Electric vehicle wireless power transfer (WPT) systems - Part 1: General requirements

IEC 61980-1:2020 applies to the supply device for charging electric road vehicles using wireless methods at standard supply voltages per IEC 60038 up to 1 000 V AC and up to 1 500 V DC.
Electric road vehicles (EV) covers road vehicles, including plug-in hybrid road vehicles (PHEV) that derive all or part of their energy from on-board rechargeable energy storage systems (RESS).
This document also applies to wireless power transfer (WPT) equipment supplied from on-site storage systems (e.g. buffer batteries).
The aspects covered in this document include
• the characteristics and operating conditions of a supply device,
• the specification for required level of electrical safety of a supply device,
• communication between EV device and vehicle to enable and control WPT,
• efficiency, alignment and other activities to enable WPT, and
• specific EMC requirements for a supply device.
The following aspects are under consideration for future documents:
• requirements for MF-WPT systems supplying power to EVs in motion;
• requirements for bidirectional power transfer.
This document does not apply to:
• safety aspects related to maintenance,
• WPT system for trolley buses, rail vehicles and vehicles designed primarily for use off‑road, and
• any safety or EMC requirements for the vehicle side.
IEC 61980-1:2020 cancels and replaces the first edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the contents of IEC 61980-1:2015 have been re-organized so that this document is generally applicable to any WPT technologies;
b) technology specific requirements, mostly for MF-WPT in the main text of IEC 61980-1:2015, have been transferred to IEC 61980-2 and IEC 61980-3;
c) Annex A, Annex B and Annex C have been removed and contents of these annexes have been transferred to the relevant technology specific parts of the IEC 61980 series;
d) duplications and overlaps of the requirements within IEC 61980-1:2015 have been resolved;
e) terms and definitions which are specified in IEC 61851-1:2017 and are applicable for WPT system have been directly described in this document, with modification for some terms. The reference to IEC 61851-1 is withdrawn.

Systèmes de transfert de puissance sans fil (WPT) pour véhicules électriques - Partie 1: Exigences générales

L'IEC 61980-1:2020 s'applique aux dispositifs d'alimentation pour la charge des véhicules électriques routiers au moyen de technologies sans fil, à des tensions d'alimentation normalisées conformément à l'IEC 60038, jusqu'à des tensions alternatives de 1 000 V et des tensions continues de 1 500 V.
Les véhicules électriques (VE) routiers couvrent les véhicules routiers, y compris les véhicules routiers hybrides rechargeables (VEHR), qui tirent tout ou partie de leur énergie de systèmes rechargeables de stockage d'énergie (RESS) embarqués.
Le présent document s'applique également aux matériels de transfert de puissance sans fil (WPT) qui équipent les systèmes de stockage sur site (par exemple, batteries tampons).
Le présent document couvre les aspects suivants:
• les caractéristiques et conditions de fonctionnement d'un dispositif d'alimentation;
• la spécification concernant le niveau exigé de sécurité électrique d'un dispositif d'alimentation;
• la communication entre le dispositif du VE et le véhicule pour permettre et contrôler le WPT;
• le rendement, l'alignement et autres activités pour permettre le WPT; et
• les exigences de CEM spécifiques pour un dispositif d'alimentation.
Les aspects suivants sont à l'étude pour de futurs documents:
• les exigences concernant les systèmes MF-WPT qui alimentent les VE en mouvement;
• les exigences concernant le transfert de puissance bidirectionnel.
Le présent document ne s'applique pas:
• aux aspects de sécurité relatifs à la maintenance;
• aux systèmes WPT pour trolleybus, véhicules ferroviaires et véhicules conçus principalement pour une exploitation non routière;
• aux exigences de sécurité ou de CEM côté véhicule.
L'IEC 61980-1:2020 annule et remplace la première édition parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) le contenu de l'IEC 61980-1:2015 a été réorganisé de sorte que le présent document soit généralement applicable à toutes les technologies WPT;
b) les exigences spécifiques à la technologie, principalement pour le transfert de puissance sans fil par champ magnétique, dans le texte principal de l'IEC 61980-1:2015 ont été transférées dans l'IEC 61980-2 et l'IEC 61980-3;
c) les Annexes A, B et C ont été supprimées et le contenu de ces annexes a été transféré dans les parties spécifiques à la technologie pertinentes de la série IEC 61980;
d) les redondances et les chevauchements des exigences de l'IEC 61980-1:2015 ont été résolus;
e) les termes et définitions qui sont spécifiés dans l'IEC 61851-1:2017 et qui sont applicables au système WPT sont directement décrits dans le présent document, avec des modifications pour certains termes; la référence à l'IEC 61851-1 a été supprimée.

General Information

Status
Published
Publication Date
18-Nov-2020
Current Stage
PPUB - Publication issued
Completion Date
19-Nov-2020
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IEC 61980-1
Edition 2.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric vehicle wireless power transfer (WPT) systems –
Part 1: General requirements
Systèmes de transfert de puissance sans fil (WPT) Pour véhicules électriques –
Partie 1: Exigences générales
IEC 61980-1:2020-11(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61980-1
Edition 2.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric vehicle wireless power transfer (WPT) systems –
Part 1: General requirements
Systèmes de transfert de puissance sans fil (WPT) Pour véhicules électriques –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 43.120 ISBN 978-2-8322-9022-4

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61980-1:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions .................................................................................................... 11

4 Abbreviated terms ......................................................................................................... 17

5 General ......................................................................................................................... 17

6 Classification ................................................................................................................. 17

6.1 General ................................................................................................................. 17

6.2 Power transfer technology .................................................................................... 18

6.3 Environmental condition ........................................................................................ 18

6.4 Electric connection to supply network ................................................................... 18

6.5 Access .................................................................................................................. 18

6.6 Protection against electrical shock ........................................................................ 18

7 General supply device requirements .............................................................................. 18

7.1 General architecture ............................................................................................. 18

7.2 Power transfer requirements ................................................................................. 19

7.3 Efficiency .............................................................................................................. 19

7.4 Alignment ............................................................................................................. 19

7.5 Activities provided by WPT system ....................................................................... 19

8 Communication .............................................................................................................. 19

9 Power transfer interoperability ....................................................................................... 19

10 Protection against electric shock ................................................................................... 20

10.1 General requirements ........................................................................................... 20

10.2 Degrees of protection against access to hazardous-live-parts ............................... 20

10.3 Stored energy – Discharge of capacitors ............................................................... 20

10.3.1 Stored energy under abnormal or fault conditions .......................................... 20

10.3.2 Disconnection of plug and cable connected supply device ............................. 20

10.4 Fault protection ..................................................................................................... 20

10.5 Protective conductor dimensions ........................................................................... 21

10.6 Residual current protection device ........................................................................ 21

10.7 Telecommunication network .................................................................................. 22

11 Specific requirements for WPT systems ......................................................................... 22

11.1 General ................................................................................................................. 22

11.2 Touch current ....................................................................................................... 22

11.3 Insulation resistance ............................................................................................. 22

11.4 Dielectric withstand characteristic ......................................................................... 23

11.4.1 AC dielectric withstand .................................................................................. 23

11.4.2 Impulse dielectric withstand (1,2/50 μs) ......................................................... 23

11.5 Overcurrent protection and short circuit withstand ................................................. 24

11.5.1 General ......................................................................................................... 24

11.5.2 Maximum current for plug and cable connected supply device ....................... 24

11.6 Temperature rise and protection against thermal incidents .................................... 25

11.6.1 General ......................................................................................................... 25

11.6.2 Permissible surface temperature of accessible parts of the WPT system ....... 25

---------------------- Page: 4 ----------------------
IEC 61980-1:2020 © IEC 2020 – 3 –

11.6.3 Temperature limits for materials .................................................................... 25

11.6.4 Protection against burns from heating of foreign objects ................................ 26

11.7 Resistance to abnormal heat and fire due to internal electric effects ..................... 26

11.7.1 General ......................................................................................................... 26

11.7.2 Resistance of insulating materials to heat ...................................................... 26

11.7.3 Resistance of insulating materials to abnormal heat and fire due to

internal electric effects ................................................................................... 26

11.8 Protection from electromagnetic field .................................................................... 27

11.9 Emergency service disconnect (optional) .............................................................. 27

12 Power cable requirements ............................................................................................. 27

13 Constructional requirements .......................................................................................... 27

13.1 Supply device dimensions and installation requirements ....................................... 27

13.2 Connection of plug and cable connected supply device ......................................... 27

13.3 Earthing electrode and continuity .......................................................................... 27

13.4 IP degrees ............................................................................................................ 28

13.5 Breaking capacity of switching devices ................................................................. 28

13.5.1 Switch and switch-disconnector ..................................................................... 28

13.5.2 Contactor ....................................................................................................... 28

13.5.3 Circuit-breaker ............................................................................................... 28

13.5.4 Relays ........................................................................................................... 28

13.6 Clearance and creepage distances ....................................................................... 28

14 Strength of materials and parts ...................................................................................... 29

14.1 General ................................................................................................................. 29

14.2 Verification of mechanical strength for the enclosure of the supply device ............ 29

14.3 Resistance to corrosion ........................................................................................ 29

14.4 Properties of insulating materials .......................................................................... 30

14.4.1 Verification of thermal stability of enclosures ................................................. 30

14.4.2 Resistance to fire (glow wire) ......................................................................... 30

14.4.3 Ball pressure test ........................................................................................... 30

14.4.4 Resistance to tracking ................................................................................... 30

14.4.5 Resistance to ultraviolet radiation .................................................................. 30

15 Service and test conditions ............................................................................................ 30

15.1 General ................................................................................................................. 30

15.2 Environmental test ................................................................................................ 31

15.2.1 Ambient air temperature ................................................................................ 31

15.2.2 Ambient humidity ........................................................................................... 31

15.2.3 Dry heat ........................................................................................................ 32

15.3 Heat test under solar radiation .............................................................................. 32

16 Electromagnetic compatibility (EMC) ............................................................................. 32

16.1 Load and operating conditions .............................................................................. 32

16.1.1 Load conditions ............................................................................................. 32

16.1.2 Operating conditions ...................................................................................... 32

16.2 Immunity requirements .......................................................................................... 33

16.3 Disturbance requirements ..................................................................................... 35

16.3.1 General ......................................................................................................... 35

16.3.2 Limits and test conditions for disturbances in the low frequency (LF)

range ............................................................................................................. 36

16.3.3 Limits and test conditions for disturbances in the radio frequency (RF)

range ............................................................................................................. 36

---------------------- Page: 5 ----------------------
– 4 – IEC 61980-1:2020 © IEC 2020

17 Marking and instructions ................................................................................................ 41

17.1 General ................................................................................................................. 41

17.2 Marking of supply device ....................................................................................... 41

17.3 Legibility ............................................................................................................... 41

17.4 Connection instructions ......................................................................................... 41

Bibliography .......................................................................................................................... 42

Figure 1 – Example of a WPT system ................................................................................... 19

Table 1 – WPT equipment immunity requirement – Environment other than residential ......... 34

Table 2 – WPT equipment immunity requirement – Residential environment ......................... 35

Table 3 – Low frequency disturbances .................................................................................. 36

Table 4 – Radio frequency (RF) disturbances ....................................................................... 37

Table 5 – Limits of the magnetic field strength for WPT system for class A in the range

9 kHz to 150 kHz .................................................................................................................. 38

Table 6 – Limits of the magnetic field strength for WPT system for class B in the range

9 kHz to 150 MHz ................................................................................................................. 39

Table 7 – Limits of the magnetic field strength for WPT system for class A in the range

150 kHz to 30 MHz ............................................................................................................... 40

Table 8 – Limits of the magnetic field strength for WPT system for class B in the range

150 kHz to 30 MHz ............................................................................................................... 40

---------------------- Page: 6 ----------------------
IEC 61980-1:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC VEHICLE WIRELESS POWER TRANSFER (WPT) SYSTEMS –
Part 1: General requirements
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

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6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61980-1 has been prepared by IEC technical committee 69:

Electrical power/energy transfer systems for electrically propelled road vehicles and industrial

trucks.

This second edition cancels and replaces the first edition published in 2015. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) the contents of IEC 61980-1:2015 have been re-organized so that this document is generally

applicable to any WPT technologies;

b) technology specific requirements, mostly for MF-WPT in the main text of IEC 61980-1:2015,

have been transferred to IEC 61980-2 and IEC 61980-3;

c) Annex A, Annex B and Annex C have been removed and contents of these annexes have

been transferred to the relevant technology specific parts of the IEC 61980 series;

d) duplications and overlaps of the requirements within IEC 61980-1:2015 have been resolved;

---------------------- Page: 7 ----------------------
– 6 – IEC 61980-1:2020 © IEC 2020

e) terms and definitions which are specified in IEC 61851-1:2017 and are applicable for WPT

system have been directly described in this document, with modification for some terms.

The reference to IEC 61851-1 is withdrawn.
The text of this International Standard is based on the following documents:
FDIS Report on voting
69/731/FDIS 69/736/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the IEC 61980 series, published under the general title Electric vehicle

wireless power transfer (WPT) systems, can be found on the IEC website.
In this document, the following print types are used:

– test specifications and instructions regarding the application of this document: italic type;

– notes: smaller roman type.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 8 ----------------------
IEC 61980-1:2020 © IEC 2020 – 7 –
INTRODUCTION

The IEC 61980 series is published in separate parts according to the following structure:

• IEC 61980-1 covers general requirements for electric road vehicle (EV) wireless power

transfer (WPT) systems including general background and definitions (e.g. efficiency,

electrical safety, EMC, EMF);

• IEC 61980-2 specifically applies to magnetic field wireless power transfer (MF-WPT) for

electric road vehicles and covers specific requirements for system activities and

communication between the electric road vehicle side and the off-board side including

general background and definitions;

• IEC 61980-3 covers specific power transfer requirements for the off-board side of magnetic

field wireless power transfer systems for electric road vehicles (e.g. efficiency, electrical

safety, EMC, EMF).

The requirements described in this document are general. The technical requirements for the

various wireless power transfer technologies are specific. The requirements for magnetic field-

wireless power transfer systems are described in IEC 61980-2 and IEC 61980-3. Further parts

of this series are reserved to other technologies.

Reference to "technology specific parts" always refer to other parts of the IEC 61980 series.

---------------------- Page: 9 ----------------------
– 8 – IEC 61980-1:2020 © IEC 2020
ELECTRIC VEHICLE WIRELESS POWER TRANSFER (WPT) SYSTEMS –
Part 1: General requirements
1 Scope

This part of IEC 61980 applies to the supply device for charging electric road vehicles using

wireless methods at standard supply voltages per IEC 60038 up to 1 000 V AC and up to

1 500 V DC.

Electric road vehicles (EV) covers road vehicles, including plug-in hybrid road vehicles (PHEV)

that derive all or part of their energy from on-board rechargeable energy storage systems

(RESS).

This document also applies to wireless power transfer (WPT) equipment supplied from on-site

storage systems (e.g. buffer batteries).
The aspects covered in this document include
• the characteristics and operating conditions of a supply device,
• the specification for required level of electrical safety of a supply device,
• communication between EV device and vehicle to enable and control WPT,
• efficiency, alignment and other activities to enable WPT, and
• specific EMC requirements for a supply device.
The following aspects are under consideration for future documents:
• requirements for MF-WPT systems supplying power to EVs in motion;
• requirements for bidirectional power transfer.
This document does not apply to:
• safety aspects related to maintenance,

• WPT system for trolley buses, rail vehicles and vehicles designed primarily for use off‑road,

and
• any safety or EMC requirements for the vehicle side.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.
IEC 60038, IEC standard voltages
IEC 60068-2-1, Environmental testing – Part 2‑1: Tests – Test A: Cold
IEC 60068-2-2, Environmental testing – Part 2‑2: Tests – Test B: Dry heat
---------------------- Page: 10 ----------------------
IEC 61980-1:2020 © IEC 2020 – 9 –

IEC 60068-2-5, Environmental testing – Part 2‑5: Tests – Test S: Simulated solar radiation at

ground level and guidance for solar radiation testing and weathering

IEC 60068-2-11, Basic environmental testing procedures – Part 2‑11: Tests – Test Ka: Salt mist

IEC 60068-2-30, Environmental testing – Part 2‑30: Tests – Test Db: Damp heat, cyclic (12 h +

12 h cycle)

IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state

IEC 60085, Electrical insulation – Thermal evaluation and designation

IEC 60216 (all parts), Electrical insulating materials – Thermal endurance properties

IEC 60269 (all parts), Low-voltage fuses

IEC 60309-1, Plugs, socket-outlets and couplers for industrial purposes – Part 1: General

requirements

IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes – Part 2: Dimensional

interchangeability requirements for pin and contact-tube accessories
IEC 60320 (all parts), Appliance couplers for household and sim
...

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