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Innovations in Offshore Wind Technology through R&D

www.nowitech.no

John Olav Giæver Tande

Director NOWITECH

Senior Research Scientist

SINTEF Energy Research

John.tande@sintef.no

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A big global market for offshore wind

►Firm European commitment►2020: 40 GW; EUR 66bn►2030: 150 GW, EUR 145bn►Significant developments in

China, Japan, Korea and USA►Near-term large market is for

bottom-fixed wind farms►Increasing interest in

developing floating concepts

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Main drivers► Battle climate change► Security of supply► Industry value creation

Copy from IEA Energy Technology Perspectives 2012

Stern Review (2006): ..strong, early action on climate change far outweigh the costs of not acting.

IEA 2DS scenario: 15 % wind in global fuel mix by 2050

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NOWITECH in brief► a joint pre-competitive

research effort

► focus on deep offshore wind technology (+30 m)

► budget (2009-2017) EUR 40 millions

► co-financed by the Research Council of Norway, industry and research partners

► 25 PhD/post doc grants

► Vision: large scale deployment internationally leading

Research partners:► SINTEF (host)► IFE► NTNU

Industry partners:► Devold AMT AS► Det Norske Veritas► DONG Energy Power► EDF R&D► Fedem Technology AS► Fugro OCEANOR AS► GE Wind Power AS► Kværner Verdal► NTE Holding AS► SmartMotor AS► Statkraft► Statnett SF► Statoil Petroleum AS► Vestas► Vestavind Offshore

Associated research partners:► DTU Wind Energy► MIT► NREL► Fraunhofer IWES► Uni. Strathclyde► TU Delft► Nanyang TU

Associated industry partners:► Access Mid-Norway► Energy Norway► Enova► Innovation Norway► NCEI► NORWEA► NVE► Wind Cluster Mid-

Norway

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Multidisciplinary Research Challenges

Key issue: Innovations reducing cost of energy from offshore wind

Wind turbine

Sub-structure

Grid

O&M Wind turbine

Sub-structure

Grid

O&M

LPC distribution ofoffshore wind farm

(example)

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Exciting floating concepts

BlueH (2007, 80 kW)HiPRwind

(2009, 2,3 MW)

NREL/MIT

(2011, 2,3 MW)

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The HyWind demo – in operation since Sept. 2009

Turbine power 2,3 MW

Turbine weight 138 tons

Draft hull 100 m

Nacelle height 65 m

Rotor diameter 82,4 m

Water depth 150–700 m

Displacement 5300 tons

Mooring 3 lines

D @ water line 6 m

D submerged 8,3 m

Data from Statoil

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One big advantage: relatively easy installation!

► In-shore assembly in sheltered waters

► Tug-boats for transport to site for installation

► Alternative: WindFlip?

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It is stable? Yes; according to Simulations and Test in Ocean Basin Lab (2005)

100 150 200 250 300-15

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Time (s)

Tow

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dis

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cem

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(m)

With stabilizerWithout stabilizer

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Connection to oil and gas installations

www.sway.no

Electr icloads

~Gasturbines

Windturbines

(s torage)

subseacable

► Wind farm operate in parallel with gas turbines Saves fuel (~300 Sm3/MWhel) and emissions (CO2: ~600 kg/MWhel)

► Little space available No extra transformer at oil rig

► Energy storage likely not economic

Initial design parameters Nominal power output 10.0 MW Design wind velocity 13.0

m/s Tip speed ratio 7.7 Hub height 93.5 m Turbine diameter 141.0 m Design water depth 60.0 m Wind & waves ala Doggerbank (work in progress!)

NOWITECH 10 MW reference turbine

The NOWITECH 10 MW reference turbine introduces a new generator and support structure concept

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Courtesy AMSC

100 times the current density compared to copper

More than doubles the achievable magnetic field

Eliminates rotor losses

Operating at 20-50 K

New materials give new electromagnetic designs

Possible step-changing technology

Activity in new FP7 project application: InnWind

Superconducting generators reduce weight

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Optimization of the offshore grid► Inside and between wind farms► New market solutions are required► New technology (HVDC VSC, multi-

terminal, hybrid HVDC/HVAC, .. )► Protection, Fault handling, Operation,

Control, Cost, Security of Supply

0 5 10 15 20 25 30100

1020

1040

1060

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10100

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Number of nodes

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tions

33kV

+100 kV

Innovative DC grid solutions for offshore wind farms avoiding need for large sub-station

+100 kVConventional system

► It is costly and sometimes impossible to have maintenance staff visiting offshore turbines

► Remote presence: Remote inspection through

a small robot on a track in the nacelleequipped with camera / heat sensitive, various probes, microphone etc.

Remote maintenance through robotized maintenance actions

Remote presence reduce O&M costs

From Idea to Commercial Deployment

Prototype

Technology Focus

Cost Focus

Commercial and Market Focus

Model test

Concept

Large Parks

Pilot Park

2001

2005

2009

2014-16

Graphic is copy from Statoil presentation on HyWind at Wind Power R&D seminar; 20-21 January 2011, Trondheim, Norway

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Rounding up► Remarkable results are already achieved by industry and

R&D institutes on deep offshore wind technology► Technology still in an early phase – Big potential provided

technical development and bringing cost down► Research plays a significant role in providing new

knowledge as basis for industrial development and cost-effective offshore wind farms at deep sea

► Cooperation between research and industry is essential for ensuring relevance, quality and value creation

► Test and demonstration, also in large scale, is vital to bring research results into the market place

► Offshore wind is a multidisciplinary challenge – international collaboration is the answer!

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NOWITECH is a joint 40M€ research effort on offshore wind technology.

Integrated numerical design tools

New materials for blades and generators.

Novel substructures (bottom-fixed and floaters)

Grid connection and system integration

Operation and maintenance

Assessment of novel concepts

www.NOWITECH.no

We make it possible

Questions?