Gamesa Eólica New 2 MW WT: Gamesa G87-2.0 MW & G90-2.0 MW

February 2006

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Gamesa Profile.1

Gamesa Eolica product development2

R&D Development.I

Modular Vertical Integration.II

Platform approach as the basis for Product Portfolio developmentIII

IV Gamesa G87-2.0 MW & Gamesa G90-2.0 MW Technologies

Agenda

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RenewableEnergies

Aeronautics

Wind TurbineProduction

Advanced Services

Solar Installations

-Promotion

-Sell

-Prediction

-Agent

-Design

-Production

-Components

-O&M

-Turn Key

-Installation

-Civil work

-O&M

-Thermal

-Photovoltaic

Development and sell of

Wind Farms

1. Gamesa ProfileBusiness Areas.

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Gamesa operates in the wind energy sector through three business units, leaders of their respective areas of promotion, manufacturing and services

Advanced Services

Depending on the local developers demand, Gamesa is able to provide a complete solution or a partial solution

Control %

Business Unit

Activity

100%100%100%

Wind Turbine ProductionPromotion of Wind Farms

Gamesa Energía Gamesa Eólica Gamesa Servicios

Resource Evaluation

MicrosittingFinancing Structure

WTG Design & Manufacturing

Turn-key contracts

Operation & Maintenance

Transfer to 3rdComponents

Design&Manufacturing

1. Gamesa Profile. Renewable Energies AreasBusiness Units.

Renewable Energies Areas

5 │▼

Major investments in R&D allow Gamesa Eólica to guarantee its state-of-the-art technology in the long-term

5 R&D centers in Pamplona, Bilbao and Denmark.

247 employees.

60.9 mill. € invested in 2004, equivalent to 3.4% of the group turnover.

Gamesa was ranked 5th in Spain by R&D investment. Gamesa is among the top 200

European companies investing in R&D in 2004.

35 patents granted and 17 requested (by end of 2004).

In 2004 Gamesa collaborated with 49 scientists and technologists in R&D projects.

Gamesa UPB: Highly Accelerated Life Testing center.

2. Gamesa Eólica product developmentR&D Development.

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Gamesa Eólica transfers the maximal quality and cost advantages to its customers through this strategy

Gamesa Eólica considers the tailor-made development of the major components as a necessary element for the excellence in the design and production of the wind turbines

Blades Control Software

Gearboxes Generators Power Electronics

Towers

Design

Manufacturing

O&M

% of WTG Cost 20% 5% 15% 10% 5% 20%

100% In House 100% In House

100% In House

50% In House 60% In House

50% In House 60% In House100% In House

100% In House 100% In House 100% In House 100% In House 100% In House 100% In House

100% In House 50% In House

50% In House

2. Gamesa Eólica product developmentModular Vertical Integration.

30% In House

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Number of Manufacturing Plants

Constructed Surface Total Surface

23 169.350 m2 552.940 m2

Gamesa Eólica counts on a large & geographically distributed industrial capacity to reduce logistics costs and enhance local value

2. Gamesa Eólica product developmentModular Vertical Integration. Annual Production Capacity.

Towers Blades Root joints Blade Moulds Generators & Converters

Gearboxes

2.310 MW 275 u. 2.416 MW 4.400 u. 8 G8X 1.200 MW 1.465 MW

6

Manufacturing Plants

2

Manufacturing Plants

6

Manufacturing Plants

1

Manufacturing Plant

1

Manufacturing Plant

3

Manufacturing Plants

4

Manufacturing Plants

Nacelle

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PLATFORM RATED POWER PRODUCTS CHARACTERISTICS

Gamesa G5X – 850 KW 850 kW G52, G58Experience and

Profitability

Gamesa G8X – 2.0 MW 2 MW G80, G83, G87, G90Versatility and

Production

2. Gamesa Eólica product developmentProduct Portfolio. Platform approach as the basis for Product development

Modular strategy designing horizontal components for our product platforms which provide improved quality control, greater efficiency and flexibility

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MODEL IEC DIBTRATED

POWER

GRID

CODE

TOWER

HEIGHTSNRSTM 50Hz 60Hz

G52

G58

G80

G83

G87

G90

IA

IIIB

IA

IIA

IIA

IIIA

WZII

WZII

WZII-III

WZII

WZII

850kW

850kW

2.000kW

2.000kW

2.000kW

2.000kW

44,55,60,65,74

44,55,60,65,71

60,67,78,100

67,78

67,78,100

67,78,100

Gam

esa

G5X

-850

kW

Gam

esa

G8X

-2.0

MW

2. Gamesa Eólica product developmentProduct Portfolio. Models and versions.

Complete range of the multi-MW market through models with rotors adapted to site conditions to maximize Value and Profitability

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2. Gamesa Eólica product developmentProduct Portfolio. G8X Protopypes roadmap.

2002 200620042003 2005

Jun 2005

G90 Protopype

Almendarache (SPAIN)

May 2004

G87 Protopype

Lubián (SPAIN)

Sept 2002

G80 Protopype

Aguallal (SPAIN)

Sept 2003

G83

Protopype

Cinseiro (SPAIN)

Nov 2003

G80 60Hz Protopype

Koshizaki (Japan)

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Model GAMESA G87

Rotor diameter 87m

Rated power 2.000 kW

Technology Pitch

Dobly fed generator

3 stages gearbox

Tower Heigh (m) 67, 78, 100

IEC Class IIA

Maximizing cost efficiency per kwh by maximizing

production in medium wind speeds.

42,5m blade using state-of-the-art manufacturing

technology based on glass fibre, carbon fibre and

pre-peg method for a lighter rotor design.

Reduced sound level and Gamesa NRSTM for

maximizing production while complying to specific

noise restrictions.

Grid connection technology that assures full

national grid codes compliance.

Gamesa SMP for predictive maintenance and

Gamesa SGIPE for remote operation.

Power density of 336 kW/m2

230 WTG installed by Dec. 2005.

2. Gamesa Eólica product developmentProduct Portfolio. Gamesa G87-2.0 MW.

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Model GAMESA G90

Rotor diameter 90m

Rated power 2,000 kW

Technology Pitch

Doubly fed generator

3 stages gearbox

Tower heigh (m) 67, 78, 100

IEC Class IIIA

Maximizing cost efficiency per kwh by maximizing

production in low wind speeds.

44m blade using state-of-the-art manufacturing

technology based on glass fibre, carbon fibre and

pre-peg method for a lighter rotor design.

Reduced sound level and Gamesa NRSTM for

maximizing production while complying to specific

noise restrictions.

Grid connection technology that assures full

national grid codes compliance.

Gamesa SMP for the predictive maintenance and

Gamesa SGIPE for the remote control.

Power density of 314 kW/m2

2. Gamesa Eólica product developmentProduct Portfolio. Gamesa G90-2.0 MW.

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5 5,5 6 6,5 7 7,5 8 8,5 9

Gamesa G80-2.0 MW 100% 100% 100% 100% 100% 100% 100% 100% 100%

Gamesa G87-2.0 MW 115% 114% 113% 112% 111% 110% 109% 108%

Gamesa G90-2.0 MW 121% 120% 118% 117% 115% 114%

Annual Energy Production (in comparison to Gamesa G80)

Mean Wind Speed (m/s)Model

2. Gamesa Eólica product developmentGamesa G87-2.0 MW and Gamesa G90-2.0 MW. AEP

Enhanced production for any wind resource through Gamesa G87 and Gamesa G90

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2. Gamesa Eólica product developmentGamesa G87-2.0 MW and Gamesa G90-2.0 MW. WT Components

GEARBOXINTERCOOLERS

CRANE

TRANSFORMER

BEARING HOUSES

MAIN SHAFT

MAIN FRAME

COUPLINGGENERATOR

DISC BRAKE

A modular drive train for a reliable torque transmission to gearbox

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SUBSYSTEMS MAIN FEATURES

ENVIRONMENTAL

CONDITIONS

Wind turbines designed for ambient temperatures ranging from –30º C to

+40º C , with versions for corrosive or sandy enviroments.

MECHANICAL SYSTEMS

&

AERODYNAMICS

Modular 3-stage gearbox

Main and secondary brake

Active Yaw system

Carbon and glass fiber reinforced composite blades

ELECTRICAL SYSTEMS Doubly-Fed variable speed generator

Built-in transformer

CONTROL & INFORMATION

SYSTEMS

Pitch regulated and variable speed control

SCADA: Gamesa SGIPE

CMS: Gamesa SMP

GRID CONNECTION

Low Voltage Ride Through: Active Crowbar and Oversized Converter

Active and Reactive power regulation: modules integrated in Gamesa

SGIPE

Frequency regulation: Embedded algorithm in PLC

2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies.

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2. Gamesa Eólica product developmentG87-2.0 MW and G90-2.0 MW Technologies. Environmental conditions I.

LOW TEMPERATURE

[-30º, +30º]

STANDARD

[-20º, +30º]

HIGH TEMPERATURE

[-20º, +40º]

Close nacelle cover Close nacelle cover

Air in lets and out lets, for the cooling system

Air outlets for hot air from generator, converter and transformer

Air heater to the main components of the nacelle

Electric cabinets with heating resistances included.

Inner air for gearbox, converter, hidraulic unit and generator.

Direct inlet for gearbox

Intercooler for the hydraulic unit

Temperature Versions

Na

ce

lle

c

ha

ng

es

Co

mp

on

en

ts

ch

an

ge

s

Nacelle tune to match environmental conditions

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Aerodynamics Systems I.

G90: 43,8 m.G90: 43,8 m.

G80: 39 m.G80: 39 m.

G87: 42,3 m.G87: 42,3 m.G83: 40,5 m.G83: 40,5 m.

G8X blades

6.500 Kg

7.300 Kg

6.150 Kg

5.800 Kg

Carbon fiber is used for obtaining more stiffness with lighter weights

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Aerodynamics Systems II.

State-of-the-art manufacturing process. Blades made of composite with glass and

carbon fiber reinforcement.

Carbon fiber is used for obtaining more stiffness with lighter weights.

Pre-preg manufacturing method

Lightining protection system

Delft University airfoils

G8X blades characteristics

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Mechanical systems I.

Improvements in Gamesa Active Yaw System

The yaw is active with hydraulic brake clamp that can be

regulated gradually.

The system is composed of 5 clamps avoid fatigues and

failures in the Yaw system.

4 electrical motors operated by WT controller based on

information received from the anemometers mounted on top of

the nacelle

Subjected to High Accelerated Life Testing at Gamesa UPB

Gamesa Active Yaw provides maximum adaptability to complex terrain

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Mechanical systems II.

Front Frame

One-piece casted part

Larger yaw-gears to improve yaw control

Approx. weight: 10,600 kg.

Subjected to High Accelerated Life Testing at Gamesa UPB

The one piece casted part front frame assures unique adecuation to the original design and

resistance to (i) support the weight of the nacelle and (ii) transmit the loads to the tower

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Mechanical systems III.

Gamesa UPB

HALT of a Front Frame in the Gamesa UPB facilities

High Accelerated Life Testing

facilities for frames and yaw system.

Frames and Yaw systems are

subjected to cycles of extreme loads

and fatigue.

Results obtained help to assure

high quality standards as well as

giving feedback for design

improvements

The life testing facility assures critical mechanical components reliability in design process

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Mechanical systems IV.

Designed for the load envelop of the whole platform: 2MW

DFM IEC IA/IIA/IIIA and DIBtII/III

3 combined steps, one planetary and two parallel helicoidall

Enjoys a lubrication system with an associated filtering

system.

Subjected to fatigue testing

New Gearbox design

Control sensors and Gamesa SMP accelerometers for predictive maintenance

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Electrical systems I.

Generator

Synchronous behaviour

4 poles Doubly-fed induction generation

Variable Speed through rotor currents control

Active and Reactive power control through control of rotor

current amplitude and phase

DF maximizes production and minimizes loads and noise levels in the most efficient way

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Electrical systems II.

Transformer

Three-phase, dry encapsulated type.

Output Voltage from 6,6 to 34,5 kV

Mounted inside the nacelle in G8X for reducing energy losses

and visual impact

LV protections

Fuses in stator and rotor bushbar

Neutral current relay

Temperature sensors

MV protections

MV switchgear

Spark sensor

MV Surge Arrester

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Control systems I.

Gamesa SGIPE

SCADA designed and developed by GEOL

Integrates WT management, weather masts and the electrical

substations

Graphic interface and Web access

Optional modules: Active power, Reactive power regulation,

Gamesa NRSTM , Wake effect control system and Shadow

control.

Modules for active and reactive power regulation, noise levels emission, wake effect control and

shadow control

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Control systems II.

Certified by Germanischer Lloyd

Monitors critical parts of the WTG, process the data and gives

information through SGIPE

Predictive maintenance core technology

Up to 8 accelerometers simultaneous management

Gamesa SMP

Serial CMS to anticipate to potential failures

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Control systems III.

Noise reduction system. Interchangeable control version depending on the noise emission

scheduling

Assures maximum energy production complying with local regulations

Several programmable parameters: date, day&night, season, wind direction, etc.

Gamesa NRSTM

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ADVANCED VERSION

Low Voltage Ride ThroughFullfilment of main grid codes (REE, E.ON, FERC and others) for

simmetrical and unsimmetrical faults

Reactive regulation0,95 lead – 0,95 lag in output terminals of the generator for all the power

range.

Active Regulation Response time: 5% Pr/s

Frequency Regulation

f<101% 100% Pr

f>103% 65% Pr

Response time: 5% Pr/s

2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Grid connection I.

Performance Summary

P

f

29 │▼

2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Grid connection II.

Low Voltage Ride Through

Active Crowbar

Oversized Converter

Torque limiter

Fullfilment of the low voltage ride-through requirements defined in the FERC, EON, Spanish, Ireland & Others Regulations

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2. Gamesa Eólica product development G87-2.0 MW and G90-2.0 MW Technologies. Grid connection III.

Reactive Power

Reactive Power (cos PHI 0.95 as an option in 690V)

~

PLC

. . . .

Power measurement

cos P (MW)

f (Hz)~

PLC

~

PLC

~

PLC

SGIPESET controlP, cos , f

for automatic control

P, Q

setpointRTU RTUDispatching

Electrical Utility

NetworkM.V.

GAMESA SGIPE manages wtgs and SET equipment reactive output through connection to SET

31 │▼

G87-2.0 MW and G90-2.0 MW Conclusions

G80

G83

G87

G90

IA

IIA

IIA

IIIA

WZII-III

WZII

WZII

2.000kW

2.000kW

2.000kW

2.000kW

60,67,78,100

67,78

67,78,100

67,78,100

Gamesa G87 & Gamesa G90 complete the Gamesa multi MW portfolio for medium and low winds

MODEL IEC DIBT RATED

POWER

GRID

CODE

TOWER

HEIGHTS

NRSTM

50

Hz

60

Hz

Gamesa G87 & Gamesa G90 provide the most efficient cost per kwh through the use of

technologies to maximize production

THANK YOU VERY MUCH FOR YOUR ATTENTION