IEC 61980-3:2022
(Main)Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements for magnetic field wireless power transfer systems
Electric vehicle wireless power transfer (WPT) systems - Part 3: Specific requirements for magnetic field wireless power transfer systems
IEC 61980-3:2022 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.
IEC 61980-3:2022 is to be used in conjunction with IEC 61980-1:2020.
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.
General Information
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Standards Content (Sample)
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
IEC 61980-3:2022-11(en-fr)
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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
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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 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
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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
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– 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
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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
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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
0
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
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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
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