IEC TS 62600-103:2024

Marine energy - Wave, tidal and other water current converters - Part 103: Guidelines for the early stage development of wave energy converters - Best practices and recommended procedures for the testing of pre-prototype devices

IEC TS 62600-103:2024 is available as IEC TS 62600-103:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC TS 62600-103:2024 is concerned with the sub-prototype scale development of wave energy converters (WECs). It includes wave tank test programmes, where wave conditions are controlled so they can be scheduled, and first sea trials, where sea states occur naturally and the programmes are adjusted and flexible to accommodate the conditions. Commercial-scale prototype tests are not covered in this document.
This document addresses:
- Planning an experimental programme, including a design statement, technical drawings, facility selection, site data and other inputs as specified in Clause 5.
- Device characterisation, including the physical device model, PTO components and mooring arrangements where appropriate.
- Environment characterisation, concerning either the tank testing facility or the sea deployment site, depending on the stage of development.
- Specification of specific test goals, including power conversion performance, device motions, device loads and device survival.
This document prescribes the minimum test programmes that form the basis of a structured technology development schedule. For each testing campaign, the prerequisites, goals and minimum test plans are specified. This document serves a wide audience of wave energy stakeholders, including device developers and their technical advisors; government agencies and funding councils; test centres and certification bodies; private investors; and environmental regulators and NGOs.

General Information

• Status: Published
• Publication Date: 02-Jul-2024
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 114 - Marine energy - Wave, tidal and other water current converters
• Drafting Committee: MT 62600-103 - TC 114/MT 62600-103
• Current Stage: PPUB - Publication issued
• Start Date: 17-May-2024
• Completion Date: 03-Jul-2024

Relations

• Revises: IEC TS 62600-103:2018 - Marine energy - Wave, tidal and other water current converters - Part 103: Guidelines for the early stage development of wave energy converters - Best practices and recommended procedures for the testing of pre-prototype devices
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC TS 62600-103 ®
Edition 2.0 2024-07
TECHNICAL
SPECIFICATION
Marine energy – Wave, tidal and other water current converters –
Part 103: Guidelines for the early stage development of wave energy converters –
Best practices and recommended procedures for the testing of pre-prototype
devices
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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further assistance, please contact the Customer Service
Centre: [e-mail].
IEC TS 62600-103 ®
Edition 2.0 2024-07
TECHNICAL
SPECIFICATION
Marine energy – Wave, tidal and other water current converters –

Part 103: Guidelines for the early stage development of wave energy converters –

Best practices and recommended procedures for the testing of pre-prototype

devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140  ISBN 978-2-8322-8963-1

– 2 – IEC TS 62600-103:2024 © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, symbols and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Symbols and abbreviated terms . 11
4 Staged development approach . 12
4.1 General . 12
4.2 Stage gates . 13
4.2.1 General . 13
4.2.2 Criteria . 13
4.3 Stage 1 . 14
4.3.1 Scope . 14
4.3.2 Stage Gate 1 . 15
4.4 Stage 2 . 15
4.4.1 Scope . 15
4.4.2 Stage Gate 2 . 16
4.5 Stage 3 . 16
4.5.1 Scope . 16
4.5.2 Stage Gate 3 . 17
5 Test planning . 17
5.1 WEC similitudes . 17
5.1.1 General . 17
5.1.2 Power conversion chain (PCC) similitude . 18
5.2 Design statement . 19
5.3 Facility selection and outline plan . 20
5.3.1 General . 20
5.3.2 Stages 1 and 2 . 20
5.3.3 Stage 3 . 21
5.4 Physical model considerations: Absorbing body and mooring system . 22
5.4.1 Stage 1 . 22
5.4.2 Stage 2 . 23
5.4.3 Stage 3 . 23
5.5 Physical model considerations: PTO and closed-loop control . 24
5.5.1 General . 24
5.5.2 PTO and control design considerations for Stages 1 and 2 . 24
5.5.3 PTO and control design considerations for Stage 3 . 25
5.5.4 PTO bench testing . 25
6 Reporting and presentation . 26
6.1 Reporting of test conditions and goals . 26
6.2 Presentation of results . 26
6.2.1 General . 26
6.2.2 Wave parameters . 26
6.2.3 Response amplitude operators (RAOs) curves . 27
6.2.4 Scatter diagrams . 27

6.2.5 Alternative iso-variable curves . 28
6.3 Presentation of performance indicators . 28
6.3.1 General . 28
6.3.2 Presentation of performance indicators in regular waves . 28
6.3.3 Presentation of performance indicators in irregular long-crested waves . 29
6.3.4 Presentation of performance indicators in irregular short-crested waves . 30
7 Testing environment characterisation . 30
7.1 General . 30
7.2 Wave tank characterisation (Stages 1 and 2) . 30
7.3 Trial site characterisation (Stage 3) . 32
7.4 Wave characterisation. 32
7.4.1 General . 32
7.4.2 Laboratory regular waves . 32
7.4.3 Laboratory irregular long-crested waves . 32
7.4.4 Laboratory irregular short-crested waves . 32
7.4.5 Sea trials . 32
8 Data acquisition and real-time control system . 33
8.1 Signal conditioning . 33
8.2 Sample rate . 34
8.3 Analogue to digital conversion and DAQ system . 34
8.4 Frequency response . 35
8.5 Data synchronisation . 35
8.6 Data recording . 35
8.7 Recording of supplementary test data . 35
8.8 Calibration factors . 36
8.9 Instrument response functions . 36
8.10 Health monitoring and verification of signals . 36
8.11 Special requirements for Stage 3 sea trials . 36
9 Power performance . 37
9.1 Testing goals . 37
9.2 WEC and mooring similitude . 37
9.3 Power conversion chain similitude . 38
9.3.1 General . 38
9.3.2 Stage 1 . 39
9.3.3 Stage 2 . 39
9.3.4 Stage 3 . 39
9.4 Physical measurements . 40
9.5 Calibration and setup . 40
9.6 Wave parameters . 41
9.6.1 Stages 1 and 2 . 41
9.6.2 Stage 3 . 42
9.7 Performance indicators . 42
10 Kinematics and dynamics in operational environments . 42
10.1 Testing goals . 42
10.2 Testing similitude . 43
10.3 Physical measurements . 44
10.4 Calibration and setup . 46
10.5 Wave parameters .
...

IEC TS 62600-103 ®
Edition 2.0 2024-07
REDLINE VERSION
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 103: Guidelines for the early stage development of wave energy converters –
Best practices and recommended procedures for the testing of pre-prototype
devices
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: [e-mail].
IEC TS 62600-103 ®
Edition 2.0 2024-07
REDLINE VERSION
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 103: Guidelines for the early stage development of wave energy converters –
Best practices and recommended procedures for the testing of pre-prototype
devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140 ISBN 978-2-8322-9373-7

– 2 – IEC TS 62600-103:2024 RLV © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, symbols and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Symbols and abbreviated terms . 11
4 Staged development approach . 12
4.1 General . 12
4.2 Stage gates . 14
4.2.1 General . 14
4.2.2 Criteria . 14
4.3 Stage 1 . 14
4.3.1 Scope . 14
4.3.2 Stage Gate 1 . 15
4.4 Stage 2 . 15
4.4.1 Scope . 15
4.4.2 Stage Gate 2 . 16
4.5 Stage 3 . 16
4.5.1 Scope . 16
4.5.2 Stage Gate 3 . 17
5 Test planning . 18
5.1 WEC similitudes . 18
5.1.1 General . 18
5.1.2 Power conversion chain (PCC) similitude . 18
5.2 Design statement . 19
5.3 Facility selection and outline plan . 20
5.3.1 General . 20
5.3.2 Stages 1 and 2 . 20
5.3.3 Stage 3 . 21
5.4 Physical model considerations: Absorbing body and mooring system . 23
5.4.1 Stage 1 . 23
5.4.2 Stage 2 . 23
5.4.3 Stage 3 . 23
5.5 Physical model considerations: PTO and closed-loop control . 24
5.5.1 General . 24
5.5.2 PTO and control design considerations for Stages 1 and 2 . 25
5.5.3 PTO and control design considerations for Stage 3 . 25
5.5.4 PTO bench testing . 25
6 Reporting and presentation . 26
6.1 Reporting of test conditions and goals . 26
6.2 Presentation of results . 27
6.2.1 General . 27
6.2.2 Wave parameters . 27
6.2.3 Response amplitude operators (RAOs) curves . 27
6.2.4 Scatter diagrams . 28

6.2.5 Alternative iso-variable curves . 28
6.3 Presentation of performance indicators . 29
6.3.1 General . 29
6.3.2 Presentation of performance indicators in regular waves . 29
6.3.3 Presentation of performance indicators in irregular long-crested waves . 29
6.3.4 Presentation of performance indicators in irregular short-crested waves . 30
7 Testing environment characterisation . 30
7.1 General . 30
7.2 Wave tank characterisation (Stages 1 and 2) . 31
7.3 Trial site characterisation (Stage 3) . 32
7.4 Wave characterisation. 32
7.4.1 General . 32
7.4.2 Laboratory regular waves . 32
7.4.3 Laboratory irregular long-crested waves . 32
7.4.4 Laboratory irregular short-crested waves . 33
7.4.5 Sea trials . 33
8 Data acquisition and real-time control system . 34
8.1 Signal conditioning . 34
8.2 Sample rate . 34
8.3 Analogue to digital conversion and DAQ system . 35
8.4 Frequency response . 35
8.5 Data synchronisation . 35
8.6 Data recording . 35
8.7 Recording of supplementary test data . 35
8.8 Calibration factors . 36
8.9 Instrument response functions . 36
8.10 Health monitoring and verification of signals . 36
8.11 Special data acquisition requirements for Stage 3 sea trials . 37
9 Power performance . 37
9.1 Testing goals . 37
9.2 WEC and mooring similitude . 38
9.3 Power conversion chain similitude . 39
9.3.1 General . 39
9.3.2 Stage 1 . 39
9.3.3 Stage 2 . 40
9.3.4 Stage 3 . 40
9.4 Signal Physical measurements . 40
9.5 Calibration and setup . 41
9.6 Wave parameters . 42
9.6.1 Stages 1 and 2 . 42
9.6.2 Stage 3 . 43
9.7 Performance indicators . 43
10 Kinematics and dynamics in operational environments . 43
10.1 Testing goals . 43
10.2 Testing similitude . 44
10.3 Signal Physical measurements . 45
10.4 Calibration and setup . 47
10.5 Wave parameters . 48
...