Presentation Re Power

REpower Offshore - Turbines and UK Market Norbert Giese – Business Unit Offshore

REpower Systems AG

10320

--Q1-2009GermanyOnshoreEllhöft / Westre100186M3

30km12-27.5mQ3-2008BelgiumOffshoreThornton Bank94.5305M6

--Q2-2008GermanyOnshoreBremerhaven11755M1

--Q4-2007GermanyOnshoreBüttel117105M2

--Q3-2007GermanyOnshoreBüttel117155M3

25km45mQ3-2007UKOffshoreBeatrice8955M1

--Q4-2006GermanyOnshoreCuxhaven117105M2

25km45mQ3-2006UKOffshoreBeatrice8955M1

--Q4-2004GermanyOnshoreBrunsbüttel12055M1

Distance

to Shore

Water

Depth

InstalledCountryOnshore

/Offshore

SiteHub

Height

(m)

Rated

Power

(MW)

TypeQty

1- PROJECT REFERENCE LIST

20 Turbines Installed, 8 Offshore

2 - REpower 5M

• Rated Power 5 MW

• Increased power generation

- Foundation, installation, system & O&M

economies of scale

• Modular drive train

- Based on successful REpower MD/MM

onshore turbines, operational since 1998

• Conservative design

• Focus on long term reliability with

redundancies & extended safety factors

- Twin bearing main shaft protects gearbox

- Gearbox designed to REpower guidelines

- Electrical ‘fail-safe’ single blade pitch with

- Tilted cone & pre-bent rotor blades

- Power electronics in the nacelle

• Exceptionally service friendly

Designed Specifically for Offshore

M

HubRotor BearingsGearbox Onboard CraneConverter

Transformer Generator Yaw System

Modular Drive Train – The Nacelle

Hub Rotor Bearings

Gearbox

Onboard Crane

Converter

Transformer

Generator

Yaw System

Modular Drive Train – The Nacelle

Minimises loads on gearbox, which as a result only transfers torque

Hollow main shaft for additional stiffness

BenefitCARBTM Toroidal-roller bearing

Can cope with:

- tangential deviation

(permanent 0.5°, temporary max. 1°)

- axial displacement

(out of centre position up to 10% of the bearing width)

Best technical solution for a non locating bearing

Same concept for the generator

Easy disassembly due to flange connections

Load-free pivoting of rotor through:

- CARBTM bearing (non locating bearing)

- Spherical roller bearing (locating bearing)

BenefitTwo bearings on the main shaft

Double Bearing Main Shaft

Excellent yield & power

quality. Low losses

Variable speed avoids

surges & peak loads

Voltage and frequency

matched to grid

Double-fed synchronous,

6 pole continuous

Generous, conservative,

robust design

BenefitsGenerator

Direct lubrication of all

bearings and gears with

oil filtration down to 6µm

2-step helical planetary

gear with one spur

Extended safety factors

BenefitsGearbox

Major Components

Options for different

outputs

- 20 or 33 kV

Cast resin and dry

type transformers

- reduced weight &

fire risk

Cooled by dual fan air

/ air heat exchanger

BenefitsTransformer

Water cooled

4 modules in 2 groups

- Redundant system

- Continued operation

in case one module

fails

Limited to 20% of

output so low losses

and high efficiency

BenefitsConverter

Extended safety factors and redundant features with offshore in mind

Pre-bent to avoid tower

contact

Lightning protection

Glass-fibre reinforced

plastic (GRP) / polyester

with epoxy resin

- Mass - 17.8 tonnes

- Deformation to 17m

Hydraulic holding brakes

- Relieves drives while

idle and removes loads

from yaw gears

BenefitsBlades

Controlled by 8 electrical

yaw drives

External 4 point bearing

with multi disc brakes

BenefitsYaw System

Major Components

No hydraulic fluid

leakage

Individually adjustable

electrical pitch drives

for reliability

Failsafe pitch stop

through battery buffer

Service access from

inside the nacelle

Stiff but compact

design (transport)

Blade attached to

external bearing ring

for ease of

maintenance

BenefitsHub

17 m

Extended safety factors and redundant features with offshore in mind

Service Friendly Design

• Spacious nacelle

• Survival room in tower

• Flange mounted drive train

- Easy disassembly / assembly

• Service crane, lifts up to 3.5

tonnes, designed for:

- Maintenance

- Pitch and yaw drives

- Converter

- Blade inspection

• Heli hoist

Designed for Offshore Servicing

Offshore Service

Delivery of large componentsAvailability of consumables and

trained personnel

Repair or replacement of all components incl. serial defects

Visual and functional testing Availability of service vessels,

crane barges, helicopters etc.

Online rectificationEnsures normal conditionTransport from harbour to WTG

of personnel, spare parts,

consumables, tools etc.

Availability of spare parts, trained personnel

Various inspections (bolt

connections, filters etc.

Maintenance RepairOffshore Logistics

Helicopter Rescue

NO RESTRICTIVE REQUIREMENTS FOR ROTOR TO BE LOCKED IN ‘Y’POSITION OR NACELLE TO BE

90deg TO WIND

1. Blades

pitched to

idle, yaw

locked

2. Distance

visual lock

using

paintwork

4. Hover

visual lock

using ball

markers

3. Approach

90 deg to

nacelle or

from behind

Beatrice Offshore Demonstrator Project

● Talisman Energy & SSE

- 2x 5M

- Installed 2006 & 2007

● Water depth: 45 m

● Distance to shore: 25 km

BEATRICE PROJECT

3 - Beatrice Offshore Demonstrator Project

195m

45m

17m

70m

sea level

For the first time in the world

the use of a jacket structure

for an offshore turbine

Beatrice Project – Jacket Foundation Manufacturing

● Quattropod Jacket

- base 19 m x 19 m

- height 62 m

- mass 730 tonnes

Beatrice Project – Jacket Foundation Transport

● Jacket placement

- Total lift of 730 tonnes

● Piling and swaging - four

piles per jacket

- 1.8 m diameter each

- 120 tonnes weight each

- 34 m penetration

Beatrice Project – Jacket Foundation Installation

Beatrice Project – Jacket Foundation Installation

Beatrice Project - Onshore Installation at Nigg Yard

Beatrice Project – Turbine Sail Out

For the first time in the world a fully pre-

assembled wind turbine installed offshore

- Total lift of 655 tonnes

Beatrice Project - Turbine Installation on Jacket

Soft landing device for safe installation


Beatrice Project - Completed

The Beatrice Windfarm Demonstrator. Part of the DOWNVInD Project of the European Commsission

5 - Thorntonbank Project

● Customer: C-Power

- 6x 5M (30 MW) for Phase 1

- Installed 2008

- Total planned capacity: 300 MW

● Water depth: 12 - 27,5 m

● Distance to shore: 30 km

THORNTON BANK PROJECT

Thorntonbank Project

Thorntonbank Project - Turbines Installed

6 – UK OFFSHORE MARKET

UK Offshore Market 2000-2009

TotalTBCREpowerVestasSiemensMW

TotalTBCREpowerVestasSiemensMW

25,820Allocated Sites MW (Total Potential)

ROUND 3

6,438Allocated Sites MW (Total Potential)

SCOTTISH ROUND

6,1804,77003001,790Total

5,8164,770001,726Approved

3640030064Constructing

00000Operational

ROUND 2

1,0669010484482Total

9090000Approved

37800180198Constructing

598010304284Operational

ROUND 1

Siemens

Vestas

TBCREpower

Siemens

Vestas

TBC

ShallowWaterCloseTo

Shore

Deep Water Far From Shore

Target UK Offshore Projects (2010-2013)

Planning2013900150npowerTriton Knoll

4,860830

Planning201337563CentricaRace Bank

Planning20131,000167Warwick EnergyDudgeon

Planning201218030DONGWesternmost Rough

Approved2011750125npowerGwynt y Mor

Submitted201137563CentricaDocking Shoal

Approved2011750125DONG/EON/MasdarLondon Array

Submitted201123038E.ONHumber Gateway

Planning20116010VattenfallAberdeen Offshore

Approved20109030EDFTeeside/Redcar

Approved201015030VattenfallOrmonde

ConsentBuild

Start

MWWTGsOwner /

Operator

Wind farm

Scottish Round (2014 onwards)

6,438

415Fred OlsenForth Array10

360MainstreamNeart na Gaoithe9

700Airtricity / Fluor LtdBell Rock8

905Npower / SeaEnergyInch Cape7

920Airtricity / SeaEnergyBeatrice6

1,500Scottish PowerArgyll Array5

680AirtricityIslay4

378AirtricityKintyre3

280DongWigtown Bay2

300E.ONSolway Firth1

Size

(MW)

CompanySite NameID

UK Round 3 (2015 onwards)

8,460

1,240Irish Sea9

1,500Bristol Channel8

500West Isle of Wight7

500Hastings6

1,240Norfolk5

1,240Hornsea4

1,240Dogger Bank3

500Firth of Forth2

500Moray Firth1

Size

(MW)

Site NameID

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Presentation Re Power

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