JAVIER CALLÉN / Project Manager+34 636 66 71 75

jcallen@nabrawind.com

NABRAJOINT®: THE SOLUTION FOR XXL BLADES SEGMENTATION

Wind Turbine Blade Manufacture 2017DüssseldorfDecember 14th, 2017PPT-0721 Rev. A

2

CONTENTS

1. Company Introduction• History• Team

2. XXL Blades Challenges• Market Evolution• Modular Blade Solution• Logistic Considerations• Logistic Model Analysis

3. NABRAJOINT®

• Product Description• Certification Strategy• Project Overview• Conclusions

3

1 COMPANY INTRODUCTIONHistory

2015 2016 2017 20182014

Nabrawind Technologies Founded

Nabrawind Founded

SHAREHOLDERS

Nabrawind

Barinaga y Alberdi

SODENA

Technology Projects Development

Public Funding

CommercialPreserialsPrototypes

NABRAWIND TECHNOLOGIESAdvanced Wind Technologies

Modular Blade Joint

Self Erected Tower

Drastic Cost Reduction

Modularity Proven Technologies

1st DesignIP Development & Protection

4

0

5

10

15

20

25

30

35

WindTurbineProjects

WindBladeProjects BladeMouldProjects

InventedPatents

Units

NBTECH BACKGROUND

Pamplona (Spain) HEADQUARTER

NAWIND

Long Experienced Team

Wind Environment Headquarters

1 COMPANY INTRODUCTIONTeam

5

2 XXL BLADES CHALLENGESMarket Evolution

Source: www.ssptech.com Source: ALE Heavylift

6

Source: NABRAWIND

Source: NABRAWIND

XXL BLADES CHALLENGESModular Blade Solution2

7

STD BladeSegmented Blade

Blade Cost

Blade Length

Blade Cost

Blade Length

60 m 70 m

Ex-works

Full Cost

FEASIBLE?Transport & Assembly

Cost

XXL BLADES CHALLENGESLogistic Considerations2

8

Modular

Standard

Factory to Port Port to Port Port to SiteSite

adaptation

XXL BLADES CHALLENGESLogistic Model Analysis2

9

3 NABRAJOINT®

Product Description

10

• MBJ Details. General view

• Single element detail

XPACER

3 NABRAJOINT®

Product Description

11

NABRAJOINT®

Product Description3

12

3 NABRAJOINT®

Product Description Good Poor

Modular Blade Joints Alternatives

Bonded T-Bolt Double Fitting Bath Fitting

Strength / bolt sizing

Mass & Cost

Assembly on Site

Maintenance

Reliability

Source: MAKE Consulting

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0%

20%

40%

60%

80%

100%

120%

140%

T-bolts Inserts Nabrajoint®

LCC/€

3 NABRAJOINT®

Product Description

0% 10% 20% 30% 40% 50% 60% 70% 80% 90%

100%

0% 25% 50% 75% 100%

Dim./Max.Chord(%

)

Adim.Length(%)

BladeGeometry

Thickness

Chord

-100%

-80%

-60%

-40%

-20%

0%

20%

40%

60%

80%

100%

0% 20% 40% 60% 80% 100%

M/M

flapm

ax(%

)

Adim.Length(%)

BladeLoads

Adim.Mflap

Adim.Medge

0%

20%

40%

60%

80%

100%

120%

0% 25% 50% 75% 100%

Adim.S

parC

apLoad(%)

Adim.Length(%)

SparCapUnitaryLoad

Adim.SparCapLoad(M/t)

LCC: Load Carrying Capacity (kN/mm)LPE: Max. Load per Element (kN/mm)

0%

20%

40%

60%

80%

100%

120%

0% 25% 50% 75% 100%

Adim.S

parC

apLoadFlow

(%)

Adim.Length(%)

SparCapLoadFlow

Adim.SparCapLoadFlow(M/t.c)

100%

102%

104%

106%

108%

110%

112%

114%

116%

0% 25% 50% 75% 100%

Adim.C

ost(%)

Adim.Length(%)

JointModuleCost

LPE@BladeRoot

LPE@70%Blade

LPE@50%Blade

0%

20%

40%

60%

80%

100%

120%

140%

T-bolts Inserts Nabrajoint®

LCC

0%

20%

40%

60%

80%

100%

120%

140%

160%

T-bolts Inserts Nabrajoint®

LCC/kg

14

3 NABRAJOINT®

Certification Strategy

FullScale

Substructure

Subcomponent

Material Characterization

15

3 NABRAJOINT®

Certification Strategy

FullScale

Substructure

Subcomponent

Material Characterization

16

3 NABRAJOINT®

Certification Strategy

FullScale

Substructure

Subcomponent

Material Characterization

17

3 NABRAJOINT®

Certification Strategy

FullScale

Substructure

Subcomponent

Material Characterization

18

MBJ TechnologyDevelopment

Modular BladePreserials

BladeCertificate

Blade JointCertificate

Design Certificate

F-S Static and Fatigue Tests

2016 2017 2018

Segment Tests

2019

3 NABRAJOINT®

Project Overview

19

3 NABRAJOINT®

Product Description

Cost-Effective SolutionSingle Bolt per Joint Element

Smart Intermediate Spacer

Minimum WeightUltra High Load Carrying Capacity

Hybrid Carbon-Glass Fiber Module

Fast AssemblySimple Segments Coordination

Automatic Pretension Tooling

Reliable SolutionRobust Assembly Process

Maintenance Free

First Class TechnologyDNV-GL Certification Process

Long Track Record Team

20

CONCLUSIONSReady for integration in commercial blade models

© Nabrawind Technologies 2017All rights reserved. No part of this publication can be reproduced, stored in a retrieval system or transmitted in any form or by any

means, electronic, mechanical or photocopying, recording, or otherwise without the prior permission of the publisher.

Thanks for your attention