EN IEC 61980-3:2022

Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements for magnetic field wireless power transfer systems

This part of IEC 61980 applies to the off-board supply equipment for wireless power transfer via magnetic field (MF-WPT) to electric road vehicles for purposes of supplying electric energy to the RESS (rechargeable energy storage system) and/or other on-board electrical systems. The MF-WPT system operates at standard supply voltage ratings per IEC 60038 up to 1 000 V AC and up to 1 500 V DC from the supply network. The power transfer takes place while the electric vehicle (EV) is stationary. Off-board supply equipment fulfilling the requirements in this document are intended to operate with EV devices fulfilling the requirements described in ISO 19363. The aspects covered in this document include - the characteristics and operating conditions, - the required level of electrical safety, - requirements for basic communication for safety and process matters if required by a MF111 WPT system, - requirements for positioning to assure efficient and safe MF-WPT power transfer, and - specific EMC requirements for MF-WPT systems. The following aspects are under consideration for future documents: - requirements for MF-WPT systems for two- and three-wheel vehicles, - requirements for MF-WPT systems supplying power to EVs in motion, and - requirements for bidirectional power transfer. - requirements for flush mounted primary devices - requirements for MF-WPT systems for heavy duty vehicles - requirements for MF-WPT systems with inputs greater than 11,1 kVA This standard does not apply to - safety aspects related to maintenance, and - trolley buses, rail vehicles and vehicles designed primarily for use off-road. NOTE The terms used in this document are specifically for MF-WPT.

Kontaktlose Energieübertragungssysteme (WPT) für Elektrofahrzeuge - Teil 3: Besondere Anforderungen für die kontaktlosen Energieübertragungssysteme mit Magnetfeld

Systèmes de transfert de puissance sans fil (WPT) pour véhicules électriques - Partie 3: Exigences spécifiques pour les systèmes de transfert de puissance sans fil par champ magnétique

L'IEC 61980-3:2022 s'applique au matériel d'alimentation non embarqué pour le transfert de puissance sans fil par champ magnétique (MF-WPT) aux véhicules électriques routiers, afin d'assurer l'alimentation en énergie électrique du RESS (système de stockage d'énergie rechargeable) et/ou d'autres systèmes électriques embarqués. Le système MF-WPT fonctionne aux tensions d'alimentation assignées normalisées selon l'IEC 60038, jusqu'à 1 000 V en courant alternatif et jusqu'à 1 500 V en courant continu, du réseau d'alimentation. Le transfert de puissance a lieu lorsque le véhicule électrique (VE) est immobile. Un matériel d'alimentation non embarqué qui satisfait aux exigences du présent document est prévu pour fonctionner avec des dispositifs de VE qui satisfont aux exigences décrites dans l'ISO 19363. Le présent document couvre: – les caractéristiques et les conditions de fonctionnement; – le niveau exigé de sécurité électrique; – les exigences de communication de base pour les questions de sécurité et de processus, si un système MF WPT l'exige; – les exigences de positionnement pour assurer un transfert de puissance MF-WPT efficace et sûr; et – les exigences de compatibilité électromagnétique (CEM) spécifiques aux systèmes MF WPT. Les aspects suivants sont à l'étude pour les documents ultérieurs: – les exigences relatives aux systèmes MF-WPT pour véhicules à deux et trois roues; – les exigences relatives aux systèmes MF-WPT qui alimentent les VE en mouvement; – les exigences relatives au transfert de puissance bidirectionnel; – les exigences relatives aux dispositifs principaux encastrés; – les exigences relatives aux systèmes MF-WPT pour véhicules utilitaires lourds; et – les exigences relatives aux systèmes MF-WPT avec des puissances d'entrée supérieures à 11,1 kVA. Le présent document ne s'applique pas – aux aspects de sécurité relatifs à la maintenance; et – aux trolleybus, aux véhicules ferroviaires et aux véhicules conçus principalement pour une exploitation non routière. L'IEC 61980-3:2022 doit être utilisée conjointement avec l'IEC 61980-1:2020.

Brezžični sistemi za prenos električne energije za električna vozila (WPT) - 3. del: Posebne zahteve za sistem brezžičnega prenosa energije z magnetnim poljem (IEC 61980-3:2022)

Ta del standarda IEC 61980 se uporablja za vgradno napajalno opremo za brezžični prenos energije prek magnetnega polja (MF-WPT) v električna cestna vozila za namene dovajanja električne energije sistemu RESS (sistemu za shranjevanje energije z možnostjo polnjenja) in/ali drugim električnim sistemom v vozilih. Sistem MF-WPT deluje s standardnimi nazivnimi napajalnimi napetostmi v skladu s standardom IEC 60038 do 1000 V izmenične napetosti in do 1500 V enosmerne napetosti iz napajalnega omrežja. Prenos energije poteka, ko električno vozilo (EV) miruje.
Zunanja napajalna oprema, ki izpolnjuje zahteve iz tega dokumenta, je namenjena delovanju z napravami električnega vozila, ki izpolnjujejo zahteve, opisane v standardu ISO 19363.
V tem dokumentu so zajeti naslednji vidiki:
– lastnosti in pogoji delovanja;
– zahtevana raven električne varnosti;
– zahteve za osnovno komunikacijo za varnostne in procesne zadeve, če jih zahteva sistem MF111 WPT;
– zahteve glede položaja za zagotavljanje učinkovitega in varnega prenosa energije MF-WPT; in
– posebne zahteve glede elektromagnetne združljivosti sistemov MF-WPT.
Za morebitno vključitev v prihodnje dokumente se obravnavajo naslednji vidiki:
– zahteve za sisteme MF-WPT za dvo- in trikolesna vozila;
– zahteve za sisteme MF-WPT, ki napajajo električna vozila v gibanju;
– zahteve za dvosmerni prenos energije;
– zahteve za vgrajene primarne naprave;
– zahteve za sisteme MF-WPT za težka motorna vozila;
– zahteve za sisteme MF-WPT z vhodno energijo nad 11,1 kVA.
Ta standard se ne uporablja za:
– varnostne vidike v povezavi z vzdrževanjem; in
– trolejbuse, železniška vozila in vozila, ki so namenjena predvsem za uporabo zunaj cestišč.
OPOMBA: Izrazi, uporabljeni v tem dokumentu, veljajo posebej za sisteme MF-WPT.

General Information

• Status: Published
• Publication Date: 22-Dec-2022
• ICS: 43.120 - Electric road vehicles
• Technical Committee: CLC/TC 69X - Electrical systems for electric road vehicles
• Drafting Committee: IEC/TC 69 - IEC_TC_69
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 23-Dec-2022
• Due Date: 31-May-2021
• Completion Date: 23-Dec-2022
• Directive: 2014/94/EU - Directive 2014/94/EU of The European Parliament and of The Council of 22 October 2014 on the deployment of alternative fuels infrastructure
• Directive: 2023/1804 - Regulation (EU) 2023/1804 of the European Parliament and of the Council of 13 September 2023 on the deployment of alternative fuels infrastructure, and repealing Directive 2014/94/EU
• Directive: 2023/1804-1 - Regulation (EU) 2023/1804 of the European Parliament and of the Council of 13 September 2023 on the deployment of alternative fuels infrastructure, and repealing Directive 2014/94/EU
• Directive: 2023/1804-2 - Regulation (EU) 2023/1804 of the European Parliament and of the Council of 13 September 2023 on the deployment of alternative fuels infrastructure, and repealing Directive 2014/94/EU
• Mandate: M/581 - Standardisation Request as regards communication exchange, electricity, and hydrogen supply for road, maritime transport and inland navigation in support of Directive 2014/94/EU and its planned revision under the ‘Fit for 55’package
• Ref Project: SIST EN IEC 61980-3:2023 - Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements for the magnetic field wireless power transfer systems (IEC 61980-3:2022)

Relations

• Replaces: CLC IEC/TS 61980-3:2020 - Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements for the magnetic field wireless power transfer systems
• Effective Date: 27-Dec-2022

Overview

EN IEC 61980-3:2022 specifies the specific requirements for magnetic field wireless power transfer (MF‑WPT) systems used for stationary wireless charging of electric road vehicles. It applies to off‑board supply equipment that transfers power magnetically to an EV’s RESS (rechargeable energy storage system) and/or on‑board electrical systems. The standard covers MF‑WPT systems operating at standard supply voltages (per IEC 60038) up to 1 000 V AC and 1 500 V DC, and is intended to be used with EV devices that conform to ISO 19363.

Key topics and technical requirements

EN IEC 61980-3:2022 sets out technical, safety and interoperability requirements for MF‑WPT systems, including:

• System characteristics & operating conditions: architecture, power transfer modes, efficiency targets and load/operating scenarios for wireless charging systems.
• Power transfer requirements: definitions of primary and secondary devices, power levels, and conditions for safe, effective energy transfer while the EV is stationary.
• Electrical safety and protection: protection against electric shock, live‑part access control, and required degrees of protection (IP ratings).
• Communication for safety/process: basic communications requirements between supply equipment and EV for safety and charging control (interoperability with ISO 19363 and related protocols).
• Positioning and alignment: requirements and test procedures to ensure correct coil alignment and parking positioning for efficient MF‑WPT power transfer.
• Electromagnetic compatibility (EMC): specific EMC requirements and test setups for MF‑WPT equipment to limit interference and comply with regulatory limits.
• Construction, installation and testing: mechanical dimensions, installation constraints (surface or flush mounted), test bench and vehicle test setups, and service/test conditions.
• Excluded items & future work: excludes maintenance safety, trolley/rail/off‑road vehicles. Future parts may address in‑motion charging, two/three‑wheel vehicles, bidirectional power transfer, heavy‑duty systems, flush‑mounted primaries and >11.1 kVA inputs.

Applications and users

This standard is essential for:

• EV infrastructure manufacturers designing wireless EV charging (MF‑WPT) systems and off‑board supply equipment
• Automotive OEMs and EV powertrain engineers integrating wireless charging compatibility
• Test laboratories performing conformity, EMC and safety testing for MF‑WPT
• System integrators, site planners and installers of EV parking and charging infrastructure
• Regulators and certification bodies assessing safety, interoperability and EMC compliance

Related standards

• EN IEC 61980‑1 (general WPT requirements)
• EN IEC 61980‑2 (communication/interoperability)
• ISO 19363 (safety & interoperability for MF‑WPT devices)
• IEC 60038 (standard supply voltages)

EN IEC 61980-3:2022 is a practical reference for designing, testing and certifying safe, interoperable magnetic field wireless charging solutions for electric road vehicles. Keywords: EN IEC 61980-3:2022, MF‑WPT, electric vehicle wireless power transfer, wireless charging, EV interoperability, ISO 19363, EMC, alignment, off‑board supply equipment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2023
Nadomešča:
SIST-TS CLC IEC/TS 61980-3:2020
Brezžični sistemi za prenos električne energije za električna vozila (WPT) - 3. del:
Posebne zahteve za sistem brezžičnega prenosa energije z magnetnim poljem (IEC
61980-3:2022)
Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements
for the magnetic field wireless power transfer systems (IEC 61980-3:2022)
Kontaktlose Energieübertragungssysteme (WPT) für Elektrofahrzeuge - Teil 3:
Besondere Anforderungen für die kontaktlosen Energieübertragungssysteme mit
Magnetfeld (IEC 61980-3:2022)
Systèmes de transfert de puissance sans fil (WPT) pour véhicules électriques - Partie 3:
Exigences spécifiques pour les systèmes de transfert de puissance sans fil par champ
magnétique (IEC 61980-3:2022)
Ta slovenski standard je istoveten z: EN IEC 61980-3:2022
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61980-3

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2022
ICS 43.120 Supersedes CLC IEC/TS 61980-3:2020
English Version
Electric vehicle wireless power transfer (WPT) systems - Part 3:
Specific requirements for magnetic field wireless power transfer
systems
(IEC 61980-3:2022)
Systèmes de transfert de puissance sans fil (WPT) pour Kontaktlose Energieübertragungssysteme (WPT) für
véhicules électriques - Partie 3: Exigences spécifiques pour Elektrofahrzeuge - Teil 3: Besondere Anforderungen für die
les systèmes de transfert de puissance sans fil par champ kontaktlosen Energieübertragungssysteme mit Magnetfeld
magnétique (IEC 61980-3:2022)
(IEC 61980-3:2022)
This European Standard was approved by CENELEC on 2022-12-22. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61980-3:2022 E

European foreword
The text of document 69/857/FDIS, future edition 1 of IEC 61980-3, prepared by IEC/TC 69 "Electrical
power/energy transfer systems for electrically propelled road vehicles and industrial trucks" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61980-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-09-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-12-22
document have to be withdrawn
This document supersedes CLC IEC/TS 61980-3:2020 and all of its amendments and corrigenda (if
any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN IEC 61980-1:2021.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61980-3:2022 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60038 NOTE Harmonized as EN 60038
IEC 61786-1 NOTE Harmonized as EN 61786-1
ISO 15118-1:2019 NOTE Harmonized as EN ISO 15118-1:2019 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
IEC 61439-1 2020 Low-voltage switchgear and controlgear EN IEC 61439-1 2021
assemblies - Part 1: General rules
IEC 61439-7 2018 Low-voltage switchgear and controlgear - -
assemblies - Part 7: Assemblies for specific
applications such as marinas, camping sites,
market squares, electric vehicle charging
stations
IEC 61980-1 2020 Electric vehicle wireless power transfer EN IEC 61980-1 2021
(WPT) systems - Part 1: General
requirements
1 2
IEC 61980-2 — Electric vehicle wireless power transfer EN IEC 61980-2 —
(WPT) systems - Part 2: Specific
requirements for communication between
electric road vehicles (EV) and infrastructure
with respect to wireless power transfer
(WTP) systems
ISO 19363 2020 Electrically propelled road vehicles - EN ISO 19363 2021
Magnetic field wireless power transfer -
Safety and interoperability requirements
ISO 20653 - Road vehicles - Degrees of protection (IP - -
code) - Protection of electrical equipment
against foreign objects, water and access
ICNIRP - ICNIRP guidelines for limiting exposure to - -
time-varying electric and magnetic fields
(1 Hz – 100 kHz), Health Physics
99(6):818‐836; 2010
Under preparation. Stage at the time of publication: IEC/AFDIS 61980-2:2022.
Under preparation. Stage at the time of publication: prEN IEC 61980-2:2021.
Publication Year Title EN/HD Year
Recommendation 2019 Guidance on frequency ranges for operation
ITU-R SM.2110-1 of nonbeam wireless power transmission for
electric vehicles
IEC 61980-3 ®
Edition 1.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric vehicle wireless power transfer (WPT) systems –

Part 3: Specific requirements for magnetic field wireless power transfer systems

Systèmes de transfert de puissance sans fil (WPT) pour véhicules électriques –

Partie 3: Exigences spécifiques pour les systèmes de transfert de puissance

sans fil par champ magnétique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 43.120 ISBN 978-2-8322-6023-4

– 2 – IEC 61980-3:2022 © IEC 2022
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 11
4 Abbreviated terms . 15
5 General . 15
6 Classification . 15
7 General supply device requirements . 17
7.1 General architecture . 17
7.2 Power transfer requirements . 18
7.3 Efficiency . 21
7.4 Alignment . 22
7.5 Activities provided by WPT system . 22
8 Communication . 24
9 Power transfer interoperability . 24
10 Protection against electric shock . 25
10.1 General requirements . 25
10.2 Degree of protection against access to hazardous-live-parts . 25
11 Specific requirements for WPT systems . 25
12 Power cable requirements . 29
13 Constructional requirements . 30
13.1 Supply device dimensions and installation requirements . 30
13.4 IP degrees . 30
14 Strength of materials and parts . 30
15 Service and test conditions . 31
16 Electromagnetic compatibility (EMC) . 32
16.1 Load and operating conditions . 32
17 Marking and instructions . 38
Annex A (normative) Circular reference EVPC . 54
A.1 Circular reference EVPCs for MF-WPT1 . 54
A.2 Circular reference EVPCs for MF-WPT1/MF-WPT2 . 63
A.3 Circular reference EVPCs for MF-WPT3 . 72
Annex B (informative) Examples of other secondary devices. 82
B.1 DD secondary device for MF-WPT1/Z1 . 82
B.2 DD secondary device for MF-WPT1/Z2 . 83
B.3 DD secondary device for MF-WPT2/Z1 . 83
B.4 DD secondary device for MF-WPT2/Z2 . 84
B.5 DD secondary device for MF-WPT2/Z3 . 85
B.6 DD secondary device for MF-WPT3/Z1 . 86
B.7 DD secondary device for MF-WPT3/Z2 . 87
B.8 DD secondary device for MF-WPT3/Z3 . 88
Annex C (informative) Coil position in parking spot . 90
C.1 General . 90

IEC 61980-3:2022 © IEC 2022 – 3 –
C.2 Width of vehicles and parking spots . 90
C.3 Placement along the direction of travel . 90
Annex D (informative) Theoretical approach for system interoperability . 92
D.1 General . 92
D.2 Magnetic and electric interoperability . 92
D.3 Compliance test and measurement specifications . 109
Annex E (informative) Determining centre alignment point . 116
E.1 General . 116
E.2 Laboratory procedure for determining the approximate centre alignment
point of a primary device of an SPC with a secondary device of a reference
EVPC . 116
E.3 Laboratory procedure for determining the approximate centre alignment
point of an EVPC with a primary device of a reference SPC . 116
E.4 Determining the centre alignment point for a coil pair through simulation . 116
Bibliography . 117

Figure 101 – Surface mounted . 16
Figure 102 – Flush mounted . 16
Figure 1 – Example of an MF-WPT system . 18
Figure 103 – Test bench protection areas . 27
Figure 104 – Example of test bench setup (version 1) – View from above . 33
Figure 105 – Example of test bench setup (version 2) – View from above . 34
Figure 106 – Side view of test setup shown in Figure 104 . 35
Figure 107 – Example of vehicle test setup (version 1) – View from above . 36
Figure 108 – Example of vehicle test setup (version 2) – View from above . 37
Figure 109 – Side view of test setup shown in Figure 107 . 38
Figure 110 – Illustration of test positions . 41
Figure A.1 – Mechanical dimensions of the MF-WPT1/Z1 reference secondary device . 55
Figure A.2 – Schematic of the EV power electronics for the MF-WPT1/Z1 reference
EVPC . 56
Figure A.3 – Impedance compensation circuit . 56
Figure A.4 – Example of a rectifier circuit . 57
Figure A.5 – Mechanical dimensions of the MF-WPT1/Z2 reference secondary device . 58
Figure A.6 – Schematic of the EV power electronics for the MF-WPT1 reference EVPC . 59
Figure A.7 – Impedance compensation circuit . 59
Figure A.8 – Example of a rectifier circuit . 60
Figure A.9 – Mechanical dimensions of the MF-WPT1/Z3 reference secondary device . 61
Figure A.10 – Schematic of the EV power electronics for the MF-WPT1/Z3 reference
EVPC . 62
Figure A.11 – Impedance compensation circuit . 62
Figure A.12 – Example of a rectifier circuit . 63
Figure A.13 – Mechanical dimensions of the MF-WPT1 and MF-WPT2 Z1 reference
secondary device . 64
Figure A.14 – Schematic of the EV power electronics for the MF-WPT1 and MF-WPT2
Z1 reference EVPC . 65
Figure A.15 – Example of an impedance compensation circuit using variable
reactances . 65

– 4 – IEC 61980-3:2022 © IEC 2022
Figure A.16 – Example of a rectifier circuit . 66
Figure A.17 – Mechanical dimensions of the MF-WPT1 and MF-WPT2 Z2 reference
secondary device . 67
Figure A.18 – Schematic of the EV power electronics for the MF-WPT1 and MF-WPT2
Z2 reference EVPC . 68
Figure A.19 – Example of impedance compensation circuit using variable reactances . 68
Figure A.20 – Example of a rectifier circuit . 69
Figure A.21 – Mechanical dimensions of the MF-WPT1 and MF-WPT2 Z3 reference
secondary device . 70
Figure A.22 – Schematic of the EV power electronics for the MF-WPT1 and MF-WPT2
reference EVPC . 71
Figure A.23 – Example of impedance compensation circuit using variable reactances . 71
Figure A.24 – Example of a rectifier circuit . 72
Figure A.25 – Mechanical dimensions of the MF-WPT3/Z1 reference secondary device . 73
Figure A.26 – Schematic of the EV power electronics for the MF-WPT3 reference

EVPC . 74
Figure A.27 – Example for impedance compensation circuit using variable reactances . 74
Figure A.28 – Example for an output filter and rectifier . 75
Figure A.29 – Mechanical dimensions of the MF-WPT3/Z2 reference secondary device . 76
Figure A.30 – Schematic of the EV power electronics for the MF-WPT3/Z2 reference
EVPC . 77
Figure A.31 – Example for impedance compensation circuit using variable reactances . 77
Figure A.32 – Example of an output filter and rectifier . 78
Figure A.33 – Mechanical dimensions of the MF-WPT3/Z3 reference secondary device . 79
Figure A.34 – Schematic of the EV power electronics for the MF-WPT3 reference
EVPC . 80
Figure A.35 – Example of an impedance compensation circuit using variable

reactances . 80
Figure A.36 – Example of an output filter and rectifier . 81
Figure B.1 – Mechanical dimensions of the MF-WPT1/Z1 DD secondary device. 82
Figure B.2 – Mechanical dimensions of the MF-WPT1/Z2 DD secondary device. 83
Figure B.3 – Mechanical dimensions of the MF-WPT2/Z1 DD secondary device. 84
Figure B.4 – Mechanical dimensions of the MF-WPT2/Z2 DD secondary device. 85
Figure B.5 – Mechanical dimensions of the MF-WPT2/Z3 DD secondary device. 86
Figure B.6 – Mechanical dimensions of the MF-WPT3/Z1 DD secondary device. 87
Figure B.7 – Mechanical dimensions of the MF-WPT3/Z2 DD secondary device. 88
Figure B.8 – Mechanical dimensions of the MF-WPT3/Z3 DD secondary device. 89
Figure D.1 – General schematic of the concept showing the coils with their ports to the
power electronics and the varying parameters . 93
Figure D.2 – Schematic to explain impedance . 100
Figure D.3 – General behaviour of the reflected impedance (example) . 102
Figure D.4 – Impedance space at the primary coil (example) . 107
Figure D.5 – Impedance spaces of the reference primary coil and alternate electronics . 108
Figure D.6 – Test set-up for reference or product primary coil electric interoperability
conformance tests . 110
Figure D.7 – Coaxial coil gauge device "CC325" . 113

IEC 61980-3:2022 © IEC 2022 – 5 –
Figure D.8 – Transversal coil gauge device "DD275" . 115

Table 101 – MF-WPT power classes . 16
Table 102 – Supported secondary device ground clearance range . 17
Table 103 – Compatibility class A supply device output power ramp rates . 20
Table 104 – Minimum power transfer efficiency with compatibility class A supply device
and normative reference EV device of same power class . 21
Table 105 – Minimum power transfer efficiency with compatibility class A supply device
and normative reference EV device of different power classes . 21
Table 106 – Minimum power transfer efficiency for a compatibility class B supply
device and specified EVPC . 22
Table 107 – Alignment tolerance of a primary device (compatibility class A) . 22
Table 108 – Summary requirements according to compatibility class . 23
Table 109 – Alignment positions and offset values for primary devices which are part of
compatibility class A supply devices . 42
Table 110 – Compatibility class A test 2 test positions . 44
Table 111 – Example of compatibility class B supply device test 2 test positions . 47
Table 112 – Test bodies for touch hazard . 48
Table 113 – Test objects for ignition risk test . 48
Table 114 – Vehicle detection action. 53
Table A.1 – Values of circuit elements for Figure A.2 . 56
Table A.2 – Range of coupling factors . 57
Table A.3 – Values of circuit elements for Figure A.6 . 59
Table A.4 – Range of coupling factors . 60
Table A.5 – Values of circuit elements for Figure A.10 . 62
Table A.6 – Range of coupling factors . 63
Table A.7 – Values of circuit elements for Figure A.14 . 65
Table A.8 – Values of variable reactances . 66
Table A.9 – Coupling factors and coil current MF- WPT1 and MF-WPT2 Z1 . 66
Table A.10 – Values of circuit elements for Figure A.18 . 68
Table A.11 – Values of variable reactances . 69
Table A.12 – Coupling factors and coil current MF- WPT1 and MF-WPT2 Z2 . 69
Table A.13 – Values of circuit elements for Figure A.22 . 71
Table A.14 – Values of variable reactances . 72
Table A.15 – Coupling factors and coil current MF- WPT1 and MF-WPT2 Z3 . 72
Table A.16 – Values of circuit elements for Figure A.26 . 74
Table A.17 – Values of variable reactances . 75
Table A.18 – Inductance values for Figure A.28 . 75
Table A.19 – Coupling factors and coil current MF- WPT3/Z1 . 75
Table A.20 – Values of circuit elements for Figure A.30 . 77
Table A.21 – Values of variable reactances . 78
Table A.22 – Inductance values for Figure A.32 . 78
Table A.23 – Coupling factors and coil current MF- WPT3/Z2 . 78
Table A.24 – Values of circuit elements for Figure A.17 . 80

– 6 – IEC 61980-3:2022 © IEC 2022
Table A.25 – Values of variable reactances . 80
Table A.26 – Inductance values for Figure A.19 . 81
Table A.27 – Coupling factors and coil current MF- WPT3/Z3 . 81
Table B.1 – Mechanical dimensions of the MF-WPT1/Z1 DD secondary device . 82
Table B.2 – Mechanical dimensions of the MF-WPT1/Z2 DD secondary device . 83
Table B.3 – Mechanical dimensions of the MF-WPT2/Z1 DD reference secondary
device . 84
Table B.4 – Mechanical dimensions of the MF-WPT2/Z2 DD reference secondary
device . 85
Table B.5 – Mechanical dimensions of the MF-WPT2/Z3 DD secondary device . 86
Table B.6 – Mechanical dimensions of the MF-WPT3/Z1 DD secondary device . 87
Table B.7 – Mechanical dimensions of the MF-WPT3/Z2 DD secondary device . 88
Table B.8 – Mechanical dimensions of the MF-WPT3/Z3 DD secondary device . 89
Table D.1 – Description of terms . 94
Table D.2 – Fundamental mutual inductance values M for Z1 (in µH) . 97
Table D.3 – Fundamental mutual inductance values M0 for Z2 (in µH) . 98
Table D.4 – Fundamental mutual inductance values M0 for Z3 (in µH) . 99
Table D.5 – Explanation of terms . 100
Table D.6 – Voltages (RMS) required to be induced in circular reference secondary coils . 105
Table D.7 – Recommended parameters for primary coil impedance space . 108

IEC 61980-3:2022 © IEC 2022 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC VEHICLE WIRELESS POWER TRANSFER (WPT) SYSTEMS –

Part 3: Specific requirements for magnetic
field wireless power transfer systems

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,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
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
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
IEC 61980-3 has been prepared by IEC technical committee 69: Electrical power/energy
transfer systems for electrically propelled road vehicles and industrial trucks. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
69/857/FDIS 69/866/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 8 – IEC 61980-3:2022 © IEC 2022
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
In this document, the following print types are used:
• compliance statement: italic type.
This part is to be used in conjunction with IEC 61980-1:2020.
The clauses of the particular requirements in this document supplement or modify the
corresponding clauses in IEC 61980-1:2020. Where the text indicates an "addition" to or a
"replacement" of the relevant requirement, test specification or explanation of
IEC 61980‑1:2020, these changes are made to the relevant text of IEC 61980-1:2020, which
then becomes part of the standard. Where no change is necessary, the words
"Clause/Subclause xx of IEC 61980-1:2020 is applicable" are used. Additional items to those
of IEC 61980-1:2020 are numbered starting 101. Annexes are lettered from A onwards.
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.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

IEC 61980-3:2022 © IEC 2022 – 9 –
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 (EV) 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).
Requirements for the on-board side of MF-WPT for electric road vehicles are covered in
ISO 19363.
IEC 61980-3 follows the structure of IEC 61980-1:2020.

—————————
Under preparation. Stage at the time of publication: IEC/AFDIS 61980-2:2022.

– 10 – IEC 61980-3:2022 © IEC 2022
ELECTRIC VEHICLE WIRELESS POWER TRANSFER (WPT) SYSTEMS –

Part 3: Specific requirements for magnetic
field wireless power transfer systems

1 Scope
This part of IEC 61980 applies to the off-board supply equipment for wireless power transfer
via magnetic field (MF-WPT) to electric road vehicles for purposes of supplying electric energy
to the RESS (rechargeable energy storage system) and/or other on-board electrical systems.
The MF-WPT system operates at standard supply voltage ratings per IEC 60038 up to
1 000 V AC and up to 1 500 V DC from the supply network. The power transfer takes place
while the electric vehicle (EV) is stationary.
Off-board supply equipment fulfilling the requirements in this document are intended to operate
with EV devices fulfilling the requirements described in ISO 19363.
The aspects covered in this document include
– the characteristics and operating conditions,
– the required level of electrical safety,
– requirements for basic communication for safety and process matters if required by a
MF-WPT system,
– requirements for positioning to assure efficient and safe MF-WPT power transfer, and
– specific EMC requirements for MF-WPT systems.
The following aspects are under consideration for future documents:
– requirements for MF-WPT systems for two- and three-wheel vehicles,
– requirements for MF-WPT systems supplying power to EVs in motion,
– requirements for bidirectional power transfer,
– requirements for flush mounted primary device,
– requirements for MF-WPT systems for heavy duty vehicle, and
– requirements for MF-WPT systems with inputs greater than 11,1 kVA.
This document does not apply to
– safety aspects related to maintenance, and
– trolley buses, rail vehicles and vehicles designed primarily for use off-road.
NOTE The terms used in this document are specifically for MF-WPT.
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 60529, Degrees of protection provided by enclosures (IP Code)
IEC 61439-1:2020, Low-voltage switchgear and controlgear assemblies – Part 1: General rules

IEC 61980-3:2022 © IEC 2022 – 11 –
IEC 61439-7:2018, Low-voltage switchgear and controlgear assemblies – Part 7: Assemblies
for specific applications such as marinas, camping sites, market squares, electric vehicle
charging stations
IEC 61980-1:2020, Electric vehicle wireless power transfer (WPT) systems – Part 1: General
requirements
IEC 61980-2:—, Electric vehicle wireless power transfer (WPT) systems – Part 2: Specific
requirements for MF-WPT system communication and activities
ISO 19363:2020, Electrically propelled road vehicles – Magnetic field wireless power transfer –
Safety and interoperability requirements
ISO 20653, Road vehicles – Degrees of protection (IP code) – Protection of electrical equipment
against foreign objects, water and access
ICNIRP, ICNIRP guidelines for limiting exposure to time-varying electric and magnetic fields
(1 Hz – 100 kHz), Health Physics 99(6):818‐836; 2010
Recommendation ITU-R SM.2110-1:2019, Guidance on frequency ranges for operation of non-
beam wireless power transmission for electric vehicles
3 Terms and definitions
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
Clause 3 of IEC 61980-1:2020 is applicable.
Additional terms and definitions:
3.101
accessible part
part of equipment that can be touched without the use of a tool, excluding parts when under the
vehicle
3.102
alignment
relative position in X- and Y- direction of the secondary device to the primary device for a given
secondary device ground clearance
3.103
alignment tolerance area
intended WPT operating area in X- and Y- direction for a given secondary device ground
clearance
—————————
Under preparation. Stage at the time of publication: IEC/AFDIS 61980-2:2022.

– 12 – IEC 61980-3:2022 © IEC 2022
3.104
centre alignment point
spatial X, Y centre of the alignment tolerance area
Note 1 to entry: The centre alignment point is not a fixed point for any single coil. It only has relevance for a primary
and secondary device combination and is specific for that combination.
3.105
charge session
period when the SECC is in the WPT_S_PTA or WPT_S_PT state as defined in IEC 61980‑2
3.106
compatibility class A supply device
supply device that interoperates with compatibility class A EV devices
Note 1 to entry: See ISO 19363:2020, Clause 6.
Note 2 to entry: A compatibility class A supply device is interoperable with all normative reference EVPCs – see
Annex A.
3.107
compatibility class B supply device
supply device that operates with at least one compatibility class B EV device and might
interoperate with one or more compatibility class A EV devices
Note 1 to entry: See ISO 19363:2020, Clause 6.
Note 2 to entry: Interoperability with any of the normative reference EVPCs is optional.
3.108
connecting cable
cable which connects a physical unit containing portions of the SPC to another physical unit
containing portions of the SPC
Note 1 to entry: Cables within a physical unit are not connecting cables.
3.109
DUT
device under test
...