IEC 61980-3:2022

Overview

IEC 61980-3:2022 is an international standard developed by the International Electrotechnical Commission (IEC) that defines specific requirements for magnetic field wireless power transfer (MF-WPT) systems used in electric vehicle (EV) charging. This standard focuses on the off-board supply equipment facilitating wireless power transfer to the rechargeable energy storage system (RESS) and other on-board electrical systems of electric road vehicles while stationary.

The MF-WPT system addressed in IEC 61980-3:2022 operates at standard supply voltages up to 1,000 V AC or 1,500 V DC, adhering to IEC 60038. It is intended for compatibility and interoperability with EV devices following ISO 19363 requirements. This document complements IEC 61980-1:2020, which covers general requirements for electric vehicle WPT systems.

Key Topics

IEC 61980-3:2022 defines critical aspects for the design, safety, operation, and testing of magnetic field wireless power transfer systems, including:

• Characteristics and operating conditions: Defining system parameters to optimize safe and efficient wireless power transfer.
• Electrical safety requirements: Ensuring protection against electric shock and hazards for both users and maintenance personnel.
• Communication protocols: Establishing basic communications between off-board supply and on-board devices for safety monitoring and process control.
• Positioning and alignment: Setting requirements for coil positioning to maximize power transfer efficiency and vehicle alignment accuracy.
• Electromagnetic compatibility (EMC): Specifying EMC standards to minimize interference with other electrical systems and ensure reliable operation.
• General supply device requirements: Covering system architecture, power transfer efficiency, cable specifications, construction, durability, and installation guidelines.
• Protection levels: Guidelines for ingress protection (IP) ratings and mechanical strength to ensure system reliability under different environmental conditions.

The standard also outlines future considerations for:

• MF-WPT systems for two- and three-wheel vehicles.
• Power transfer to EVs while in motion.
• Bidirectional wireless power transfer capabilities.
• Flush mounted primary devices.
• Systems designed for heavy-duty vehicles.
• Systems with input power exceeding 11.1 kVA.

Applications

IEC 61980-3:2022 enables the development and deployment of magnetic field wireless charging systems specifically tailored for electric road vehicles such as passenger cars. The wireless power transfer technology described offers:

• Convenient and cable-free EV charging to enhance user experience.
• Safe and standardized off-board charging infrastructure that complies with international electrical and safety regulations.
• Compatibility with a wide range of electric vehicles adhering to ISO 19363 requirements.
• Potential expansion to various vehicle categories, including heavy-duty and two/three-wheel EVs, supporting future mobility trends.
• Foundations for integrating advanced functionalities like dynamic charging and bidirectional power flow in upcoming enhancements.

This standard is vital for manufacturers, system integrators, infrastructure providers, and regulatory bodies involved in the design, certification, and maintenance of EV wireless charging systems.

Related Standards

Implementing IEC 61980-3:2022 should be considered alongside the following standards for comprehensive wireless charging solutions:

• IEC 61980-1:2020 – General requirements for electric vehicle wireless power transfer systems.
• ISO 19363 – Specifies requirements for wireless power transfer communication and control between EV supply equipment and vehicles.
• IEC 60038 – Standard voltages that define standard supply voltage ratings applicable to WPT systems.
• EMC Standards – Relevant electromagnetic compatibility standards ensuring devices meet interference and immunity benchmarks.
• Safety Standards for Electrical Equipment – Covering electrical protection, shock prevention, and environmental resilience.

Adhering to this suite of standards promotes interoperability, safety, reliability, and global alignment in wireless power transfer technologies for electric vehicles.

By following IEC 61980-3:2022, stakeholders can ensure the deployment of efficient, safe, and interoperable magnetic field wireless charging systems that support the widespread adoption of electric vehicles and advance sustainable transportation ecosystems.