ECN: DOWEC
The successful completion of the DOWEC project is a milestone for us. Six partners with totally different experience and backgrounds worked together on fundamental scientific as well as industrial development tasks. The multi-partner approach proved not always an easy one. It provided at the same time excellent opportunities to grow into a new exiting business field with great future promise, and to reflect on early offshore visions and expectations of DOWEC ‘s founding fathers. The partners in the DOWEC project are: - Turbine manufacturer NEG Micon Holland,- Rotor blade manufacturer LM Glasfiber Holland,- Marine and Dredging Contractors Van Oord ACZ,- Energy research Centre of the Netherlands (www.ecn.nl),-Delft University Wind Energy Research Institute 'DUWIND', and- Ballast Nedam.
The project is funded by NOVEM and the Economy Ecology and Technology programme of the Dutch Ministry of Economic Affairs (www.eet.nl).
An overview of offshore wind energy and the DOWEC project in specific is reported in "Offshore wind energy: the road to maturity". An introduction to the publicly available technical reports is given in "Executive summary of the public research activities". Both documents can be ordered at the secretary of Wind Energy at ECN:
- phone: +31 224 56 4115
- fax: +31 224 56 8214
- e-mail: wind@ecn.nl
The technical reports, the two overview documents mentioned above, and the conference papers can be downloaded (in PDF format), see the links at the end of this page. If desired a CD-ROM with all the documents can be ordered at the secretariat of Wind Energy at ECN.
On behalf of the DOWEC group we do sincerely hope that you will enjoy reading the reports, and that some of our spirit and strong belief in the future of offshore wind energy will be passed on
December 2003
DOWEC Steering Committee
Breakdown of generating costs of the baseline 600 MW farm
Links to downloadable PDF documents:
1. Two reports containing an overview over the project
- Offshore wind energy: the road to maturity (very large document - 64 MB)
- Executive summary of the public research activities
2. The technical reports: (all documents of the reference list in the executive summary)
- 10004_001.pdf - Dynamic loads
- 10005_002.pdf - Blade design
- 10017_001.pdf - Blade pitch control algorithms
- 10021_002.pdf - Demonstration with optical fibres by Smart Fibres Ltd
- 10023_002.pdf - Concept study bottom protection around pile foundation of 3MW turbine
- 10032_002.pdf - Description of activities on buckling
- 10033_000.pdf - Cable installation study
- 10034_002.pdf - Special design features for offshore rotor
- 10035_000.pdf - Pitch control algorithm
- 10036_000.pdf - Scoping results drive train damping
- 10037_002.pdf - Overall cost-modelling of the DOWEC lifecycle in a wind farm
- 10038_002.pdf - Embedment test with optical fibres
- 10041_000.pdf - Terms of reference
- 10042_003.pdf - Electrical grid requirements
- 10044_000.pdf - Turbulence and wind shear
- 10045_002.pdf - Electrical system baseline design
- 10046_009.pdf - Aero-elastic modelling of the DOWEC 6 MW pre-design in PHATAS
- 10047_002.pdf - Wind and wave conditions
- 10048_004.pdf - Estimation of turbine reliability figures
- 10049_004.pdf - Installation method 2.75 MW OWEC
- 10050_001.pdf - Scour protection
- 10051_001.pdf - Soil data
- 10052_001.pdf - Foundation design monopile
- 10061_003.pdf - Suction bucket foundation
- 10063_002.pdf - Tripod support structure
- 10064_001.pdf - Foundation design monopile. Variation of waterdepth and pile diameter
- 10065_001.pdf - Installation method 6.0 MW OWEC
- 10067_001.pdf - Foundation design monopile. Comparison extra steel consumption versus scour protection
- 10068_002.pdf - DOWEC cost model
- 10069_003.pdf - Fatigue, ring bending and the possible use of a concrete monopile (This document is not yet available)
- 10070_003.pdf - One-dimensional variations: Blades
- 10071_001.pdf - Alternative transition piece (This document is not yet available)
- 10072_001.pdf - Offshore workspace
- 10074_000.pdf - Installation of a wind turbine in one step
- 10075_000.pdf - Reduce inspection survey offshore cable
- 10076_000.pdf - Thermal resistance of soil
- 10077_001.pdf - Grid failure and availability calculation
- 10078_002.pdf - The effect of profile deviations of the DOWEC blade on wind turbine power production
- 10079_001.pdf - Wet cable connector
- 10080_002.pdf - O&M aspects of the 500 MW offshore wind farm at NL7
- 10082_004.pdf - &M aspects of the wind farm
- 10083_001.pdf - Aeroelastic modelling of the blade
- 10084_000.pdf - Blade variant with increased taper
- 10086_001.pdf - Estimation of turbine maintenance figures
- 10088_000.pdf - Scour protection
- 10089_001.pdf - Load set calculation
- 10090_001.pdf - O&M aspects. Optimisation study
- 10093_000.pdf - Alternative connection between pile and tower
- 10094_002.pdf - Wind turbine control algorithms
- 10095_001.pdf - Effects of large offshore wind farms on birds, a literature study (This document is not yet available)
3. The conference papers:
- Concept study, OWEMES 2000
- Cost-modelling, EWEA 2001
- Support structures, EWEA 2001
- Wind and waves, EWEA 2001
- Cost model, EWEC 2001
- RAMS, EWEC 2001
- RAMS, MAREC 2001
- Support structures, MAREC 2001
- Overview electrical, EPE-PEMC 2002
- Accesibility, MAREC 2002
- Concept variation, MAREC 2002
- Wind and waves, WWEC 2002
- Control for damping, EWEC 2003
- Cost modelling, EWEC 2003
- Design variations, EWEC 2003
- Development of control, EWEC 2003
- Operation and Maintenance, EWEC 2003
- R&D-needs for O&M, EWEC 2003
- Concept study, NDEC 2003
- Accessibility, OWEMES 2003
- Design variations, OWEMES 2003
- Support structures, OWEMES 2003
- Cable and shunt, PCIM 2003
- Electrical system, PCIM 2003
- Accessibility, Wind Engineering 2003
- References for the conference papers
Contact: H.B. (Ben) Hendrikshendriks@ecn.nlTel.: +31 (0)224.56.4900
