Summary

Inductive charging is a wireless charging technology that will be used with electric vehicles (EVs) in the near future. This offers many advantages over traditionally and other currently available EVs, such as charging whilst in motion, smaller batteries, high autonomy, and high-efficiency power transmission, all leading to the reduction of carbon dioxide (CO2) and fossil fuel consumption. This project aims to advance inductive power transfer (IPT) for the charging of EVs by developing metrology techniques for measuring IPT efficiency as well as ensuring reliable demonstration of compliance with existing safety standards for human exposure.

Charging an electric vehicle

Conductive Charging

Charging stations for electric vehicles (EV’s), plug-in EV’s, and plug-in hybrids are the state of the art in charging electric vehicles. Thousands of stations have been already installed in the EU, USA, China and Japan and are likely to grow rapidly in the coming years.

Static inductive charging

Some companies and some car manufacturers have begun to make, and some sell, solutions for static inductive power transfer (IPT). This technology has a total cost of a few thousand euros and is set to spread in the coming years.

Dynamic Inductive Charging

Dynamic inductive power transfer (DIPT), that is charging while driving, is still in its embryonal stage and many efforts have been made in order to move towards an assessment and standardization of the technology. Demonstrators and research projects are numerous, but this technology remains for the next future.

Measuring IPT to vehicles

Inductive charging of electric vehicles, especially while driving, represents a step forward towards a new transport model. A correct measurement of the transmitted power from the grid to the infrastructure and from the infrastructure to the vehicle are central issues in order to deploy this technology.

Safety is a critical point and needs serious consideration for both humans as well as animals that could be in close proximity to charge pads. Traceable measurements of electro-magnetic field (EMF) near charging coils are needed, at ground level and on- board, requiring a demanding calibration of the measurement instruments.

Advanced Bioelectromagnetic Models

The project team will perform extensive computer simulations involving numerous scenarios of static and dynamic vehicle IPT structures for different systems, concerning electric quantities behaviour and towards the exposure of the vehicle passengers and bystanders.