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BS EN IEC 61980-3:2022:2023 Edition

BS EN IEC 61980-3:2022:2023 Edition

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Electric vehicle wireless power transfer (WPT) systems – Specific requirements for magnetic field wireless power transfer systems

Published By Publication Date Number of Pages
BSI 2023 128
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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.

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PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
10 Blank Page
11 English
CONTENTS
16 FOREWORD
18 INTRODUCTION
19 1 Scope
2 Normative references
20 3 Terms and definitions
24 4 Abbreviated terms
5 General
6 Classification
25 Figures
Figure 101 ā€“ Surface mounted
Figure 102 ā€“ Flush mounted
Tables
Table 101 ā€“ MF-WPT power classes
26 7 General supply device requirements
7.1 General architecture
Table 102 ā€“ Supported secondary device ground clearance range
27 7.2 Power transfer requirements
Figure 1 ā€“ Example of an MF-WPT system
29 Table 103 ā€“ Compatibility class A supply device output power ramp rates
30 7.3 Efficiency
Table 104 ā€“ Minimum power transfer efficiency with compatibility class A supplydevice and normative reference EV device of same power class
Table 105 ā€“ Minimum power transfer efficiency with compatibility class A supplydevice and normative reference EV device of different power classes
31 7.4 Alignment
7.5 Activities provided by WPT system
Table 106 ā€“ Minimum power transfer efficiency for a compatibilityclass B supply device and specified EVPC
Table 107 ā€“ Alignment tolerance of a primary device (compatibility class A)
32 Table 108 ā€“ Summary requirements according to compatibility class
33 8 Communication
9 Power transfer interoperability
34 10 Protection against electric shock
10.1 General requirements
10.2 Degree of protection against access to hazardous-live-parts
11 Specific requirements for WPT systems
36 Figure 103 ā€“ Test bench protection areas
38 12 Power cable requirements
39 13 Constructional requirements
13.1 Supply device dimensions and installation requirements
13.4 IP degrees
14 Strength of materials and parts
40 15 Service and test conditions
41 16 Electromagnetic compatibility (EMC)
16.1 Load and operating conditions
42 Figure 104 ā€“ Example of test bench setup (version 1) ā€“ View from above
43 Figure 105 ā€“ Example of test bench setup (version 2) ā€“ View from above
44 Figure 106 ā€“ Side view of test setup shown in Figure 104
45 Figure 107 ā€“ Example of vehicle test setup (version 1) ā€“ View from above
46 Figure 108 ā€“ Example of vehicle test setup (version 2) ā€“ View from above
47 17 Marking and instructions
Figure 109 ā€“ Side view of test setup shown in Figure 107
50 Figure 110 ā€“ Illustration of test positions
51 Table 109 ā€“ Alignment positions and offset values for primary deviceswhich are part of compatibility class A supply devices
53 Table 110 ā€“ Compatibility class A test 2 test positions
56 Table 111 ā€“ Example of compatibility class B supply device test 2 test positions
57 Table 112 ā€“ Test bodies for touch hazard
Table 113 ā€“ Test objects for ignition risk test
62 Table 114 ā€“ Vehicle detection action
63 Annex A (normative)Circular reference EVPC
A.1 Circular reference EVPCs for MF-WPT1
64 Figure A.1 ā€“ Mechanical dimensions of the MF-WPT1/Z1 reference secondary device
65 Figure A.2 ā€“ Schematic of the EV power electronics for the MF-WPT1/Z1 reference EVPC
Figure A.3 ā€“ Impedance compensation circuit
Table A.1 ā€“ Values of circuit elements for Figure A.2
66 Figure A.4 ā€“ Example of a rectifier circuit
Table A.2 ā€“ Range of coupling factors
67 Figure A.5 ā€“ Mechanical dimensions of the MF-WPT1/Z2 reference secondary device
68 Figure A.6 ā€“ Schematic of the EV power electronics for the MF-WPT1 reference EVPC
Figure A.7 ā€“ Impedance compensation circuit
Table A.3 ā€“ Values of circuit elements for Figure A.6
69 Figure A.8 ā€“ Example of a rectifier circuit
Table A.4 ā€“ Range of coupling factors
70 Figure A.9 ā€“ Mechanical dimensions of the MF-WPT1/Z3 reference secondary device
71 Figure A.10 ā€“ Schematic of the EV power electronicsfor the MF-WPT1/Z3 reference EVPC
Figure A.11 ā€“ Impedance compensation circuit
Table A.5 ā€“ Values of circuit elements for Figure A.10
72 A.2 Circular reference EVPCs for MF-WPT1/MF-WPT2
Figure A.12 ā€“ Example of a rectifier circuit
Table A.6 ā€“ Range of coupling factors
73 Figure A.13 ā€“ Mechanical dimensions of the MF-WPT1and MF-WPT2 Z1 reference secondary device
74 Figure A.14 ā€“ Schematic of the EV power electronics for the MF-WPT1and MF-WPT2 Z1 reference EVPC
Figure A.15 ā€“ Example of an impedance compensation circuit using variable reactances
Table A.7 ā€“ Values of circuit elements for Figure A.14
75 Figure A.16 ā€“ Example of a rectifier circuit
Table A.8 ā€“ Values of variable reactances
Table A.9 ā€“ Coupling factors and coil current MF-WPT1 and MF-WPT2 Z1
76 Figure A.17 ā€“ Mechanical dimensions of the MF-WPT1and MF-WPT2 Z2 reference secondary device
77 Figure A.18 ā€“ Schematic of the EV power electronics for the MF-WPT1and MF-WPT2 Z2 reference EVPC
Figure A.19 ā€“ Example of impedance compensation circuit using variable reactances
Table A.10 ā€“ Values of circuit elements for Figure A.18
78 Figure A.20 ā€“ Example of a rectifier circuit
Table A.11 ā€“ Values of variable reactances
Table A.12 ā€“ Coupling factors and coil current MF-WPT1 and MF-WPT2 Z2
79 Figure A.21 ā€“ Mechanical dimensions of the MF-WPT1and MF-WPT2 Z3 reference secondary device
80 Figure A.22 ā€“ Schematic of the EV power electronics for the MF-WPT1and MF-WPT2 reference EVPC
Figure A.23 ā€“ Example of impedance compensation circuit using variable reactances
Table A.13 ā€“ Values of circuit elements for Figure A.22
81 A.3 Circular reference EVPCs for MF-WPT3
Figure A.24 ā€“ Example of a rectifier circuit
Table A.14 ā€“ Values of variable reactances
Table A.15 ā€“ Coupling factors and coil current MF-WPT1 and MF-WPT2 Z3
82 Figure A.25 ā€“ Mechanical dimensions of the MF-WPT3/Z1 reference secondary device
83 Figure A.26 ā€“ Schematic of the EV power electronics for the MF-WPT3 reference EVPC
Figure A.27 ā€“ Example for impedance compensation circuit using variable reactances
Table A.16 ā€“ Values of circuit elements for Figure A.26
84 Figure A.28 ā€“ Example for an output filter and rectifier
Table A.17 ā€“ Values of variable reactances
Table A.18 ā€“ Inductance values for Figure A.28
Table A.19 ā€“ Coupling factors and coil current MF-WPT3/Z1
85 Figure A.29 ā€“ Mechanical dimensions of the MF-WPT3/Z2 reference secondary device
86 Figure A.30 ā€“ Schematic of the EV power electronicsfor the MF-WPT3/Z2 reference EVPC
Figure A.31 ā€“ Example for impedance compensation circuit using variable reactances
Table A.20 ā€“ Values of circuit elements for Figure A.30
87 Figure A.32 ā€“ Example of an output filter and rectifier
Table A.21 ā€“ Values of variable reactances
Table A.22 ā€“ Inductance values for Figure A.32
Table A.23 ā€“ Coupling factors and coil current MF-WPT3/Z2
88 Figure A.33 ā€“ Mechanical dimensions of the MF-WPT3/Z3 reference secondary device
89 Figure A.34 ā€“ Schematic of the EV power electronics for the MF-WPT3 reference EVPC
Figure A.35 ā€“ Example of an impedance compensation circuit using variable reactances
Table A.24 ā€“ Values of circuit elements for Figure A.17
Table A.25 ā€“ Values of variable reactances
90 Figure A.36 ā€“ Example of an output filter and rectifier
Table A.26 ā€“ Inductance values for Figure A.36
Table A.27 ā€“ Coupling factors and coil current MF-WPT3/Z3
91 Annex B (informative)Examples of other secondary devices
B.1 DD secondary device for MF-WPT1/Z1
Figure B.1 ā€“ Mechanical dimensions of the MF-WPT1/Z1 DD secondary device
Table B.1 ā€“ Mechanical dimensions of the MF-WPT1/Z1 DD secondary device
92 B.2 DD secondary device for MF-WPT1/Z2
B.3 DD secondary device for MF-WPT2/Z1
Figure B.2 ā€“ Mechanical dimensions of the MF-WPT1/Z2 DD secondary device
Table B.2 ā€“ Mechanical dimensions of the MF-WPT1/Z2 DD secondary device
93 B.4 DD secondary device for MF-WPT2/Z2
Figure B.3 ā€“ Mechanical dimensions of the MF-WPT2/Z1 DD secondary device
Table B.3 ā€“ Mechanical dimensions of the MF-WPT2/Z1 DD reference secondary device
94 B.5 DD secondary device for MF-WPT2/Z3
Figure B.4 ā€“ Mechanical dimensions of the MF-WPT2/Z2 DD secondary device
Table B.4 ā€“ Mechanical dimensions of the MF-WPT2/Z2 DD reference secondary device
95 B.6 DD secondary device for MF-WPT3/Z1
Figure B.5 ā€“ Mechanical dimensions of the MF-WPT2/Z3 DD secondary device
Table B.5 ā€“ Mechanical dimensions of the MF-WPT2/Z3 DD secondary device
96 B.7 DD secondary device for MF-WPT3/Z2
Figure B.6 ā€“ Mechanical dimensions of the MF-WPT3/Z1 DD secondary device
Table B.6 ā€“ Mechanical dimensions of the MF-WPT3/Z1 DD secondary device
97 B.8 DD secondary device for MF-WPT3/Z3
Figure B.7 ā€“ Mechanical dimensions of the MF-WPT3/Z2 DD secondary device
Table B.7 ā€“ Mechanical dimensions of the MF-WPT3/Z2 DD secondary device
98 Figure B.8 ā€“ Mechanical dimensions of the MF-WPT3/Z3 DD secondary device
Table B.8 ā€“ Mechanical dimensions of the MF-WPT3/Z3 DD secondary device
99 Annex C (informative)Coil position in parking spot
C.1 General
C.2 Width of vehicles and parking spots
C.3 Placement along the direction of travel
101 Annex D (informative)Theoretical approach for system interoperability
D.1 General
D.2 Magnetic and electric interoperability
102 Figure D.1 ā€“ General schematic of the concept showing the coils with their portsto the power electronics and the varying parameters
103 Table D.1 ā€“ Description of terms
106 Table D.2 ā€“ Fundamental mutual inductance values M0 for Z1 (in ĀµH)
107 Table D.3 ā€“ Fundamental mutual inductance values M0 for Z2 (in ĀµH)
108 Table D.4 ā€“ Fundamental mutual inductance values M0 for Z3 (in ĀµH)
109 Figure D.2 ā€“ Schematic to explain impedance
Table D.5 ā€“ Explanation of terms
111 Figure D.3 ā€“ General behaviour of the reflected impedance (example)
114 Table D.6 ā€“ Voltages (RMS) required to be induced in circular reference secondary coils
116 Figure D.4 ā€“ Impedance space at the primary coil (example)
117 Figure D.5 ā€“ Impedance spaces of the reference primary coil and alternate electronics
Table D.7 ā€“ Recommended parameters for primary coil impedance space
118 D.3 Compliance test and measurement specifications
119 Figure D.6 ā€“ Test set-up for reference or product primary coilelectric interoperability conformance tests
122 Figure D.7 ā€“ Coaxial coil gauge device “CC325”
124 Figure D.8 ā€“ Transversal coil gauge device “DD275”
125 Annex E (informative)Determining centre alignment point
E.1 General
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
E.3 Laboratory procedure for determining the approximate centre alignment point of an EVPC with a primary device of a reference SPC
E.4 Determining the centre alignment point for a coil pair through simulation
126 Bibliography

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