (5,310) 931 (4,657) 0 (0) 0 (0) 0 (0) 2,940 (14,701) Georgia 3,820 (19,102) 7,741 (38,706) 523 (2,617) 0 (0) 0 (0) 0 (0) 0 (0) 12,085 (60,425) Hawaii 18,873 (94,363) 42,298 (211,492)

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Offshore Wind Turbines and Their Installation  

Science Conference Proceedings (OSTI)

Offshore winds tend to be higher, more constant and not disturbed by rough terrain, so there is a large potential for utilizing wind energy near to the sea. Compared with the wind energy converters onland, wind turbine components offshore will subject ... Keywords: renewable energy, wind power generation, offshore wind turbines, offshore installation

Liwei Li; Jianxing Ren

2010-01-01T23:59:59.000Z

22

Proposed Evanston Offshore Wind Farm  

NLE Websites -- All DOE Office Websites (Extended Search)

Evanston Offshore Wind Farm Evanston Offshore Wind Farm August 1, 2011 Monday, August 1, 2011 Off Shore Wind Farm FAQ Document available from http://www.greenerevanston.org/ at the Renewable Energy Task Force tab Monday, August 1, 2011 City Manager Commits to City to sign onto Kyoto emissions reduction goals Wind Farm Timeline April 2006 Summer 2007 Fall 2008 February 2008 April 2010 March 2011 July 2011 Network for Evanston's Future proposes joint climate planning effort CGE Formed and Renewable Energy Task Force formed - Wind farm concept begun ECAP passed by City Council with 1st version of proposed Offshore Wind Farm included Offshore Wind Farm RFI unanimously passed by City Council Mayor Tisdahl appointments Committee on the Wind Farm City Council

23

Offshore Wind Research (Fact Sheet), National Wind Technology Center (NWTC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Offshore Offshore Wind Research The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: * Developing offshore design tools and methods * Collaborating with international partners * Testing offshore systems and developing standards * Conducting economic analyses * Characterizing offshore wind resources * Identifying and mitigating offshore wind grid integration challenges and barriers NREL documented the status of offshore wind energy in the United

24

Accelerating Offshore Wind Development | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rooftop Solar Challenge NEUP Award Recipients NEUP Award Recipients 2011 Grants for Offshore Wind Power 2011 Grants for Offshore Wind Power 2011 Grants for Advanced...

25

OFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION  

E-Print Network (OSTI)

No complete mathematical model of offshore wind farm O&M costs has been found in the literature. Many studies expensive components of an offshore wind farm. Support structure, O&M, and wake models have been discussedOFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION C. N. Elkinton* , J. F

Massachusetts at Amherst, University of

26

Stakeholder Engagement and Outreach: Offshore 90-Meter Wind Maps and Wind  

Wind Powering America (EERE)

Offshore 90-Meter Wind Maps and Wind Resource Potential Offshore 90-Meter Wind Maps and Wind Resource Potential The Stakeholder Engagement and Outreach initiative provides 90-meter (m) height, high-resolution wind maps and estimates of the total offshore wind potential that would be possible from developing the available offshore areas. The offshore wind resource maps can be used as a guide to identify regions for commercial wind development. A map of the United States showing offshore wind resource. Washington offshore wind map. Oregon offshore wind map. California offshore wind map. Texas offshore wind map. Minnesota offshore wind map. Lousiana offshore wind map. Wisconsin offshore wind map. Michigan offshore wind map. Michigan offshore wind map. Illinois offshore wind map. Indiana offshore wind map. Ohio offshore wind map. Georgia offshore wind map. South Carolina offshore wind map. North Carolina offshore wind map. Virginia offshore wind map. Maryland offshore wind map. Pennsylvania offshore wind map. Delaware offshore wind map. New Jersey offshore wind map. New York offshore wind map. Maine offshore wind map. Massachusetts offshore wind map. Rhode Island offshore wind map. Connecticut offshore wind map. Hawaii offshore wind map. Delaware offshore wind map. New Hampshire offshore wind map.

27

Offshore Wind Power | Open Energy Information  

Open Energy Info (EERE)

Power Jump to: navigation, search Name Offshore Wind Power Place St Albans, United Kingdom Zip AL1 3AW Sector Wind energy Product Formed to develop offshore wind farms around the...

28

Offshore Ostsee Wind AG | Open Energy Information  

Open Energy Info (EERE)

Ostsee Wind AG Jump to: navigation, search Name Offshore Ostsee Wind AG Place Brgerende, Mecklenburg-Western Pomerania, Germany Zip 18211 Sector Wind energy Product Joint...

29

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc. ofMary, and Laura Parsons. Offshore Wind Energy. Washingto,Challenges for Floating Offshore Wind Turbines. Tech. no.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

30

2011 Grants for Offshore Wind Power | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Offshore Wind Power 2011 Grants for Offshore Wind Power 2011 Grants for Offshore Wind Power Addthis Browse By Topic TOPICS Energy Efficiency ---Home Energy Audits --Design &...

31

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc. ofand Laura Parsons. Offshore Wind Energy. Washingto, DC:Challenges for Floating Offshore Wind Turbines. Tech. no.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

32

OpenEI - offshore wind  

Open Energy Info (EERE)

/0 en Offshore Wind Resource /0 en Offshore Wind Resource http://en.openei.org/datasets/node/921 Global Wind Potential Supply Curves by Country, Class, and Depth (quantities in GW)

License
33

wind offshore | OpenEI  

Open Energy Info (EERE)

offshore offshore Dataset Summary Description This dataset presents summary information related to world wind energy. It is part of a supporting dataset for the book World On the Edge: How to Prevent Environmental and Economic Collapse by Lester R. Brown, available from the Earth Policy Institute. Source Earth Policy Institute Date Released January 12th, 2011 (3 years ago) Date Updated Unknown Keywords EU wind offshore Wind Power wind power capacity world Data application/vnd.ms-excel icon Excel spreadsheet, data on multiple tabs (xls, 114.7 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period through 2009 License License Open Data Commons Attribution License Comment "Reuse of our data is permitted. We merely ask that wherever it is listed, it be appropriately cited"

34

offshore wind | OpenEI  

Open Energy Info (EERE)

wind wind Dataset Summary Description Global Wind Potential Supply Curves by Country, Class, and Depth (quantities in GW) Source National Renewable Energy Laboratory Date Released July 12th, 2012 (2 years ago) Date Updated July 12th, 2012 (2 years ago) Keywords offshore resource offshore wind renewable energy potential Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon offshore_resource_100_vs2.xlsx (xlsx, 41.7 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote

35

Offshore Code Comparison Collaboration within IEA Wind Annex XXIII: Phase III Results Regarding Tripod Support Structure Modeling  

DOE Green Energy (OSTI)

Offshore wind turbines are designed and analyzed using comprehensive simulation codes. This paper describes the findings of code-to-code verification activities of the IEA Offshore Code Comparison Collaboration.

Nichols, J.; Camp, T.; Jonkman, J.; Butterfield, S.; Larsen, T.; Hansen, A.; Azcona, J.; Martinez, A.; Munduate, X.; Vorpahl, F.; Kleinhansl, S.; Kohlmeier, M.; Kossel, T.; Boker, C.; Kaufer, D.

2009-01-01T23:59:59.000Z

36

Definition: Offshore Wind | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Offshore Wind (Redirected from Offshore Wind) Jump to: navigation, search Dictionary.png Offshore Wind Wind turbine installations built near-shore or further offshore on coastlines for commercial electricity generation.[1] View on Wikipedia Wikipedia Definition View on Reegle Reegle Definition No reegle definition available Related Terms wind turbine, wind farm, near-shore, offshore References ↑ http://en.wikipedia.org/wiki/Offshore_wind_power Retrie LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ved from "http://en.openei.org/w/index.php?title=Definition:Offshore_Wind&oldid=586583" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

37

Accelerating Offshore Wind Development | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Accelerating Offshore Wind Development Accelerating Offshore Wind Development Accelerating Offshore Wind Development December 12, 2012 - 2:15pm Addthis Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs What does this project do? The 2012 investments support innovative offshore installations for commercial deployment by 2017. The 2011 grants were targeted at projects that aim to either improve the technology used for offshore wind generation or remove the market barriers to offshore wind generation. View the Full Map Today the Energy Department announced investments in seven offshore wind demonstration projects. These projects are part of a broader effort to launch an offshore wind industry in the United States, and support innovative offshore installations for commercial deployment by 2017.

38

Offshore Wind Energy Market Overview (Presentation)  

SciTech Connect

This presentation describes the current international market conditions regarding offshore wind, including the breakdown of installation costs, how to reduce costs, and the physical siting considerations considered when planning offshore wind construction. The presentation offers several examples of international existing and planned offshore wind farm sites and compares existing international offshore resources with U.S. resources. The presentation covers future offshore wind trends and cites some challenges that the United States must overcome before it will be able to fully develop offshore wind sites.

Baring-Gould, I.

2013-07-01T23:59:59.000Z

39

Overview of Offshore Wind Technology: Preprint  

SciTech Connect

This paper provides a short overview of some of the challenges facing the growth of offshore wind energy technology.

Butterfield, C. P.; Musial, W.; Jonkman, J.

2007-10-01T23:59:59.000Z

40

Hurricanes and Offshore Wind Farms  

Wind Powering America (EERE)

Hurricanes and Offshore Wind Farms Hurricanes and Offshore Wind Farms July 17, 2013 Man: Please continue to stand by. Today's conference will begin momentarily. Thank you. Coordinator: Welcome, and think you for standing by. At this time, all participants are in a listen only mode for the duration of today's call. Today's conference is being recorded. If you have any objections, you may disconnect at this time. Now I would like to turn the meeting over to Mr. Jonathan Bartlett. Sir you may begin. Jonathan Bartlett: Thank you. Good afternoon, this is Jonathan Bartlett. I'm speaking to you from the Department of Energy in Washington, D.C. Welcome everyone to the July Edition of the Wind Power in America webinar. This month we have two speakers, Joel Cline and Mark Powell will discuss the impacts of

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

NREL Software Aids Offshore Wind Turbine Designs (Fact Sheet)  

DOE Green Energy (OSTI)

NREL researchers are supporting offshore wind power development with computer models that allow detailed analyses of both fixed and floating offshore wind turbines. While existing computer-aided engineering (CAE) models can simulate the conditions and stresses that a land-based wind turbine experiences over its lifetime, offshore turbines require the additional considerations of variations in water depth, soil type, and wind and wave severity, which also necessitate the use of a variety of support-structure types. NREL's core wind CAE tool, FAST, models the additional effects of incident waves, sea currents, and the foundation dynamics of the support structures.

Not Available

2013-10-01T23:59:59.000Z

42

Design and Dynamic Modeling of the Support Structure for a 10 MW Offshore Wind Turbine.  

E-Print Network (OSTI)

?? This thesis presents two designs of tension-leg-platforms (TLP) support structures for the 10 MW reference wind turbine being developed by the Norwegian Research Centre… (more)

Crozier, Aina

2011-01-01T23:59:59.000Z

43

Offshore Wind Energy Update  

Wind Powering America (EERE)

wind farms are already operating in 10 countries. Almost 1,700 turbines are in the water. We're probably beyond 5,000 megawatts in nameplate right now and that's just going to...

44

NREL: Wind Research - Grid Integration of Offshore Wind  

NLE Websites -- All DOE Office Websites (Extended Search)

Grid Integration of Offshore Wind Grid Integration of Offshore Wind Photograph of a wind turbine in the ocean. Located about 10 kilometers off the coast of Arklow, Ireland, the Arklow Bank offshore wind park consists of seven GE Wind 3.6-MW wind turbines. Much can be learned from the existing land-based integration research for handling the variability and uncertainty of the wind resource. Integration and Transmission One comprehensive grid integration study is the Eastern Wind Integration and Transmission Study (EWITS), in which offshore wind scenarios were analyzed. Nearly 80 GW of offshore wind was studied in the highest penetration scenario. Specific offshore grid distribution and transmission solutions were identified, including cost estimates. With the Atlantic coast likely to lead the way in offshore wind power deployment, EWITS is a benchmark for

45

Cost of Offshore Wind Energy Charlene Nalubega  

E-Print Network (OSTI)

Cost of Offshore Wind Energy water as well as on land based wind farms. The specific offshore wind energy case under consideration kilowatt Hour will be determined. Wind Energy has been around for a very long time. It started as out

Mountziaris, T. J.

46

Galveston Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Farm Offshore Wind Farm Jump to: navigation, search Name Galveston Offshore Wind Farm Facility Galveston Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Wind Energy Systems Technology Developer Wind Energy Systems Technology Location Offshore from Galveston TX Coordinates 29.161°, -94.797° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.161,"lon":-94.797,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

47

New Structural-Dynamics Module for Offshore Multimember Substructures within the Wind Turbine Computer-Aided Engineering Tool FAST: Preprint  

DOE Green Energy (OSTI)

FAST, developed by the National Renewable Energy Laboratory (NREL), is a computer-aided engineering (CAE) tool for aero-hydro-servo-elastic analysis of land-based and offshore wind turbines. This paper discusses recent upgrades made to FAST to enable loads simulations of offshore wind turbines with fixed-bottom, multimember support structures (e.g., jackets and tripods, which are commonly used in transitional-depth waters). The main theory and strategies for the implementation of the multimember substructure dynamics module (SubDyn) within the new FAST modularization framework are introduced. SubDyn relies on two main engineering schematizations: 1) a linear frame finite-element beam (LFEB) model and 2) a dynamics system reduction via Craig-Bampton's method. A jacket support structure and an offshore system consisting of a turbine atop a jacket substructure were simulated to test the SubDyn module and to preliminarily assess results against results from a commercial finite-element code.

Song, H.; Damiani, R.; Robertson, A.; Jonkman, J.

2013-08-01T23:59:59.000Z

48

Obama Administration Hosts Great Lakes Offshore Wind Workshop...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hosts Great Lakes Offshore Wind Workshop in Chicago with Great Lakes Wind Collaborative Obama Administration Hosts Great Lakes Offshore Wind Workshop in Chicago with Great Lakes...

49

Strengthening America's Energy Security with Offshore Wind (Fact Sheet) (Revised)  

DOE Green Energy (OSTI)

This fact sheet provides a brief description of offshore wind energy development in the U.S. and DOE's Wind Program offshore wind R&D activities.

Not Available

2012-04-01T23:59:59.000Z

50

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

of European Wind Energy Conference 2009, Marseille, France.Enabling New Markets for Offshore Wind Energy." Proc.Parsons. Offshore Wind Energy. Washingto, DC: Environmental

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

51

European Wind Atlas: Offshore | Open Energy Information  

Open Energy Info (EERE)

European Wind Atlas: Offshore European Wind Atlas: Offshore Jump to: navigation, search Tool Summary LAUNCH TOOL Name: European Wind Atlas: Offshore Focus Area: Renewable Energy Topics: Potentials & Scenarios Website: www.windatlas.dk/Europe/oceanmap.html Equivalent URI: cleanenergysolutions.org/content/european-wind-atlas-offshore,http://c Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This is a European offshore wind resources over open sea map developed by Riso National Laboratory in 1989. The map shows the so-called generalised wind climate over Europe, also sometimes referred to as the regional wind climate or simply the wind atlas. In such a map, the influences of local topography have been removed and only the variations on the large scale are

52

INFOGRAPHIC: Offshore Wind Outlook | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Offshore Wind Outlook Offshore Wind Outlook INFOGRAPHIC: Offshore Wind Outlook December 12, 2012 - 2:15pm Addthis According to a new report commissioned by the Energy Department, a U.S. offshore wind industry that takes advantage of this abundant domestic resource could support up to 200,000 manufacturing, construction, operation and supply chain jobs across the country and drive over $70 billion in annual investments by 2030. Infographic by Sarah Gerrity. For more details, check out: New Reports Chart Offshore Wind’s Path Forward. According to a new report commissioned by the Energy Department, a U.S. offshore wind industry that takes advantage of this abundant domestic

53

Tillamook Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Farm Offshore Wind Farm Jump to: navigation, search Name Tillamook Offshore Wind Farm Facility Tillamook Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Principle Power Developer Principle Power Location Offshore from Tillamook OR Coordinates 45.527°, -124.179° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.527,"lon":-124.179,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

54

Offshore Wind Turbines: Some Technical Challenges  

E-Print Network (OSTI)

1 Offshore Wind Turbines: Some Technical Challenges Prof. Guy Houlsby FREng Oxford University House engineers concerned with installation of offshore wind turbines. The author is Professor of Civil solved, a DTI and EPSRC-sponsored research programme on foundations for wind turbines will be briefly

Houlsby, Guy T.

55

Structure of Offshore Flow  

Science Conference Proceedings (OSTI)

The horizontal and vertical structure of the mean flow and turbulent fluxes are examined using aircraft observations taken near a barrier island on the east coast of the United States during offshore flow periods. The spatial structure is ...

Dean Vickers; L. Mahrt; Jielun Sun; Tim Crawford

2001-05-01T23:59:59.000Z

56

Offshore Wind in NY State (New York)  

Energy.gov (U.S. Department of Energy (DOE))

NYSERDA has expressed support for the development of offshore wind and committed funding to several publicly-available assessments that measure the potential energy benefits and environmental...

57

Wind tunnel model testing of offshore platforms.  

E-Print Network (OSTI)

?? The purpose of this thesis is to highlight some of the areas of interest when it comes to wind tunnel experimenting of offshore platforms… (more)

Abrahamsen, Ida Sinnes

2012-01-01T23:59:59.000Z

58

Offshore Wind Turbines Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine Addendum 2  

SciTech Connect

Additional modeling for offshore wind turbines, for proposed floating wind platforms to be deployed by University of Maine/DeepCwind.

Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

2011-03-01T23:59:59.000Z

59

Deepwater Offshore Wind Technology Research Requirements (Poster)  

DOE Green Energy (OSTI)

A poster presentation for AWEA's WindPower 2005 conference in Denver, Colorado, May 15-18, 2005 that provides an outline of the requirements for deepwater offshore wind technology development

Musial, W.

2005-05-01T23:59:59.000Z

60

Deepwater Offshore Wind Technology Research Requirements (Poster)  

SciTech Connect

A poster presentation for AWEA's WindPower 2005 conference in Denver, Colorado, May 15-18, 2005 that provides an outline of the requirements for deepwater offshore wind technology development

Musial, W.

2005-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

DOE Announces Webinars on Economic Impacts of Offshore Wind,...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Announces Webinars on Economic Impacts of Offshore Wind, Clean Energy Financing Programs, and More DOE Announces Webinars on Economic Impacts of Offshore Wind, Clean Energy...

62

Offshore Wind Resource | OpenEI  

Open Energy Info (EERE)

Offshore Wind Resource Offshore Wind Resource Dataset Summary Description Global Wind Potential Supply Curves by Country, Class, and Depth (quantities in GW) Source National Renewable Energy Laboratory Date Released July 12th, 2012 (2 years ago) Date Updated July 12th, 2012 (2 years ago) Keywords offshore resource offshore wind renewable energy potential Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon offshore_resource_100_vs2.xlsx (xlsx, 41.7 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access

63

Virginia Offshore Wind Development Authority (Virginia) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Virginia Offshore Wind Development Authority (Virginia) Virginia Offshore Wind Development Authority (Virginia) Virginia Offshore Wind Development Authority (Virginia) < Back Eligibility Commercial Construction Developer Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Systems Integrator Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State Virginia Program Type Industry Recruitment/Support Provider Virginia Offshore Wind Development Authority The Virginia Offshore Wind Development Authority is a public body, established for the purposes of facilitating, coordinating, and supporting the development, either by the Authority or by other qualified entities, of the offshore wind energy industry, offshore wind energy projects, and

64

Loads Analysis of Several Offshore Floating Wind Turbine Concepts  

SciTech Connect

This paper presents a comprehensive dynamic-response analysis of six offshore floating wind turbine concepts.

Robertson, A. N.; Jonkman, J. M.

2011-10-01T23:59:59.000Z

65

Offshore Wind Turbine Wakes Measured by Sodar  

Science Conference Proceedings (OSTI)

A ship-mounted sodar was used to measure wind turbine wakes in an offshore wind farm in Denmark. The wake magnitude and vertical extent were determined by measuring the wind speed profile behind an operating turbine, then shutting down the ...

R. J. Barthelmie; L. Folkerts; F. T. Ormel; P. Sanderhoff; P. J. Eecen; O. Stobbe; N. M. Nielsen

2003-04-01T23:59:59.000Z

66

Accelerating Offshore Wind Development | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Accelerating Offshore Wind Development Accelerating Offshore Wind Development Accelerating Offshore Wind Development Click on a project for more information. The Energy Department has selected seven projects that will accelerate the commercialization of innovative offshore wind technologies in the United States. Each project will receive up to $4 million from the Energy Department to complete the engineering, site evaluation, and planning phase of their project. Upon completion of this phase, the Energy Department will select the up to three of these projects to advance the follow-on design, fabrication, and deployment phases to achieve commercial operation by 2017. Each of the these projects will be eligible for up to $47 million in additional funding over four years, subject to Congressional appropriations. This map also includes 42

67

Large-Scale Offshore Wind Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Large-Scale Offshore Wind Power in the United States EXECUTIVE SUMMARY September 2010 NOTICE This report was prepared as an account of work sponsored by an agency of the United...

68

Engineering Challenges for Floating Offshore Wind Turbines  

SciTech Connect

The major objective of this paper is to survey the technical challenges that must be overcome to develop deepwater offshore wind energy technologies and to provide a framework from which the first-order economics can be assessed.

Butterfield, S.; Musial, W.; Jonkman, J.; Sclavounos, P.

2007-09-01T23:59:59.000Z

69

Offshore Wind Energy | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Offshore Wind Energy Jump to: navigation, search The Middelgrunden Wind Farm was established as a collaboration between Middelgrunden Wind Turbine Cooperative and Copenhagen Energy, each installing 10 2-MW Bonus wind turbines. The farm is located off the coast of Denmark, east of the northern tip of Amager. Photo from H.C. Sorensen, NREL 17856 Offshore wind energy is a clean, domestic, renewable resource that can help the United States meet its critical energy, environmental, and economic challenges. By generating electricity from offshore wind turbines, the nation can reduce its greenhouse gas emissions, diversify its energy supply, provide cost-competitive electricity to key coastal regions, and help revitalize key sectors of its economy, including manufacturing.

70

Strengthening America's Energy Security with Offshore Wind (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet describes the current state of the offshore wind industry in the United States and the offshore wind research and development activities conducted the U.S. Department of Energy Wind and Water Power Program.

Not Available

2012-02-01T23:59:59.000Z

71

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

Enabling New Markets for Offshore Wind Energy." Proc.of European Wind Energy Conference 2009, Marseille, France.and S. E. Sowby. Standardized Wind and Wave Environments for

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

72

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

to the support platform is the “NREL offshore 5- MW baselineOffshore wind turbine classification [3]. .. 3 Figure 1.2: Alternative platform

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

73

Comparison of API & IEC Standards for Offshore Wind Turbine Applications in the U.S. Atlantic Ocean: Phase II; March 9, 2009 - September 9, 2009  

DOE Green Energy (OSTI)

This report compares two design guidelines for offshore wind turbines: Recommended Practice for Planning, Designing, and Constructing Fixed Offshore Platform Structures and the International Electrotechnical Commission 61400-3 Design Requirements for Offshore Wind Turbines.

Jha, A.; Dolan, D.; Gur, T.; Soyoz, S.; Alpdogan, C.

2013-01-01T23:59:59.000Z

74

Structural Health Monitoring of Wind Turbine Blades  

Science Conference Proceedings (OSTI)

Presentation Title, Structural Health Monitoring of Wind Turbine Blades. Author(s) ... is mandatory for the cost-effective operation of an offshore wind power plant.

75

NREL: Wind Research - Shedding Light on Offshore Wind Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Shedding Light on Offshore Wind Resources March 22, 2013 View of the Chesapeake Bay light tower in the water. The Chesapeake Bay light tower is located approximately 13 miles from...

76

NREL: Wind Research - Milestone Cleared for Offshore Wind Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Milestone Cleared for Offshore Wind Energy Research Lease in Virginia March 25, 2013 The U.S. Department of the Interior's Bureau of Ocean Energy Management announced an important...

77

NREL: Wind Research - New England Offshore Wind Advances on Several...  

NLE Websites -- All DOE Office Websites (Extended Search)

Research Search More Search Options Site Map Printable Version New England Offshore Wind Advances on Several Fronts January 14, 2013 At the end of 2012, New England's first two...

78

Wind Resource Mapping for United States Offshore Areas  

DOE Green Energy (OSTI)

A poster for the WindPower 2006 conference showing offshore resource mapping efforts in the United States.

Elliott, D.; Schwartz, M.

2006-06-01T23:59:59.000Z

79

Global Offshore Wind Farms Database | Open Energy Information  

Open Energy Info (EERE)

Global Offshore Wind Farms Database Global Offshore Wind Farms Database Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Global Offshore Wind Farms Database Focus Area: Renewable Energy Topics: Deployment Data Website: www.4coffshore.com/offshorewind/ Equivalent URI: cleanenergysolutions.org/content/global-offshore-wind-farms-database,h Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance This online database and interactive map for global offshore wind development contains details on over 900 wind farms in 36 countries. The 4C Offshore Interactive Map provides an interactive map-based view of wind farm data, as well as wind farm-related news and career information. References Retrieved from "http://en.openei.org/w/index.php?title=Global_Offshore_Wind_Farms_Database&oldid=514428"

80

Planning and control of logistics for offshore wind farms  

Science Conference Proceedings (OSTI)

Construction and utilization of offshore wind farms will increase within the next years. So far the first German offshore wind farm was constructed and put into operation by "Alpha Ventus". Experiences illustrate that bad weather conditions are the main ... Keywords: MILP, installation scheduling, maritime logistics, offshore wind farm, supply chain

Bernd Scholz-Reiter; Michael Lütjen; Jens Heger; Anne Schweizer

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

An Update on the National Offshore Wind Strategy | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the National Offshore Wind Strategy December 17, 2012 - 11:27am Addthis Principle Power's wind float prototype in Portugal. The company was recently awarded an Energy Department...

82

Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development  

SciTech Connect

Deep C Wind, a consortium headed by the University of Maine will test the first U.S. offshore wind platforms in 2012. In advance of final siting and permitting of the test turbines off Monhegan Island, residents of the island off Maine require reassurance that the noise levels from the test turbines will not disturb them. Pacific Northwest National Laboratory, at the request of the University of Maine, and with the support of the U.S. Department of Energy Wind Program, modeled the acoustic output of the planned test turbines.

Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

2010-11-23T23:59:59.000Z

83

Offshore Wind Resource Global Wind Potential Supply Curves by...  

Open Energy Info (EERE)

Offshore Wind Resource Global Wind Potential Supply Curves by Country, Class, and Depth (quantities in GW)
2012-07-12T22:51:45Z 2012-07-13T20:49:20Z I am submitting data from...

84

Salazar, Chu Announce Major Offshore Wind Initiatives | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Major Offshore Wind Initiatives Major Offshore Wind Initiatives Salazar, Chu Announce Major Offshore Wind Initiatives February 7, 2011 - 12:00am Addthis NORFOLK, VA - Unveiling a coordinated strategic plan to accelerate the development of offshore wind energy, Secretary of the Interior Ken Salazar and Secretary of Energy Steven Chu today announced major steps forward in support of offshore wind energy in the United States, including new funding opportunities for up to $50.5 million for projects that support offshore wind energy deployment and several high priority Wind Energy Areas in the mid-Atlantic that will spur rapid, responsible development of this abundant renewable resource. Deployment of clean, renewable offshore wind energy will help meet the President's goal of generating 80 percent of the Nation's electricity from

85

Basic Integrative Models for Offshore Wind Turbine Systems  

E-Print Network (OSTI)

This research study developed basic dynamic models that can be used to accurately predict the response behavior of a near-shore wind turbine structure with monopile, suction caisson, or gravity-based foundation systems. The marine soil conditions were modeled using apparent fixity level, Randolph elastic continuum, and modified cone models. The offshore wind turbine structures were developed using a finite element formulation. A two-bladed 3.0 megawatt (MW) and a three-bladed 1.5 MW capacity wind turbine were studied using a variety of design load, and soil conditions scenarios. Aerodynamic thrust loads were estimated using the FAST Software developed by the U.S Department of Energy’s National Renewable Energy Laboratory (NREL). Hydrodynamic loads were estimated using Morison’s equation and the more recent Faltinsen Newman Vinje (FNV) theory. This research study addressed two of the important design constraints, specifically, the angle of the support structure at seafloor and the horizontal displacement at the hub elevation during dynamic loading. The simulation results show that the modified cone model is stiffer than the apparent fixity level and Randolph elastic continuum models. The effect of the blade pitch failure on the offshore wind turbine structure decreases with increasing water depth, but increases with increasing hub height of the offshore wind turbine structure.

Aljeeran, Fares

2011-05-01T23:59:59.000Z

86

Overcoming Challenges in America's Offshore Wind Industry | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Overcoming Challenges in America's Offshore Wind Industry Overcoming Challenges in America's Offshore Wind Industry Overcoming Challenges in America's Offshore Wind Industry November 18, 2013 - 4:40pm Addthis Deputy Assistant Secretary for Renewable Energy Steven Chalk speaks during the American Wind Energy Association WINDPOWER Offshore conference in Providence, Rhode Island. | Photo courtesy of American Wind Energy Association Deputy Assistant Secretary for Renewable Energy Steven Chalk speaks during the American Wind Energy Association WINDPOWER Offshore conference in Providence, Rhode Island. | Photo courtesy of American Wind Energy Association Gregory M. Matzat PE; Senior Advisor, Offshore Wind Technologies A year of progress, preparation and promise was the theme connecting two days of panels and presentations last month at the 2013 American Wind

87

Structural health and prognostics management for offshore wind turbines : case studies of rotor fault and blade damage with initial O&M cost modeling.  

SciTech Connect

Operations and maintenance costs for offshore wind plants are significantly higher than the current costs for land-based (onshore) wind plants. One way to reduce these costs would be to implement a structural health and prognostic management (SHPM) system as part of a condition based maintenance paradigm with smart load management and utilize a state-based cost model to assess the economics associated with use of the SHPM system. To facilitate the development of such a system a multi-scale modeling approach developed in prior work is used to identify how the underlying physics of the system are affected by the presence of damage and faults, and how these changes manifest themselves in the operational response of a full turbine. This methodology was used to investigate two case studies: (1) the effects of rotor imbalance due to pitch error (aerodynamic imbalance) and mass imbalance and (2) disbond of the shear web; both on a 5-MW offshore wind turbine in the present report. Based on simulations of damage in the turbine model, the operational measurements that demonstrated the highest sensitivity to the damage/faults were the blade tip accelerations and local pitching moments for both imbalance and shear web disbond. The initial cost model provided a great deal of insight into the estimated savings in operations and maintenance costs due to the implementation of an effective SHPM system. The integration of the health monitoring information and O&M cost versus damage/fault severity information provides the initial steps to identify processes to reduce operations and maintenance costs for an offshore wind farm while increasing turbine availability, revenue, and overall profit.

Myrent, Noah J. [Purdue Center for Systems Integrity, Lafayette, IN; Kusnick, Joshua F. [Purdue Center for Systems Integrity, Lafayette, IN; Barrett, Natalie C. [Purdue Center for Systems Integrity, Lafayette, IN; Adams, Douglas E. [Purdue Center for Systems Integrity, Lafayette, IN; Griffith, Daniel Todd

2013-04-01T23:59:59.000Z

88

Garden State Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Farm Offshore Wind Farm Jump to: navigation, search Name Garden State Offshore Wind Farm Facility Garden State Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Developer Garden State Offshore Energy Location Offshore from Avalon NJ Coordinates 39.08°, -74.310556° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.08,"lon":-74.310556,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

89

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

1985. 23. Hau, E. Wind Turbines: Fundamentals, Technologies,for Floating Offshore Wind Turbines. Tech. no. NREL/CP-500-Full-scale Floating Wind Turbine." Statoil, 14 Oct. 2009.

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

90

Modeling the National Potential for Offshore Wind: Preprint  

SciTech Connect

The Wind Deployment System (WinDS) model was created to assess the potential penetration of offshore wind in the United States under different technology development, cost, and policy scenarios.

Short, W.; Sullivan, P.

2007-06-01T23:59:59.000Z

91

The Wind Speed Profile At Offshore Wind Farm Sites  

E-Print Network (OSTI)

Using Monin-Obukhov theory the vertical wind speed profile can be predicted from the wind speed at one height, when the two parameters Monin-Obukhov length and sea surface roughness are known. The applicability of this theory for wind power prediction at offshore sites is investigated using data from the measurement program Rdsand in the Danish Baltic Sea. Different methods to estimate the two parameters are discussed and compared. Significant deviations to the theory are found for near-neutral and stable conditions, where the measured wind shear is larger than predicted. A simple correction method to account for this effect has been developed and tested.

Bernhard Lange Sren; Bernhard Lange; Søren E. Larsen; Jørgen Højstrup; Rebecca Barthelmie

2002-01-01T23:59:59.000Z

92

Rhode Island Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Island Offshore Wind Farm Island Offshore Wind Farm Jump to: navigation, search Name Rhode Island Offshore Wind Farm Facility Rhode Island Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Developer Deepwater Wind Location Offshore from Sakonnet RI Coordinates 40.96°, -71.44° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.96,"lon":-71.44,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

93

Obama Administration Hosts Great Lakes Offshore Wind Workshop in Chicago  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hosts Great Lakes Offshore Wind Workshop in Hosts Great Lakes Offshore Wind Workshop in Chicago with Great Lakes Wind Collaborative Obama Administration Hosts Great Lakes Offshore Wind Workshop in Chicago with Great Lakes Wind Collaborative October 28, 2010 - 12:00am Addthis WASHINGTON - The White House Council on Environmental Quality and the U.S. Department of Energy hosted a workshop with the Great Lakes Wind Collaborative in Chicago on October 26 - 27, 2010, focused on the siting of offshore wind power in the Great Lakes. The two day workshop brought together wind developers, Federal and state regulators, environmental advocates, and other regional stakeholders to discuss methods for ensuring greater clarity, certainty and coordination of Federal and state decision-making for offshore wind development in the Great Lakes.

94

Multi-hazard Reliability Assessment of Offshore Wind Turbines  

E-Print Network (OSTI)

A probabilistic framework is developed to assess the structural reliability of offshore wind turbines. Probabilistic models are developed to predict the deformation, shear force and bending moment demands on the support structure of wind turbines. The proposed probabilistic models are developed starting from a commonly accepted deterministic model and by adding correction terms and model errors to capture respectively, the inherent bias and the uncertainty in developed models. A Bayesian approach is then used to assess the model parameters incorporating the information from virtual experiment data. The database of virtual experiments is generated using detailed three-dimensional finite element analyses of a suite of typical offshore wind turbines. The finite element analyses properly account for the nonlinear soil-structure interaction. Separate probabilistic demand models are developed for three operational/load conditions including: (1) operating under day-to-day wind and wave loading; (2) operating throughout earthquake in presence of day-to-day loads; and (3) parked under extreme wind speeds and earthquake ground motions. The proposed approach gives special attention to the treatment of both aleatory and epistemic uncertainties in predicting the demands on the support structure of wind turbines. The developed demand models are then used to assess the reliability of the support structure of wind turbines based on the proposed damage states for typical wind turbines and their corresponding performance levels. A multi-hazard fragility surface of a given wind turbine support structure as well as the seismic and wind hazards at a specific site location are incorporated into a probabilistic framework to estimate the annual probability of failure of the support structure. Finally, a framework is proposed to investigate the performance of offshore wind turbines operating under day-to-day loads based on their availability for power production. To this end, probabilistic models are proposed to predict the mean and standard deviation of drift response of the tower. The results are used in a random vibration based framework to assess the fragility as the probability of exceeding certain drift thresholds given specific levels of wind speed.

Mardfekri Rastehkena, Maryam 1981-

2012-12-01T23:59:59.000Z

95

Offshore Code Comparison Collaboration (OC3) for IEA Wind Task 23 Offshore Wind Technology and Deployment  

DOE Green Energy (OSTI)

This final report for IEA Wind Task 23, Offshore Wind Energy Technology and Deployment, is made up of two separate reports, Subtask 1: Experience with Critical Deployment Issues and Subtask 2: Offshore Code Comparison Collaborative (OC3). Subtask 1 discusses ecological issues and regulation, electrical system integration, external conditions, and key conclusions for Subtask 1. Subtask 2 included here, is the larger of the two volumes and contains five chapters that cover background information and objectives of Subtask 2 and results from each of the four phases of the project.

Jonkman, J.; Musial, W.

2010-12-01T23:59:59.000Z

96

New Reports Chart Offshore Wind's Path Forward | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reports Chart Offshore Wind's Path Forward Reports Chart Offshore Wind's Path Forward New Reports Chart Offshore Wind's Path Forward December 12, 2012 - 2:29pm Addthis Taking a look at the challenges and opportunities that lie ahead as the U.S. prepares to enter the offshore wind market. Click here to view the full infographic. | Infographic by Sarah Gerrity. Taking a look at the challenges and opportunities that lie ahead as the U.S. prepares to enter the offshore wind market. Click here to view the full infographic. | Infographic by Sarah Gerrity. Taking a look at the challenges and opportunities that lie ahead as the U.S. prepares to enter the offshore wind market. Click here to view the full infographic. | Infographic by Sarah Gerrity.

97

Blowing in the Wind ...Offshore | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Blowing in the Wind ...Offshore Blowing in the Wind ...Offshore Blowing in the Wind ...Offshore February 10, 2011 - 9:28am Addthis Cathy Zoi Former Assistant Secretary, Office of Energy Efficiency & Renewable Energy What will this project do? The new offshore wind strategy lays out a path to potentially have 54 gigawatts of offshore wind capacity by 2030, enough to power more than 15 million homes with clean, renewable energy. Have you ever flown a kite at the beach? If you have, you know how breezy it can be. A few miles offshore, you'll find that the wind is even stronger and steadier. And it's like that all around the country. Along the eastern seaboard and west coast, in the Great Lakes and Gulf of Mexico, and even around Hawaii we have a massive clean energy resource waiting to

98

Mustang Island Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Mustang Island Offshore Wind Farm Mustang Island Offshore Wind Farm Jump to: navigation, search Name Mustang Island Offshore Wind Farm Facility Mustang Island Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Baryonyx Corporation Developer Baryonyx Corporation Location Offshore from Mustang Island TX Coordinates 27.66°, -97.01° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":27.66,"lon":-97.01,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

99

International Collaboration on Offshore Wind Energy Under IEA Annex XXIII  

DOE Green Energy (OSTI)

This paper defines the purpose of IEA Annex XXIII, the International Collaboration on Offshore Wind Energy. This international collaboration through the International Energy Agency (IEA) is an efficient forum from which to advance the technical and environmental experiences collected from existing offshore wind energy projects, as well as the research necessary to advance future technology for deep-water wind energy technology.

Musial, W.; Butterfield, S.; Lemming, J.

2005-11-01T23:59:59.000Z

100

New Report Shows Trend Toward Larger Offshore Wind Systems, with...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

delivered to consumers. This year's U.S. Offshore Wind Market and Economic Analysis, authored by the Navigant Consortium for the Energy Department, builds on last year's...

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Feasibility Studies on Integrating Offshore Wind Power with Oil Platforms.  

E-Print Network (OSTI)

?? This thesis is centered around the possibilities of integrating offshore wind power together with oil and gas platforms. The motivation behind this topic is… (more)

Årdal, Atle Rygg

2011-01-01T23:59:59.000Z

102

Assessment of Offshore Wind Energy Resources for the United States  

NLE Websites -- All DOE Office Websites (Extended Search)

Technical Report NRELTP-500-45889 June 2010 Assessment of Offshore Wind Energy Resources for the United States Marc Schwartz, Donna Heimiller, Steve Haymes, and Walt Musial...

103

EA-1792: University of Maine's Deepwater Offshore Floating Wind...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here Home EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine EA-1792: University of Maine's...

104

DOE provides detailed offshore wind resource maps - Today in ...  

U.S. Energy Information Administration (EIA)

Offshore wind turbines, however, are costlier, take longer to build, and are more challenging to maintain. The United States does not currently have any operating, ...

105

Improved Offshore Wind Resource Assessment in Global Climate...  

NLE Websites -- All DOE Office Websites (Extended Search)

Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios Douglas Arent National...

106

NREL: Wind Research - New U.S. Offshore Wind Supply Chain Development...  

NLE Websites -- All DOE Office Websites (Extended Search)

New U.S. Offshore Wind Supply Chain Development Resources Available April 8, 2013 Clean Energy States Alliance, in conjunction with Douglas-Westwood and the U.S. Offshore Wind...

107

EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EA-1792: University of Maine's Deepwater Offshore Floating Wind EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine Summary This EA evaluates the environmental impacts of a proposal to support research on floating offshore wind turbine platforms. This project would support the mission, vision, and goals of DOE's Office of Energy Efficiency and Renewable Energy Wind and Water Power Program to improve performance, lower costs, and accelerate deployment of innovative wind power technologies. Development of offshore wind energy technologies would help the nation reduce its greenhouse gas emissions, diversify its energy supply, provide cost-competitive electricity to key coastal regions, and

108

Chu, Salazar to Announce Major Offshore Wind Energy Initiatives |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Salazar to Announce Major Offshore Wind Energy Initiatives Salazar to Announce Major Offshore Wind Energy Initiatives Chu, Salazar to Announce Major Offshore Wind Energy Initiatives February 4, 2011 - 12:00am Addthis NORFOLK,VA - On Monday, February 7, 2011 Energy Secretary Steven Chu and Secretary of the Interior Ken Salazar will announce major new initiatives to accelerate the responsible siting and development of offshore wind energy projects. WHAT: Offshore Wind Energy News Conference WHEN: Monday, February 7, 11:00 AM EST WHO: Steven Chu, Secretary of Energy Ken Salazar, Secretary of the Interior WHERE: Half Moone Center 11 Waterside Dr Norfolk, VA 23510 DIAL-IN: News media, state and local stakeholders, industry representatives and other interested parties can join a listen-only teleconference of the announcement by dialing 800-369-3311 and entering code: OFFSHORE.

109

Galveston Offshore Wind Phase 2 | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Phase 2 Offshore Wind Phase 2 Jump to: navigation, search Name Galveston Offshore Wind Phase 2 Facility Galveston Offshore Wind Phase 2 Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Coastal Point Energy LLC Developer Coastal Point Energy LLC Location Gulf of Mexico TX Coordinates 29.16°, -94.747° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.16,"lon":-94.747,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

110

Michigan Offshore Wind Pilot Project | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Pilot Project Offshore Wind Pilot Project Jump to: navigation, search Name Michigan Offshore Wind Pilot Project Facility Michigan Offshore Wind Pilot Project Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Mighigan Alternative and Renewable Energy Center Developer Mighigan Alternative and Renewable Energy Center Location Muskegon Lake MI Coordinates 43.231°, -86.307° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.231,"lon":-86.307,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

111

Impact of offshore winds on a buoyant river plume system  

Science Conference Proceedings (OSTI)

Idealized numerical simulations utilizing the Regional Ocean Modeling System (ROMS) are carried out to examine the response of buoyant river plume systems to offshore directed wind stresses. It is found that after a few inertial periods of wind ...

Joseph T. Jurisa; Robert J. Chant

112

Assessment of Offshore Wind Energy Leasing Areas for the BOEM...  

NLE Websites -- All DOE Office Websites (Extended Search)

Assessment of Offshore Wind Energy Leasing Areas for the BOEM New Jersey Wind Energy Area W. Musial, D. Elliott, J. Fields, Z. Parker, G. Scott, and C. Draxl National Renewable...

113

Assessment of Offshore Wind Energy Leasing Areas for the BOEM...  

NLE Websites -- All DOE Office Websites (Extended Search)

Assessment of Offshore Wind Energy Leasing Areas for the BOEM Maryland Wind Energy Area W. Musial, D. Elliott, J. Fields, Z. Parker, G. Scott, and C. Draxl Produced under direction...

114

Challenges in Simulation of Aerodynamics, Hydrodynamics, and Mooring-Line Dynamics of Floating Offshore Wind Turbines  

Science Conference Proceedings (OSTI)

This paper presents the current major modeling challenges for floating offshore wind turbine design tools and describes aerodynamic and hydrodynamic effects due to rotor and platform motions and usage of non-slender support structures.

Matha, D.; Schlipf, M.; Cordle, A.; Pereira, R.; Jonkman, J.

2011-10-01T23:59:59.000Z

115

Wind Resource Mapping for United States Offshore Areas: Preprint  

DOE Green Energy (OSTI)

The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) is producing validated wind resource maps for priority offshore regions of the United States. This report describes the methodology used to validate the maps and to build a Geographic Information Systems (GIS) database to classify the offshore wind resource by state, water depth, distance from shore, and administrative unit.

Elliott, D.; Schwartz, M.

2006-06-01T23:59:59.000Z

116

Offshore Wind Plant Balance-of-Station Cost Drivers and Sensitivities...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensitivities OFFSHORE WIND PLANT BALANCE-OF-STATION COST DRIVERS AND SENSITIVITIES OFFSHORE WIND PLANT BALANCE-OF-STATION COST DRIVERS AND SENSITIVITIES G. Saur, B. Maples, B....

117

Property:PotentialOffshoreWindGeneration | Open Energy Information  

Open Energy Info (EERE)

PotentialOffshoreWindGeneration PotentialOffshoreWindGeneration Jump to: navigation, search Property Name PotentialOffshoreWindGeneration Property Type Quantity Description The estimated potential energy generation from Offshore Wind for a particular place. Use this type to express a quantity of energy. The default unit for energy on OpenEI is the Kilowatt hour (kWh), which is 3,600,000 Joules. http://en.wikipedia.org/wiki/Unit_of_energy It's possible types are Watt hours - 1000 Wh, Watt hour, Watthour Kilowatt hours - 1 kWh, Kilowatt hour, Kilowatthour Megawatt hours - 0.001 MWh, Megawatt hour, Megawatthour Gigawatt hours - 0.000001 GWh, Gigawatt hour, Gigawatthour Joules - 3600000 J, Joules, joules Pages using the property "PotentialOffshoreWindGeneration" Showing 25 pages using this property. (previous 25) (next 25)

118

NREL: Wind Research - Energy Analysis of Offshore Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Analysis of Offshore Systems Energy Analysis of Offshore Systems Chart of cost data for actual and projected offshore wind projects as reported by developers. Enlarge image NREL has a long history of successful research to understand and improve the cost of wind generation technology. As a research laboratory, NREL is a neutral, third party and can provide an unbiased perspective of methodologies and approaches used to estimate direct and indirect economic impacts of offshore wind. Market Analysis NREL's extensive research on installed and proposed projects in Europe, the United States, and other emerging offshore markets enables the compilation of a database of installed and proposed project costs. These are used to report on cost trends. Recent studies include: Analysis of capital cost trends for planned and installed offshore

119

Future for Offshore Wind Energy in the United States: Preprint  

DOE Green Energy (OSTI)

Until recently, the offshore wind energy potential in the United States was ignored because vast onshore wind resources have the potential to fulfill the electrical energy needs for the entire country. However, the challenge of transmitting the electricity to the large load centers may limit wind grid penetration for land-based turbines. Offshore wind turbines can generate power much closer to higher value coastal load centers. Reduced transmission constraints, steadier and more energetic winds, and recent European success, have made offshore wind energy more attractive for the United States. However, U.S. waters are generally deeper than those on the European coast, and will require new technology. This paper presents an overview of U.S. coastal resources, explores promising deepwater wind technology, and predicts long-term cost-of-energy (COE) trends. COE estimates are based on generic 5-MW wind turbines in a hypothetical 500-MW wind power plant. Technology improvements and volume production are expected to lower costs to meet the U.S. Department of Energy target range of $0.06/kWh for deployment of deepwater offshore wind turbines by 2015, and $0.05/kWh by 2012 for shallow water. Offshore wind systems can diversify the U.S. electric energy supply and provide a new market for wind energy that is complementary to onshore development.

Musial, W.; Butterfield, S.

2004-06-01T23:59:59.000Z

120

Floating offshore wind farms : demand planning & logistical challenges of electricity generation  

E-Print Network (OSTI)

Floating offshore wind farms are likely to become the next paradigm in electricity generation from wind energy mainly because of the near constant high wind speeds in an offshore environment as opposed to the erratic wind ...

Nnadili, Christopher Dozie, 1978-

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Short-term Wind Power Prediction for Offshore Wind Farms -Evaluation of Fuzzy-Neural Network Based Models  

E-Print Network (OSTI)

Short-term Wind Power Prediction for Offshore Wind Farms - Evaluation of Fuzzy-Neural Network Based of wind power capacities are likely to take place offshore. As for onshore wind parks, short-term wind of offshore farms and their secure integration to the grid. Modeling the behavior of large wind farms

Paris-Sud XI, Université de

122

Foundation for Offshore Wind Energy | Open Energy Information  

Open Energy Info (EERE)

Offshore Wind Energy Offshore Wind Energy Jump to: navigation, search Name Foundation for Offshore Wind Energy Place Varel, Germany Zip D-26316 Sector Wind energy Product Foundation established to operate the 60MW Borkum West Offshore Wind Farm. Coordinates 53.393773°, 8.13759° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":53.393773,"lon":8.13759,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

123

DOE Announces Webinars on an Offshore Wind Economic Impacts Model,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

an Offshore Wind Economic Impacts Model, an Offshore Wind Economic Impacts Model, Resources for Tribal Energy Efficiency Projects, and More DOE Announces Webinars on an Offshore Wind Economic Impacts Model, Resources for Tribal Energy Efficiency Projects, and More November 20, 2013 - 11:54am Addthis EERE offers webinars to the public on a range of subjects, from adopting the latest energy efficiency and renewable energy technologies to training for the clean energy workforce. Webinars are free; however, advanced registration is typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts. Upcoming Webinars November 20: Live Webinar on Jobs and Economic Development Impacts of Offshore Wind Webinar Sponsor: EERE's Wind and Water Power Technologies Office

124

New report assesses offshore wind technology challenges and potential risks and benefits.  

E-Print Network (OSTI)

of the offshore wind energy industry, Large-Scale Offshore Wind Power in the United States. It provides a broad resource. The United States possesses large and accessible offshore wind energy resources. The availability of offshore wind energy facilities would generate an estimated $200 billion in new economic activity

125

New Facility to Shed Light on Offshore Wind Resource (Fact Sheet)  

DOE Green Energy (OSTI)

Chesapeake Light Tower facility will gather key data for unlocking the nation's vast offshore wind resource.

Not Available

2013-05-01T23:59:59.000Z

126

Offshore Wind Farm Layout Optimization (OWFLO) Project: Preliminary Results  

E-Print Network (OSTI)

literature to date has focused on land-based wind farms, rather than on offshore farms. Typically, energy wind energy. The project combines an energy production model--taking into account wake effects the cost of energy while maximizing the energy production of the wind farm. Particular attention has been

Massachusetts at Amherst, University of

127

Property:PotentialOffshoreWindCapacity | Open Energy Information  

Open Energy Info (EERE)

PotentialOffshoreWindCapacity PotentialOffshoreWindCapacity Jump to: navigation, search Property Name PotentialOffshoreWindCapacity Property Type Quantity Description The nameplate capacity technical potential from Offshore Wind for a particular place. Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS 0.001 GW,gigawatt,gigawatts,Gigawatt,Gigawatts,GigaWatt,GigaWatts,GIGAWATT,GIGAWATTS

128

Offshore Wind and Vehicle to Grid Power | Princeton Plasma Physics...  

NLE Websites -- All DOE Office Websites (Extended Search)

November 11, 2013, 4:30pm to 6:00pm Princeton University Computer Science Auditorium 104 Offshore Wind and Vehicle to Grid Power Professor Willett Kempton University of Delaware...

129

NREL Collaborates with SWAY on Offshore Wind Demonstration (Fact...  

NLE Websites -- All DOE Office Websites (Extended Search)

SWAY hopes these data will validate its design for a 10-megawatt floating offshore wind turbine. The SWAY one-fifth scale prototype has a 13-meter (m) downwind rotor on a 29-m...

130

Jobs and Economic Development Impact (JEDI) Model: Offshore Wind...  

Wind Powering America (EERE)

default values representative of a "typical" offshore wind project constructed in water with an average depth of 25 meters and no farther than 100 nautical miles from a port....

131

Aeroelastic Instabilities of Large Offshore and Onshore Wind Turbines: Preprint  

DOE Green Energy (OSTI)

This paper examines the aeroelastic stability of a 5-MW conceptual wind turbine mounted on a floating barge and presents results for onshore and offshore configurations for various conditions.

Bir, G.; Jonkman, J.

2007-08-01T23:59:59.000Z

132

Wind Resource Mapping for United States Offshore Areas: Preprint  

SciTech Connect

The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) is producing validated wind resource maps for priority offshore regions of the United States. This report describes the methodology used to validate the maps and to build a Geographic Information Systems (GIS) database to classify the offshore wind resource by state, water depth, distance from shore, and administrative unit.

Elliott, D.; Schwartz, M.

2006-06-01T23:59:59.000Z

133

Conceptual Model of Offshore Wind Environmental Risk Evaluation System  

SciTech Connect

In this report we describe the development of the Environmental Risk Evaluation System (ERES), a risk-informed analytical process for estimating the environmental risks associated with the construction and operation of offshore wind energy generation projects. The development of ERES for offshore wind is closely allied to a concurrent process undertaken to examine environmental effects of marine and hydrokinetic (MHK) energy generation, although specific risk-relevant attributes will differ between the MHK and offshore wind domains. During FY10, a conceptual design of ERES for offshore wind will be developed. The offshore wind ERES mockup described in this report will provide a preview of the functionality of a fully developed risk evaluation system that will use risk assessment techniques to determine priority stressors on aquatic organisms and environments from specific technology aspects, identify key uncertainties underlying high-risk issues, compile a wide-range of data types in an innovative and flexible data organizing scheme, and inform planning and decision processes with a transparent and technically robust decision-support tool. A fully functional version of ERES for offshore wind will be developed in a subsequent phase of the project.

Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.; Unwin, Stephen D.; Hamilton, Erin L.

2010-06-01T23:59:59.000Z

134

Sensitivity Analysis of Offshore Wind Cost of Energy (Poster)  

DOE Green Energy (OSTI)

No matter the source, offshore wind energy plant cost estimates are significantly higher than for land-based projects. For instance, a National Renewable Energy Laboratory (NREL) review on the 2010 cost of wind energy found baseline cost estimates for onshore wind energy systems to be 71 dollars per megawatt-hour ($/MWh), versus 225 $/MWh for offshore systems. There are many ways that innovation can be used to reduce the high costs of offshore wind energy. However, the use of such innovation impacts the cost of energy because of the highly coupled nature of the system. For example, the deployment of multimegawatt turbines can reduce the number of turbines, thereby reducing the operation and maintenance (O&M) costs associated with vessel acquisition and use. On the other hand, larger turbines may require more specialized vessels and infrastructure to perform the same operations, which could result in higher costs. To better understand the full impact of a design decision on offshore wind energy system performance and cost, a system analysis approach is needed. In 2011-2012, NREL began development of a wind energy systems engineering software tool to support offshore wind energy system analysis. The tool combines engineering and cost models to represent an entire offshore wind energy plant and to perform system cost sensitivity analysis and optimization. Initial results were collected by applying the tool to conduct a sensitivity analysis on a baseline offshore wind energy system using 5-MW and 6-MW NREL reference turbines. Results included information on rotor diameter, hub height, power rating, and maximum allowable tip speeds.

Dykes, K.; Ning, A.; Graf, P.; Scott, G.; Damiami, R.; Hand, M.; Meadows, R.; Musial, W.; Moriarty, P.; Veers, P.

2012-10-01T23:59:59.000Z

135

NREL: Wind Research - Offshore Design Tools and Methods  

NLE Websites -- All DOE Office Websites (Extended Search)

Design Tools and Methods Design Tools and Methods Graphic of a modular depiction of the FAST tool, which includes aerodynamics, hydrodynamics, control and electrical system dynamics, and structural dynamics modules. NREL's CAE Tool, FAST, and its Sub-Modules Illustration of wind turbines in various environments including land-based, shallow water (0-30m), transitional depth (30-60m), and deep water floating (greater than 60m). FAST has the capability of modeling a wide range of offshore wind system configurations including shallow water, transitional depth, and floating systems. With DOE's support, NREL has developed and maintains a robust, open-source, modular computer-aided engineering (CAE) tool, known as FAST. It has state-of-the-art capabilities for full dynamic system simulation over a

136

Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length  

SciTech Connect

With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

2013-07-01T23:59:59.000Z

137

Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length  

DOE Green Energy (OSTI)

With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

2013-07-01T23:59:59.000Z

138

Multi-Agent Model for Fatigue Control in Large Offshore Wind Farm  

Science Conference Proceedings (OSTI)

To control wind turbine fatigue and optimize the fatigue distribution for offshore wind farm, a control network model is proposed based on Multi-Agent theory. A typical model of large-scale offshore wind farm is described. Power fatigue of individual ... Keywords: Multi-Agent model, fatigue, wind turbine, offshore wind farm

Rongyong Zhao; Yongqing Su; Torben Knudsen; Thomas Bak; WenZhong Shen

2008-12-01T23:59:59.000Z

139

The Future of Offshore Wind Energy and Transmission in New Jersey...  

NLE Websites -- All DOE Office Websites (Extended Search)

1, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium The Future of Offshore Wind Energy and Transmission in New Jersey Kris Ohleth The Atlantic Wind Connection Offshore wind is the...

140

Strengthening America's Energy Security with Offshore Wind (Fact Sheet)  

SciTech Connect

This fact sheet describes the current state of the offshore wind industry in the United States and the offshore wind research and development activities conducted the U.S. Department of Energy Wind and Water Power Program.

2012-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Strengthening America's Energy Security with Offshore Wind (Fact Sheet) (Revised)  

SciTech Connect

This fact sheet provides a brief description of offshore wind energy development in the U.S. and DOE's Wind Program offshore wind R&D activities.

2012-04-01T23:59:59.000Z

142

U.S. Offshore Wind Manufacturing and Supply Chain Development  

SciTech Connect

The objective of the report is to provide an assessment of the domestic supply chain and manufacturing infrastructure supporting the U.S. offshore wind market. The report provides baseline information and develops a strategy for future development of the supply chain required to support projected offshore wind deployment levels. A brief description of each of the key chapters includes: » Chapter 1: Offshore Wind Plant Costs and Anticipated Technology Advancements. Determines the cost breakdown of offshore wind plants and identifies technical trends and anticipated advancements in offshore wind manufacturing and construction. » Chapter 2: Potential Supply Chain Requirements and Opportunities. Provides an organized, analytical approach to identifying and bounding the uncertainties associated with a future U.S. offshore wind market. It projects potential component-level supply chain needs under three demand scenarios and identifies key supply chain challenges and opportunities facing the future U.S. market as well as current suppliers of the nation’s land-based wind market. » Chapter 3: Strategy for Future Development. Evaluates the gap or competitive advantage of adding manufacturing capacity in the U.S. vs. overseas, and evaluates examples of policies that have been successful . » Chapter 4: Pathways for Market Entry. Identifies technical and business pathways for market entry by potential suppliers of large-scale offshore turbine components and technical services. The report is intended for use by the following industry stakeholder groups: (a) Industry participants who seek baseline cost and supplier information for key component segments and the overall U.S. offshore wind market (Chapters 1 and 2). The component-level requirements and opportunities presented in Section 2.3 will be particularly useful in identifying market sizes, competition, and risks for the various component segments. (b) Federal, state, and local policymakers and economic development agencies, to assist in identifying policies with low effort and high impact (Chapter 3). Section 3.3 provides specific policy examples that have been demonstrated to be effective in removing barriers to development. (c) Current and potential domestic suppliers in the offshore wind market, in evaluating areas of opportunity and understanding requirements for participation (Chapter 4). Section 4.4 provides a step-by-step description of the qualification process that suppliers looking to sell components into a future U.S. offshore wind market will need to follow.

Hamilton, Bruce Duncan [Navigant Consulting, Inc.

2013-02-22T23:59:59.000Z

143

Offshore Code Comparison Collaboration, Continuation: Phase II Results of a Floating Semisubmersible Wind System: Preprint  

DOE Green Energy (OSTI)

Offshore wind turbines are designed and analyzed using comprehensive simulation tools that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. The Offshore Code Comparison Collaboration (OC3), which operated under the International Energy Agency (IEA) Wind Task 23, was established to verify the accuracy of these simulation tools [1]. This work was then extended under the Offshore Code Comparison Collaboration, Continuation (OC4) project under IEA Wind Task 30 [2]. Both of these projects sought to verify the accuracy of offshore wind turbine dynamics simulation tools (or codes) through code-to-code comparison of simulated responses of various offshore structures. This paper describes the latest findings from Phase II of the OC4 project, which involved the analysis of a 5-MW turbine supported by a floating semisubmersible. Twenty-two different organizations from 11 different countries submitted results using 24 different simulation tools. The variety of organizations contributing to the project brought together expertise from both the offshore structure and wind energy communities. Twenty-one different load cases were examined, encompassing varying levels of model complexity and a variety of metocean conditions. Differences in the results demonstrate the importance and accuracy of the various modeling approaches used. Significant findings include the importance of mooring dynamics to the mooring loads, the role nonlinear hydrodynamic terms play in calculating drift forces for the platform motions, and the difference between global (at the platform level) and local (at the member level) modeling of viscous drag. The results from this project will help guide development and improvement efforts for these tools to ensure that they are providing the accurate information needed to support the design and analysis needs of the offshore wind community.

Robertson, A.; Jonkman, J.; Musial, W.; Vorpahl, F.; Popko, W.

2013-11-01T23:59:59.000Z

144

Offshore Wind Park Connection to an HVDC Platform, without using an AC Collector Platform.  

E-Print Network (OSTI)

?? This thesis investigates the comparison between two different alternating current topologies of an offshore wind farms connection to an offshore high voltage direct current… (more)

Ahmad, Haseeb

2012-01-01T23:59:59.000Z

145

Wind Class Sampling of Satellite SAR Imagery for Offshore Wind Resource Mapping  

Science Conference Proceedings (OSTI)

High-resolution wind fields retrieved from satellite synthetic aperture radar (SAR) imagery are combined for mapping of wind resources offshore where site measurements are costly and sparse. A new sampling strategy for the SAR scenes is ...

Merete Badger; Jake Badger; Morten Nielsen; Charlotte Bay Hasager; Alfredo Peña

2010-12-01T23:59:59.000Z

146

Quantifying the Impact of Wind Turbine Wakes on Power Output at Offshore Wind Farms  

Science Conference Proceedings (OSTI)

There is an urgent need to develop and optimize tools for designing large wind farm arrays for deployment offshore. This research is focused on improving the understanding of, and modeling of, wind turbine wakes in order to make more accurate ...

R. J. Barthelmie; S. C. Pryor; S. T. Frandsen; K. S. Hansen; J. G. Schepers; K. Rados; W. Schlez; A. Neubert; L. E. Jensen; S. Neckelmann

2010-08-01T23:59:59.000Z

147

Virginia Offshore Wind Cost Reduction Through Innovation Study (VOWCRIS) (Poster)  

DOE Green Energy (OSTI)

The VOWCRIS project is an integrated systems approach to the feasibility-level design, performance, and cost-of-energy estimate for a notional 600-megawatt offshore wind project using site characteristics that apply to the Wind Energy Areas of Virginia, Maryland and North Carolina.

Maples, B.; Campbell, J.; Arora, D.

2014-10-01T23:59:59.000Z

148

Electrical Collection and Transmission Systems for Offshore Wind Power: Preprint  

SciTech Connect

The electrical systems needed for offshore wind farms to collect power from wind turbines--and transmit it to shore--will be a significant cost element of these systems. This paper describes the development of a simplified model of the cost and performance of such systems.

Green, J.; Bowen, A.; Fingersh, L.J.; Wan, Y.

2007-03-01T23:59:59.000Z

149

Extreme Winds and Wind Effects on Structures  

Science Conference Proceedings (OSTI)

Extreme Winds and Wind Effects on Structures. The Engineering ... section. I. Extreme Winds: ... II. Wind Effects on Buildings. Database ...

2013-01-17T23:59:59.000Z

150

Subtask 2 The Offshore Code Comparison Collaboration (OC3) IEA Wind Task 23 Offshore Wind Technology and Deployment  

E-Print Network (OSTI)

the larger of the two volumes and contains five chapters that cover background information and objectives of Subtask 2 and the results from each of the four phases of the project. Recognizing the interest and challenges of offshore development of wind energy, IEA Wind Task 11,

Jason Jonkman; Walt Musial

2010-01-01T23:59:59.000Z

151

Wind resources and wind farm wake effects offshore observed from satellite  

E-Print Network (OSTI)

Wind resources and wind farm wake effects offshore observed from satellite Charlotte Bay Hasager, Wind Energy Department, Roskilde, Denmark Charlotte.hasager@risoe.dk, poul.astrup@risoe.dk, merete.bruun.Christiansen@risoe.dk, morten.Nielsen@risoe.dk, r.barthelmie@risoe.dk Abstract: Satellite observations of ocean wind speed

152

Rhode Island to Build First Offshore Wind Farm | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rhode Island to Build First Offshore Wind Farm Rhode Island to Build First Offshore Wind Farm Rhode Island to Build First Offshore Wind Farm March 15, 2010 - 6:38pm Addthis Rhode Island’s first offshore wind farm will be built in Block Island. | File photo Rhode Island's first offshore wind farm will be built in Block Island. | File photo Block Island, a small town with only 1,000 full-time, residents, is the site for a big project, when it will become home to Rhode Island's first offshore wind farm. Powerful ocean winds lie right off Block Island's south shore. That's the benefit of offshore wind farms - they can take advantage of the harder, stronger winds found a few miles off the coast Deepwater Wind LLC is leading the effort with plans to construct up to eight wind turbines three miles off of Block Island's shore.

153

Improvement Of The Wind Farm Model Flap For Offshore Applications  

E-Print Network (OSTI)

The wind farm program FLaP (Farm Layout Program), developed at the University of Oldenburg, has been extended to improve the description of wake development in offshore conditions, especially the low ambient turbulence and the effect of atmospheric stability. Model results have been compared with measurements from the Danish offshore wind farm Vindeby. Vertical wake profiles and mean turbulence intensities in the wake were compared for 32 scenarios of single, double and quintuple wake cases with different mean wind speed, turbulence intensity and atmospheric stability. It was found that within the measurement uncertainties the results of the wake model compares well with the measurements for the most important ambient conditions. The effect of the low turbulence intensity offshore on the wake development was modelled well. Deviations have been found when atmospheric stability deviates from near-neutral conditions. Especially for stable atmospheric conditions both the free flow model and the wake model do not give satisfying results.

Bernhard Lange; Hans-peter Waldl; Rebecca Barthelmie; Algert Gil Guerrero; Detlev Heinemann

2002-01-01T23:59:59.000Z

154

Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine  

E-Print Network (OSTI)

In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control, mooring dynamics and platform motion. In particular, the numerical tool developed in this study is based on the single turbine analysis tool FAST, which was developed by National Renewable Energy Laboratory (NREL). For linear or nonlinear hydrodynamics of floating platform and generalized-coordinate-based FEM mooring line dynamics, CHARM3D program, hull-riser-mooring coupled dynamics program developed by Prof. M.H. Kim’s research group during the past two decades, is incorporated. So, the entire dynamic behavior of floating offshore wind turbine can be obtained by coupled FAST-CHARM3D in the time domain. During the coupling procedure, FAST calculates all the dynamics and control of tower and wind turbine including the platform itself, and CHARM3D feeds all the relevant forces on the platform into FAST. Then FAST computes the whole dynamics of wind turbine using the forces from CHARM3D and return the updated displacements and velocities of the platform to CHARM3D. To analyze the dynamics of MUFOWT, the coupled FAST-CHARM3D is expanded more and re-designed. The global matrix that includes one floating platform and a number of turbines is built at each time step of the simulation, and solved to obtain the entire degrees of freedom of the system. The developed MUFOWT analysis tool is able to compute any type of floating platform with various kinds of horizontal axis wind turbines (HAWT). Individual control of each turbine is also available and the different structural properties of tower and blades can be applied. The coupled dynamic analysis for the three-turbine MUFOWT and five-turbine MUFOWT are carried out and the performances of each turbine and floating platform in normal operational condition are assessed. To investigate the coupling effect between platform and each turbine, one turbine failure event is simulated and checked. The analysis shows that some of the mal-function of one turbine in MUFOWT may induce significant changes in the performance of other turbines or floating platform. The present approach can directly be applied to the development of the remote structural health monitoring system of MUFOWT in detecting partial turbine failure by measuring tower or platform responses in the future.

Bae, Yoon Hyeok

2013-05-01T23:59:59.000Z

155

Reliability-based framework for fatigue damage prognosis of bonded structural elements in aerospace composite structures  

E-Print Network (OSTI)

model for joint wave and wind loads on offshore structures,UAV wing, offshore platforms, and composite wind turbinesuch as wind turbines, critical components in offshore

Gobbato, Maurizio

2011-01-01T23:59:59.000Z

156

An Update on the National Offshore Wind Strategy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

An Update on the National Offshore Wind Strategy An Update on the National Offshore Wind Strategy An Update on the National Offshore Wind Strategy December 17, 2012 - 11:27am Addthis Principle Power's wind float prototype in Portugal. The company was recently awarded an Energy Department grant to support a 30 megawatt floating offshore wind farm near Oregon's Port of Coos Bay. | Photo courtesy of Principle Power. Principle Power's wind float prototype in Portugal. The company was recently awarded an Energy Department grant to support a 30 megawatt floating offshore wind farm near Oregon's Port of Coos Bay. | Photo courtesy of Principle Power. Jose Zayas Jose Zayas Program Manager, Wind and Water Power Program Get the Details on Offshore Wind Take a look at our National Offshore Wind Strategy for information

157

Finite Element Analysis of Erosion for Offshore Structure  

Science Conference Proceedings (OSTI)

Presentation Title, Finite Element Analysis of Erosion for Offshore Structure ... impacting, is one of the major failure modes that cause offshore structure damage .

158

Large-Scale Offshore Wind Power in the United States: Executive Summary  

DOE Green Energy (OSTI)

This document provides a summary of a 236-page NREL report that provides a broad understanding of today's offshore wind industry, the offshore wind resource, and the associated technology challenges, economics, permitting procedures, and potential risks and benefits.

Musial, W.; Ram, B.

2010-09-01T23:59:59.000Z

159

Development of Offshore Wind Recommended Practice for U.S. Waters: Preprint  

DOE Green Energy (OSTI)

This paper discusses how the American Petroleum Institute oil and gas standards were interfaced with International Electrotechnical Commission and other wind turbine and offshore industry standards to provide guidance for reliable engineering design practices for offshore wind energy systems.

Musial, W. D.; Sheppard, R. E.; Dolan, D.; Naughton, B.

2013-04-01T23:59:59.000Z

160

Offshore Code Comparison Collaboration within IEA Wind Task 23: Phase IV Results Regarding Floating Wind Turbine Modeling; Preprint  

SciTech Connect

Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Task 23. In the latest phase of the project, participants used an assortment of codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating spar buoy in 320 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants' codes, thus improving the standard of offshore wind turbine modeling.

Jonkman, J.; Larsen, T.; Hansen, A.; Nygaard, T.; Maus, K.; Karimirad, M.; Gao, Z.; Moan, T.; Fylling, I.

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Offshore Code Comparison Collaboration within IEA Wind Task 23: Phase IV Results Regarding Floating Wind Turbine Modeling; Preprint  

DOE Green Energy (OSTI)

Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. This paper describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Task 23. In the latest phase of the project, participants used an assortment of codes to model the coupled dynamic response of a 5-MW wind turbine installed on a floating spar buoy in 320 m of water. Code predictions were compared from load-case simulations selected to test different model features. The comparisons have resulted in a greater understanding of offshore floating wind turbine dynamics and modeling techniques, and better knowledge of the validity of various approximations. The lessons learned from this exercise have improved the participants' codes, thus improving the standard of offshore wind turbine modeling.

Jonkman, J.; Larsen, T.; Hansen, A.; Nygaard, T.; Maus, K.; Karimirad, M.; Gao, Z.; Moan, T.; Fylling, I.

2010-04-01T23:59:59.000Z

162

Development of Fully Coupled Aeroelastic and Hydrodynamic Models for Offshore Wind Turbines: Preprint  

SciTech Connect

Aeroelastic simulation tools are routinely used to design and analyze onshore wind turbines, in order to obtain cost effective machines that achieve favorable performance while maintaining structural integrity. These tools employ sophisticated models of wind-inflow; aerodynamic, gravitational, and inertial loading of the rotor, nacelle, and tower; elastic effects within and between components; and mechanical actuation and electrical responses of the generator and of control and protection systems. For offshore wind turbines, additional models of the hydrodynamic loading in regular and irregular seas, the dynamic coupling between the support platform motions and wind turbine motions, and the dynamic characterization of mooring systems for compliant floating platforms are also important. Hydrodynamic loading includes contributions from hydrostatics, wave radiation, and wave scattering, including free surface memory effects. The integration of all of these models into comprehensive simulation tools, capable of modeling the fully coupled aeroelastic and hydrodynamic responses of floating offshore wind turbines, is presented.

Jonkman, J. M.; Sclavounos, P. D.

2006-01-01T23:59:59.000Z

163

Assessment of Offshore Wind Energy Potential in the United States (Poster)  

DOE Green Energy (OSTI)

The development of an offshore wind resource database is one of the first steps necessary to understand the magnitude of the resource and to plan the distribution and development of future offshore wind power facilities. The U.S. Department of Energy supported the production of offshore wind resource maps and potential estimates for much of the United States. This presentation discusses NREL's 2010 offshore wind resources report; current U.S., regional, and state offshore maps; methodology for the wind mapping and validation; wind potential estimates; the Geographic Information Systems database; and future work and conclusions.

Elliott, D.; Schwartz, M.; Haymes, S.; Heimiller, D.; Musial, W.

2011-05-01T23:59:59.000Z

164

Promoting Offshore Wind Along the "Fresh Coast" | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Promoting Offshore Wind Along the "Fresh Coast" Promoting Offshore Wind Along the "Fresh Coast" Promoting Offshore Wind Along the "Fresh Coast" October 12, 2010 - 12:18pm Addthis Chris Hart Offshore Wind Team Lead, Wind & Water Power Program When people think about offshore wind power, the first location that comes to mind probably isn't Cleveland, Ohio. Most of the offshore wind turbines installed around the world are operating in salt water, like Europe's North Sea and Baltic Sea, and most of the offshore wind projects proposed in U.S. waters are in the Atlantic Ocean or Gulf of Mexico. But the winds blowing above Lake Erie, only a few miles off the shore from Cleveland, represent a huge potential source of clean, renewable energy that could yield substantial benefits for the regional economy and

165

Figure 4.16 Offshore Wind Resources - U.S. Energy Information ...  

U.S. Energy Information Administration (EIA)

Figure 4.16 Offshore Wind Resources U.S. Energy Information Administration / Annual Energy Review 2011 123 Notes: • Data are annual average wind speed at 90 meters.

166

Status of Offshore Wind Energy Projects, Policies and Programs in the United States  

SciTech Connect

This paper provides the status of the offshore wind energy project proposals in the United States and describes strategic issues faced by the U.S. wind industry.

Musial, W.; Ram, B.

2008-01-01T23:59:59.000Z

167

United States Offshore Wind Resource Map at 90 Meters  

Wind Powering America (EERE)

Offshore Wind Speed at 90 m 10-JAN-2011 1.1.1 Wind Speed at 90 m ms 11.5 - 12.0 11.0 - 11.5 10.5 - 11.0 10.0 - 10.5 9.5 - 10.0 9.0 - 9.5 8.5 - 9.0 8.0 - 8.5 7.5 - 8.0 7.0 - 7.5...

168

Property:PotentialOffshoreWindArea | Open Energy Information  

Open Energy Info (EERE)

PotentialOffshoreWindArea PotentialOffshoreWindArea Jump to: navigation, search Property Name PotentialOffshoreWindArea Property Type Quantity Description The area of potential offshore wind in a place. Use this type to express a quantity of two-dimensional space. The default unit is the square meter (m²). http://en.wikipedia.org/wiki/Area Acceptable units (and their conversions) are: Square Meters - 1 m²,m2,m^2,square meter,square meters,Square Meter,Square Meters,Sq. Meters,SQUARE METERS Square Kilometers - 0.000001 km²,km2,km^2,square kilometer,square kilometers,square km,square Kilometers,SQUARE KILOMETERS Square Miles - 0.000000386 mi²,mi2,mi^2,mile²,square mile,square miles,square mi,Square Miles,SQUARE MILES Square Feet - 10.7639 ft²,ft2,ft^2,square feet,square foot,FT²,FT2,FT^2,Square Feet, Square Foot

169

Where the wind blows: navigating offshore wind development, domestically and abroad  

Science Conference Proceedings (OSTI)

2010 is a defining year for offshore wind power globally. Many are watching with bated breath to see how the Department of Interior will handle the future of the industry in the United States. (author)

Colander, Brandi

2010-04-15T23:59:59.000Z

170

Landmark Report Analyzes Current State of U.S. Offshore Wind Industry (Fact Sheet)  

DOE Green Energy (OSTI)

New report assesses offshore wind industry, offshore wind resource, technology challenges, economics, permitting procedures, and potential risks and benefits. The National Renewable Energy Laboratory (NREL) recently published a new report that analyzes the current state of the offshore wind energy industry, Large-Scale Offshore Wind Power in the United States. It provides a broad understanding of the offshore wind resource, and details the associated technology challenges, economics, permitting procedures, and potential risks and benefits of developing this clean, domestic, renewable resource. The United States possesses large and accessible offshore wind energy resources. The availability of these strong offshore winds close to major U.S. coastal cities significantly reduces power transmission issues. The report estimates that U.S. offshore winds have a gross potential generating capacity four times greater than the nation's present electric capacity. According to the report, developing the offshore wind resource along U.S. coastlines and in the Great Lakes would help the nation: (1) Achieve 20% of its electricity from wind by 2030 - Offshore wind could supply 54 gigawatts of wind capacity to the nation's electrical grid, increasing energy security, reducing air and water pollution, and stimulating the domestic economy. (2) Provide clean power to its coastal demand centers - Wind power emits no carbon dioxide (CO2) and there are plentiful winds off the coasts of 26 states. (3) Revitalize its manufacturing sector - Building 54 GW of offshore wind energy facilities would generate an estimated $200 billion in new economic activity, and create more than 43,000 permanent, well-paid technical jobs in manufacturing, construction, engineering, operations and maintenance. NREL's report concludes that the development of the nation's offshore wind resources can provide many potential benefits, and with effective research, policies, and commitment, offshore wind energy can play a vital role in future U.S. energy markets.

Not Available

2011-09-01T23:59:59.000Z

171

DOE Releases Comprehensive Report on Offshore Wind Power in the United  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Releases Comprehensive Report on Offshore Wind Power in the DOE Releases Comprehensive Report on Offshore Wind Power in the United States DOE Releases Comprehensive Report on Offshore Wind Power in the United States October 7, 2010 - 12:00am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu announced today the release of a report from the Department of Energy's National Renewable Energy Laboratory (NREL), which comprehensively analyzes the key factors impacting the deployment of offshore wind power in the U.S. The report, "Large-Scale Offshore Wind Power in the United States: Assessment of Opportunities and Barriers," includes a detailed assessment of the Nation's offshore wind resources and offshore wind industry, including future job growth potential. The report also analyzes the technology challenges,

172

DOE Releases Comprehensive Report on Offshore Wind Power in the United  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Comprehensive Report on Offshore Wind Power in the Comprehensive Report on Offshore Wind Power in the United States DOE Releases Comprehensive Report on Offshore Wind Power in the United States October 7, 2010 - 12:00am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu announced today the release of a report from the Department of Energy's National Renewable Energy Laboratory (NREL), which comprehensively analyzes the key factors impacting the deployment of offshore wind power in the U.S. The report, "Large-Scale Offshore Wind Power in the United States: Assessment of Opportunities and Barriers," includes a detailed assessment of the Nation's offshore wind resources and offshore wind industry, including future job growth potential. The report also analyzes the technology challenges, economics, permitting procedures, and the potential risks and benefits of

173

Coupled dynamic analysis of floating offshore wind farms  

E-Print Network (OSTI)

During the past decade, the demand for clean renewable energy continues to rise drastically in Europe, the US, and other countries. Wind energy in the ocean can possibly be one of those future renewable clean energy sources as long it is economically feasible and technologically manageable. So far, most of the offshore wind farm research has been limited to fixed platforms in shallow-water areas. In the water depth deeper than 30m, however, floating-type wind farms tend to be more feasible. Then, the overall design and engineering becomes more complicated than fixed platforms including the coupled dynamics of platforms, mooring lines, and blades. In the present study, a numerical time-domain model has been developed for the fully coupled dynamic analysis of an offshore floating wind turbine system including blade-rotor dynamics and platform motions. As a test case, the TLP-type floater system with 3 blades of 70-m diameter designed by the National Renewable Energy Laboratory (NREL) is selected to analyze the dynamic coupling effects among floating system, mooring lines, and wind turbine. The performance of the selected system in a typical wind-wave-current condition has been simulated and analyzed. A similar study for the floater and rotor coupled dynamic analysis was conducted by MIT and NREL. However, in the present case, the dynamic coupling between platform and mooring lines are also considered in addition to the rotor-floater dynamic coupling. It is seen that the rotor-floater coupling effects increase with wind velocity and blade size. The increased coupling effects tend to increase the dynamic tension of TLP tethers. The developed technology and numerical tool are applicable to the new offshore floating wind farms planned in the future.

Shim, Sangyun

2007-12-01T23:59:59.000Z

174

RWT TOOL: OFFSHORE WIND ENERGY MAPPING FROM SAR C. B. Hasager, M. Nielsen, M. B. Christiansen  

E-Print Network (OSTI)

RWT TOOL: OFFSHORE WIND ENERGY MAPPING FROM SAR C. B. Hasager, M. Nielsen, M. B. Christiansen Risø National Laboratory, Wind Energy Department, Roskilde, Denmark Email: charlotte.hasager@risoe.dk, morten by Risoe National Laboratory, Dept. of Wind Energy for assessment of offshore wind resource maps based

175

Importance of Thermal Effects and Sea Surface Roughness for Offshore Wind Resource Assessment  

E-Print Network (OSTI)

The economic feasibility of offshore wind power utilisation depends on the favourable wind conditions offshore as compared to sites on land. The higher wind speeds have to compensate the additional cost of offshore developments. However, not only the mean wind speed is different, but the whole flow regime, as can e.g. be seen in the vertical wind speed profile. The commonly used models to describe this profile have been developed mainly for land sites. Their applicability for wind power prediction at offshore sites is investigated using data from the measurement program Rdsand, located in the Danish Baltic Sea.

Bernhard Lange; Søren Larsen; Jørgen Højstrup Rebecca Barthelmie; Jørgen Højstrup; Rebecca Barthelmie; Bernhard Lange

2004-01-01T23:59:59.000Z

176

Department of Energy Awards $43 Million to Spur Offshore Wind Energy |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy Awards $43 Million to Spur Offshore Wind Department of Energy Awards $43 Million to Spur Offshore Wind Energy Department of Energy Awards $43 Million to Spur Offshore Wind Energy September 8, 2011 - 9:46am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu today announced $43 million over the next five years to speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy systems. The 41 projects across 20 states will advance wind turbine design tools and hardware, improve information about U.S. offshore wind resources, and accelerate the deployment of offshore wind by reducing market barriers such as supply chain development, transmission and infrastructure. The awards announced today will help the U.S. to compete in the global wind energy manufacturing sector, promote economic development and job creation, and

177

Department of Energy Awards $43 Million to Spur Offshore Wind Energy |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy Awards $43 Million to Spur Offshore Wind Department of Energy Awards $43 Million to Spur Offshore Wind Energy Department of Energy Awards $43 Million to Spur Offshore Wind Energy September 8, 2011 - 9:46am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu today announced $43 million over the next five years to speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy systems. The 41 projects across 20 states will advance wind turbine design tools and hardware, improve information about U.S. offshore wind resources, and accelerate the deployment of offshore wind by reducing market barriers such as supply chain development, transmission and infrastructure. The awards announced today will help the U.S. to compete in the global wind energy manufacturing sector, promote economic development and job creation, and

178

Doppler Lidar–Based Wind-Profile Measurement System for Offshore Wind-Energy and Other Marine Boundary Layer Applications  

Science Conference Proceedings (OSTI)

Accurate measurement of wind speed profiles aloft in the marine boundary layer is a difficult challenge. The development of offshore wind energy requires accurate information on wind speeds above the surface at least at the levels occupied by ...

Yelena L. Pichugina; Robert M. Banta; W. Alan Brewer; Scott P. Sandberg; R. Michael Hardesty

2012-02-01T23:59:59.000Z

179

Simulation-Length Requirements in the Loads Analysis of Offshore Floating Wind Turbines: Preprint  

SciTech Connect

The goal of this paper is to examine the appropriate length of a floating offshore wind turbine (FOWT) simulation - a fundamental question that needs to be answered to develop design requirements. To examine this issue, a loads analysis of an example FOWT was performed in FAST with varying simulation lengths. The offshore wind system used was the OC3-Hywind spar buoy, which was developed for use in the International Energy Agency Code Comparison Collaborative Project and supports NREL's offshore 5-megawatt baseline turbine. Realistic metocean data from the National Oceanic and Atmospheric Administration and repeated periodic wind files were used to excite the structure. The results of the analysis clearly show that loads do not increase for longer simulations. In regards to fatigue, a sensitivity analysis shows that the procedure used for counting half cycles is more important than the simulation length itself. Based on these results, neither the simulation length nor the periodic wind files affect response statistics and loads for FOWTs (at least for the spar studied here); a result in contrast to the offshore oil and gas industry, where running simulations of at least 3 hours in length is common practice.

Haid, L.; Stewart, G.; Jonkman, J.; Robertson, A.; Lackner, M.; Matha, D.

2013-06-01T23:59:59.000Z

180

Simulation-Length Requirements in the Loads Analysis of Offshore Floating Wind Turbines: Preprint  

DOE Green Energy (OSTI)

The goal of this paper is to examine the appropriate length of a floating offshore wind turbine (FOWT) simulation - a fundamental question that needs to be answered to develop design requirements. To examine this issue, a loads analysis of an example FOWT was performed in FAST with varying simulation lengths. The offshore wind system used was the OC3-Hywind spar buoy, which was developed for use in the International Energy Agency Code Comparison Collaborative Project and supports NREL's offshore 5-megawatt baseline turbine. Realistic metocean data from the National Oceanic and Atmospheric Administration and repeated periodic wind files were used to excite the structure. The results of the analysis clearly show that loads do not increase for longer simulations. In regards to fatigue, a sensitivity analysis shows that the procedure used for counting half cycles is more important than the simulation length itself. Based on these results, neither the simulation length nor the periodic wind files affect response statistics and loads for FOWTs (at least for the spar studied here); a result in contrast to the offshore oil and gas industry, where running simulations of at least 3 hours in length is common practice.

Haid, L.; Stewart, G.; Jonkman, J.; Robertson, A.; Lackner, M.; Matha, D.

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Assessment of Offshore Wind Energy Resources for the United States  

Wind Powering America (EERE)

Technical Report Technical Report NREL/TP-500-45889 June 2010 Assessment of Offshore Wind Energy Resources for the United States Marc Schwartz, Donna Heimiller, Steve Haymes, and Walt Musial National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-500-45889 June 2010 Assessment of Offshore Wind Energy Resources for the United States Marc Schwartz, Donna Heimiller, Steve Haymes, and Walt Musial Prepared under Task No. WE10.1211 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

182

Assessment of Offshore Wind Energy Resources for the United States  

SciTech Connect

This report summarizes the offshore wind resource potential for the contiguous United States and Hawaii as of May 2009. The development of this assessment has evolved over multiple stages as new regional meso-scale assessments became available, new validation data was obtained, and better modeling capabilities were implemented. It is expected that further updates to the current assessment will be made in future reports.

Schwartz, M.; Heimiller, D.; Haymes, S.; Musial, W.

2010-06-01T23:59:59.000Z

183

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis of Offshore Wind Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area W. Musial, D. Elliott, J. Fields, Z. Parker, and G. Scott Produced under direction of the Bureau of Ocean Energy Management (BOEM) by the National Renewable Energy Laboratory (NREL) under Interagency Agreement M13PG00002 and Task No WFS3.1000. Technical Report NREL/TP-5000-58091 April 2013 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Contract No. DE-AC36-08GO28308 National Renewable Energy Laboratory 15013 Denver West Parkway Golden, CO 80401 303-275-3000 * www.nrel.gov Analysis of Offshore Wind

184

Wind Farm Structures' Impact on Harmonic Emission and Grid Interaction  

E-Print Network (OSTI)

1 Wind Farm Structures' Impact on Harmonic Emission and Grid Interaction Lukasz Hubert Kocewiak, Jesper Hjerrild, Claus Leth Bak ABSTRACT HE impact of a wind farm's internal structures on harmonic in this paper. The largest wind farms in the world, Horns Rev 2 Offshore Wind Farm and Polish Karnice Onshore

Bak, Claus Leth

185

Modelling the Vertical Wind Speed and Turbulence Intensity Profiles at Prospective Offshore Wind Farm Sites  

E-Print Network (OSTI)

Monin-Obukhov theory predicts the well-known log-linear form of the vertical wind speed profile. A turbulence intensity profile can be estimated from this by assuming that the standard deviation of the wind speed is proportional to the friction velocity. Two parameters, namely the aerodynamic surface roughness length and the MoninObukhov length, are than needed to predict the vertical wind speed and turbulence intensity profiles from a measurement at one height. Different models to estimate these parameters for conditions important for offshore wind energy utilisation are compared and tested: Four models for the surface roughness and three methods to derive the Monin-Obukov-length from measurements. They have been tested with data from the offshore field measurement Rdsand by extrapolating the measured 10 m wind speed to 50 m height and comparing it with the measured 50 m wind speed.

Bernhard Lange; Søren Larsen; Jørgen Højstrup; Rebecca Barthelmie; Ulrich Focken

2002-01-01T23:59:59.000Z

186

New Facility to Shed Light on Offshore Wind Resource (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

As a pre-existing structure in a location with As a pre-existing structure in a location with excellent offshore wind resources, the Chesapeake Light Tower provides a cost-effective alternative to building a new platform large enough to support an 80- to 100-meter-tall meteorological tower. Photo by Rick Driscoll, NREL 25660 Chesapeake Light Tower facility will gather key data for unlocking the nation's vast offshore wind resource. According to the National Offshore Wind Strategy published by the U.S. Department of Energy (DOE) in 2011, the nation's offshore wind resource could supply 54 gigawatts of generat- ing capacity by 2030. However, to tap into that potential, more data on the nature of offshore wind resources and the ocean environment is needed. An opportunity to address this need was cre-

187

Low Wind Speed Technology Phase II: Offshore Floating Wind Turbine Concepts: Fully Coupled Dynamic Response Simulations; Massachusetts Institute of Technology  

SciTech Connect

This fact sheet describes a subcontract with Massachusetts Institute of Technology to study dynamic response simulations to evaluate floating platform concepts for offshore wind turbines.

2006-03-01T23:59:59.000Z

188

DOE to Develop Multi-Megawatt Offshore Wind Turbine with General Electric |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

to Develop Multi-Megawatt Offshore Wind Turbine with General to Develop Multi-Megawatt Offshore Wind Turbine with General Electric DOE to Develop Multi-Megawatt Offshore Wind Turbine with General Electric March 9, 2006 - 11:44am Addthis Contract Valued at $27 million, supports President Bush's Advanced Energy Initiative WASHINGTON, D.C. - The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) in Golden, Colorado, has signed a $27 million, multi-year contract with the General Electric Company (GE) to develop a new offshore wind power system over the next several years. Approximately $8 million of the offshore wind project will be cost-shared by DOE. "Offshore wind technology, another aspect of President Bush's Advanced Energy Initiative, can reduce our dependence on foreign energy sources as

189

New Report Shows Trend Toward Larger Offshore Wind Systems, with 11  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters October 23, 2013 - 10:52am Addthis The Energy Department today released a new report showing progress for the U.S. offshore wind energy market in 2012, including the completion of two commercial lease auctions for federal Wind Energy Areas and 11 commercial-scale U.S. projects representing over 3,800 megawatts (MW) of capacity reaching an advanced stage of development. Further, the report highlights global trends toward building offshore turbines in deeper waters and using larger, more efficient turbines in offshore wind farms, increasing the amount of electricity delivered to consumers.

190

Planning maritime logistics concepts for offshore wind farms: a newly developed decision support system  

Science Conference Proceedings (OSTI)

The wind industry is facing new, great challenges due to the planned construction of thousands of offshore wind turbines in the North and Baltic Sea. With increasing distances from the coast and rising sizes of the plants the industry has to face the ... Keywords: assembly, installation, installation vessel, logistics concepts, logistics strategies, maritime supply chain, offshore wind, production, simulation

Kerstin Lange; André Rinne; Hans-Dietrich Haasis

2012-09-01T23:59:59.000Z

191

Evolutionary computation approaches for real offshore wind farm layout: A case study in northern Europe  

Science Conference Proceedings (OSTI)

This paper presents the layout optimization of a real offshore wind farm in northern Europe, using evolutionary computation techniques. Different strategies for the wind farm design are tested, such as regular turbines layout or free turbines disposition ... Keywords: Evolutionary computation, Offshore wind farm design, Optimal layouts, Real case study

S. Salcedo-Sanz, D. Gallo-Marazuela, A. Pastor-SáNchez, L. Carro-Calvo, A. Portilla-Figueras, L. Prieto

2013-11-01T23:59:59.000Z

192

Offshore Wind Technologie GmbH OWT | Open Energy Information  

Open Energy Info (EERE)

Technologie GmbH OWT Technologie GmbH OWT Jump to: navigation, search Name Offshore Wind Technologie GmbH (OWT) Place Leer, Germany Zip 26789 Sector Wind energy Product Germany-based wind project developer. Coordinates 45.197795°, -83.728994° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.197795,"lon":-83.728994,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

193

41 Offshore Wind Power R&D Projects Receive Energy Department Funding  

Energy.gov (U.S. Department of Energy (DOE))

Department of Energy Awards $43 Million to speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy systems.

194

Landmark Report Analyzes Current State of U.S. Offshore Wind...  

NLE Websites -- All DOE Office Websites (Extended Search)

report assesses offshore wind technology challenges and potential risks and benefits. The National Renewable Energy Laboratory (NREL) recently published a new report that analyzes...

195

Dynamics Modeling and Loads Analysis of an Offshore Floating Wind Turbine  

SciTech Connect

This report describes the development, verification, and application of a comprehensive simulation tool for modeling coupled dynamic responses of offshore floating wind turbines.

Jonkman, J. M.

2007-12-01T23:59:59.000Z

196

Large-Scale Offshore Wind Power in the United States: Assessment of Opportunities and Barriers  

DOE Green Energy (OSTI)

This paper assesses the potential for U.S. offshore wind to meet the energy needs of many coastal and Great Lakes states.

Musial, W.; Ram, B.

2010-09-01T23:59:59.000Z

197

Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios  

SciTech Connect

This paper introduces a technique for digesting geospatial wind-speed data into areally defined -- country-level, in this case -- wind resource supply curves. We combined gridded wind-vector data for ocean areas with bathymetry maps, country exclusive economic zones, wind turbine power curves, and other datasets and relevant parameters to build supply curves that estimate a country's offshore wind resource defined by resource quality, depth, and distance-from-shore. We include a single set of supply curves -- for a particular assumption set -- and study some implications of including it in a global energy model. We also discuss the importance of downscaling gridded wind vector data to capturing the full resource potential, especially over land areas with complex terrain. This paper includes motivation and background for a statistical downscaling methodology to account for terrain effects with a low computational burden. Finally, we use this forum to sketch a framework for building synthetic electric networks to estimate transmission accessibility of renewable resource sites in remote areas.

Arent, D.; Sullivan, P.; Heimiller, D.; Lopez, A.; Eurek, K.; Badger, J.; Jorgensen, H. E.; Kelly, M.; Clarke, L.; Luckow, P.

2012-10-01T23:59:59.000Z

198

Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios  

DOE Green Energy (OSTI)

This paper introduces a technique for digesting geospatial wind-speed data into areally defined -- country-level, in this case -- wind resource supply curves. We combined gridded wind-vector data for ocean areas with bathymetry maps, country exclusive economic zones, wind turbine power curves, and other datasets and relevant parameters to build supply curves that estimate a country's offshore wind resource defined by resource quality, depth, and distance-from-shore. We include a single set of supply curves -- for a particular assumption set -- and study some implications of including it in a global energy model. We also discuss the importance of downscaling gridded wind vector data to capturing the full resource potential, especially over land areas with complex terrain. This paper includes motivation and background for a statistical downscaling methodology to account for terrain effects with a low computational burden. Finally, we use this forum to sketch a framework for building synthetic electric networks to estimate transmission accessibility of renewable resource sites in remote areas.

Arent, D.; Sullivan, P.; Heimiller, D.; Lopez, A.; Eurek, K.; Badger, J.; Jorgensen, H. E.; Kelly, M.; Clarke, L.; Luckow, P.

2012-10-01T23:59:59.000Z

199

Department of Energy Awards $43 Million to Spur Offshore Wind Energy, Wind Program Newsletter, September 2011 Edition (Brochure)  

DOE Green Energy (OSTI)

EERE Wind Program Quarterly Newsletter - September 2011. In September, the U.S. Department of Energy announced that it will award $43 million over the next five years to 41 projects across 20 states to speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy systems. The projects will advance wind turbine design tools and hardware, improve information about U.S. offshore wind resources, and accelerate the deployment of offshore wind by reducing market barriers such as supply chain development, transmission and infrastructure. The projects announced in September focus on approaches to advancing offshore technology and removing market barriers to responsible offshore wind energy deployment. Funding is subject to Congressional appropriations.

Not Available

2011-09-01T23:59:59.000Z

200

Extreme Winds and Wind Effects on Structures  

Science Conference Proceedings (OSTI)

Extreme Winds and Wind Effects on Structures. Description/Summary: The Building and Fire Research Laboratory has an ...

2010-10-04T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Ultrasonic thickness testing of aging offshore structures  

E-Print Network (OSTI)

The objectives of this thesis concern the use of ultrasonic thickness (UT) testing for use in the offshore industry. Evidence from prior studies conducted at Texas A&M University suggests that the corrosion on the surface of offshore structural members is not distributed in a random fashion. It was therefore desired to study the matter more extensively to 1) determine the feasibility of using ultrasonic thickness measurements for assessment of corroded members in offshore structures, 2) determine the amount of data needed for meaningful assessment, and 3) identify any common patterns of corrosion in offshore structural members, which might be used in designing a more effective assessment protocol. First, three specimens from an earlier study were available for use here. These "Riverside Specimens'' were subjected to extensive UT measurements. An important statistical tool, Analysis of Variance (ANOVA), was used to determine the probability that thickness variations along the length and around the circumference of each member could be a random event. Both longitudinal and circumferential non-random variations were found in some of these members. A study of reduced sample size confirmed that reduction of data caused more uncertainty in the results. Next, a field study was conducted on recently salvaged offshore jackets in Morgan City, LA. Six tubular bracing specimens (three horizontal, three diagonal) near the splash zone were evaluated. The statistical evidence for corrosion trends was found to be rather weak. Nonetheless, it was possible to make certain generalizations. In particular, the outside facing sections tend to be the most corroded (thinnest), while the surfaces toward the center of the structure tend to be the least corroded (thickest). This also agrees with industry observations. Finally, the effect of sample size on the detection of strength loss was observed. Using some basic assumptions regarding sample mean and standard deviation, it was shown that even with greatly reduced numbers of measurement points, one may still obtain reasonable estimates of critical thickness values corresponding to certain strength loss ratios.

Ellison, Brian Kirk

1999-01-01T23:59:59.000Z

202

Secretary Chu Unveils 41 New Offshore Wind Power R&D Projects  

Energy.gov (U.S. Department of Energy (DOE))

 The $43 million dollars in offshore wind funding Secretary Chu announced today is part of a coordinated federal strategy to put the nation's wind resources to work and support innovation and jobs...

203

Definition of a 5-MW Reference Wind Turbine for Offshore System Development  

SciTech Connect

This report describes a three-bladed, upwind, variable-speed, variable blade-pitch-to-feather-controlled multimegawatt wind turbine model developed by NREL to support concept studies aimed at assessing offshore wind technology.

Jonkman, J.; Butterfield, S.; Musial, W.; Scott, G.

2009-02-01T23:59:59.000Z

204

New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet)  

DOE Green Energy (OSTI)

Researchers at the National Renewable Energy Laboratory (NREL) developed a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology.

Not Available

2011-02-01T23:59:59.000Z

205

Large-Scale Offshore Wind Power in the United States: Executive Summary  

SciTech Connect

This document provides a summary of a 236-page NREL report that provides a broad understanding of today's offshore wind industry, the offshore wind resource, and the associated technology challenges, economics, permitting procedures, and potential risks and benefits.

Musial, W.; Ram, B.

2010-09-01T23:59:59.000Z

206

OC3 -- Benchmark Exercise of Aero-Elastic Offshore Wind Turbine Codes: Preprint  

DOE Green Energy (OSTI)

This paper introduces the work content and status of the first international investigation and verification of aero-elastic codes for offshore wind turbines as performed by the "Offshore Code Comparison Collaboration" (OC3) within the "IEA Wind Annex XXIII -- Subtask 2".

Passon, P.; Kuhn, M.; Butterfield, S.; Jonkman, J.; Camp, T.; Larsen, T. J.

2007-08-01T23:59:59.000Z

207

Abstract--The offshore wind farm with installed back-to-back power converter in wind turbines is studied. As an  

E-Print Network (OSTI)

is studied. As an example the Burbo Bank offshore wind farm with Siemens Wind Power wind turbines is taken are compared with measurement data from the Burbo Bank offshore wind farm. The delimitations of both power manufacturers such as General Electric (GE) Energy, Siemens Wind Power, Vestas Wind Systems or Gamesa use back

Bak, Claus Leth

208

Offshore wind project surges ahead in South Carolina | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Offshore wind project surges ahead in South Carolina Offshore wind project surges ahead in South Carolina Offshore wind project surges ahead in South Carolina October 12, 2010 - 10:00am Addthis Researchers pull buoys from waters off South Carolina's coast. The buoys collected wind speed measurements for the past year. | Photo courtesy of the Center for Marine and Wetland Studies Researchers pull buoys from waters off South Carolina's coast. The buoys collected wind speed measurements for the past year. | Photo courtesy of the Center for Marine and Wetland Studies Stephen Graff Former Writer & editor for Energy Empowers, EERE 6 buoys collected wind speeds off South Carolina coast Data collected helps determine possible location for an offshore wind farm DOE funded research for early stage of project In the parking lot of Coastal Carolina University's Center for Marine and

209

Strengthening Americas Energy Security with Offshore Wind (Fact Sheet) (Revised), Wind And Water Power Program (WWPP)  

NLE Websites -- All DOE Office Websites (Extended Search)

crane mounted on a barge designed for offshore crane mounted on a barge designed for offshore wind turbine installation lifts a rotor into place. Photo courtesy of © DOTI 2009-alpha ventus Offshore wind energy is a clean, domestic, renewable resource that can help the United States meet its critical energy, environmental, and economic challenges. By generating electricity from offshore wind turbines, the nation can reduce its greenhouse gas emissions, diversify its energy supply, provide cost-competitive electricity to key coastal regions, and help revitalize key sectors of its economy, including manufacturing. However, realizing these benefits will require overcoming key barriers to the development and deployment of offshore wind technology, including its relatively high cost of energy, technical challenges surrounding installation and

210

Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint  

DOE Green Energy (OSTI)

This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of the results through maps will be used to provide a qualitative description for planning and designing an offshore grid. ReEDS takes into account many factors in the process of siting offshore wind capacity, such as the quality of the resource, capital and O&M costs, interconnection costs, or variability metrics (wind capacity value, forecast error, expected curtailment). The effect of these metrics in the deployment of offshore wind will be analyzed through examples in the results.

Ibanez, E.; Mai, T.; Coles, L.

2012-09-01T23:59:59.000Z

211

Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint  

SciTech Connect

This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of the results through maps will be used to provide a qualitative description for planning and designing an offshore grid. ReEDS takes into account many factors in the process of siting offshore wind capacity, such as the quality of the resource, capital and O&M costs, interconnection costs, or variability metrics (wind capacity value, forecast error, expected curtailment). The effect of these metrics in the deployment of offshore wind will be analyzed through examples in the results.

Ibanez, E.; Mai, T.; Coles, L.

2012-09-01T23:59:59.000Z

212

WIND ENERGY STUDIES OFFSHORE USING SATELLITE REMOTE SENSING MERETE BRUUN CHRISTIANSEN  

E-Print Network (OSTI)

1 WIND ENERGY STUDIES OFFSHORE USING SATELLITE REMOTE SENSING MERETE BRUUN CHRISTIANSEN Wind Energy Dept., Risø National Laboratory Denmark Abstract The wind provides a rich energy source, which can from meteorological masts; thus the technique is promising in terms of future wind energy studies. 1

213

Long Island New York City Offshore Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Island New York City Offshore Wind Farm Island New York City Offshore Wind Farm Jump to: navigation, search Name Long Island New York City Offshore Wind Farm Facility Long Island New York City Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Long Island-New York City Offshore Wind Collaborative Developer Long Island Power Authority (LIPA) / ConEdison (now part of LINYCOffshore Wind C Energy Purchaser New York Power Authority Location Offshore from the Rockaway Peninsula NY Coordinates 40.41°, -73.72° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.41,"lon":-73.72,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

214

Offshore Wind Energy Permitting: A Survey of U.S. Project Developers  

DOE Green Energy (OSTI)

The U.S. Department of Energy (DOE) has adopted a goal to generate 20% of the nation’s electricity from wind power by 2030. Achieving this “20% Wind Scenario” in 2030 requires acceleration of the current rate of wind project development. Offshore wind resources contribute substantially to the nation’s wind resource, yet to date no offshore wind turbines have been installed in the U.S. Progress developing offshore wind projects has been slowed by technological challenges, uncertainties about impacts to the marine environment, siting and permitting challenges, and viewshed concerns. To address challenges associated with siting and permitting, Pacific Northwest National Laboratory (PNNL) surveyed offshore wind project developers about siting and project development processes, their experience with the environmental permitting process, and the role of coastal and marine spatial planning (CMSP) in development of the offshore wind industry. Based on the responses to survey questions, we identify several priority recommendations to support offshore wind development. Recommendations also include considerations for developing supporting industries in the U.S. and how to use Coastal and Marine Spatial Planning (CMSP) to appropriately consider ocean energy among existing ocean uses. In this report, we summarize findings, discuss the implications, and suggest actions to improve the permitting and siting process.

Van Cleve, Frances B.; Copping, Andrea E.

2010-11-30T23:59:59.000Z

215

Offshore Wind Project Surges Ahead in South Carolina | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Offshore Wind Project Surges Ahead in South Carolina Offshore Wind Project Surges Ahead in South Carolina Offshore Wind Project Surges Ahead in South Carolina October 13, 2010 - 11:21am Addthis Stephen Graff Former Writer & editor for Energy Empowers, EERE In the parking lot of Coastal Carolina University's Center for Marine and Wetland Studies (CMWS) in Conway, South Carolina, sit six buoys just back from sea. For 14 months, they were floating miles off the coasts of Myrtle Beach and Winyah Bay, as part of the Palmetto Wind Research Project in South Carolina, taking wind speed measurements for a study that could lay the foundation for an offshore wind farm. "It's been cooking along under the radar," said Paul Gayes, director of the CMWS, which partnered with local utility Santee Cooper. "We've

216

Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines: Preprint  

DOE Green Energy (OSTI)

FAST, developed by the National Renewable Energy Laboratory (NREL), is an aero-hydro-servo-elastic tool widely used for analyzing onshore and offshore wind turbines. This paper discusses recent modifications made to FAST to enable the examination of offshore wind turbines with fixed-bottom, multi-member support structures (which are commonly used in transitional-depth waters).; This paper addresses the methods used for incorporating the hydrostatic and hydrodynamic loading on multi-member structures in FAST through its hydronamic loading module, HydroDyn. Modeling of the hydrodynamic loads was accomplished through the incorporation of Morison and buoyancy loads on the support structures. Issues addressed include how to model loads at the joints of intersecting members and on tapered and tilted members of the support structure. Three example structures are modeled to test and verify the solutions generated by the modifications to HydroDyn, including a monopile, tripod, and jacket structure. Verification is achieved through comparison of the results to a computational fluid dynamics (CFD)-derived solution using the commercial software tool STAR-CCM+.

Song, H.; Robertson, A.; Jonkman, J.; Sewell, D.

2012-05-01T23:59:59.000Z

217

Assessment of Offshore Wind Energy Leasing Areas for the BOEM Maryland Wind Energy Area  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to identify and delineate leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM. This report focuses on NREL's evaluation of the delineation proposed by the Maryland Energy Administration (MEA) for the Maryland (MD) WEA and two alternative delineations. The objectives of the NREL evaluation were to assess MEA's proposed delineation of the MD WEA, perform independent analysis, and recommend how the MD WEA should be delineated.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.; Draxl, C.

2013-06-01T23:59:59.000Z

218

Assessment of Offshore Wind Energy Leasing Areas for the BOEM Maryland Wind Energy Area  

SciTech Connect

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to identify and delineate leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM. This report focuses on NREL's evaluation of the delineation proposed by the Maryland Energy Administration (MEA) for the Maryland (MD) WEA and two alternative delineations. The objectives of the NREL evaluation were to assess MEA's proposed delineation of the MD WEA, perform independent analysis, and recommend how the MD WEA should be delineated.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.; Draxl, C.

2013-06-01T23:59:59.000Z

219

DOE Announces Webinars on Economic Impacts of Offshore Wind, Clean Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Economic Impacts of Offshore Wind, Clean Economic Impacts of Offshore Wind, Clean Energy Financing Programs, and More DOE Announces Webinars on Economic Impacts of Offshore Wind, Clean Energy Financing Programs, and More November 7, 2013 - 4:12pm Addthis EERE offers webinars to the public on a range of subjects, from adopting the latest energy efficiency and renewable energy technologies to training for the clean energy workforce. Webinars are free; however, advanced registration is typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts. Upcoming Webinars November 20: Live Webinar on Jobs and Economic Development Impacts of Offshore Wind Webinar Sponsor: EERE's Wind and Water Power Technologies Office The Energy Department will present a live webinar titled "Jobs and Economic

220

Maine Project Launches First Grid-Connected Offshore Wind Turbine in the  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Maine Project Launches First Grid-Connected Offshore Wind Turbine Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. Maine Project Launches First Grid-Connected Offshore Wind Turbine in the U.S. May 31, 2013 - 11:00am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today recognized the nation's first grid-connected offshore floating wind turbine prototype off the coast of Castine, Maine. Led by the University of Maine, this project represents the first concrete-composite floating platform wind turbine to be deployed in the world - strengthening American leadership in innovative clean energy technologies that diversify the nation's energy mix with more clean, domestic energy sources. "Developing America's vast renewable energy resources is an important part of the Energy Department's all-of-the-above strategy to pave the way

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Potential Economic Impacts from Offshore Wind in the Gulf of Mexico Region (Fact Sheet)  

SciTech Connect

Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economic Development Impacts (JEDI) model, developed by the National Renewable Energy Laboratory. This fact sheet summarizes the potential economic impacts for the Gulf of Mexico region.

Flores, F.; Keyser, D.; Tegen, S.

2014-01-01T23:59:59.000Z

222

Slow motion responses of compliant offshore structures  

E-Print Network (OSTI)

An efficient method is developed to predict slow motion responses of slender compliant offshore structures in the unidirectional irregular waves and currents. The environmental loads are computed using the modified Morison equation based on slender-body approximation. The Hybrid Wave Model, which considers the nonlinear wave-wave interactions, is used to predict wave kinematics accurately up to the second order of wave steepness. Other second-order forces due to convective acceleration, free-surface fluctuation, time-varying structural displacement and axial divergence effects are also included. An iterative-incremental Newmark-,3 scheme is employed to simulate the structural responses in the time domain. It is observed that the predicted slow-drift motions of a Joint, Industry Project Spar and a Floating Jacket Platform are in excellent agreement with the model test measurements. However, the predicted slow-drift motions using Wheeler Stretching and Linear Extrapolation wave kinematics models do not agree with the measurements well.

Cao, Peimin

1996-01-01T23:59:59.000Z

223

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND  

E-Print Network (OSTI)

Control and Protection of Wind Power Plants with VSC-HVDC Connection By Sanjay K Chaudhary. VSC-HVDC cable transmission is a favourable option for a large and remote offshore wind power plant of a potential wind power plant with VSC-HVDC connection to the onshore grid. The test system is modelled

Chaudhary, Sanjay

224

Static Analysis on the Detached Column Substructure of Offshore Wind Power Based on Ansys  

Science Conference Proceedings (OSTI)

With the rapid development of wind power technology, offshore wind power has become one of the hottest topics in the world’s energy field. Basic research on wind power attracts more and more attention. This paper uses Ansys software to do static ... Keywords: ansys, etached column, extreme environmental loads, static analysis

Li Fenhua; Guo Weizhao; Liu Yuan; Xing Jian

2010-06-01T23:59:59.000Z

225

World Energy Congress, Sydney, Australia September 5-9, 2004 OFFSHORE WIND POWER: EASING A RENEWABLE  

E-Print Network (OSTI)

19 th World Energy Congress, Sydney, Australia September 5-9, 2004 1 OFFSHORE WIND POWER: EASING to an investment of approximately 40 billion . The global wind energy installed capacity has increased exponentially over a 25-year period and in the process the cost of energy from wind power plants has been

226

2011 Grants for Offshore Wind Power | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wind Manufacturing Facilities Wind Manufacturing Facilities Testing America's Wind Turbines Testing America's Wind Turbines U.S. Hydropower Potential from Existing Non-powered Dams...

227

Effect of Second-Order Hydrodynamics on Floating Offshore Wind Turbines: Preprint  

DOE Green Energy (OSTI)

Offshore winds are generally stronger and more consistent than winds on land, making the offshore environment attractive for wind energy development. A large part of the offshore wind resource is however located in deep water, where floating turbines are the only economical way of harvesting the energy. The design of offshore floating wind turbines relies on the use of modeling tools that can simulate the entire coupled system behavior. At present, most of these tools include only first-order hydrodynamic theory. However, observations of supposed second-order hydrodynamic responses in wave-tank tests performed by the DeepCwind consortium suggest that second-order effects might be critical. In this paper, the methodology used by the oil and gas industry has been modified to apply to the analysis of floating wind turbines, and is used to assess the effect of second-order hydrodynamics on floating offshore wind turbines. The method relies on combined use of the frequency-domain tool WAMIT and the time-domain tool FAST. The proposed assessment method has been applied to two different floating wind concepts, a spar and a tension-leg-platform (TLP), both supporting the NREL 5-MW baseline wind turbine. Results showing the hydrodynamic forces and motion response for these systems are presented and analysed, and compared to aerodynamic effects.

Roald, L.; Jonkman, J.; Robertson, A,; Chokani, N.

2013-07-01T23:59:59.000Z

228

EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

92-S1: University of Maine's Deepwater Offshore Floating Wind 92-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine Harbor Test Site EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine Harbor Test Site SUMMARY This Supplemental EA in a evaluates the environmental impacts of the University of Maine proposal to use Congressionally directed federal funding, from DOE, to deploy, test and retrieve one 1/8-scale floating wind turbine (20kw) prototype in Castine Harbor, offshore of Castine, Maine. This test would be conducted prior to testing at the site 2 miles from Monhegan Island (evaluated under DOE EA-1792). PUBLIC COMMENT OPPORTUNITIES No public comment opportunities at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD

229

A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines  

E-Print Network (OSTI)

Ocean energy is one of the most important sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear ...

Lee, Sungho, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

230

Offshore-Directed Winds in the Vicinity of Prince William Sound, Alaska  

Science Conference Proceedings (OSTI)

The thermal contrast between cold air over continental Alaska and relatively warm marine air over the Gulf of Alaska causes frequent, low-level, offshore-directed winds over the south-central Alaskan coast during the cold season. Coastal ...

S. Allen Macklin; Gary M. Lackmann; Judith Gray

1988-06-01T23:59:59.000Z

231

A Study of Wind Stress Determination Methods from a Ship and an Offshore Tower  

Science Conference Proceedings (OSTI)

Comparisons are made between surface wind stress measurements obtained by the inertial-dissipation and direct covariance methods on a stable offshore tower and by the inertial-dissipation and bulk methods on a ship. The shipboard inertial-...

Paul A. Frederickson; Kenneth L. Davidson; James B. Edson

1997-08-01T23:59:59.000Z

232

Correction of Land-Based Wind Data for Offshore Applications: A Further Evaluation  

Science Conference Proceedings (OSTI)

A formula that linearly relates the difference in wind speed between onshore and offshore regions, as tested successfully in the Great Lakes region, has been revised and extended to other parts of the world. This formula is further substantiated ...

S. A. Hsu

1986-02-01T23:59:59.000Z

233

Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation: Preprint  

SciTech Connect

This paper presents the use of fully coupled aero-hydro-servo-elastic simulation tools to perform a loads analysis of a 5-MW offshore wind turbine supported by a barge with moorings, one of many promising floating platform concepts.

Jonkman, J. M.; Buhl, M. L., Jr.

2007-06-01T23:59:59.000Z

234

Offshore Code Comparison Collaboration within IEA Wind Annex XXIII: Phase II Results Regarding Monopile Foundation Modeling  

SciTech Connect

This paper presents an overview and describes the latest findings of the code-to-code verification activities of the Offshore Code Comparison Collaboration, which operates under Subtask 2 of the International Energy Agency Wind Annex XXIII.

Jonkman, J.; Butterfield, S.; Passon, P.; Larsen, T.; Camp, T.; Nichols, J.; Azcona, J.; Martinez, A.

2008-01-01T23:59:59.000Z

235

TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE  

E-Print Network (OSTI)

TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE Anthony L. Rogers, Ph.D. James F. Manwell, Ph.D. Anthony Ellis, M.S. Renewable Energy Research Lab University

Massachusetts at Amherst, University of

236

Jobs and Economic Development Impact (JEDI) Model: Offshore Wind User Reference Guide  

DOE Green Energy (OSTI)

The Offshore Wind Jobs and Economic Development Impact (JEDI) model, developed by NREL and MRG & Associates, is a spreadsheet based input-output tool. JEDI is meant to be a user friendly and transparent tool to estimate potential economic impacts supported by the development and operation of offshore wind projects. This guide describes how to use the model as well as technical information such as methodology, limitations, and data sources.

Lantz, E.; Goldberg, M.; Keyser, D.

2013-06-01T23:59:59.000Z

237

DOE provides detailed offshore wind resource maps - Today in ...  

U.S. Energy Information Administration (EIA)

Includes hydropower, solar, wind, geothermal, biomass and ethanol. ... Wind energy potential is broken down by wind speed, water depth, and distance from shore.

238

Assessment of the Southern New England Offshore Wind Energy Resource James F. Manwell, Anthony Rogers, Jon G. McGowan  

E-Print Network (OSTI)

1 Assessment of the Southern New England Offshore Wind Energy Resource James F. Manwell, Anthony of the wind energy resource off the coast of southern New England. This work is being undertaken to determine the potential for the near term development of offshore wind energy projects in that region. The work summarized

Massachusetts at Amherst, University of

239

Assessment of Offshore Wind Energy Leasing Areas for the BOEM New Jersey Wind Energy Area  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the U.S. Department of the Interior's Bureau of Ocean Energy Management (BOEM), is providing technical assistance to identify and delineate leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM. This report focuses on NREL's development and evaluation of the delineations for the New Jersey (NJ) WEA. The overarching objective of this study is to develop a logical process by which the New Jersey WEA can be subdivided into non-overlapping leasing areas for BOEM's use in developing an auction process in a renewable energy lease sale. NREL identified a selection of leasing areas and proposed delineation boundaries within the established NJ WEA. The primary output of the interagency agreement is this report, which documents the methodology, including key variables and assumptions, by which the leasing areas were identified and delineated.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.; Draxl, C.

2013-10-01T23:59:59.000Z

240

Environmental Risk Evaluation System (ERES) for Offshore Wind - Mock-Up of ERES, Fiscal Year 2010 Progress Report  

DOE Green Energy (OSTI)

The Environmental Risk Evaluation System (ERES) has been created to set priorities among the environmental risks from offshore wind development. This report follows the conceptual design for ERES and shows what the system would look like, using a web interface created as part of a Knowledge Management System (KMS) for offshore wind. The KMS, called Zephyrus, and ERES for offshore wind, will be populated and made operational in a later phase of the project.

Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to BOEM on the identification and delineation of offshore leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM in 2012. This report focuses on NREL's evaluation of BOEM's Rhode Island/Massachusetts (RIMA) WEA leasing areas. The objective of the NREL evaluation was to assess the proposed delineation of the two leasing areas and determine if the division is reasonable and technically sound. Additionally, the evaluation aimed to identify any deficiencies in the delineation. As part of the review, NREL performed the following tasks: 1. Performed a limited review of relevant literature and RIMA call nominations. 2. Executed a quantitative analysis and comparison of the two proposed leasing areas 3. Conducted interviews with University of Rhode Island (URI) staff involved with the URI Special Area Management Plan (SAMP) 4. Prepared this draft report summarizing the key findings.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.

2013-04-01T23:59:59.000Z

242

Analysis of Offshore Wind Energy Leasing Areas for the Rhode Island/Massachusetts Wind Energy Area  

SciTech Connect

The National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to BOEM on the identification and delineation of offshore leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM in 2012. This report focuses on NREL's evaluation of BOEM's Rhode Island/Massachusetts (RIMA) WEA leasing areas. The objective of the NREL evaluation was to assess the proposed delineation of the two leasing areas and determine if the division is reasonable and technically sound. Additionally, the evaluation aimed to identify any deficiencies in the delineation. As part of the review, NREL performed the following tasks: 1. Performed a limited review of relevant literature and RIMA call nominations. 2. Executed a quantitative analysis and comparison of the two proposed leasing areas 3. Conducted interviews with University of Rhode Island (URI) staff involved with the URI Special Area Management Plan (SAMP) 4. Prepared this draft report summarizing the key findings.

Musial, W.; Elliott, D.; Fields, J.; Parker, Z.; Scott, G.

2013-04-01T23:59:59.000Z

243

Design Optimisation Of An Offshore Wind Energy Converter By Means Of Tailored Dynamics  

E-Print Network (OSTI)

Tailoring the dynamics of an offshore wind energy converter can offer an effective design optimisation during the successive stages of the design process. Concerning the particular problem of fatigue due to combined wind and wave loading two simplified approaches are proposed and demonstrated which are well suited for the early design stages when integrated, non-linear time domain simulations are too cumbersome. This enables the use of standard design tools from the wind energy and offshore technology communities by superposition of separate analyses of hydrodynamic fatigue in the frequency domain and aerodynamic fatigue in the time domain.

M. Kühn

1999-01-01T23:59:59.000Z

244

Innovative Deepwater Platform Aims to Harness Offshore Wind and Wave Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Deepwater Platform Aims to Harness Offshore Wind and Deepwater Platform Aims to Harness Offshore Wind and Wave Power Innovative Deepwater Platform Aims to Harness Offshore Wind and Wave Power March 28, 2011 - 5:55pm Addthis An employee installs a smart meter as part of a smart grid initiative by EPB. The project is supporting 390 jobs in the Chattanooga area. | Photo courtesy of EPB An employee installs a smart meter as part of a smart grid initiative by EPB. The project is supporting 390 jobs in the Chattanooga area. | Photo courtesy of EPB Mark Higgins Operations Supervisor, Wind & Water Power Technologies Office Principle Power, Inc, of Seattle is using $1.4 million in funding from the Department of Energy's Office of Energy Efficiency and Renewable Energy to develop an innovative technology with the potential to generate electricity

245

Offshore Wind Plant Balance-of-Station Cost Drivers and Sensitivities (Poster)  

DOE Green Energy (OSTI)

With Balance of System (BOS) costs contributing up to 70% of the installed capital cost, it is fundamental to understanding the BOS costs for offshore wind projects as well as potential cost trends for larger offshore turbines. NREL developed a BOS model using project cost estimates developed by GL Garrad Hassan. Aspects of BOS covered include engineering and permitting, ports and staging, transportation and installation, vessels, foundations, and electrical. The data introduce new scaling relationships for each BOS component to estimate cost as a function of turbine parameters and size, project parameters and size, and soil type. Based on the new BOS model, an analysis to understand the non-turbine costs associated with offshore turbine sizes ranging from 3 MW to 6 MW and offshore wind plant sizes ranging from 100 MW to 1000 MW has been conducted. This analysis establishes a more robust baseline cost estimate, identifies the largest cost components of offshore wind project BOS, and explores the sensitivity of the levelized cost of energy to permutations in each BOS cost element. This presentation shows results from the model that illustrates the potential impact of turbine size and project size on the cost of energy from US offshore wind plants.

Saur, G.; Maples, B.; Meadows, B.; Hand, M.; Musial, W.; Elkington, C.; Clayton, J.

2012-09-01T23:59:59.000Z

246

Integrating Offshore Wind Power and Multiple Oil and Gas Platforms to the Onshore Power Grid using VSC-HVDC Technology.  

E-Print Network (OSTI)

?? This thesis investigates the possibilities of integrating oil and gas platforms and offshore wind power to the onshore power grid. The main motivation for… (more)

Kolstad, Magne Lorentzen

2013-01-01T23:59:59.000Z

247

Coupled Dynamic Analysis of Large-Scale Mono-Column Offshore Wind Turbine with a Single Tether Hinged in Seabed  

E-Print Network (OSTI)

The increased interest in the offshore wind resource in both industry and academic and the extension of the wind field where offshore wind turbine can be deployed has stimulated quite a number of offshore wind turbines concepts. This thesis presents a design of mono-column platform supported for 5 MW baseline wind turbine developed by the National Renewable Energy Laboratory (NREL), with a single tether anchored to the seabed. The design, based on the pioneer concept SWAY, results from parametric optimized design processes which account for important design considerations in the static and dynamic view, such as the stability, natural frequency, performance requirements as well as the economic feasibility. Fully coupled aero-hydro-servo-elastic model is established in the time-domain simulation tool FAST (Fatigue, Aerodynamics, Structures, and Turbulence) with the hydrodynamic coefficients from HydroGen, an indoor program providing same outputs as the commercial software WAMIT. The optimized model is verified by imitating the frequency-domain approach in FAST and thus comparing the results with the frequency-domain calculations. A number of simulations with various wind and wave conditions are run to explore the effect of wind speed and wave significant height in various water depths. By modifying the optimized model to a downwind turbine with the nacelle rigidly mounted on the tower and the single tether connected to the platform by a subsea swivel, the modified models are more closed to the original SWAY-concept wind turbine. These models are compared based on the platform motion, tether tension, displacement, nacelle velocity and acceleration, resonant behavior as well as the damping of the coupled systems. The results of these comparisons prove the advantage of the modified model in performance. The modified model has also clarified itself a good candidate for deep water deployment.

Chen, Jieyan

2012-08-01T23:59:59.000Z

248

Sensitivity Analysis of Offshore Wind Cost of Energy (Poster), NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

Plant Sensitivity Analysis Plant Sensitivity Analysis Abstract NREL Wind Energy Systems Engineering Tool Sensitivity Analysis and Results Sensitivity Analysis of Offshore Wind Cost of Energy Sensitivity Analysis of Offshore Wind Cost of Energy K. Dykes, A. Ning, P. Graf, G. Scott, R. Damiani, M. Hand, R. Meadows, W. Musial, P. Moriarty, P. Veers * National Renewable Energy Laboratory * Golden, Colorado K. Dykes, A. Ning, P. Graf, G. Scott, R. Damiani, M. Hand, R. Meadows, W. Musial, P. Moriarty, P. Veers * National Renewable Energy Laboratory * Golden, Colorado Introduction OFFSHORE WINDPOWER 2012, Virginia Beach, October 911, 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. NREL/PO-5000-56411

249

Potential Economic Impacts from Offshore Wind in the Southeast Region (Fact Sheet)  

SciTech Connect

Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economic Development Impacts (JEDI) model, developed by the National Renewable Energy Laboratory. This fact sheet summarizes the potential economic impacts identified by the study for the Southeast (defined here as Georgia, South Carolina, North Carolina, and Virginia).

2013-07-01T23:59:59.000Z

250

Evaluation Of Models For The Vertical Extrapolation Of Wind Speed Measurements At Offshore Sites  

E-Print Network (OSTI)

Monin-Obukhov theory predicts the well-known log-linear form of the vertical wind speed profile. Two parameters, namely the aerodynamic surface roughness length and the Monin-Obukhov-length, are needed to predict the vertical wind speed profile from a measurement at one height. Different models to estimate these parameters for conditions important for offshore wind energy utilisation are discussed and tested: Four models for the surface roughness and three methods to derive the Monin-Obukov-length from measurements are compared. They have been tested with data from the offshore field measurement Rdsand by extrapolating the measured 10 m wind speed to 50 m height and comparing it with the measured 50 m wind speed. The mean

Bernhard Lange; Jørgen Højstrup; Søren Larsen; Rebecca Barthelmie

2001-01-01T23:59:59.000Z

251

Grid Simulator for Testing a Wind Turbine on Offshore Floating Platform  

DOE Green Energy (OSTI)

An important aspect of such offshore testing of a wind turbine floating platform is electrical loading of the wind turbine generator. An option of interconnecting the floating wind turbine with the onshore grid via submarine power cable is limited by many factors such as costs and associated environmental aspects (i.e., an expensive and lengthy sea floor study is needed for cable routing, burial, etc). It appears to be a more cost effective solution to implement a standalone grid simulator on a floating platform itself for electrical loading of the test wind turbine. Such a grid simulator must create a stable fault-resilient voltage and frequency bus (a micro grid) for continuous operation of the test wind turbine. In this report, several electrical topologies for an offshore grid simulator were analyzed and modeled.

Gevorgian, V.

2012-02-01T23:59:59.000Z

252

Installation, Operation, and Maintenance Strategies to Reduce the Cost of Offshore Wind Energy  

DOE Green Energy (OSTI)

Currently, installation, operation, and maintenance (IO&M) costs contribute approximately 30% to the LCOE of offshore wind plants. To reduce LCOE while ensuring safety, this paper identifies principal cost drivers associated with IO&M and quantifies their impacts on LCOE. The paper identifies technology improvement opportunities and provides a basis for evaluating innovative engineering and scientific concepts developed subsequently to the study. Through the completion of a case study, an optimum IO&M strategy for a hypothetical offshore wind project is identified.

Maples, B.; Saur, G.; Hand, M.; van de Pieterman, R.; Obdam, T.

2013-07-01T23:59:59.000Z

253

Design Considerations for Monopile Founded Offshore Wind Turbines Subject to Breaking Waves  

E-Print Network (OSTI)

The majority of offshore wind farms utilize monopile substructures. As these wind farms are typically located in water depths less than 30 meters, the effect of breaking waves on these structures is of great concern to design engineers. This research investigation examines many of the practical considerations and alternative ways of estimating breaking wave forces. A survey of existing European wind farms is used to establish a realistic range of basic design parameters. Based upon this information a parametric study was pursued and a series of realistic design scenarios were evaluated. Comparisons include the sensitivity to the wave force model as well as to analytical and numerical wave theories used to evaluate the wave kinematics. In addition, the effect of different kinematics stretching techniques for linear waves is addressed. Establishing whether the bathymetry will induce spilling or plunging wave breaking is critical. Spilling wave breaking can be addressed using existing wave and wave force theories; however for plunging wave breaking an additional impact force must be introduced. Dimensionless design curves are used to display pertinent trends across the full range of design cases considered. This research study provides insight into the evaluation of the maximum breaking wave forces and overturning moment for both spilling and plunging breaking waves as a function of bottom slope.

Owens, Garrett 1987-

2012-12-01T23:59:59.000Z

254

OpenEI - offshore  

Open Energy Info (EERE)

http:en.openei.orgdatasetstaxonomyterm3220 en NREL GIS Data: Global Offshore Wind http:en.openei.orgdatasetsnode869

GIS data for offshore wind speed (meters...

255

Extended tension leg platform design for offshore wind turbine systems  

E-Print Network (OSTI)

The rise of reliable wind energy application has become a primary alternative to conventional fossil fuel power plants in the United States and around the world. The feasibility of building large scale wind farms has become ...

Parker, Nicholas W. (Nicholas William)

2007-01-01T23:59:59.000Z

256

Modal Dynamics of Large Wind Turbines with Different Support Structures  

SciTech Connect

This paper presents modal dynamics of floating-platform-supported and monopile-supported offshore wind turbines.

Bir, G.; Jonkman, J.

2008-07-01T23:59:59.000Z

257

Multibody Dynamics Using Conservation of Momentum with Application to Compliant Offshore Floating Wind Turbines  

E-Print Network (OSTI)

Environmental, aesthetic and political pressures continue to push for siting off-shore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating structures is likely to be considered. Savings could potentially be realized by reducing hull size, which would allow more compliance with the wind thrust force in the pitch direction. On the other hand, these structures with large-amplitude motions will make dynamic analysis both more challenging and more critical. Prior to the present work, there were no existing dynamic simulation tools specifically intended for compliant wind turbine design. Development and application of a new computational method underlying a new time-domain simulation tool is presented in this dissertation. The compliant floating wind turbine system is considered as a multibody system including tower, nacelle, rotor and other moving parts. Euler's equations of motion are first applied to the compliant design to investigate the large-amplitude motions. Then, a new formulation of multibody dynamics is developed through application of the conservation of both linear momentum and angular momentum to the entire system directly. A base body is prescribed within the compliant wind turbine system, and the equations of motion (EOMs) of the system are projected into the coordinate system associated with this body. Only six basic EOMs of the system are required to capture 6 unknown degrees of freedom (DOFs) of the base body when mechanical DOFs between contiguous bodies are prescribed. The 6 x 6 mass matrix is actually composed of two decoupled 3 x 3 mass matrices for translation and rotation, respectively. Each element within the matrix includes the inertial effects of all bodies. This condensation decreases the coupling between elements in the mass matrix, and so minimizes the computational demand. The simulation results are verified by critical comparison with those of the popular wind turbine dynamics software FAST. The new formulation is generalized to form the momentum cloud method (M- CM), which is particularly well suited to the serial mechanical N-body systems connected by revolute joints with prescribed relative rotation. The MCM is then expanded to multibody systems with more complicated joints and connection types.

Wang, Lei

2012-08-01T23:59:59.000Z

258

Jobs and Economic Development Impacts of Offshore Wind Webinar Text Version  

Wind Powering America (EERE)

Impacts of Offshore Wind Impacts of Offshore Wind November 20, 2013 Coordinator: Thank you all for standing by. All lines have been placed on a listen-only mode throughout the duration of today's conference. Today's conference is being recorded. If you do have any objections, you may disconnect at this time. I would now like to turn the call over to Ian Baring-Gould. Thank you. You may begin. Ian Baring-Gould: Hi, this is Ian Baring-Gould from the National Renewable Energy Laboratory. I want to thank you all for joining us for our call - or on our webinar today. This is our standard monthly series of webinars for the stakeholder engagement and outreach activities of the wind program under the Department of Energy. And pleased today that we get to have a series of presentations on a

259

Dynamic analysis of a 5 megawatt offshore floating wind turbine  

E-Print Network (OSTI)

of wind turbine. Rating Control Rotor Radius Rated Windturbines is a major design consideration due to cyclic loading induced by the rotating rotors [the turbine. The base was assumed to be fixed and the rotor

Harriger, Evan Michael

2011-01-01T23:59:59.000Z

260

Potential Economic Impacts from Offshore Wind in the Southeast...  

Wind Powering America (EERE)

Induced Impacts 170 2,760 Total Impacts during Operation 410 6,700 The U.S. DOE Wind & Water Power Technologies Office funded James Madison University and the National Renewable...

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Variable Frequency Operations of an Offshore Wind Power Plant with HVDC-VSC: Preprint  

DOE Green Energy (OSTI)

In this paper, a constant Volt/Hz operation applied to the Type 1 wind turbine generator. Various control aspects of Type 1 generators at the plant level and at the turbine level will be investigated. Based on DOE study, wind power generation may reach 330 GW by 2030 at the level of penetration of 20% of the total energy production. From this amount of wind power, 54 GW of wind power will be generated at offshore wind power plants. The deployment of offshore wind power plants requires power transmission from the plant to the load center inland. Since this power transmission requires submarine cable, there is a need to use High-Voltage Direct Current (HVDC) transmission. Otherwise, if the power is transmitted via alternating current, the reactive power generated by the cable capacitance may cause an excessive over voltage in the middle of the transmission distance which requires unnecessary oversized cable voltage breakdown capability. The use of HVDC is usually required for transmission distance longer than 50 kilometers of submarine cables to be economical. The use of HVDC brings another advantage; it is capable of operating at variable frequency. The inland substation will be operated to 60 Hz synched with the grid, the offshore substation can be operated at variable frequency, thus allowing the wind power plant to be operated at constant Volt/Hz. In this paper, a constant Volt/Hz operation applied to the Type 1 wind turbine generator. Various control aspects of Type 1 generators at the plant level and at the turbine level will be investigated.

Gevorgian, V.; Singh, M.; Muljadi, E.

2011-12-01T23:59:59.000Z

262

OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY  

E-Print Network (OSTI)

one year's worth of hourly site & time-specific data including electrical demand PV and off-shore wind is based upon the analysis of one year worth of hourly data ­ 2010 -- including New York City's electrical demand, distributed PV generation, and off- shore wind generation. PV and wind generation data

Perez, Richard R.

263

Final Report DE-EE0005380: Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems  

SciTech Connect

Offshore wind energy is a valuable resource that can provide a significant boost to the US renewable energy portfolio. A current constraint to the development of offshore wind farms is the potential for interference to be caused by large wind farms on existing electronic and acoustical equipment such as radar and sonar systems for surveillance, navigation and communications. The US Department of Energy funded this study as an objective assessment of possible interference to various types of equipment operating in the marine environment where offshore wind farms could be installed. The objective of this project was to conduct a baseline evaluation of electromagnetic and acoustical challenges to sea surface, subsurface and airborne electronic systems presented by offshore wind farms. To accomplish this goal, the following tasks were carried out: (1) survey electronic systems that can potentially be impacted by large offshore wind farms, and identify impact assessment studies and research and development activities both within and outside the US, (2) engage key stakeholders to identify their possible concerns and operating requirements, (3) conduct first-principle modeling on the interactions of electromagnetic signals with, and the radiation of underwater acoustic signals from, offshore wind farms to evaluate the effect of such interactions on electronic systems, and (4) provide impact assessments, recommend mitigation methods, prioritize future research directions, and disseminate project findings. This report provides a detailed description of the methodologies used to carry out the study, key findings of the study, and a list of recommendations derived based the findings.

Ling, Hao [The University of Texas at Austin] [The University of Texas at Austin; Hamilton, Mark F. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Bhalla, Rajan [Science Applications International Corporation] [Science Applications International Corporation; Brown, Walter E. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Hay, Todd A. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Whitelonis, Nicholas J. [The University of Texas at Austin] [The University of Texas at Austin; Yang, Shang-Te [The University of Texas at Austin] [The University of Texas at Austin; Naqvi, Aale R. [The University of Texas at Austin] [The University of Texas at Austin

2013-09-30T23:59:59.000Z

264

Capital Energy Offshore | Open Energy Information  

Open Energy Info (EERE)

Offshore Jump to: navigation, search Name Capital Energy Offshore Place Spain Sector Wind energy Product JV between Gamesa and Capital Energy to develop offshore wind farms...

265

COMPARISON OF WIND CONDITIONS OF OFFSHORE WIND FARM SITES IN THE BALTIC AND NORTH SEA  

E-Print Network (OSTI)

worden tot 44%. #12;Windenergie Nederland heeft als ambitie in 2020 tussen de 15 en 20% van de grote Nederlandse offshore industrie. Wat doet de TU Delft? Ontwerpen van windturbines Windturbines rotoren ontworpen. Betrouwbaarheid, intelligent onderhoud van windturbines Offshore windtechnologie en

Heinemann, Detlev

266

Estimation of Offshore Wind Resources in Coastal Waters off Shirahama Using ENVISAT ASAR Images  

E-Print Network (OSTI)

Abstract: Offshore wind resource maps for the coastal waters off Shirahama, Japan were made based on 104 images of the Advanced Synthetic Aperture Radar (ASAR) onboard the ENVISAT satellite. Wind speed fields were derived from the SAR images with the geophysical model function CMOD5.N. Mean wind speed and energy density were estimated using the Weibull distribution function. These accuracies were examined in comparison with in situ measurements from the Shirahama offshore platform and the Southwest Wakayama buoy (SW-buoy). Firstly, it was found that the SAR-derived 10 m-height wind speed had a bias of 0.52 m/s and a RMSE of 2.33 m/s at Shirahama. Secondly, it was found that the mean wind speeds estimated from SAR images and the Weibull distribution function were overestimated at both sites. The ratio between SAR-derived and in situ measured mean wind speeds at Shirahama is 1.07, and this value was used for a long-termRemote Sens. 2013, 5 2884

Yuko Takeyama; Teruo Ohsawa; Tomohiro Yamashita; Katsutoshi Kozai; Yasunori Muto; Yasuyuki Baba; Koji Kawaguchi

2013-01-01T23:59:59.000Z

267

Final Summary Report: Em-Powering Coastal States and Utilities through Model Offshore Wind Legislation and Outreach  

DOE Green Energy (OSTI)

The final summary report summarizes the most significant findings from three project reports detailing: feed-in tariffs, model request for proposals for new generation, and model state offshore wind power legislation.

Jeremy Firestone; Dawn Kurtz Crompton

2011-11-30T23:59:59.000Z

268

Engineering and Economic Evaluation of Offshore Wind Technology  

Science Conference Proceedings (OSTI)

In 2006, the Electric Power Research Institute (EPRI) initiated a new project to conduct engineering and economic evaluations of renewable energy technologies, including wind, biomass, solar, geothermal, hydro, ocean tidal and wave, and others (Program 84). The goal of the evaluations is to develop an objective and consistent assessment of the current and projected future performance of the technologies with regard to thermal efficiency, capital and operations and maintenance costs, resource requirements...

2011-12-23T23:59:59.000Z

269

Investigation of a FAST-OrcaFlex Coupling Module for Integrating Turbine and Mooring Dynamics of Offshore Floating Wind Turbines: Preprint  

SciTech Connect

To enable offshore floating wind turbine design, the following are required: accurate modeling of the wind turbine structural dynamics, aerodynamics, platform hydrodynamics, a mooring system, and control algorithms. Mooring and anchor design can appreciably affect the dynamic response of offshore wind platforms that are subject to environmental loads. From an engineering perspective, system behavior and line loads must be studied well to ensure the overall design is fit for the intended purpose. FAST (Fatigue, Aerodynamics, Structures and Turbulence) is a comprehensive simulation tool used for modeling land-based and offshore wind turbines. In the case of a floating turbine, continuous cable theory is used to emulate mooring line dynamics. Higher modeling fidelity can be gained through the use of finite element mooring theory. This can be achieved through the FASTlink coupling module, which couples FAST with OrcaFlex, a commercial simulation tool used for modeling mooring line dynamics. In this application, FAST is responsible for capturing the aerodynamic loads and flexure of the wind turbine and its tower, and OrcaFlex models the mooring line and hydrodynamic effects below the water surface. This paper investigates the accuracy and stability of the FAST/OrcaFlex coupling operation.

Masciola, M.; Robertson, A.; Jonkman, J.; Driscoll, F.

2011-10-01T23:59:59.000Z

270

Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool: Preprint  

DOE Green Energy (OSTI)

In 2007, the FAST wind turbine simulation tool, developed and maintained by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL), was expanded to include capabilities that are suitable for modeling floating offshore wind turbines. In an effort to validate FAST and other offshore wind energy modeling tools, DOE funded the DeepCwind project that tested three prototype floating wind turbines at 1/50th scale in a wave basin, including a semisubmersible, a tension-leg platform, and a spar buoy. This paper describes the use of the results of the spar wave basin tests to calibrate and validate the FAST offshore floating simulation tool, and presents some initial results of simulated dynamic responses of the spar to several combinations of wind and sea states.

Browning, J. R.; Jonkman, J.; Robertson, A.; Goupee, A. J.

2012-11-01T23:59:59.000Z

271

Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool: Preprint  

SciTech Connect

In 2007, the FAST wind turbine simulation tool, developed and maintained by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL), was expanded to include capabilities that are suitable for modeling floating offshore wind turbines. In an effort to validate FAST and other offshore wind energy modeling tools, DOE funded the DeepCwind project that tested three prototype floating wind turbines at 1/50th scale in a wave basin, including a semisubmersible, a tension-leg platform, and a spar buoy. This paper describes the use of the results of the spar wave basin tests to calibrate and validate the FAST offshore floating simulation tool, and presents some initial results of simulated dynamic responses of the spar to several combinations of wind and sea states.

Browning, J. R.; Jonkman, J.; Robertson, A.; Goupee, A. J.

2012-11-01T23:59:59.000Z

272

EERE: Wind Program Home Page  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

wind projects and offshore wind resource potential. Offshore Wind R&D DOE makes strategic research & deployment investments to launch domestic offshore wind industry....

273

Access Framework: Model Text (November 2011): An Act to Establish a Framework for Development of Offshore Wind Power  

SciTech Connect

The model offshore wind power legislation focused on two aspects: compensation for use of ocean space and environmental assessment. In particular, the model legislation recommends the adoption of a rent and royalty scheme that is premised on high rent and low royalties in order to stimulate qualified bids from developers who are motivated to begin production as early as possible and to discourage sham bidding. The model legislation also includes a provision that sets royalties at a lower rate in the early years of project operation, and that provides states with the discretion to waive or defer rent and/or royalties for a period of time to meet the goals and objectives of energy independence, job creation, reduced emissions of conventional pollutants and greenhouse gases and increased state requirements for electricity from renewable sources. The environmental impact assessment (EIA) is structured to provide a systematic and interdisciplinary evaluation of the potential positive and negative life-cycle effects of a proposed offshore wind project on the physical, biological, cultural and socio-economic attributes of the project.

Jeremy Firestone; Dawn Kurtz Crompton

2011-10-22T23:59:59.000Z

274

Abstract--This paper presents the harmonic analysis of offshore wind farm (OWF) models with full converters  

E-Print Network (OSTI)

. Hjerrild, are with DONG Energy, Denmark (e-mail:, lukko@dongenergy.dk, jeshj@dongenergy.dk). C. L. Bak is with the Institute of Energy Technology, Aalborg University, Denmark (e-mail: clb@iet.aau.dk). effects of harmonics [15]. Fig. 2 Wind turbines from Burbo Bank Offshore Wind Farm (daylife.com). In order to investigate

Bak, Claus Leth

275

Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

Incorporation of Multi-Member Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines Preprint H. Song, A. Robertson, and J. Jonkman National Renewable Energy Laboratory D. Sewell University of Delaware Presented at the Offshore Technology Conference Houston, Texas April 30-May 3, 2012 Conference Paper NREL/CP-5000-53676 May 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

276

NREL: Wind Research - Capabilities  

NLE Websites -- All DOE Office Websites (Extended Search)

spectrum of engineering disciplines that are applicable to both land-based and offshore wind energy, including: atmospheric fluid mechanics and aerodynamics; dynamics, structures,...

277

Development of a Scale Model Wind Turbine for Testing of Offshore Floating Wind Turbine Systems.  

E-Print Network (OSTI)

??This thesis presents the development of a 1/50th scale 5 MW wind turbine intended for wind and wave basin model testing of commercially viable floating… (more)

Martin, Heather Rae

2011-01-01T23:59:59.000Z

278

Model Development and Loads Analysis of a Wind Turbine on a Floating Offshore Tension Leg Platform  

SciTech Connect

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. Models in this code are of greater fidelity than most of the models that have been used to analyze floating turbines in the past--which have neglected important hydrodynamic and mooring system effects. The report provides a description of the development process of a TLP model, which is a modified version of a Massachusetts Institute of Technology design derived from a parametric linear frequency-domain optimization process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the International Electrotechnical Commission offshore wind turbine design standard was performed with the verified TLP model. Response statistics, extreme event tables, fatigue lifetimes, and selected time histories of design-driving extreme events are analyzed and presented. Loads for the wind turbine on the TLP are compared to those of an equivalent land-based turbine in terms of load ratios. Major instabilities for the TLP are identified and described.

Matha, D.; Fischer, T.; Kuhn, M.; Jonkman, J.

2010-02-01T23:59:59.000Z

279

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

DOE Green Energy (OSTI)

This paper introduces the concept of constant Volt/Hz operation of offshore wind power plants. The deployment of offshore WPPs requires power transmission from the plant to the load center inland. Since this power transmission requires submarine cables, there is a need to use High-Voltage Direct Current transmission, which is economical for transmission distances longer than 50 kilometers. In the concept presented here, the onshore substation is operated at 60 Hz synced with the grid, and the offshore substation is operated at variable frequency and voltage, thus allowing the WPP to be operated at constant Volt/Hz.

Muljadi, E.; Singh, M.; Gevorgian, V.

2012-06-01T23:59:59.000Z

280

Can Satellite Sampling of Offshore Wind Speeds Realistically Represent Wind Speed Distributions?  

Science Conference Proceedings (OSTI)

Wind speeds over the oceans are required for a range of applications but are difficult to obtain through in situ methods. Hence, remote sensing tools, which also offer the possibility of describing spatial variability, represent an attractive ...

R. J. Barthelmie; S. C. Pryor

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

2010 Wind Technologies Market Report  

E-Print Network (OSTI)

and Minnesota (12%). Offshore Wind Power Project and Policythe emergence of an offshore wind power market still facesexists in developing offshore wind energy in several parts

Wiser, Ryan

2012-01-01T23:59:59.000Z

282

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network (OSTI)

11 “advanced-stage” offshore wind project proposals totalingcontinued in 2008 (see Offshore Wind Development Activities,Market Report Offshore Wind Development Activities In

Bolinger, Mark

2010-01-01T23:59:59.000Z

283

Low Wind Speed Technology Phase II: Developing Techniques to Evaluate the Designs and Operating Environments of Offshore Wind Turbines in the Mid-Atlantic and Lower Great Lakes Region; AWS Truewind, LLC  

DOE Green Energy (OSTI)

This fact sheet describes a subcontract with AWS Truewind, LLC to study offshore wind and wave environments of the Atlantic and lower Great Lakes regions by estimating available wind power resource.

Not Available

2006-03-01T23:59:59.000Z

284

Summary of Conclusions and Recommendations Drawn from the DeepCWind Scaled Floating Offshore Wind System Test Campaign: Preprint  

DOE Green Energy (OSTI)

The DeepCwind consortium is a group of universities, national labs, and companies funded under a research initiative by the U.S. Department of Energy (DOE) to support the research and development of floating offshore wind power. The two main objectives of the project are to better understand the complex dynamic behavior of floating offshore wind systems and to create experimental data for use in validating the tools used in modeling these systems. In support of these objectives, the DeepCwind consortium conducted a model test campaign in 2011 of three generic floating wind systems, a tension-leg platform (TLP), a spar-buoy (spar), and a semisubmersible (semi). Each of the three platforms was designed to support a 1/50th-scale model of a 5 MW wind turbine and was tested under a variety of wind/wave conditions. The focus of this paper is to summarize the work done by consortium members in analyzing the data obtained from the test campaign and its use for validating the offshore wind modeling tool, FAST.

Robertson, A. N.; Jonkman, J. M.; Masciola, M. D.; Molta, P.; Goupee, A. J.; Coulling, A. J.; Prowell, I.; Browning, J.

2013-07-01T23:59:59.000Z

285

New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet), NREL Highlights, Research & Development, NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

at the National Renewable Energy Laboratory at the National Renewable Energy Laboratory (NREL) develop a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology. Currently, most offshore wind turbines are installed in shallow water, less than 30 meters deep, on bottom-mounted substructures. But these substructures are not

286

Presented on the European Wind Energy Conference & Exhibition, Brussels, Belgium, March, 31 Network of offshore wind farms connected by gas insulated  

E-Print Network (OSTI)

transmission from an offshore wind farm, HVDC may be an interesting option. In a HVDC transmission, the low as shown in Fig. 25 (d). For certain power level, a HVDC transmission system, based on voltage source converter technology, may be used in such a system instead of the conventional thyristor based HVDC

Heinemann, Detlev

287

GAOH Offshore | Open Energy Information  

Open Energy Info (EERE)

Intends to become the preferred supplier of transport and logistical solutions for the offshore wind industry. References GAOH Offshore1 LinkedIn Connections CrunchBase...

288

Fluid---structure interaction modeling of wind turbines: simulating the full machine  

Science Conference Proceedings (OSTI)

In this paper we present our aerodynamics and fluid---structure interaction (FSI) computational techniques that enable dynamic, fully coupled, 3D FSI simulation of wind turbines at full scale, and in the presence of the nacelle and tower (i.e., simulation ... Keywords: ALE-VMS method, Fluid---structure interaction, Full machine, NREL 5 MW offshore, Rotor---tower interaction, Sliding-interface formulation, Wind turbine aerodynamics

Ming-Chen Hsu; Yuri Bazilevs

2012-12-01T23:59:59.000Z

289

Applications: Wind turbine structural health  

E-Print Network (OSTI)

of turbine system management. The data obtained from this multi-scale sensing capability will be fullyCapability Applications: Wind turbine structural health monitoring Individual turbine maintenance for active control in the field Limit damage propagation and maintenance costs Maximize return

290

Investigation of Response Amplitude Operators for Floating Offshore Wind Turbines: Preprint  

DOE Green Energy (OSTI)

This paper examines the consistency between response amplitude operators (RAOs) computed from WAMIT, a linear frequency-domain tool, to RAOs derived from time-domain computations based on white-noise wave excitation using FAST, a nonlinear aero-hydro-servo-elastic tool. The RAO comparison is first made for a rigid floating wind turbine without wind excitation. The investigation is further extended to examine how these RAOs change for a flexible and operational wind turbine. The RAOs are computed for below-rated, rated, and above-rated wind conditions. The method is applied to a floating wind system composed of the OC3-Hywind spar buoy and NREL 5-MW wind turbine. The responses are compared between FAST and WAMIT to verify the FAST model and to understand the influence of structural flexibility, aerodynamic damping, control actions, and waves on the system responses. The results show that based on the RAO computation procedure implemented, the WAMIT- and FAST-computed RAOs are similar (as expected) for a rigid turbine subjected to waves only. However, WAMIT is unable to model the excitation from a flexible turbine. Further, the presence of aerodynamic damping decreased the platform surge and pitch responses, as computed by both WAMIT and FAST when wind was included. Additionally, the influence of gyroscopic excitation increased the yaw response, which was captured by both WAMIT and FAST.

Ramachandran, G. K. V.; Robertson, A.; Jonkman, J. M.; Masciola, M. D.

2013-07-01T23:59:59.000Z

291

MODEL REQUEST FOR PROPOSALS TO PROVIDE ENERGY AND OTHER ATTRIBUTES FROM AN OFFSHORE WIND POWER PROJECT  

DOE Green Energy (OSTI)

This document provides a model RFP for new generation. The 'base' RFP is for a single-source offshore wind RFP. Required modifications are noted should a state or utility seek multi-source bids (e.g., all renewables or all sources). The model is premised on proposals meeting threshold requirements (e.g., a MW range of generating capacity and a range in terms of years), RFP issuer preferences (e.g., likelihood of commercial operation by a date certain, price certainty, and reduction in congestion), and evaluation criteria, along with a series of plans (e.g., site, environmental effects, construction, community outreach, interconnection, etc.). The Model RFP places the most weight on project risk (45%), followed by project economics (35%), and environmental and social considerations (20%). However, if a multi-source RFP is put forward, the sponsor would need to either add per-MWh technology-specific, life-cycle climate (CO2), environmental and health impact costs to bid prices under the 'Project Economics' category or it should increase the weight given to the 'Environmental and Social Considerations' category.

Jeremy Firestone; Dawn Kurtz Crompton

2011-10-22T23:59:59.000Z

292

Screening Analysis for the Environmental Risk Evaluation System Fiscal Year 2011 Report Environmental Effects of Offshore Wind Energy  

SciTech Connect

Potential environmental effects of offshore wind (OSW) energy development are not well understood, and yet regulatory agencies are required to make decisions in spite of substantial uncertainty about environmental impacts and their long-term consequences. An understanding of risks associated with interactions between OSW installations and avian and aquatic receptors, including animals, habitats, and ecosystems, can help define key uncertainties and focus regulatory actions and scientific studies on interactions of most concern. During FY 2011, Pacific Northwest National Laboratory (PNNL) scientists adapted and applied the Environmental Risk Evaluation System (ERES), first developed to examine the effects of marine and hydrokinetic energy devices on aquatic environments, to offshore wind development. PNNL scientists conducted a risk screening analysis on two initial OSW cases: a wind project in Lake Erie and a wind project off the Atlantic coast of the United States near Atlantic City, New Jersey. The screening analysis revealed that top-tier stressors in the two OSW cases were the dynamic effects of the device (e.g., strike), accidents/disasters, and effects of the static physical presence of the device, such as alterations in bottom habitats. Receptor interactions with these stressors at the highest tiers of risk were dominated by threatened and endangered animals. Risk to the physical environment from changes in flow regime also ranked high. Peer review of this process and results will be conducted during FY 2012. The ERES screening analysis provides an assessment of the vulnerability of environmental receptors to stressors associated with OSW installations; a probability analysis is needed to determine specific risk levels to receptors. As more data become available that document effects of offshore wind farms on specific receptors in U.S. coastal and Great Lakes waters, probability analyses will be performed.

Copping, Andrea E.; Hanna, Luke A.

2011-11-01T23:59:59.000Z

293

Offshore Wind Resource Assessment with WAsP and MM5: Comparative  

E-Print Network (OSTI)

Technologiezentrum Westküste, Büsum #12;11.45 Uhr Schallminimierung bei der Errichtung von Offshore-Windenergie Forschungsplattform FINO3 - Einsatz des gro�en Blasenschleiers b) Martin Ros (15`) Menck GmbH, Kaltenkirchen Offshore

Heinemann, Detlev

294

8/10/2010 1 DOE Offshore Wind RFI Response: DEOA-EE0000385, DOE Offshore Wind Program, Input Requested for  

E-Print Network (OSTI)

onshore wind and other renewable energy sources including solar, geothermal, biomass, and small hydro-Losique, Program Manager, Wind and Water Power Program (WWPP) Office of Energy Efficiency and Renewable Energy U.S. Department of Energy (DOE) Dear Mr. Beaudry-Losique, Staff of the California Energy Commission provide

Islam, M. Saif

295

The Temporal Autocorrelation Structure of Sea Surface Winds  

Science Conference Proceedings (OSTI)

The temporal autocorrelation structures of sea surface vector winds and wind speeds are considered. Analyses of scatterometer and reanalysis wind data demonstrate that the autocorrelation functions (acf) of surface zonal wind, meridional wind, and ...

Adam H. Monahan

2012-10-01T23:59:59.000Z

296

Studies on Spatial Structure of Wind Gust  

Science Conference Proceedings (OSTI)

The peak gust speed is often used to evaluate the maximum wind tome acting on the structure in wind engineering. To evaluate this peak gust speed, the ratio of the peak gust speed over the mean wind speed (called gust factor) is defined. The peak ...

Yasushi Mitsuta; Osamu Tsukamoto

1989-11-01T23:59:59.000Z

297

OpenEI - offshore resource  

Open Energy Info (EERE)

http:en.openei.orgdatasetstaxonomyterm8570 en Offshore Wind Resource http:en.openei.orgdatasetsnode921

Global Wind Potential Supply Curves by Country, Class, and...

298

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with  

E-Print Network (OSTI)

-domain based simulation model of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind turbine drive train under response and reliability analysis #12;Time domain based simulation model of 750 kW land-based wind turbine

Nørvåg, Kjetil

299

Wind Power: How Much, How Soon, and At What Cost?  

E-Print Network (OSTI)

been located on land; offshore wind capacity surpassed 1 G Woffshore, and deep offshore wind potential. Even assumingthe potential for offshore wind. As such, the size of the

Wiser, Ryan H

2010-01-01T23:59:59.000Z

300

Feasibility analysis of coordinated offshore wind project development in the U.S.  

E-Print Network (OSTI)

Wind energy is one of the cleanest and most available resources in the world, and advancements in wind technology are making it more cost effective. Though wind power is rapidly developing in many regions, its variable ...

Zhang, Mimi Q

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

A Review of Wind Project Financing Structures in the USA  

E-Print Network (OSTI)

Mark Bolinger. 2007. Wind Project Financing Structures: A2008. Annual Report on U.S. Wind Power Installation, Cost,James. 2005. “Invenergy Wind Finance Company Portfolio

Bolinger, Mark A

2009-01-01T23:59:59.000Z

302

Quantifying the Impact of Wind Turbine Wakes on Power Output at Offshore R. J. BARTHELMIE,*,1 S. C. PRYOR,*,1 S. T. FRANDSEN,1 K. S. HANSEN,# J. G. SCHEPERS,@  

E-Print Network (OSTI)

Quantifying the Impact of Wind Turbine Wakes on Power Output at Offshore Wind Farms R. J. This research is focused on improving the understanding of, and modeling of, wind turbine wakes in order to make, the atmosphere, and neighboring turbines to accurately predict wind farm power output and thus optimize wind farm

Pryor, Sara C.

303

Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

Calibration and Validation of a Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool Preprint J.R. Browning University of Colorado-Boulder J. Jonkman and A. Robertson National Renewable Energy Laboratory A.J. Goupee University of Maine Presented at the Science of Making Torque from Wind Oldenburg, Germany October 9-11, 2012 Conference Paper NREL/CP-5000-56138 November 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes.

304

Wind Turbine Blade Structural Health Monitoring  

Science Conference Proceedings (OSTI)

Structural health monitoring (SHM) is the automated inspection and evaluation of structures such as wind turbine blades. This report examines the current state-of-the-art blade SHM systems, identifies future trends, and outlines a methodology for probabilistic cost-benefit analysis of the application of SHM systems to wind turbine blades. The reliability of wind turbine blades is an ongoing concern for the wind industry. Applying SHM to blades may be one way to reduce blade failure rates and reduce the d...

2010-12-31T23:59:59.000Z

305

Power System Modeling of 20percent Wind-Generated Electricity by 2030  

E-Print Network (OSTI)

price is constant Shallow Offshore Wind Technology Cost WindOhio was modified and offshore wind development in Texas was

Hand, Maureen

2008-01-01T23:59:59.000Z

306

WEST: A northern California study of the role of wind-driven transport in the productivity of coastal plankton communities  

E-Print Network (OSTI)

and persistent wind stress offshore, while inshore winds areby stronger winds, greater offshore transport and lowerextending well offshore due to wind stress curl off Bodega.

2006-01-01T23:59:59.000Z

307

Comparison of Mean Wind Speeds and Turbulence at a Coastal Site and Offshore Location  

Science Conference Proceedings (OSTI)

Observations of mean wind speed and longitudinal turbulence at a height of 8 m over the Atlantic ocean, 5 km off Long Island, New York, were compared with simultaneous observations at the beach. Results were grouped into wind direction classes ...

S. SethuRaman; G. S. Raynor

1980-01-01T23:59:59.000Z

308

1 1 1 1 1 1 2 2 Network of offshore wind farms connected by  

E-Print Network (OSTI)

combined with long Furthermore, compared to HVDC systems, . Conclusions ompared to other transmission transmission capacities only GIL or high voltage direct current (HVDC) systems are appropriate for transmission. For usage under offshore conditions three-phase alternating current has some benefits to HVDC solutions

Heinemann, Detlev

309

offshore | OpenEI  

Open Energy Info (EERE)

offshore offshore Dataset Summary Description GIS data for offshore wind speed (meters/second). Specified to Exclusive Economic Zones (EEZ).Wind resource based on NOAA blended sea winds and monthly wind speed at 30km resolution, using a 0.11 wind sheer to extrapolate 10m - 90m. Annual average >= 10 months of data, no nulls. Source National Renewable Energy Laboratory (NREL) Date Released Unknown Date Updated Unknown Keywords GIS global NOAA NREL offshore wind wind speed Data application/zip icon Download Shapefile (zip, 18.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Other or unspecified, see optional comment below Comment Please cite NREL and NOAA Rate this dataset Usefulness of the metadata

310

Economic Comparison of HVAC and HVDCSolutions for Large Offshore Wind Farms underSpecial Consideration of Reliability.  

E-Print Network (OSTI)

?? An economic comparison of several HVAC-HVDC transmission systems from large offshore windfarms is presented. The power output from the offshore windfarm is modeled by… (more)

Lazaridis, Lazaros

2005-01-01T23:59:59.000Z

311

A FRESH LOOK AT OFFSHORE WIND OPPORTUNITIES IN MASSACHUSETTS Anthony L. Rogers, Ph.D.  

E-Print Network (OSTI)

projects are supplying energy at costs of about 7.5 cents/ kWh. There are plans to install 40 MW of wind enable the harvesting of wind energy resources from areas far from shore and close to shore in regions on these assumptions, the Department of Energy estimates that wind power could provide 33,000 GWh of energy per year

Massachusetts at Amherst, University of

312

Comparison of Wake Model Simulations with Offshore Wind Turbine Wake Profiles Measured by Sodar  

Science Conference Proceedings (OSTI)

This paper gives an evaluation of most of the commonly used models for predicting wind speed decrease (wake) downstream of a wind turbine. The evaluation is based on six experiments where free-stream and wake wind speed profiles were measured ...

R. J. Barthelmie; G. C. Larsen; S. T. Frandsen; L. Folkerts; K. Rados; S. C. Pryor; B. Lange; G. Schepers

2006-07-01T23:59:59.000Z

313

Wind Project Financing Structures: A Review & Comparative Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Wind Project Financing Structures: A Review & Comparative Analysis Title Wind Project Financing Structures: A Review & Comparative Analysis Publication Type Report Year of...

314

Web tool for energy policy decision-making through geo-localized LCA models: A focus on offshore wind farms in Northern Europe  

E-Print Network (OSTI)

1 Web tool for energy policy decision-making through geo-localized LCA models: A focus on offshore for 2020. To achieve these objectives, it is necessary for energy policy makers to have a full main objective is to support environ- mental policy regarding wind energy. As a renewable energy source

Paris-Sud XI, Université de

315

WREF 2012: THE PAST AND FUTURE COST OF WIND ENERGY  

E-Print Network (OSTI)

Great expectations: The cost of offshore wind in UK waters –Monitoring Techniques for Offshore Wind Farms. ” Journal of

Wiser, Ryan

2013-01-01T23:59:59.000Z

316

Understanding Wind Turbine Price Trends in the U.S. Over the Past Decade  

E-Print Network (OSTI)

Bruce Valpy. 2011. Offshore Wind: Forecasts of future costsCarbon Trust. 2008. Offshore wind power: big challenge, bigfinancial support for offshore wind. Report prepared for the

Bolinger, Mark

2013-01-01T23:59:59.000Z

317

Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz: Preprint  

NLE Websites -- All DOE Office Websites (Extended Search)

Doubly Fed Induction Generator Doubly Fed Induction Generator in an Offshore Wind Power Plant Operated at Rated V/Hz Preprint Eduard Muljadi, Mohit Singh, and Vahan Gevorgian To be presented at the IEEE Energy Conversion Congress and Exhibition Raleigh, North Carolina September 15-20, 2012 Conference Paper NREL/CP-5500-55573 June 2012 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

318

1) INTRODUCTION Reliable and save grid integration of large-scale offshore wind  

E-Print Network (OSTI)

of these results with load profiles and conventional power generation will give insight into crossboarder flows production, forecasted wind power and deviations in the load forecast. Spatial forecast error smoothing. However, the accurate modeling of the vertical wind profile gains importance as in general much higher

Heinemann, Detlev

319

NREL: Wind Research - Structural Testing Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Structural Testing Laboratory Structural Testing Laboratory Photo of NREL's Wind Research User Facility. Shown in front are several test bays that protect proprietary information while companies disassemble turbines to analyze, test, and modify individual components. NREL's Structural Testing Laboratory includes office space for industry researchers, houses experimental laboratories, computer facilities, space for assembling turbines, components, and blades for testing. Credit: Patrick Corkery. NREL's Structural Testing Laboratory at the National Wind Technology Center (NWTC) provides office space for industry researchers, experimental laboratories, computer facilities for analytical work, and space for assembling components and turbines for atmospheric testing. The facility also houses two blade stands equipped with overhead cranes and

320

Facilitating Wind Development: The Importance of Electric Industry Structure  

DOE Green Energy (OSTI)

This paper evaluates which wholesale elecricity market-structure characteristics best accommodate wind energy development.

Kirby, B.; Milligan, M.

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

2011 Wind Technologies Market Report  

E-Print Network (OSTI)

with the section on offshore wind; Donna Heimiller and Billythe end of 2011, global offshore wind power capacity stoodEnergy's investments in offshore wind R&D. Interest exists

Bolinger, Mark

2013-01-01T23:59:59.000Z

322

2009 Wind Technologies Market Report  

E-Print Network (OSTI)

al. 2010. Large-scale Offshore Wind for the United States:assistance with the offshore wind energy discussion; DonnaTechnologies Market Report Offshore Wind Power Project and

Wiser, Ryan

2010-01-01T23:59:59.000Z

323

Scira Offshore Energy | Open Energy Information  

Open Energy Info (EERE)

United Kingdom Zip NR32 1DE Sector Wind energy Product Developer of the Sheringham Shoals offshore wind farm. References Scira Offshore Energy1 LinkedIn Connections CrunchBase...

324

Model Development and Loads Analysis of an Offshore Wind Turbine on a Tension Leg Platform with a Comparison to Other Floating Turbine Concepts: April 2009  

DOE Green Energy (OSTI)

This report presents results of the analysis of a 5-MW wind turbine located on a floating offshore tension leg platform (TLP) that was conducted using the fully coupled time-domain aero-hydro-servo-elastic design code FAST with AeroDyn and HydroDyn. The report also provides a description of the development process of the TLP model. The model has been verified via comparisons to frequency-domain calculations. Important differences have been identified between the frequency-domain and time-domain simulations, and have generated implications for the conceptual design process. An extensive loads and stability analysis for ultimate and fatigue loads according to the procedure of the IEC 61400-3 offshore wind turbine design standard was performed with the verified TLP model. This report compares the loads for the wind turbine on the TLP to those of an equivalent land-based turbine. Major instabilities for the TLP are identified and described.

Matha, D.

2010-02-01T23:59:59.000Z

325

Numerical Prediction of Experimentally Observed Behavior of a Scale Model of an Offshore Wind Turbine Supported by a Tension-Leg Platform: Preprint  

Science Conference Proceedings (OSTI)

Realizing the critical importance the role physical experimental tests play in understanding the dynamics of floating offshore wind turbines, the DeepCwind consortium conducted a one-fiftieth-scale model test program where several floating wind platforms were subjected to a variety of wind and wave loading condition at the Maritime Research Institute Netherlands wave basin. This paper describes the observed behavior of a tension-leg platform, one of three platforms tested, and the systematic effort to predict the measured response with the FAST simulation tool using a model primarily based on consensus geometric and mass properties of the test specimen.

Prowell, I.; Robertson, A.; Jonkman, J.; Stewart, G. M.; Goupee, A. J.

2013-01-01T23:59:59.000Z

326

NREL: Wind Research - Information and Outreach  

NLE Websites -- All DOE Office Websites (Extended Search)

small wind systems. Printable Version Wind Research Home Capabilities Projects Offshore Wind Research Large Wind Turbine Research Midsize Wind Turbine Research Small Wind Turbine...

327

Avian Interactions with Wind Power Structures  

Science Conference Proceedings (OSTI)

In October of 2002, in Jackson Hole, Wyoming, EPRI held a conference on avian interactions with wind power structures. Previous EPRI conferences on this same topic have focused on various aspects of the topic; the focus areas in 2002 were 1) assessing the state of knowledge with respect to avian interactions with wind powered generation facilities, and 2) providing a context for future research and development efforts. This report is an abbreviated version of the complete proceedings, which will be poste...

2003-03-31T23:59:59.000Z

328

Potential Climatic Impacts and Reliability of Large-Scale Offshore Wind Farms  

E-Print Network (OSTI)

The vast availability of wind power has fueled substantial interest in this renewable energy source as a potential near-zero greenhouse gas emission technology for meeting future world energy needs while addressing the ...

Wang, Chien

329

Development and Verification of a Fully Coupled Simulator for Offshore Wind Turbines: Preprint  

Science Conference Proceedings (OSTI)

This report outlines the development of an analysis tool capable of analyzing a variety of wind turbine, support platform, and mooring system configurations.The simulation capability was tested by model-to-model comparisons to ensure its correctness.

Jonkman, J. M.; Buhl, M. L. Jr.

2007-01-01T23:59:59.000Z

330

Comparisons on offshore structure responses to random waves using linear and high-order wave theories  

E-Print Network (OSTI)

The predicted responses of an offshore structure when the wave induced kinematics are computed from different estimation methods can change significantly. The sometimes controversial results have recently motivated the development of a new methodology for wave kinematics prediction. While the methods commonly used by the offshore industry are empirical and semi-empirical modifications of Linear (random) Wave Theory, the new approach (Hybrid Wave Model) satisfies the principles of hydrodynamics and explicitly considers the non-linear effect of the wave-wave interactions on wave elevation, kinematics and evolution. This methodology has been proven to be more accurate and reliable for the estimations of wave kinematics, but its impact on the prediction of the structural response is yet to be investigated. In this study, the performance of the new methodology arid other methods currently used for kinematics prediction was tested. The (surge) response of two offshore structures designed specially for deep-oil production was estimated using three methods (Hybrid Wave Model, Wheeler "Stretching" and Linear Extrapolation) and compared with the corresponding laboratory measurements. The wave forces were computed from the conventional Morison Equation evaluating the ambient wave kinematics from the wave elevation measurements. A numerical scheme based on a Finite Element time integration technique (Newmark-beta method) was used for the response evaluation after it had been validated and calibrated by an analytical (linear) solution and measured responses for regular waves. The comparisons between measured and predicted responses using kinematics calculated from the Hybrid Wave Model showed excellent agreement, specially for the low frequency components, while those using methods based on linear modifications rendered poor underestimations. The low frequency (peak) responses of these deep-water offshore structures were found to be greatly dominated by very low frequency wave excitations, which are mainly due to the wave-wave interactions.

Ramos Heredia, Rafael Juda

1995-01-01T23:59:59.000Z

331

Northerly surface wind events over the eastern North Pacific Ocean : spatial distribution, seasonality, atmospheric circulation, and forcing  

E-Print Network (OSTI)

the surface wind along and offshore of the California coaststructure of wind offshore of California is characterized bynorthwesterly winds along and offshore of the California

Taylor, Stephen V.

2006-01-01T23:59:59.000Z

332

Northerly surface wind events over the eastern North Pacific Ocean : spatial distribution, seasonality, atmospheric circulation, and forcing  

E-Print Network (OSTI)

the prospects for offshore wind energy production have2004) demonstrates the offshore wind field is not smooth andand the relatively smooth offshore winds in model generated

Taylor, Stephen V.

2006-01-01T23:59:59.000Z

333

IDENTIFYING CURRENT-SHEET–LIKE STRUCTURES IN THE SOLAR WIND  

E-Print Network (OSTI)

Barish, F. D. 1974, in Solar Wind Three, ed. C. T. Russell (AIP Conf. Proc. 471, Solar Wind Nine, ed. S. R. Habbal (NewSTRUCTURES IN THE SOLAR WIND G. Li Space Science Laboratory,

Li, Gang

2008-01-01T23:59:59.000Z

334

IDENTIFYING CURRENT-SHEET–LIKE STRUCTURES IN THE SOLAR WIND  

E-Print Network (OSTI)

Barish, F. D. 1974, in Solar Wind Three, ed. C. T. Russell (in AIP Conf. Proc. 471, Solar Wind Nine, ed. S. R. Habbal (SHEET–LIKE STRUCTURES IN THE SOLAR WIND G. Li Space Science

Li, Gang

2008-01-01T23:59:59.000Z

335

Marine Boundary-layer Structure and Circulation in the Region of Offshore Redevelopment of a Cyclone during GALE  

Science Conference Proceedings (OSTI)

Marine boundary-layer structure and circulation is documented for the 24 February 1986 case of offshore redevelopment of a cyclone during the Genesis of Atlantic Lows Experiment (GALE) Intensive Observing Period (IOP) 9. Mesoscale and satellite ...

Teddy Holt; Sethu Raman

1990-02-01T23:59:59.000Z

336

Reliable, Lightweight Transmissions For Off-Shore, Utility Scale Wind Turbines  

Science Conference Proceedings (OSTI)

The objective of this project was to reduce the technical risk for a hydrostatic transmission based drivetrain for high-power utility-size wind turbines. A theoretical study has been performed to validate the reduction of cost of energy (CoE) for the wind turbine, identify risk mitigation strategies for the drive system and critical components, namely the pump, shaft connection and hydrostatic transmission (HST) controls and address additional benefits such as reduced deployment costs, improved torque density and improved mean time between repairs (MTBR).

Jean-Claude Ossyra

2012-10-25T23:59:59.000Z

337

System of control in an offshore wind farm with HVdc link  

Science Conference Proceedings (OSTI)

This paper describes the coordination in control systems between the doubly fed induction generator (DFIG) and the firing delay angle control of the rectifier that comprises the HVdc transmission system based on a Line-Commutated Converter; as well as ... Keywords: HVdc transmission, control system, doubly fed induction generator, wind power generation

Miguel Montilla-Djesus; Santiago Arnaltes; David Santos Martin

2010-12-01T23:59:59.000Z

338

Wind Turbine Investment and Disinvestment: A Structural Econometric Model  

E-Print Network (OSTI)

Wind Turbine Investment and Disinvestment: A Structural Econometric Model Jonathan A. Cook C model of wind turbine owners' decisions about whether and when to add new turbines to a pre profit structure for wind producers and evaluate the impact of technology and government policy on wind

Lin, C.-Y. Cynthia

339

Highly structured wind in Vela X-1  

E-Print Network (OSTI)

We present an in-depth analysis of the spectral and temporal behavior of a long almost uninterrupted INTEGRAL observation of Vela X-1 in Nov/Dec 2003. In addition to an already high activity level, Vela X-1 exhibited several very intense flares with a maximum intensity of more than 5 Crab in the 20-40 keV band. Furthermore Vela X-1 exhibited several off states where the source became undetectable with ISGRI. We interpret flares and off states as being due to the strongly structured wind of the optical companion: when Vela X-1 encounters a cavity in the wind with strongly reduced density, the flux drops, thus potentially triggering the onset of the propeller effect which inhibits further accretion, thus giving rise to the off states. The required drop in density to trigger the propeller effect in Vela X-1 is of the same order as predicted by theoretical papers for the densities in the OB star winds. The same structured wind can give rise to the giant flares when Vela X-1 encounters a dense blob in the wind. Fu...

Kreykenbohm, I; Kretschmar, P; Torrejon, J M; Pottschmidt, K; Hanke, M; Santangelo, A; Ferrigno, C; Staubert, R

2009-01-01T23:59:59.000Z

340

Wind Energy Facilities and Residential Properties: The Effect of Proximity and View on Sales Prices  

E-Print Network (OSTI)

Opinion About Large Offshore Wind Power: Underlying Factors.Delaware Opinion on Offshore Wind Power - Interim Report.

Hoen, Ben

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Wind Power Development in the United States: Current Progress, Future Trends  

E-Print Network (OSTI)

to lower the cost of offshore wind power, and incrementallyinstalled offshore. From 2018 to 2030, roughly 16 GW of wind

Wiser, Ryan H

2009-01-01T23:59:59.000Z

342

Wind Energy Facilities and Residential Properties: The Effect of Proximity and View on Sales Prices  

E-Print Network (OSTI)

Opinion about Large Offshore Wind Power: Underlying Factors.Delaware Opinion on Offshore Wind Power - Interim Report.

Hoen, Ben

2010-01-01T23:59:59.000Z

343

Structural health monitoring of wind turbines  

DOE Green Energy (OSTI)

To properly determine what is needed in a structural health monitoring system, actual operational structures need to be studied. We have found that to effectively monitor the structural condition of an operational structure four areas must be addressed: determination of damage-sensitive parameters, test planning, information condensation, and damage identification techniques. In this work, each of the four areas has been exercised on an operational structure. The structures studied were all be wind turbines of various designs. The experiments are described and lessons learned will be presented. The results of these studies include a broadening of experience in the problems of monitoring actual structures as well as developing a process for implementing such monitoring systems.

Simmermacher, T.; James, G.H. III.; Hurtado, J.E.

1997-09-01T23:59:59.000Z

344

WREF 2012: THE PAST AND FUTURE COST OF WIND ENERGY  

E-Print Network (OSTI)

Techniques for Offshore Wind Farms. ” Journal of Solarranges  [26]   Improved  wind  farm  power  quality  and  

Wiser, Ryan

2013-01-01T23:59:59.000Z

345

Coherent Structures and Larval Transport in the California Current System  

E-Print Network (OSTI)

behavior upwelling winds imply offshore transport and thatparticles far offshore, so that when winds reverse they arecoastal winds drive ocean surface transport offshore,

Harrison, Cheryl S.

2012-01-01T23:59:59.000Z

346

Wind effects on shoaling wave shape  

E-Print Network (OSTI)

experiments that include offshore wind and cover a greaterwere that onshore (offshore) winds (a) moved the break-pointOCEANOGRAPHY V OLUME 35 offshore wind not only do waves

Feddersen, F; Veron, F

2005-01-01T23:59:59.000Z

347

Offshore Wind Power - Opportunity and strategy for a small engineering consultants firm.  

E-Print Network (OSTI)

??GVA is a small engineering consultancy firm, with specialized focus in design of floating structures such as oil production platforms. The key business is at… (more)

Jobson Sellström, Carin

2010-01-01T23:59:59.000Z

348

Flexible dynamics of floating wind turbines  

E-Print Network (OSTI)

This work presents Tower Flex, a structural dynamics model for a coupled analysis of offshore floating wind turbines consisting of a tower, a floating platform and a mooring system. In this multi-body, linear frequency-domain ...

Luypaert, Thomas (Thomas J.)

2012-01-01T23:59:59.000Z

349

Part of the Climate Change Problem . . . and the Solution? Chinese-Made Wind Power Technology and Opportunities for Dissemination  

E-Print Network (OSTI)

plans for onshore and offshore wind energy development in early problems with offshore wind turbines. 20 Figure 3.  

Lewis, Joanna I.

2005-01-01T23:59:59.000Z

350

The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis  

E-Print Network (OSTI)

Opinion about Large Offshore Wind Power: Underlying Factors.Delaware Opinion on Offshore Wind Power - Interim Report.

Hoen, Ben

2010-01-01T23:59:59.000Z

351

Where Are We Now: The U.S. Department of Energy Makes Strides to Advance Offshore Wind in the United States, Wind Program Newsletter: October 2012 Edition (Newsletter)  

DOE Green Energy (OSTI)

This newsletter describes the U.S. Department of Energy Wind Program's recent wind energy research and development efforts.

Not Available

2012-12-01T23:59:59.000Z

352

Testing America's Wind Turbines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rooftop Solar Challenge NEUP Award Recipients NEUP Award Recipients 2011 Grants for Offshore Wind Power 2011 Grants for Offshore Wind Power 2011 Grants for Advanced...

353

Gone with the Wind - The Potential Tragedy of the Common Wind  

E-Print Network (OSTI)

of almost 1,471 MW of offshore wind farms were in operationFuture Prospects for Offshore Wind in Europe, TilE EUROPIEANof the many advantaged of offshore wind installations, see

Lifshitz-Goldberg, Yaei

2010-01-01T23:59:59.000Z

354

Estimating Hurricane Wind Structure in the Absence of Aircraft Reconnaissance  

Science Conference Proceedings (OSTI)

New objective methods are introduced that use readily available data to estimate various aspects of the two-dimensional surface wind field structure in hurricanes. The methods correlate a variety of wind field metrics to combinations of storm ...

James P. Kossin; John A. Knaff; Howard I. Berger; Derrick C. Herndon; Thomas A. Cram; Christopher S. Velden; Richard J. Murnane; Jeffrey D. Hawkins

2007-02-01T23:59:59.000Z

355

4C Offshore Limited | Open Energy Information  

Open Energy Info (EERE)

4C Offshore Limited 4C Offshore Limited Jump to: navigation, search Name 4C Offshore Limited Place Suffolk, United Kingdom Country United Kingdom Product Project planning, consulting for offshore industries (wind, oil, gas) Year founded 2009 Company Type For Profit Company Ownership Private Small Business No Affiliated Companies 4C Offshore Limited Technology Offshore Wind Phone number +44 (0)1502 509260 Website http://www.4coffshore.com/ References 4C Offshore website[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. 4C Offshore Limited is a company based in Suffolk, United Kingdom. 4C Offshore is an independent marine consulting firm, that provides advice and consulting services in offshore development, particularly renewables and

356

Review of potential impacts to sea turtles from underwater explosive removal of offshore structures  

SciTech Connect

The purpose of this study was to collect and synthesize existing information relevant to the explosive removal of offshore structures (EROS) in aquatic environments. Data sources were organized and summarized by topic - explosive removal methods, physics of underwater explosions, sea turtle resources, documented impacts to sea turtles, and mitigation of effects. Information was gathered via electronic database searches and literature source review. Bulk explosive charges are the most commonly used technique in EROS. While the physical principles of underwater detonations and the propagation of pressure and acoustic waves are well understood, there are significant gaps in the application of this knowledge. Impacts to sea turtles from explosive removal operations may range from non-injurious effects (e.g. acoustic annoyance; mild tactile detection or physical discomfort) to varying levels of injury (i.e. non-lethal and lethal injuries). Very little information exists regarding the impacts of underwater explosions on sea turtles. Effects of explosions on turtles often must be inferred from documented effects to other vertebrates with lungs or other gas-containing organs, such as mammals and most fishes. However, a cautious approach should be used when determining impacts to sea turtles based on extrapolations from other vertebrates. The discovery of beached sea turtles and bottlenose dolphins following an explosive platform removal event in 1986 prompted the initiation of formal consultation between the U.S. Department of the Interior, Minerals Management Service (MMS) and the National Marine Fisheries Service (NMFS), authorized through the Endangered Species Act Section 7, to determine a mechanism to minimize potential impacts to listed species. The initial consultation resulted in a requirement for oil and gas companies to obtain a permit (through separate consultations on a case-by-case basis) prior to using explosives in Federal waters. Because many offshore structure removal operations are similar, a 'generic' Incidental Take Statement was established by the NMFS that describes requirements to protect sea turtles when an operator's individual charge weights did not exceed 50 lb (23 kg). Requirements associated with the Incidental Take Permit were revised in 2003 and 2006 to accommodate advances in explosive charge technologies, removals of structures in deeper waters, and adequate protection of deep water marine mammal species in Gulf of Mexico waters. Generally, these requirements include pre- and post-detonation visual monitoring using standard surface and aerial survey methods for sea turtles and marine mammals, and, in some scenarios, passive acoustic survey methods for marine mammals within a specified radius from an offshore structure. The survey program has been successful in mitigating impacts to sea turtles associated with EROS. However, even with these protective measures in place, there have been observations of sea turtles affected by explosive platform removals.

Viada, Stephen T. [CSA International, Inc., 759 Parkway Street, Jupiter, FL 33477 (United States)], E-mail: sviada@conshelf.com; Hammer, Richard M. [CSA International, Inc., 759 Parkway Street, Jupiter, FL 33477 (United States)], E-mail: rhammer@conshelf.com; Racca, Roberto [JASCO Research Ltd., Vancouver Island Technology Park, Suite 2101, 4464 Markham Street, Victoria, British Columbia, V8Z 7X8 (Canada)], E-mail: rob@jasco.com; Hannay, David [JASCO Research Ltd., Vancouver Island Technology Park, Suite 2101, 4464 Markham Street, Victoria, British Columbia, V8Z 7X8 (Canada)], E-mail: dave@jasco.com; Thompson, M. John [CSA International, Inc., 759 Parkway Street, Jupiter, FL 33477 (United States)], E-mail: jthompson@conshelf.com; Balcom, Brian J. [CSA International, Inc., 759 Parkway Street, Jupiter, FL 33477 (United States)], E-mail: bbalcom@conshelf.com; Phillips, Neal W. [CSA International, Inc., 759 Parkway Street, Jupiter, FL 33477 (United States)], E-mail: nphillips@conshelf.com

2008-05-15T23:59:59.000Z

357

Where Are We Now: The U.S. Department of Energy Makes Strides to Advance Offshore Wind in the United States, Wind Program Newsletter: October 2012 Edition (Newsletter)  

SciTech Connect

This newsletter describes the U.S. Department of Energy Wind Program's recent wind energy research and development efforts.

2012-12-01T23:59:59.000Z

358

Offshore Wind Resource......................................................  

E-Print Network (OSTI)

Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at

United States; Marc Schwartz; Donna Heimiller; Walt Musial

2010-01-01T23:59:59.000Z

359

Offshore Wind Power  

E-Print Network (OSTI)

This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at

In Paper

2010-01-01T23:59:59.000Z

360

Offshore Renewable Energy R&D (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet describes the offshore renewable energy R&D efforts at NREL's NWTC. As the United States increases its efforts to tap the domestic energy sources needed to diversify its energy portfolio and secure its energy supply, more attention is being focused on the rich renewable resources located offshore. Offshore renewable energy sources include offshore wind, waves, tidal currents, ocean and river currents, and ocean thermal gradients. According to a report published by the National Renewable Energy Laboratory (NREL) in 2010,1 U.S. offshore wind resources have a gross potential generating capacity four times greater than the nation's present electric capacity, and the Electric Power Research Institute estimates that the nation's ocean energy resources could ultimately supply at least 10% of its electric supply. For more than 30 years, NREL has advanced the science of renewable energy while building the capabilities to guide rapid deployment of commercial applications. Since 1993, NREL's National Wind Technology Center (NWTC) has been the nation's premier wind energy research facility, specializing in the advancement of wind technologies that range in size from a kilowatt to several megawatts. For more than 8 years, the NWTC has been an international leader in the field of offshore floating wind system analysis. Today, researchers at the NWTC are taking their decades of experience and extensive capabilities and applying them to help industry develop cost-effective hydrokinetic systems that convert the kinetic energy in water to provide power for our nation's heavily populated coastal regions. The center's capabilities and experience cover a wide spectrum of wind and water energy engineering disciplines, including atmospheric and ocean fluid mechanics, aerodynamics; aeroacoustics, hydrodynamics, structural dynamics, control systems, electrical systems, and testing.

Not Available

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Offshore Renewable Energy R&D (Fact Sheet)  

SciTech Connect

This fact sheet describes the offshore renewable energy R&D efforts at NREL's NWTC. As the United States increases its efforts to tap the domestic energy sources needed to diversify its energy portfolio and secure its energy supply, more attention is being focused on the rich renewable resources located offshore. Offshore renewable energy sources include offshore wind, waves, tidal currents, ocean and river currents, and ocean thermal gradients. According to a report published by the National Renewable Energy Laboratory (NREL) in 2010,1 U.S. offshore wind resources have a gross potential generating capacity four times greater than the nation's present electric capacity, and the Electric Power Research Institute estimates that the nation's ocean energy resources could ultimately supply at least 10% of its electric supply. For more than 30 years, NREL has advanced the science of renewable energy while building the capabilities to guide rapid deployment of commercial applications. Since 1993, NREL's National Wind Technology Center (NWTC) has been the nation's premier wind energy research facility, specializing in the advancement of wind technologies that range in size from a kilowatt to several megawatts. For more than 8 years, the NWTC has been an international leader in the field of offshore floating wind system analysis. Today, researchers at the NWTC are taking their decades of experience and extensive capabilities and applying them to help industry develop cost-effective hydrokinetic systems that convert the kinetic energy in water to provide power for our nation's heavily populated coastal regions. The center's capabilities and experience cover a wide spectrum of wind and water energy engineering disciplines, including atmospheric and ocean fluid mechanics, aerodynamics; aeroacoustics, hydrodynamics, structural dynamics, control systems, electrical systems, and testing.

2011-10-01T23:59:59.000Z

362

Advanced Offshore Solutions ApS AOS | Open Energy Information  

Open Energy Info (EERE)

Tranbjerg, Denmark Zip 8310 Sector Wind energy Product Denmark-based consultancy for offshore wind industry. Coordinates 56.091431, 10.13779 Loading map......

363

2009 Wind Technologies Market Report  

E-Print Network (OSTI)

downward pressure on project costs and wind power prices.installed wind power project costs, wind turbine transactionand uncertain offshore project costs, and public acceptance

Wiser, Ryan

2010-01-01T23:59:59.000Z

364

2009 Wind Technologies Market Report  

E-Print Network (OSTI)

The wind energy integration, transmission, and policyPTC. Moreover, federal policy towards wind energy remainsand policy announcements demonstrate accelerated activity in the offshore wind energy

Wiser, Ryan

2010-01-01T23:59:59.000Z

365

Voltage Source Converter Technology for Offshore Grids.  

E-Print Network (OSTI)

??This master thesis has investigated the possible application of voltage source converters (VSC) for the interconnection of offshore installations, i.e. wind farms and petroleum platforms,… (more)

Vormedal, Pål Kristian Myhrer

2010-01-01T23:59:59.000Z

366

The Political Economy of Wind Power in China  

E-Print Network (OSTI)

in this paper, not offshore wind power—a very small yetthe press declaring offshore wind power to be cheaper thanfully occupied and offshore wind power resources grabbed in

Swanson, Ryan Landon

2011-01-01T23:59:59.000Z

367

Understanding Trends in Wind Turbine Prices Over the Past Decade  

E-Print Network (OSTI)

Carbon Trust. 2008. Offshore wind power: big challenge, bigGreat Expectations: The cost of offshore wind in UK waters –Bruce Valpy. 2011. Offshore Wind: Forecasts of future costs

Bolinger, Mark

2012-01-01T23:59:59.000Z

368

Projected Impact of Federal Policies on U.S. Wind Market Potential...  

NLE Websites -- All DOE Office Websites (Extended Search)

at 10 meters above ground) to Class 7 (>7.0 ms). WinDS, which also includes offshore wind resources, distinguishes between shallow offshore wind and deep offshore wind turbines....

369

Submitted for Review Journal of Offshore Mechanics and Arctic Engineering, ASME PRACTICAL AIRGAP PREDICTION FOR OFFSHORE STRUCTURES  

E-Print Network (OSTI)

@tamu.edu Abstract Two new methods are proposed to predict airgap demand. Airgap demand is is the maximum expected stages of design. Two existing methods of predicting airgap demand based on first-order diffraction-conservative in that diffraction effects generally worsen the airgap demand. Large-volume floating structures, including semi

Sweetman, Bert

370

Wind | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Assessment and Characterization Defining, measuring, and forecasting land-based and offshore wind resources Environmental Impacts and Siting of Wind Projects Avoiding,...

371

7th International Workshop on Large-Scale Integration of Wind Power and on Transmission Networks for Offshore Wind Farms Models for HLI analysis of power systems with  

E-Print Network (OSTI)

export? BACKGROUND The last decade has seen a remarkable increase in the number of wind installations. In Europe, Denmark is amongst the leading countries in wind generation in terms of installed capacity the consequences and challenges of high rates of wind generation from both a technical and economic perspective

Bak-Jensen, Birgitte

372

State of the Art in Floating Wind Turbine Design Tools  

SciTech Connect

This paper presents an overview of the simulation codes available to the offshore wind industry that are capable of performing integrated dynamic calculations for floating offshore wind turbines.

Cordle, A.; Jonkman, J.

2011-10-01T23:59:59.000Z

373

Offshore Renewable Energy Solutions  

E-Print Network (OSTI)

and sustainable energy supply. The UK is uniquely placed to harness its natural resources ­ wind, wave and tidalOffshore Renewable Energy Solutions #12;Cefas: meeting complex requirements The Centre science centre, Cefas provides a bridge between government and industry. We have unprecedented links

374

Transmission Requirements for Off-Shore Wind Integration: A study of the merits of AC and HVDC transmission connection options  

Science Conference Proceedings (OSTI)

This report presents a study of two transmission technologies, AC and HVDC, that could be employed to connect a distant wind farm to the Great Britain (GB) electricity transmission system. A review of the GB electricity transmission system industry codes makes it clear that particular consideration must be given in the design stage to the power factor and voltage control requirements at the interface between the wind farm and the transmission system. The ability of the transmission link and the wind ...

2013-11-20T23:59:59.000Z

375

Physical Modeling of Suction Caissons Loaded in Two Orthogonal Directions for Efficient Mooring of Offshore Wind Platforms.  

E-Print Network (OSTI)

??Over the past decade a number of Federal and State policies and programs have promoted the development of the wind energy industry, including the establishment… (more)

Chung, Jade

2012-01-01T23:59:59.000Z

376

Brazoria Offshore | Open Energy Information  

Open Energy Info (EERE)

Brazoria Offshore Brazoria Offshore Jump to: navigation, search Name Brazoria Offshore Facility Brazoria Offshore Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Coastal Point Energy LLC Developer Coastal Point Energy LLC Location Gulf of Mexico TX Coordinates 28.764°, -95.33° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.764,"lon":-95.33,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

377

The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis  

E-Print Network (OSTI)

2002) Economic Impacts of Wind Power in Kittitas County, WA.about Large Offshore Wind Power: Underlying Factors. EnergyOpinion on Offshore Wind Power - Interim Report. University

Hoen, Ben

2010-01-01T23:59:59.000Z

378

Identification of Wind Turbine Response to Turbulent Inflow Structures: Preprint  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory conducted an experiment to obtain detailed wind measurements and corresponding wind turbine measurements in order to establish a causal relationship between coherent turbulent structures and wind turbine blade fatigue loads. Data were collected for one entire wind season from October 2000 to May 2001. During this period, the wind turbine operated under atmospheric conditions that support the formation of coherent turbulent structures 31% of the time. Using the equivalent fatigue load parameter as a measure of wind turbine blade fatigue and using statistical measures of the turbulent fluctuations of the wind, general correlation between the turbulence and the wind turbine response is shown. Direct correlation cannot be resolved with 10-minute statistics for several reasons. Multiple turbulent structures can exist within a 10-minute record, and the equivalent fatigue load parameter is essentially a 10-minute statistic that cannot estimate turbine response to individual turbulent structures. Large-magnitude turbulent fluctuations in the form of instantaneous Reynolds stresses do not necessarily correspond directly to large-magnitude blade root moment amplitudes. Thus, additional work must be done to quantify the negative turbine response and to correlate this response to turbulent inflow parameters over time scales less than 10 minutes.

Hand, M. M.; Kelley, N. D.; Balas, M. J.

2003-06-01T23:59:59.000Z

379

On the Vertical Structure of Wind-Driven Sea Currents  

Science Conference Proceedings (OSTI)

The vertical structure of wind-driven sea surface currents and the role of wind-wave breaking in its formation are investigated by means of both field experiments and modeling. Analysis of drifter measurements of surface currents in the uppermost ...

Vladimir Kudryavtsev; Victor Shrira; Vladimir Dulov; Vladimir Malinovsky

2008-10-01T23:59:59.000Z

380

Adding Complex Terrain and Stable Atmospheric Condition Capability to the Simulator for On/Offshore Wind Farm Applications (SOWFA) (Presentation)  

SciTech Connect

This presentation describes changes made to NREL's OpenFOAM-based wind plant aerodynamics solver so that it can compute the stably stratified atmospheric boundary layer and flow over terrain. Background about the flow solver, the Simulator for Off/Onshore Wind Farm Applications (SOWFA) is given, followed by details of the stable stratification/complex terrain modifications to SOWFA, along with some preliminary results calculations of a stable atmospheric boundary layer and flow over a simple set of hills.

Churchfield, M. J.

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Adding Complex Terrain and Stable Atmospheric Condition Capability to the Simulator for On/Offshore Wind Farm Applications (SOWFA) (Presentation)  

DOE Green Energy (OSTI)

This presentation describes changes made to NREL's OpenFOAM-based wind plant aerodynamics solver so that it can compute the stably stratified atmospheric boundary layer and flow over terrain. Background about the flow solver, the Simulator for Off/Onshore Wind Farm Applications (SOWFA) is given, followed by details of the stable stratification/complex terrain modifications to SOWFA, along with some preliminary results calculations of a stable atmospheric boundary layer and flow over a simple set of hills.

Churchfield, M. J.

2013-06-01T23:59:59.000Z

382

3-D Radiative Transfer Modeling of Structured Winds in Massive Hot Stars with Wind3D  

E-Print Network (OSTI)

We develop 3-D models of the structured winds of massive hot stars with the Wind3D radiative transfer (RT) code. We investigate the physical properties of large-scale structures observed in the wind of the B-type supergiant HD 64760 with detailed line profile fits to Discrete Absorption Components (DACs) and rotational modulations observed with IUE in Si IV {\\lambda}1395. We develop parameterized input models Wind3D with large-scale equatorial wind density- and velocity-structures, or so-called `Co-rotating Interaction Regions' (CIRs) and `Rotational Modulation Regions' (RMRs). The parameterized models offer important advantages for high-performance RT calculations over ab-initio hydrodynamic input models. The acceleration of the input model calculations permits us to simulate and investigate a wide variety of physical conditions in the extended winds of massive hot stars. The new modeling method is very flexible for constraining the dynamic and geometric wind properties of RMRs in HD 64760. We compute that t...

Lobel, A; Blomme, R

2010-01-01T23:59:59.000Z

383

Wind Power Overview Windpoweristhefastestgrowingformofrenewableenergy,withpoten-  

E-Print Network (OSTI)

Wind Power Overview · Windpoweristhefastestgrowingformofrenewableenergy Offshore Wind Power for Florida? · AveragehouseholdelectricitycostsforFloridaare expectedtoincreaseby4.7%($7.50/month)each yearoverthenextdecade2 . · Offshore winds are typically stronger and more

384

Can Satellite Sampling of Offshore Wind Speeds Realistically Represent Wind Speed Distributions? Part II: Quantifying Uncertainties Associated with Distribution Fitting Methods  

Science Conference Proceedings (OSTI)

Remote sensing tools represent an attractive proposition for measuring wind speeds over the oceans because, in principle, they also offer a mechanism for determining the spatial variability of flow. Presented here is the continuation of research ...

S. C. Pryor; M. Nielsen; R. J. Barthelmie; J. Mann

2004-05-01T23:59:59.000Z

385

Local and synoptic mechanisms causing Southern California’s Santa Ana winds  

E-Print Network (OSTI)

in December and no strong offshore winds from April to earlythat lead to strong offshore surface winds in SouthernSanta Ana events based on offshore wind strength. This index

Hughes, Mimi; Hall, Alex

2010-01-01T23:59:59.000Z

386

Annual Report on U.S. Wind Power Installation, Cost, and Performance Trends: 2006  

E-Print Network (OSTI)

basis. Text Box 1. Offshore Wind Development Activities Inis some interest in offshore wind in several parts of theGeorgia TOTAL Proposed Offshore Wind Capacity 735 MW 650 MW

2008-01-01T23:59:59.000Z

387

Local and synoptic mechanisms causing Southern California’s Santa Ana winds  

E-Print Network (OSTI)

in December and no strong offshore winds from April to earlySanta Ana events based on offshore wind strength. This indexLiu 2003). These strong offshore wind events also transport

Hughes, Mimi; Hall, Alex

2010-01-01T23:59:59.000Z

388

Impact of Electric Industry Structure on High Wind Penetration Potential  

NLE Websites -- All DOE Office Websites (Extended Search)

273 273 July 2009 Impact of Electric Industry Structure on High Wind Penetration Potential M. Milligan and B. Kirby National Renewable Energy Laboratory R. Gramlich and M. Goggin American Wind Energy Association National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-550-46273 July 2009 Impact of Electric Industry Structure on High Wind Penetration Potential M. Milligan and B. Kirby National Renewable Energy Laboratory R. Gramlich and M. Goggin American Wind Energy Association

389

Jefferson Offshore | Open Energy Information  

Open Energy Info (EERE)

Jefferson Offshore Jefferson Offshore Facility Jefferson Offshore Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Coastal Point Energy LLC Developer Coastal Point Energy LLC Location Gulf of Mexico TX Coordinates 29.568°, -93.957° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.568,"lon":-93.957,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

390

National Wind Technology Center (Fact Sheet), National Wind Technology...  

NLE Websites -- All DOE Office Websites (Extended Search)

facility, fosters innovative wind energy technologies in land-based and offshore wind through its research and testing facilities and extends these capabilities to marine...

391

Gone with the Wind - The Potential Tragedy of the Common Wind  

E-Print Network (OSTI)

tion to Conflict over Wind Farms in the Kansas Flint Hills,1,471 MW of offshore wind farms were in operation aroundFurther Offshore and Larger Wind Farm Developments, BRrrIS

Lifshitz-Goldberg, Yaei

2010-01-01T23:59:59.000Z

392

NREL: Wind Research - Computer-Aided Engineering Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer-Aided Engineering Tools Computer-Aided Engineering Tools Illustration of an offshore wind turbine on a barge with an illustration of how the moorings would work. A simulation of a 5-MW wind turbine on an offshore semi-submersible with catenary moorings. The National Wind Technology Center (NWTC) at NREL develops advanced computer-aided engineering (CAE) tools to support the wind and water power industries with state-of-the-art design and analysis capabilities. We have developed many software tools that produce realistic models that simulate the behavior of wind and water power technologies in complex environments-storm winds, waves offshore, earthquake loading, and extreme turbulence-and model the effects of turbulent inflow, unsteady aerodynamic forces, structural dynamics, drivetrain response, control

393

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network (OSTI)

challenging. Installed Project Costs Continued to Rise inin installed wind project costs, wind turbine transactionand uncertain offshore project costs, and public acceptance

Bolinger, Mark

2010-01-01T23:59:59.000Z

394

NREL: Wind Research - @NWTC Newsletter  

NLE Websites -- All DOE Office Websites (Extended Search)

publications. Spring 2013 Issue Project and Program Updates Shedding Light on Offshore Wind Resources DOE Kicks Off Inaugural Collegiate Wind Competition Minimal Impacts Could...

395

Understanding of solar wind structure might be wrong  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar wind structure misunderstood Solar wind structure misunderstood Understanding of solar wind structure might be wrong The plasma particles flowing from the Sun and blasting past the Earth might be configured more as a network of tubes than a river-like stream. September 7, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

396

Wind: wind speed and wind power density GIS data at 10m and 50m...  

Open Energy Info (EERE)

data files of wind speed and wind power density at 10 and 50 m heights. Global data of offshore wind resource as generated by NASA's QuikScat SeaWinds scatterometer.

...

397

Wind: wind speed and wind power density maps at 10m and 50m above...  

Open Energy Info (EERE)

data files of wind speed and wind power density at 10 and 50 m heights. Global data of offshore wind resource as generated by NASA's QuikSCAT SeaWinds scatterometer.

...

398

Wind parks equivalent models using system identification techniques based on nonlinear model structures  

Science Conference Proceedings (OSTI)

In this paper models of Wind Parks (WPs) appropriate for simulation purposes of large power systems with high wind power penetration are developed. The proposed models of the WPs are developed using system identification theory with NARX model structures. ... Keywords: modeling, system identification, wind integration, wind parks, wind turbines

F. D. Kanellos; G. J. Tsekouras; N. E. Mastorakis

2009-08-01T23:59:59.000Z

399

Reliability-based framework for fatigue damage prognosis of bonded structural elements in aerospace composite structures  

E-Print Network (OSTI)

reliability of aging offshore platforms (Moan, 2005, 2007,mechanical systems, offshore platforms (Moan, 2005, 2007,composite UAV wing, offshore platforms, and composite wind

Gobbato, Maurizio

2011-01-01T23:59:59.000Z

400

The ionization structure of early-B supergiant winds  

E-Print Network (OSTI)

We present empirically determined ionization conditions for the winds of 106 luminous B0 to B5 stars observed by IUE. The UV wind lines are modelled to extract products of mass-loss rates (Mdot) times ionization fractions (Mdot q_i(w), where w = v/v_infty) for N V, C IV, Si IV, Si III, Al III and C II. We describe the general behaviour of the Mdot q_i(w) and their ratios, demonstrating that the wind ionization increases with distance from the star, contrary to recent findings for O star winds. Using empirical mass-loss rates (from H alpha observations) and model prescriptions, we derive mean q_i(w) values integrated over the wind, . These are quite small, never exceeding 15% for Al III or 2% for Si IV. This is surprising, since the for these ions clearly peak within the observed spectral range. We conclude that the low arise because the are underestimated by the wind models, which assume that the outflows are smooth when they are, in fact, highly structured.

R. K. Prinja; D. Massa; S. C. Searle

2004-12-13T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

EA-1792-S1: University of Maine's Deepwater Offshore Floating...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here Home EA-1792-S1: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine Harbor Test Site EA-1792-S1:...

402

A Review of Wind Project Financing Structures in the USA  

Science Conference Proceedings (OSTI)

The rapid pace of wind power development in the U.S. over the last decade has outstripped the ability of most project developers to provide adequate equity capital and make efficient use of project-related tax benefits. In response, the sector has created novel project financing structures that feature varying combinations of equity capital from project developers and third-party tax-oriented investors, and in some cases commercial debt. While their origins stem from variations in the financial capacity and business objectives of wind project developers, as well as the risk tolerances and objectives of equity and debt providers, each structure is, at its core, designed to manage project risk and allocate federal tax incentives to those entities that can use them most efficiently. This article surveys the six principal financing structures through which most new utility-scale wind projects (excluding utility-owned projects) in the U.S. have been financed from 1999 to the present. These structures include simple balance-sheet finance, several varieties of all-equity special allocation partnership 'flip' structures, and two leveraged structures. In addition to describing each structure's mechanics, the article also discusses its rationale for use, the types of investors that find it appealing and why, and its relative frequency of use in the market. The article concludes with a generalized summary of how a developer might choose one structure over another.

Bolinger, Mark A; Harper, John; Karcher, Matthew

2008-09-24T23:59:59.000Z

403

The Effects of the Island of Hawaii on Offshore Rainband Evolution  

Science Conference Proceedings (OSTI)

The diurnal cycle of airflow on the island of Hawaii and the structure of the low-level flow separation line between the island-induced offshore flow and incoming trade winds are reasonably well understood. This study examines the formation and ...

Jian-Jian Wang; Robert M. Rauber; Harry T. Ochs III; Richard E. Carbone

2000-04-01T23:59:59.000Z

404

Wind News  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

news Office of Energy Efficiency & Renewable news Office of Energy Efficiency & Renewable Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585 en New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters http://energy.gov/eere/articles/new-report-shows-trend-toward-larger-offshore-wind-systems-11-advanced-stage-projects offshore-wind-systems-11-advanced-stage-projects" class="title-link">New Report Shows Trend Toward Larger Offshore Wind Systems, with 11 Advanced Stage Projects Proposed in U.S. Waters

405

Structural testing of the North Wind 250 composite rotor joint  

DOE Green Energy (OSTI)

The North Wind 250 wind turbine is under development at Northern Power Systems (NPS) in Moretown, VT. The turbine uses a unique, flow-through, teetered-rotor design. This design eliminates structural discontinuities at the blade/hub interface by fabricating the rotor as one continuous structural element. To accomplish this, the two blade spars are joined at the center of the rotor using a proprietary bonding technique. Fatigue tests were conducted on the full-scale rotor joint at the National Renewable Energy Laboratory (NREL). Subsequent tests are now underway to test the full-scale rotor and hub assembly to verify the design assumptions. The test articles were mounted in dedicated test fixtures. For the joint test, a constant moment was generated across the joint and parent material. Hydraulic actuators applied sinusoidal loading to the test article at levels equivalent to 90% of the extreme wind load for over one million cycles. When the loading was increased to 112% of the extreme wind load, the joint failed by buckling. Strain levels were monitored at 14 locations inside and outside of the blade joint during the test. The tests were used to qualify this critical element of the rotor for field testing and to provide information needed to improve the structural design of the joint.

Musial, W; Link, H [National Renewable Energy Lab., Golden, CO (United States); Coleman, C [Northern Power Systems, Moretown, VT (United States)

1994-05-01T23:59:59.000Z

406

Formation of Cold Filamentary Structure from Wind Blown Superbubbles  

E-Print Network (OSTI)

The expansion and collision of two wind-blown superbubbles is investigated numerically. Our models go beyond previous simulations of molecular cloud formation from converging gas flows by exploring this process with realistic flow parameters, sizes and timescales. The superbubbles are blown by time-dependent winds and supernova explosions, calculated from population synthesis models. They expand into a uniform or turbulent diffuse medium. We find that dense, cold gas clumps and filaments form naturally in the compressed collision zone of the two superbubbles. Their shapes resemble the elongated, irregular structure of observed cold, molecular gas filaments and clumps. At the end of the simulations, between 65 and 80 percent of the total gas mass in our simulation box is contained in these structures. The clumps are found in a variety of physical states, ranging from pressure equilibrium with the surrounding medium to highly under-pressured clumps with large irregular internal motions and structures which are ...

Ntormousi, Evangelia; Fierlinger, Katharina; Heitsch, Fabian

2010-01-01T23:59:59.000Z

407

offshore resource | OpenEI  

Open Energy Info (EERE)

resource resource Dataset Summary Description Global Wind Potential Supply Curves by Country, Class, and Depth (quantities in GW) Source National Renewable Energy Laboratory Date Released July 12th, 2012 (2 years ago) Date Updated July 12th, 2012 (2 years ago) Keywords offshore resource offshore wind renewable energy potential Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon offshore_resource_100_vs2.xlsx (xlsx, 41.7 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote

408

Global ocean wind power sensitivity to surface layer stability  

E-Print Network (OSTI)

2005), Evaluation of global wind power, J. Geophys. Res. ,Pryor (2003), Can satellite sampling of offshore wind speedsrealistically represent wind speed distributions? , J. Appl.

Capps, Scott B; Zender, Charles S

2009-01-01T23:59:59.000Z

409

Optimal wind patterns for biological production in shelf ecosystems driven by coastal upwelling  

E-Print Network (OSTI)

accounts for offshore losses due to high winds, with thewinds in the direction out of the plane drive surface waters offshore (wind patterns is the degree of susceptibility to the influence of offshore

Yokomizo, Hiroyuki; Botsford, Louis W.; Holland, Matthew D.; Lawrence, Cathryn A.; Hastings, Alan

2010-01-01T23:59:59.000Z

410

Large-scale structure of the fast solar wind  

E-Print Network (OSTI)

2001), Connecting the Sun and the Solar Wind: Comparison of592: Solar Wind 11/SOHO 16, Connecting Sun and Heliosphere,scenario, the fast solar wind from the quiet Sun wind would

Bisi, M. M.; Fallows, R. A.; Breen, A. R.; Habbal, S. Rifai; Jones, R. A.

2007-01-01T23:59:59.000Z

411

Wind Energy Facilities and Residential Properties: The Effect of Proximity and View on Sales Prices  

E-Print Network (OSTI)

Offshore Wind Power: Underlying Factors. Energy Policy. 35(Wind Development on Local Property Values. Renewable Energy Policy

Hoen, Ben

2010-01-01T23:59:59.000Z

412

Wind Energy Facilities and Residential Properties: The Effect of Proximity and View on Sales Prices  

E-Print Network (OSTI)

Offshore Wind Power: Underlying Factors. Energy Policy,Wind Development on Local Property Values. Renewable Energy Policy

Hoen, Ben

2012-01-01T23:59:59.000Z

413

Model and Seismic Analysis of Large-scale Wind Turbine Tower Structure  

Science Conference Proceedings (OSTI)

The working condition of wind turbine tower structure with a massive engine room and revolving wind wheels is very complex. The paper simplify the wind turbine tower model with finite element analysis software --ANSYS, completed modal analysis firstly, ... Keywords: wind turbine tower, model analysis, resonance, time-history analysis, dynamic

Xiang Liu; Jiangtao Kong

2012-05-01T23:59:59.000Z

414

Wind Turbine Productivity and Development in Iran  

Science Conference Proceedings (OSTI)

This paper presents an overview of the status of wind energy productivity and development issues in Iran. It also presents a summary of the present global work on offshore energy, including the most recent works as well as potential offshore wind energy ... Keywords: Iran, development, offshore, turbine, wind

Ali Mostafaeipour; Saeid Abesi

2010-03-01T23:59:59.000Z

415

Nass Wind SAS | Open Energy Information  

Open Energy Info (EERE)

renewable energy holding company, primary involved in the French onshore and offshore wind market as project developers. References Nass & Wind SAS1 LinkedIn...

416

Offshore and Coastal Renewable Potential ecological benefits and  

E-Print Network (OSTI)

durch ihre geographische Lage für den Ausbau der Offshore- Windenergie an. Schon jetzt arbei- ten hier- PowerCluster ein. Er optimiert die Industrialisierungsprozesse im Be- reich Offshore-Windenergie, ver (BMBF) hat die Bewerbung für den Wind- PowerCluster von ForWind, dem Fraunhofer-Institut für Windenergie

Edinburgh, University of

417

Vibration and Structural Response of Hybrid Wind Turbine Blades  

E-Print Network (OSTI)

Renewable energy is a serious alternative to deliver the energy needs of an increasing world population and improve economic activity. Wind energy provides better environmental and economic benefits in comparison with the other renewable energy sources. Wind energy is capable of providing 72 TW (TW = 10^12 W) of electric power, which is approximately four and half times the world energy consumption of 15.8 TW as reported in 2006. Since power output extracted from wind turbines is proportional to the square of the blade length and the cube of the wind speed, wind turbine size has grown rapidly in the last two decades to match the increase in power output. As the blade length increases, so does its weight opening up design possibilities to introduce hybrid glass and carbon fiber composite materials as lightweight structural load bearing alternatives. Herein, we investigate the feasibility of introducing modular composite tubulars as well as hybrid sandwich composite skins in the next generation blades. After selecting a target energy output, 8 MW with 80 m blade, airfoil geometry and the layup for the skin as well as internal reinforcements are proposed. They are incorporated into the computational blade via linear shell elements for the skin, and linear beam elements for the composite tubulars to assess the relationship between weight reduction and structural performance. Computational simulations are undertaken to understand the static and dynamic regimes; specifically, displacements, stresses, and vibration modes. The results showed that the composite layers did not exhibit any damage. However, in the balsa core of the sandwich skin, the von Mises stress exceeded its allowable at wind speeds ranging from 11.0 m/sec to 12.6 m/sec. In the blades with composite tubular reinforcement, two different types of damage are observed: a. Stress concentrations at the tubular-skin attachments, and b. Highest von Mises stress caused by the flapping bending moment. The vibration studies revealed a strong coupling mode, bending and twist, at the higher natural frequencies of the blade with tubular truss configuration. The weight saving measures in developing lighter blades in this study did not detract from the blades structural response for the selected load cases.

Nanami, Norimichi

2010-12-01T23:59:59.000Z

418

EERE: Renewable Electricity Generation - Wind  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

traditional sources of energy. Photo of a line of offshore wind turbines in the ocean. Solar Geothermal Wind Water Photo of a wind turbine The U.S. Department of Energy (DOE)...

419

Design of Light Weight Structure for Wind Turbine Tower by Using ...  

Science Conference Proceedings (OSTI)

This paper reports a new design scheme of light weight structure for wind turbine tower. This design scheme is based on the integration of the nano-structured ...

420

Wind Energy Technologies  

Science Conference Proceedings (OSTI)

... Avg Wind Speed 7.5 m/s 8.74 m/s GE 2.x turbine family ... 1 to 48 Hour Wind Forecasting ... Danish Transmission Grid w/ Interconnects & Offshore Sites ...

2012-08-31T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

THREE-DIMENSIONAL STRUCTURE OF SOLAR WIND TURBULENCE  

SciTech Connect

We present a measurement of the scale-dependent, three-dimensional structure of the magnetic field fluctuations in inertial range solar wind turbulence with respect to a local, physically motivated coordinate system. The Alfvenic fluctuations are three-dimensionally anisotropic, with the sense of this anisotropy varying from large to small scales. At the outer scale, the magnetic field correlations are longest in the local fluctuation direction, consistent with Alfven waves. At the proton gyroscale, they are longest along the local mean field direction and shortest in the direction perpendicular to the local mean field and the local field fluctuation. The compressive fluctuations are highly elongated along the local mean field direction, although axially symmetric perpendicular to it. Their large anisotropy may explain why they are not heavily damped in the solar wind.

Chen, C. H. K.; Bale, S. D. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Mallet, A.; Schekochihin, A. A. [Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP (United Kingdom); Horbury, T. S. [Blackett Laboratory, Imperial College London, London SW7 2AZ (United Kingdom); Wicks, R. T., E-mail: chen@ssl.berkeley.edu [Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2012-10-20T23:59:59.000Z

422

PREDICTION OF DELAM INATION IN WIND TURBINE BLADE STRUCTURAL DETAILS John F. Mandell, Douglas S. Cairns  

E-Print Network (OSTI)

in Reference 3, available on the Sandia web site www.sandia.gov/Renewable_Energy/Wind_Energy/. DELAMINATION1 PREDICTION OF DELAM INATION IN WIND TURBINE BLADE STRUCTURAL DETAILS John F. Mandell, Douglas S materials structures such as wind turbine blades. Design methodologies to prevent such failures have

423

Assessing the Importance of Nonlinearities in the Development of a Substructure Model for the Wind Turbine CAE Tool FAST: Preprint  

DOE Green Energy (OSTI)

Design and analysis of wind turbines are performed using aero-servo-elastic tools that account for the nonlinear coupling between aerodynamics, controls, and structural response. The NREL-developed computer-aided engineering (CAE) tool FAST also resolves the hydrodynamics of fixed-bottom structures and floating platforms for offshore wind applications. This paper outlines the implementation of a structural-dynamics module (SubDyn) for offshore wind turbines with space-frame substructures into the current FAST framework, and focuses on the initial assessment of the importance of structural nonlinearities. Nonlinear effects include: large displacements, axial shortening due to bending, cross-sectional transverse shear effects, etc.

Damiani, R.; Jonkman, J.; Robertson, A.; Song, H.

2013-03-01T23:59:59.000Z

424

Seismic Performance Evaluation of the Jacket Type Offshore Platforms through Incremental Dynamic Analysis considering Soil-Pile-Structure Interaction  

Science Conference Proceedings (OSTI)

Of great interest in Performance-Based Earthquake Engineering (PBEE) is the accurate estimation of the seismic performance of structures. A performance prediction and evaluation procedure is based on nonlinear dynamics and reliability theory. In this method, a full integration over the three key stochastic models is as follow: ground motion hazard curve, nonlinear dynamic displacement demand, and displacement capacity. Further, both epistemic and aleatory uncertainties are evaluated and carried through the analysis.In this paper, jacket and soil-pile system have been modeled using Finite Element program (OpenSees) and the incremental dynamic analysis (IDA) are performed to investigate nonlinear behavior of offshore platforms. The system demand is determined by performing time history response analyses of the jacket under a suite of FEMA/SAC uniform hazard ground motions. The system capacity in terms of the drift ratio against incipient collapse is generally difficult to predict since the structural response goes into nonlinear range before collapse. All the analyses are performed in two directions and the results are compared with each others. The confidence level of a jacket in each direction for a given hazard level is calculated using the procedure described.

Asgarian, Behrouz [K.N. Toosi University of Technology Tehran Iran (Iran, Islamic Republic of); Shokrgozar, Hamed R.; Talarposhti, Ali Shakeri [K.N. Toosi University of Technology, Tehran (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

425

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

in a composite wind turbine rotor blade," Structural Healthdetection in composite wind turbine blades," Journal offor structural monitoring of wind turbine rotor blades," in

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

426

Diurnal Evolution of Three-Dimensional Wind and Temperature Structure in California's Central Valley  

Science Conference Proceedings (OSTI)

The diurnal evolution of the three-dimensional summer-season mean wind and temperature structure in California's Sacramento and San Joaquin Valleys (collectively called the Central Valley) is investigated using data from 22 radar wind profiler/...

Shiyuan Zhong; C. David Whiteman; Xindi Bian

2004-11-01T23:59:59.000Z

427

Structures and Seasonal Variations of Surface Winds Blowing through the Tsushima Strait  

Science Conference Proceedings (OSTI)

Surface winds blowing through the Tsushima Strait are statistically investigated using satellite wind measurements and atmospheric reanalysis data. This study first presents structures and seasonal variations of the northeasterly and ...

Teruhisa Shimada

2010-08-01T23:59:59.000Z

428

Large-scale structure of the fast solar wind  

E-Print Network (OSTI)

measurements of Solar Wind velocity, in press, Journal of1992), The Ulysses solar wind plasma experiment, AstronomyA. Hewish (1967), The solar wind outside the plane of the

Bisi, M. M.; Fallows, R. A.; Breen, A. R.; Habbal, S. Rifai; Jones, R. A.

2007-01-01T23:59:59.000Z

429

A Review of Wind Project Financing Structures in the USA  

E-Print Network (OSTI)

Annual Report on U.S. Wind Power Installation, Cost, andand Cumulative Growth in U.S. Wind Power Capacity CumulativeAbstract The rapid pace of wind power development in the

Bolinger, Mark A

2009-01-01T23:59:59.000Z

430

Brigantine OffshoreMW Phase 1 | Open Energy Information  

Open Energy Info (EERE)

Brigantine OffshoreMW Phase 1 Brigantine OffshoreMW Phase 1 Jump to: navigation, search Name Brigantine OffshoreMW Phase 1 Facility Brigantine OffshoreMW Phase 1 Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner OffshoreMW Developer Offshore MW Location Atlantic Ocean NJ Coordinates 39.584°, -73.77° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.584,"lon":-73.77,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

431

The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis  

E-Print Network (OSTI)

Offshore Wind Power: Underlying Factors. Energy Policy. 35(Wind Development on Local Property Values. Renewable Energy Policy

Hoen, Ben

2010-01-01T23:59:59.000Z

432

Estimated global ocean wind power potential from QuikSCAT observations, accounting for turbine characteristics and siting  

E-Print Network (OSTI)

and economic cost?benefit analysis of offshore wind energy,energy sources [Jacobson, 2009]. Onshore wind power costs

Capps, Scott B; Zender, Charles S

2010-01-01T23:59:59.000Z

433

Apex Offshore Phase 1 | Open Energy Information  

Open Energy Info (EERE)

1 1 Facility Apex Offshore Phase 1 Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Apex Wind Energy Developer Apex Offshore Wind / Outer Banks Ocean Energy Corp / Maersk Line Limited Location Atlantic Ocean NC Coordinates 34.169°, -77.12° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.169,"lon":-77.12,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

434

Apex Offshore Phase 2 | Open Energy Information  

Open Energy Info (EERE)

2 2 Facility Apex Offshore Phase 2 Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Apex Wind Energy Developer Apex Offshore Wind / Outer Banks Ocean Energy Corp / Maersk Line Limited Location Atlantic Ocean NC Coordinates 34.169°, -76.91° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.169,"lon":-76.91,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

435

Impact of Electric Industry Structure on High Wind Penetration Potential  

DOE Green Energy (OSTI)

This paper attempts to evaluate which balancing area (BA) characteristics best accommodate wind energy.

Milligan, M.; Kirby, B.; Gramlich, R.; Goggin, M.

2009-07-01T23:59:59.000Z

436

Executive Committee for the Implementing Agreement for Co-operation in the Research, Development, and Deployment of Wind Energy Systems  

E-Print Network (OSTI)

ISBN 0-9786383-4-4MESSAGE from the CHAIR Welcome to the 2009 IEA Wind Annual Report where we document the state of the wind industry and the results of cooperative research, development, and deployment efforts of our member governments and organizations. This was a record-setting year for wind energy in the IEA Wind member countries, which installed more than 20 gigawatts (GW) of new wind capacity. This growth led to a total of 111 GW of wind generating capacity, with more than 2 GW operating offshore. Wind energy supplied 2.5 % of the collective electricity needs of the member countries and provided additional economic benefits including more than 287,000 jobs and 37,000 million euro of economic activity. Following the IEA Wind 2009 to 2013 Strategic Plan, we are making significant progress on wind technology research to improve performance and reliability at competitive costs and to increase acceptance. We completed research in tasks addressing offshore wind technology deployment and the integration of wind and hydropower systems. Members began a new research task to improve the accuracy of computer codes and models used to estimate structural loads for offshore wind turbines. Technical expert meetings were held on: radar, radio, and links with wind turbines; sound propagation models and validation; and remote wind speed sensing techniques. Members agreed to continue research on power systems with large amounts of wind energy for another threeyear

unknown authors

2010-01-01T23:59:59.000Z

437

Adaptive variable structure control law for a variable speed wind turbine  

Science Conference Proceedings (OSTI)

The efficiency of the wind power conversions systems can be greatly improved using an appropriate control algorithm. In this work, an adaptive robust control for a doubly feed induction generator drive for variable speed wind power generation is described. ... Keywords: modeling and simulation, variable structure control, wind turbine control

Oscar Barambones; Jose Maria Gonzalez De Durana; Patxi Alkorta; Jose Antonio Ramos; Manuel De La Sen

2011-05-01T23:59:59.000Z

438

TOWARDS LIFE-CYCLE MANAGEMENT OF WIND TURBINES BASED ON STRUCTURAL HEALTH MONITORING  

E-Print Network (OSTI)

TOWARDS LIFE-CYCLE MANAGEMENT OF WIND TURBINES BASED ON STRUCTURAL HEALTH MONITORING K. Smarsly1) strategies can enable wind turbine manufacturers, owners, and operators to precisely schedule maintenance behavior of wind turbines and to reduce (epistemic) uncertainty. Both the resistance parameters

Stanford University

439

CT Offshore | Open Energy Information  

Open Energy Info (EERE)

CT Offshore CT Offshore Place Otterup, Denmark Zip 5450 Sector Wind energy Product Denmark-based consultancy which provides assistance for project management, damage assessment and stabilization as well as other activities related to wind farms and subsea maintenance. Coordinates 55.543228°, 10.40294° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":55.543228,"lon":10.40294,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

440

2008 WIND TECHNOLOGIES MARKET REPORT  

E-Print Network (OSTI)

to build a 350 MW offshore wind farm, and shortly after thisfarms, schools, businesses, and industrial facilities; distributed windwind turbines used to power the needs of residences, farms,

Bolinger, Mark

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Wind – challenges, opportunities, and PCS  

Science Conference Proceedings (OSTI)

... This improvement is obtained through reduction of turbine- ... of choice to transport power from wind power ... eg from deep water offshore to onshore). ...

2012-06-08T23:59:59.000Z

442

Offshore software maintenance methodology  

Science Conference Proceedings (OSTI)

Keywords: maintenance methodology, offshore maintenance, remote maintenance, software economics, software maintenance

M. Pavan Kumar; V. Sita Rama Das; N. Netaji

1996-05-01T23:59:59.000Z

443

The Structure of the Solar Wind in the Inner Heliosphere  

E-Print Network (OSTI)

November 2003 solar activity, Space Weather, 2, S03008, doi:1.3.3 Solar wind interaction with Earth 1.4 Space weather:space weather models for quiet solar wind conditions. To

Lee, Christina On-Yee

2010-01-01T23:59:59.000Z

444

Wind Driven Fires in Structures: Laboratory and 7-Story ...  

Science Conference Proceedings (OSTI)

... The winds caused a rapid change in the dynamics of the fire after the failure of a ... To examine the effect of wind on a fire incident in a single-story ...

2013-03-01T23:59:59.000Z

445

Large-scale structure of the fast solar wind  

E-Print Network (OSTI)

Scintillation measurements of Solar Wind velocity, in press,K. Sakurai (1992), The Ulysses solar wind plasma experiment,Telescope for the SOHO Mission, Solar Physics, 162, 291–312.

Bisi, M. M.; Fallows, R. A.; Breen, A. R.; Habbal, S. Rifai; Jones, R. A.

2007-01-01T23:59:59.000Z

446

A multi-scale approach to statistical and model-based structural health monitoring with application to embedded sensing for wind energy  

E-Print Network (OSTI)

in a composite wind turbine rotor blade," Structural Healthmonitoring of wind turbine rotor blades," in progress 2013.in a composite wind turbine rotor blade." The dissertation

Taylor, Stuart Glynn

2013-01-01T23:59:59.000Z

447

Facilitating wind development: the importance of electric industry structure  

Science Conference Proceedings (OSTI)

ISOs and RTOs, with their day-ahead and real-time markets, large geographies to aggregate diverse wind resources, large loads to aggregate with wind, large generation pools that tap conventional-generator flexibility, and regional transmission planning efforts, offer the best environments for wind generation to develop. (author)

Kirby, Brendan; Milligan, Michael

2008-04-15T23:59:59.000Z

448

Reduced Order Structural Modeling of Wind Turbine Blades  

E-Print Network (OSTI)

Conventional three dimensional structural analysis methods prove to be expensive for the preliminary design of wind turbine blades. However, wind turbine blades are large slender members with complex cross sections. They can be accurately modeled using beam models. The accuracy in the predictions of the structural behavior using beam models depends on the accuracy in the prediction of their effective section properties. Several techniques were proposed in the literature for predicting the effective section properties. Most of these existing techniques have limitations because of the assumptions made in their approaches. Two generalized beam theories, Generalized Timoshenko and Generalized Euler-Bernoulli, for the static analysis based on the principles of the simple 1D-theories are developed here. Homogenization based on the strain energy equivalence principle is employed to predict the effective properties for these generalized beam theories. Two efficient methods, Quasi-3D and Unit Cell, are developed which can accurately predict the 3D deformations in beams under the six fundamental deformation modes: extension, two shears, torsion and two flexures. These methods help in predicting the effective properties using the homogenization technique. Also they can recover the detailed 3D deformations from the predictions of 1D beam analysis. The developed tools can analyze two types of slender members 1) slender members with invariant geometric features along the length and 2) slender members with periodically varying geometric features along the length. Several configurations were analyzed for the effective section properties and the predictions were validated using the expensive 3D analysis, strength of materials and Variational Asymptotic Beam Section Analysis (VABS). The predictions from the new tools showed excellent agreement with full 3D analysis. The predictions from the strength of materials showed disagreement in shear and torsional properties. Explanations for the same are provided recalling the assumptions made in the strength of materials approach.

Jonnalagadda, Yellavenkatasunil

2011-08-01T23:59:59.000Z

449

Brigantine OffshoreMW Phase 2 | Open Energy Information  

Open Energy Info (EERE)

Brigantine OffshoreMW Phase 2 Brigantine OffshoreMW Phase 2 Facility Brigantine OffshoreMW Phase 2 Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner OffshoreMW Developer OffshoreMW Location Atlantic Ocean NJ Coordinates 39.348°, -73.969° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.348,"lon":-73.969,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

450

NREL: Wind Research - Production Tax Credit Extended by Congress  

NLE Websites -- All DOE Office Websites (Extended Search)

In addition to the PTC, the bill also covers investment tax credits for community and offshore wind projects. Denise Bode, head of the American Wind Energy Association (AWEA),...

451

The Impact of Wind Power Projects on Residential Property Values...  

NLE Websites -- All DOE Office Websites (Extended Search)

opposition to wind development (Paul, 2006) 100% and 85% of those opposed to offshore wind development believe aesthetics and property values, respectively, will be adversely...

452

Wind Turbine Generator Condition Monitoring via the Generator Control Loop.  

E-Print Network (OSTI)

??This thesis focuses on the development of condition monitoring techniques for application in wind turbines, particularly for offshore wind turbine driven doubly fed induction generators.… (more)

ZAGGOUT, MAHMOUD,NOUH

2013-01-01T23:59:59.000Z

453

Where is the boundary for state and federal offshore oil and gas ...  

U.S. Energy Information Administration (EIA)

Wind › Geothermal › ... Where is the boundary for state and federal offshore oil and gas production? For most coastal states, the state jurisdiction extends about ...

454

Ocean fronts in the Southern California Current System and their role in structuring zooplankton distributions, diel vertical migration, and size composition  

E-Print Network (OSTI)

distance offshore, leading to increased wind stress curl-1938) and offshore Ekman pumping due to wind stress curl (or to wind-driven curl upwelling further offshore or in

Powell, Jesse Russell

455

New England Wind Forum: A Wind Powering America Project - Newsletter #6 - September 2010, (NEWF), Wind and Water Power Program (WWPP)  

Wind Powering America (EERE)

6 - September 2010 6 - September 2010 WIND AND WATER POWER PROGRAM PIX 16204 New England and Northeast Look to the Horizon...and Beyond, for Offshore Wind In early December, Boston hosted the American Wind Energy Association's second annual Offshore Wind Project Workshop. U.S. and European offshore wind stakeholders convened to discuss the emerging U.S. offshore wind industry and provided evidence of a significant increase in activity along the Atlantic Coast from the Carolinas to Maine. The wind power industry and policymakers are looking to offshore for long-term growth, driven by aggressive policy goals, economic develop- ment opportunities, a finite set of attractive land-based wind sites, and immense wind energy potential at a modest distance from major population centers.

456

Wind Turbine Structural Health Monitoring - Energy Innovation Portal  

LANL researchers are developing unique sensors in tandem with proprietary high-fidelity finite element models as well as the LANL WindBlade modeling and simulation ...

457

The Structure of the Solar Wind in the Inner Heliosphere  

E-Print Network (OSTI)

sheet . . . . . . . . . . . . . . . Sun-to-Earth solar windthe Sun over a solar cycle . . . . . . . . . . . . . . . . .Kallenrode, M.B. : 2001, Sun and solar wind: Plasmas in the

Lee, Christina On-Yee

2010-01-01T23:59:59.000Z

458

Understanding of solar wind structure might be wrong  

NLE Websites -- All DOE Office Websites (Extended Search)

Understanding solar wind allows us to understand the initiation and evolution of geomagnetic storms," said Herbert Funsten, chief scientist for the International, Space &...

459

Offshore Technology  

E-Print Network (OSTI)

This report, and the roadmapping exercise that produced it, is the result of a series of transparent workshops held across the nation. A wealth of information was produced to compliment internal sources like the Energy Information Administration. The active participation of the Department's stakeholders is greatly appreciated. Walter Rosenbusch, Director of the Minerals Management Service (MMS) deserves special recognition. His partnership, participation and input were instrumental to the success of this effort. I also would like to thank my friend Governor Mark White for his participation and support of this effort. In addition, I thank the following workshop chairs and moderators for their participation and contribution to the roadmapping efforts: Mary Jane Wilson, WZI, Inc.; Ron Oligney, Dr. Michael Economides, and Jim Longbottom, University of Houston; John Vasselli, Houston Advanced Research Center; and Art Schroeder, Energy Valley. This report, however, does not represent the end of such long-range planning by the Department, its national labs, and its stakeholders. Rather it is a roadmap for accelerating the journey into the ultradeepwater Western Gulf of Mexico. The development of new technologies and commercialization paths, discoveries by marine biologists, and the fluctuations of international markets will continue to be important influences. With that in mind, let the journey begin. Emil Pea Deputy Assistant Secretary for Natural Gas and Petroleum Technology OFFSHORE TECHNOLOGY ROADMAP FOR THE ULTRA-DEEPWATER GULF OF MEXICO U.S. Department of Energy Maximumhistm,183 oil product,0 ratd for Gulf of Mexico wells. Taller barsindicat higherproduct44 ratdu The dat show numerous deepwat, oil wells producedat significant2 higherrate tt ever seen in t, Gulf of ...

Roadmap For The; Deepwater Gulf; Of Mexico

2000-01-01T23:59:59.000Z

460

NREL: National Wind Technology Center Home Page  

NLE Websites -- All DOE Office Websites (Extended Search)

National Wind Technology Center National Wind Technology Center National Wind Technology Center NREL's National Wind Technology Center (NWTC) is the nation's premier wind energy technology research facility. The NWTC advances the development of innovative land-based and offshore wind energy technologies through its research and testing facilities. Researchers draw on years of experience and their wealth of expertise in fluid dynamics and structural testing to also advance marine and hydrokinetic water power technologies. At the NWTC researchers work side-by-side with industry partners to develop new technologies that can compete in the global market and to increase system reliability and reduce costs. Learn more about the facilities and capabilities at the NWTC by viewing our fact sheet.

Note: This page contains sample records for the topic "offshore wind structures" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Offshore Code Comparison Collaboration Continuation (OC4), Phase...  

NLE Websites -- All DOE Office Websites (Extended Search)

compari- son; OC4 INTRODUCTION The analysis of offshore wind turbines relies on aero-hydro-servo-elastic simulation codes. These coupled time-domain-based tools take into ac-...

462

NREL: Wind Research - Wind Resource Assessment  

NLE Websites -- All DOE Office Websites (Extended Search)

Wind Resource Assessment Wind Resource Assessment A map of the United States is color-coded to indicate the high winds at 80 meters. This map shows the wind resource at 80 meters for both land-based and offshore wind resources in the United States. Correct estimation of the energy available in the wind can make or break the economics of wind plant development. Wind mapping and validation techniques developed at the National Wind Technology Center (NWTC) along with collaborations with U.S. companies have produced high-resolution maps of the United States that provide wind plant developers with accurate estimates of the wind resource potential. State Wind Maps International Wind Resource Maps Dynamic Maps, GIS Data, and Analysis Tools Due to the existence of special use airspace (SUA) (i.e., military airspace

463

Wind Structure in a Supercell Thunderstorm as Measured by a UHF Wind Profiler  

Science Conference Proceedings (OSTI)

A mesocyclone associated with a tornadic supercell passed almost directly over the Lamont, Oklahoma, 404-MHz wind profiler on 24 May 1998. The archived spectral moment data, including 6-min resolution radial velocity measurements from the ...

Gregor S. Lehmiller; Howard B. Bluestein; Paul J. Neiman; F. Martin Ralph; Wayne F. Feltz

2001-08-01T23:59:59.000Z

464

A Review of Wind Project Financing Structures in the USA  

E-Print Network (OSTI)

capital to finance wind project costs. Roughly $28 billion (to fund all of the project costs and sufficient tax appetitefunds 100% of the project costs as equity in the project

Bolinger, Mark A

2009-01-01T23:59:59.000Z

465

Texas Offshore Pilot Research Project | Open Energy Information  

Open Energy Info (EERE)

Texas Offshore Pilot Research Project Texas Offshore Pilot Research Project Jump to: navigation, search Name Texas Offshore Pilot Research Project Facility Texas Offshore Pilot Research Project Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Baryonyx Corporation Developer Baryonyx Corporation Location Gulf of Mexico TX Coordinates 26.186°, -97.077° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":26.186,"lon":-97.077,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

466

Wind Energy's New Role in Supplying the World's Energy: What Role Will Structural Health Monitoring Play?  

DOE Green Energy (OSTI)

Wind energy installations are leading all other forms of new energy installations in the United States and Europe. In Europe, large wind plants are supplying as much as 25% of Denmark's energy needs and 8% of the electric needs for Germany and Spain, who have more ambitious goals on the horizon. Although wind energy only produces about 2% of the current electricity demand in the United States, the U.S. Department of Energy, in collaboration with wind industry experts, has drafted a plan that would bring the U.S. installed wind capacity up to 20% of the nation's total electrical supply. To meet these expectations, wind energy must be extremely reliable. Structural health monitoring will play a critical role in making this goal successful.

Butterfield, S.; Sheng, S.; Oyague, F.

2009-12-01T23:59:59.000Z

467

Asymmetric Hurricane Boundary Layer Structure from Dropsonde Composites in Relation to the Environmental Vertical Wind Shear  

Science Conference Proceedings (OSTI)

This study investigates the asymmetric structure of the hurricane boundary layer in relation to the environmental vertical wind shear in the inner core region. Data from 1878 GPS dropsondes deployed by research aircraft in 19 hurricanes are ...

Jun A. Zhang; Robert F. Rogers; Paul D. Reasor; Eric W. Uhlhorn; Frank D. Marks Jr.

2013-11-01T23:59:59.000Z

468

Asymmetric Hurricane Boundary Layer Structure from Dropsonde Composites in Relation to the Environmental Vertical Wind Shear  

Science Conference Proceedings (OSTI)

This study investigates the asymmetric structure of the hurricane boundary layer in relation to the environmental vertical wind shear in the inner core region. Data from 1878 GPS dropsondes deployed by research aircraft in 19 hurricanes are ...

Jun A. Zhang; Robert F. Rogers; Paul D. Reasor; Eric W. Uhlhorn; Frank D. Marks Jr.

469

Mean Structure of the Nocturnal Boundary Layer under Strong and Weak Wind Conditions: EPRI Case Study  

Science Conference Proceedings (OSTI)

The major objective of this study was to analyze the mean structure and evolution of the nocturnal boundary layer (NBL) under strong and weak wind conditions. Meteorological data collected during the plume-validation experiment conducted by the ...

T. B. P. S. Rama V. Krishna; Maithili Sharan; S. G. Gopalakrishnan; Aditi

2003-07-01T23:59:59.000Z

470

The Three-Dimensional Axisymmetric Wind Field Structure of the Spencer, South Dakota, 1998 Tornado  

Science Conference Proceedings (OSTI)

The three-dimensional axisymmetric wind field structure of the violent Spencer, South Dakota, 1998 tornado was analyzed using the ground-based velocity track display (GBVTD) method. Data from a Doppler on Wheels mobile radar, collected at very ...

Karen Kosiba; Joshua Wurman

2010-09-01T23:59:59.000Z

471

NREL: Wind Research - News Release Archives  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Management (BOEM) needed a process to delineate the bureau's proposed offshore Wind Energy Areas (WEA) into auctionable leasing areas, the agency turned to the National...

472

Community wind power ownership schemes in Europe and their relevance to the United States  

E-Print Network (OSTI)

the The world’s largest offshore wind farm to date – a 40 MWwind project ever, as well as the first sited offshore. Theoffshore plants that become operational prior to 2007. At the end of the initial period, a wind

Bolinger, Mark

2001-01-01T23:59:59.000Z

473

Engineering and Economic Evaluation of Utility-Scale Wind Power Plants  

Science Conference Proceedings (OSTI)

This report addresses the status of wind turbine and related technology for both onshore and offshore applications and presents the results of an engineering and economic evaluation of the performance and cost of onshore and offshore wind power plants.

2010-05-20T23:59:59.000Z

474

innovati nNREL Computer Models Integrate Wind Turbines with  

E-Print Network (OSTI)

innovati nNREL Computer Models Integrate Wind Turbines with Floating Platforms Far off the shores for today's seabed-mounted offshore wind turbines. For the United States to tap into these vast offshore wind energy resources, wind turbines must be mounted on floating platforms to be cost effective

475

Wind turbine control systems: Dynamic model development using system identification and the fast structural dynamics code  

DOE Green Energy (OSTI)

Mitigating the effects of damaging wind turbine loads and responses extends the lifetime of the turbine and, consequently, reduces the associated Cost of Energy (COE). Active control of aerodynamic devices is one option for achieving wind turbine load mitigation. Generally speaking, control system design and analysis requires a reasonable dynamic model of {open_quotes}plant,{close_quotes} (i.e., the system being controlled). This paper extends the wind turbine aileron control research, previously conducted at the National Wind Technology Center (NWTC), by presenting a more detailed development of the wind turbine dynamic model. In prior research, active aileron control designs were implemented in an existing wind turbine structural dynamics code, FAST (Fatigue, Aerodynamics, Structures, and Turbulence). In this paper, the FAST code is used, in conjunction with system identification, to generate a wind turbine dynamic model for use in active aileron control system design. The FAST code is described and an overview of the system identification technique is presented. An aileron control case study is used to demonstrate this modeling technique. The results of the case study are then used to propose ideas for generalizing this technique for creating dynamic models for other wind turbine control applications.

Stuart, J.G.; Wright, A.D.; Butterfield, C.P.

1996-10-01T23:59:59.000Z

476

OpenEI - wind speed  

Open Energy Info (EERE)

NREL GIS Data: Global NREL GIS Data: Global Offshore Wind http://en.openei.org/datasets/node/869 GIS data for offshore wind speed (meters/second).  Specified to Exclusive Economic Zones (EEZ).Wind resource based on NOAA blended sea winds and monthly wind speed at 30km resolution, using a 0.11 wind sheer to extrapolate 10m - 90m.  Annual average  >= 10 months of data, no nulls. License

Type of License:  Other (please specify below)

477

The Structure of the Ageostrophic Wind Field in Baroclinic Waves  

Science Conference Proceedings (OSTI)

A high-pass filtered time series of the 500-mb height at a grid point in the Pacific storm track is regressed against the ageostrophic wind field at all grid points on the NMC grids for nine winters in order to determine the characteristic ...

Gyu Ho Lim; James R. Holton; John M. Wallace

1991-08-01T23:59:59.000Z

478

Condition monitoring of offshore pipelines using vibration based methods.  

E-Print Network (OSTI)

??[Truncated abstract] Subsea pipelines are essential structural systems to transport natural oil or gas from offshore oil wells to an onshore location. Damage along a… (more)

Peng, Xue-Lin

2012-01-01T23:59:59.000Z

479

Dynamic response of fixed offshore platforms to environmental loads.  

E-Print Network (OSTI)

??In this thesis a simplified method for dynamic response of jacket type offshore structures to extreme environmental load is investigated using existing experience and the… (more)

Azarhoushang, Azin

2010-01-01T23:59:59.000Z

480

Fatigue of Wind Blade Laminates:Fatigue of Wind Blade Laminates: Effects of Resin and Fabric Structure  

E-Print Network (OSTI)

Fatigue of Wind Blade Laminates:Fatigue of Wind Blade Laminates: Effects of Resin and Fabric University MCARE 2012 #12;Outline · Overview of MSU Fatigue Program on Wind Blade MaterialsWind Blade Wind Blade Component Materials Acknowledgements: Sandia National Laboratories/DOE (Joshua Paquette

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481

DEWI OCC Offshore and Certification Centre GmbH DEWI OCC | Open Energy  

Open Energy Info (EERE)

DEWI OCC Offshore and Certification Centre GmbH DEWI OCC DEWI OCC Offshore and Certification Centre GmbH DEWI OCC Jump to: navigation, search Name DEWI-OCC Offshore and Certification Centre GmbH (DEWI-OCC) Place Cuxhaven, Germany Sector Wind energy Product A certification body for onshore and offshore wind turbines and components, accredited by the DAP (Deutsches Akkreditierungssystem Prüfwesen). References DEWI-OCC Offshore and Certification Centre GmbH (DEWI-OCC)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. DEWI-OCC Offshore and Certification Centre GmbH (DEWI-OCC) is a company located in Cuxhaven, Germany . References ↑ "DEWI-OCC Offshore and Certification Centre GmbH (DEWI-OCC)" Retrieved from

482

Making european-style community wind power development work in the United States  

E-Print Network (OSTI)

over the proposed 420 MW offshore Cape Wind project, and theoffshore from – their borders, and are turning to community-scale wind

Bolinger, Mark A.

2004-01-01T23:59:59.000Z

483

influence of met-ocean conditions on the loads analysis of a Floating wind turbine.  

E-Print Network (OSTI)

??Better wind resources far from the shore and in deeper seas have encouraged the offshore wind industry to look into floating platforms. The International Electrotechnical… (more)

Barj, Lucie

2013-01-01T23:59:59.000Z

484

Wind: wind power density GIS data at 50m above ground and 400m...  

Open Energy Info (EERE)

Sri Lanka

(Purpose):  To provide information on the wind resource potential within Sri Lanka and selected offshore areas
<...

485

Wind News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wind News Wind News Wind News RSS February 7, 2011 Salazar, Chu Announce Major Offshore Wind Initiatives Strategic plan, $50 million in R&D funding, identified Wind Energy Areas will speed offshore wind energy development December 16, 2010 Department of Energy Finalizes Loan Guarantee to Support World's Largest Wind Project 845-Megawatt Wind Facility Will Create Hundreds of Jobs and Avoid Over 1.2 Million Tons of Carbon Dioxide Annually October 29, 2010 Statement by Energy Secretary Steven Chu on Today's Grand Opening of the Nordex Manufacturing Facility in Jonesboro, Arkansas Recovery Act investment creates jobs, helps lay the foundation for a clean energy economy September 13, 2010 DOE Announces More than $5 Million to Support Wind Energy Development Funds to Enhance Short-Term Wind Forecasting and Accelerate Midsize Wind

486

Fully coupled dynamic analysis of a floating wind turbine system  

E-Print Network (OSTI)

The use of wind power is in a period of rapid growth worldwide and wind energy systems have emerged as a promising technology for utilizing offshore wind resources for the large scale generation of electricity. Drawing ...

Withee, Jon E

2004-01-01T23:59:59.000Z

487

Reassessing Wind Potential Estimates for India: Economic and Policy Implications  

E-Print Network (OSTI)

Assessment of Potential for Wind Farms in India, RenewableNetworks for Offshore Wind Farms, Bremen, Germany, 14-15Assessment of Potential for Wind Farms in India, Renewable

Phadke, Amol

2012-01-01T23:59:59.000Z

488

Wind Power Technology Status and Performance and Cost Estimates - 2008  

Science Conference Proceedings (OSTI)

This report addresses the status of wind turbine and related technology for both onshore and offshore applications, and the performance and cost of onshore wind power plants. It also presents a sample analysis of wind project financial performance.

2008-12-15T23:59:59.000Z

489

Optimal Self Tuned Variable Structure Sliding Mode for Coordinated Wind-FC-Diesel Utilization Scheme  

Science Conference Proceedings (OSTI)

The modeling and coordinated control strategy based on self tuned variable structure sliding mode dynamic controller for a wind–diesel-fuel cell renewable generation system with battery backup are discussed in this paper. The proposed hybrid scheme ... Keywords: Diesel-driven generator, Wind induction generator, PMDC motor drives, fuel cell, Backup Battery, Dynamic Filter Compensator, Green Power Filter, Multi Objective Particle Swarm Optimization MOPSO

Adel M. Sharaf; Adel A. A. El-Gammal

2010-05-01T23:59:59.000Z

490

High-R Walls for New Construction Structural Performance: Wind Pressure Testing  

Science Conference Proceedings (OSTI)

This technical report is focused primarily on laboratory testing that evaluates wind pressure performance characteristics for wall systems constructed with exterior insulating sheathing. This research and test activity will help to facilitate the ongoing use of non-structural sheathing options and provide a more in-depth understanding of how wall system layers perform in response to high wind perturbations normal to the surface.

DeRenzis, A.; Kochkin, V.

2013-01-01T23:59:59.000Z

491

2010 Cost of Wind Energy Review  

DOE Green Energy (OSTI)

This document provides a detailed description of NREL's levelized cost of wind energy equation, assumptions and results in 2010, including historical cost trends and future projections for land-based and offshore utility-scale wind.

Tegen, S.; Hand, M.; Maples, B.; Lantz, E.; Schwabe, P.; Smith, A.

2012-04-01T23:59:59.000Z

492

Energy Department Announces New Investments in Pioneering U.S. Offshore  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pioneering U.S. Pioneering U.S. Offshore Wind Projects Energy Department Announces New Investments in Pioneering U.S. Offshore Wind Projects December 12, 2012 - 2:00pm Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - Underscoring the Obama Administration's all-of-the-above strategy to develop more secure, domestic energy sources and strengthen American competitiveness in the global market, U.S. Energy Secretary Steven Chu today announced seven offshore wind awards for projects in Maine, New Jersey, Ohio, Oregon, Texas and Virginia. As part of the Energy Department's broader efforts to launch an offshore wind industry in the United States, these engineering, design and deployment projects will support innovative offshore installations in state and federal waters for commercial operation by 2017.

493

New England Wind Forum: New England Wind Projects  

Wind Powering America (EERE)

Projects in New England Building Wind Energy in New England Wind Resource Wind Power Technology Economics Markets Siting Policy Technical Challenges Issues Small Wind Large Wind Newsletter Perspectives Events Quick Links to States CT MA ME NH RI VT Bookmark and Share New England Wind Projects This page shows the location of installed and planned New England wind projects. Find windfarms, community-scale wind projects, customer-sited wind projects, small wind projects, and offshore wind projects. Read more information about how to use the Google Map and how to add your wind project to the map. Text version New England Wind Energy Projects Connecticut, East Canaan Wind Connecticut, Klug Farm Connecticut, Phoenix Press Connecticut, Wind Colebrook (South and North)

494

NREL Wind Turbine Blade Structural Testing of the Modular Wind Energy MW45 Blade: Cooperative Research and Development Final Report, CRADA Number CRD-09-354  

DOE Green Energy (OSTI)

This CRADA was a purely funds-in CRADA with Modular Wind Energy (MWE). MWE had a need to perform full-scale testing of a 45-m wind turbine blade. NREL/NWTC provided the capabilities, facilities, and equipment to test this large-scale MWE wind turbine blade. Full-scale testing is required to demonstrate the ability of the wind turbine blade to withstand static design load cases and demonstrate the fatigue durability. Structural testing is also necessary to meet international blade testing certification requirements. Through this CRADA, MWE would obtain test results necessary for product development and certification, and NREL would benefit by working with an industrial partner to better understand the unique test requirements for wind turbine blades with advanced structural designs.

Hughes, S.

2012-05-01T23:59:59.000Z

495

Wind Power Career Chat  

DOE Green Energy (OSTI)

This document will teach students about careers in the wind energy industry. Wind energy, both land-based and offshore, is expected to provide thousands of new jobs in the next several decades. Wind energy companies are growing rapidly to meet America's demand for clean, renewable, and domestic energy. These companies need skilled professionals. Wind power careers will require educated people from a variety of areas. Trained and qualified workers manufacture, construct, operate, and manage wind energy facilities. The nation will also need skilled researchers, scientists, and engineers to plan and develop the next generation of wind energy technologies.

Not Available

2011-01-01T23:59:59.000Z

496

Definition: Wind power | Open Energy Information  

Open Energy Info (EERE)

Wind power Wind power Jump to: navigation, search Dictionary.png Wind power The amount of power available to a wind turbine depends on: air density, wind speed and the swept area of the rotor. While the power is proportional to air density and swept area, it varies with the cube of wind speed, so small changes in wind speed can have a relatively large impact on wind power.[1] View on Wikipedia Wikipedia Definition Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power, windpumps for water pumping or drainage, or sails to propel ships. Large wind farms consist of hundreds of individual wind turbines which are connected to the electric power transmission network. Offshore wind is steadier and stronger than on land, and offshore farms

497