GE Wind Energy 3.6s Offshore

Martin BerkenkampJune 2003

GE Company Proprietary

ZondTehachapi, USA

EnronSpain

AerpacThe Netherlands

TackeGermany

R&D, GEPSNew York

GEPS EngGreenville, SCGEPS EngGreenville, SC

Blade FacilityPensacola, USA

Blade FacilityPensacola, USA

Research/SupplyShanghai, China

Research/SupplyShanghai, China

Research CenterBanglore, India

Research CenterBanglore, India

GE Wind Energy Locations

Doubled Engineering Capacity in Past 12 Months GE Company Proprietary

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LeistungRotor

TurmhöheInstalliert

150 kW25 mtr.30 mtr.1985

500 kW37 mtr.40 mtr.

1992

300 kW37 mtr.40 mtr.1994

600 kW60 mtr.43 mtr.1995

1.500 kW65 mtr.67 mtr.

1996

1.500 kW65 mtr.80 mtr.1997

1.500 kW70,5 mtr.100 mtr.

1997

1.500 kW 900 kW77 55 mtr mtr. .100 mtr mtr. .

2000 2000

80 kW21 mtr.40 mtr.1992

250 kW25 mtr.55 mtr.1992

60 kW14 mtr.30 mtr.1991

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20

30

40

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60

70

80

90

100

110

120

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140

LeistungRotor

TurmhöheInstalliert

150 kW25 mtr.30 mtr.1985

500 kW37 mtr.40 mtr.

1992

300 kW37 mtr.40 mtr.1994

600 kW60 mtr.43 mtr.1995

1.500 kW65 mtr.67 mtr.

1996

1.500 kW65 mtr.80 mtr.1997

1.500 kW70,5 mtr.100 mtr.

1997

1.500 kW77 mtr mtr. .100 60 mtr. .

2000

80 kW21 mtr.40 mtr.1992

250 kW25 mtr.55 mtr.1992

60 kW14 mtr.30 mtr.1991

3.600 kW104 mtr.100 mtr.

2002

3.600 kW104 mtr.100 mtr.

2002

Track Record in Wind Turbine Design

GE Wind Historic Background

Introduction of VariableSpeed Technology

1996

First OffshoreProject

2000

GE Company Proprietary

Completion of State-of-the-Art Product Line

GE Wind Development of Variable Speed Machines

GE 1.5s/sl GE 900s GE 3.6s offshore GE 2.x

1996 2000 2002 2003

GE Company Proprietary

COE/LogisticalConstraints

Logistical Constraints

Offshore Site Constraints/COE

Products for all Applications

GE Wind Application range of Product Family

GE 1.5s/sl GE 900s GE 3.6s offshore GE 2.x

GE Company Proprietary

Project Utgrunden, Sweden

Installed: 2000/2001

Turbines: 7 x GE 1.5s

Yearly Production: 4.5 GWh / turbine

Utgrunden: Our Test Case for Offshore Wind

GE Wind Offshore Experience

GE Company Proprietary

Main Data:

Tower options: optional

Rotor diameter: 104 m

Generator capacity: 3,600 kw

Control: Pitch

Rotor speed: 8,5 – 15,5 Rpm

Swept area: 8,495 sqm

Weight of the Nacelle 280 tons incl. Rotor

The 3.6: Our Offshore Product

GE Wind – 3.6s Offshore

GE Company Proprietary

Proven elements

• concept analogous to more than 1.400 GE 1.5 since 1996

• separated drive train• variable-speed,

variable-pitch• double-fed asynchronous

generator• frequency converter• recommended suppliers

New elements

• experience GE 1.5s

offshore at Utgrunden• annual maintenance• over-specified design• crane system• E-container at nacelle• 3.3 kV generator • external heat exchanger• helicopter hoisting

platform (optional)

GE Wind – 3.6s offshore

“Low Risk” Approach for New PlatformGE Company Proprietary

High Performanceairfoils

ElectricalPitchSystem

Yaw SystemWith Actice Pads

Container withConverter, Switchgear& Transformer

RotorLock

Gearbox2 planetary1 parallel stage

Doubly FedInductionGenerator

InternalCranesystem

“Low Risk” Approach for New Platform

GE Wind – 3.6s offshore

GE Company Proprietary

Length: 50,5 m

Material: glas-epoxy

Profile: GEWE - design

Shape: pre-bended

Rotor Blades

Blades optimised for Low-Loads & High Energy YieldGE Company Proprietary

Power Curve Verification Exceeding Expectations

3.6 Performance Validation – Power Curve

GE Company Proprietary

Sound Power Level and tonality for wind speeds from 6 to 10 m/s at 10 m height

wind speed in 10 m height [m/s] 6 7 8 9 10sound power level [dB] 103,2 106,2 107,4 107,5 107,1tonalitiy, Δ Lk [dB] -5,50 -12,61 -15,29 -7,04 -5,95

tonal audibility, Δ LA,k [dB] -3,49 -10,60 -13,29 -5,03 -3,94

No tonality measured acc. IEC

New Low Noise Airfoils Successfully Tested

GE 3.6 Performance Validation - Noise

GE Company Proprietary

New Service Procedures Tested

GE 3.6 Performance Validation - Service

GE Company Proprietary

Focus on Extending the Platform Capabilities

3.6 Multi Generation Product Plan

2001 2002 2003 2004 2005 2006 2007

ProtoGE 3.6Barrax

2002

OffshoreDemo

Arklow2003

GE 3.2Dunkirque

2003

OffshoreSerial

Production

OffshoreCape Cod

US 60HzPrototype

GE Company Proprietary

Arklow Bank Phase 1: Offshore wind farm

Arklow Bank Phase 1

Co-Development project of

Airtricity & GE Wind Energy

7 units GE 3.6s offshore = 25.2 MW

Turn-key project incl. 38 kV grid connection

Start of installation: July 2003

Commissioning: Sept. 2003

Total capacity ofArklow Bank: approx. 400 MW

Demonstrating Capabilities:GE 3.6s Offshore & GE Project Development GE Company Proprietary

Arklow Bank Phase 1: Site data

Arklow site

Annual average wind speed: approx. 8.5 m/s @ 73.5 m

Distance to shore: approx. 10 km

Water depth: 4.2 – 6.4 m (MSL)

Tidal range: 2.8 m

Design wave height: approx. 10 m

Currents: up to 5 knots !

Soil: dense sand & gravel

=> Heavy Scour protection

MonopileDiameter: 5.1 mPenetration: 30 mWeight: approx. 270 t

Largest Offshore Turbine so far setting new standardsGE Company Proprietary

Arklow Bank Phase 1: Grid Connection

Turn-Key Delivery Through GE Different BusinessesGE Company Proprietary

Arklow Phase 1: Supply Chain

                                                                                                                                                                                                         

Salzbergen

Windfarm Arklow

Rosslare Port

Brake

Blades from Brazil

Towers and Monopile

Global Product and Global Project LogisticsGE Company Proprietary

Vielen Dank!

GE Company Proprietary