Conductive dynamic charging of electric vehicles will be tested in Sweden over the next three years.
Sweden is exploring new ways of powering electric vehicles while driving – the latest “EVolution Road” project is about conductive charging, through a rail embedded in the road.
While the vehicle will connect to the rail (5 cm high and 30 cm width), the infrastructure will be able to provide enough power for driving and also charge the battery a little bit.
The demonstration section of one-kilometer will be installed in the city of Lund by Elonroad, in partnership with the Faculty of Engineering at the University of Lund. The test electric bus (technically it will be a trolleybus) for the project will be provided by Solaris.
The total cost of the three-year pilot project to be €9 million (close to $9.83 million), which is quite a lot. Tests are expected to start in 2020.
“The demonstration site is to be situated in the city of Lund in southern Sweden, where a one kilometer long section of the road will be equipped with electric rails, each of them one meter long. A specially developed pick-up aggregate will be built into a Solaris Trollino trolleybus selected for test drives. The traction batteries of the vehicle will be charged as the pick-up receiver under the trolleybus connects with the conductive rail installed in the road. Solaris will hold the responsibility of developing the technical integration between the onboard charging systems and the custom made conductive pick-up installed under the vehicle. The construction of the demo site starts in the first quarter of 2020 and the entire project will be running for three years. The total investment is worth EUR 9m and the procurer and main financier is the Swedish Transport Administration.
The road uses wireless communication to identify electric vehicles approaching and switches on the power in a one meter long segments directly underneath the vehicle. The power can only be supplied in the areas where the pick-up receivers are able to connect with the rail and receive power. In all other segments in front and behind the moving vehicles, the power will be turned off, making it safe to install this type of charging in both – cities and on highways.
Among the main advantages of this type of in-motion charging is the fact that it significantly reduces the need for large, expensive and heavy traction batteries. This in turn results in reduced weight and cost of the electric vehicle. It also allows to save time as there in no more need for regular stops for the recharge. “
We doubt that conductive dynamic charging is the right way to go as it makes roads even more expensive to build and maintain than today. The quick recharge at bus stops should be enough, especially as battery prices are decreasing.
Source: Elonroad, Solaris, Green Car Congress
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