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The world’s first wireless electric road charging an e-bus and an e-truck

SmartRoad Gotland, the E-road consortium led by Electreon AB, a wholly owned subsidiary of Electreon Wireless, has commenced the process of building its demonstration road in Sweden.

The project, hinted earlier this year, is a kind of proof of concept that is expected to demonstrate the system and maybe open a way for commercialisation.

Over a period of three years, a prototype electric truck (from early 2020) and electric bus (before summer 2020) will be able to take power/charge while driving over a distance of 1.6 km (1 mile) out of a 4.1 km (2.5 miles) route between the airport and city center of Visby.

“Electric road system (ERS) supports electric power transfer to vehicle while in motion and have great potential to decarbonise the transport sector and to increase energy efficiency with a reduced need of batteries. Smartroad Gotland is supported and funded by the Swedish Road Administration and is led by ElectReon AB, a Swedish subsidiary of the Israeli company ElectReon Wireless. The goal of the project is to prove that ElectReon’s technology is ready for commercialisation and to provide decision makers with knowledge necessary for large-scale ERS deployment.”

“Wireless ERS is based on coils installed below the road surface and transfer energy to a receiver that can be mounted on all types of electric vehicles such as trucks, buses, vans, and passenger cars, enabling them to charge on the go and use minimal batteries.

The installation deployment process is simple: a 10cm deep trench is created in the middle of the road lane in which copper coils embedded in rubber are placed and then the road is repaved with asphalt. Representatives from several countries are present on Gotland to evaluate the process as they consider a future deployment of the technology.”

How it works

The system consists of three key elements; the Coil transferring energy to a Receiver on the vehicle and a Management Unit connected to the grid controlling the process. The Management Unit is connected to the electric grid and transfer energy to copper coils buried 8 cm below the lane when a valid vehicle is exactly above. The energy is wirelessly transferred from the coil to a receiver mounted underneath the vehicle. The system makes sure only valid vehicles receive energy and keeps track of how much in order to bill the right customer. A passenger car needs one receiver and a 40-ton truck would use five, but utilising the same infrastructure.

To enable the mission-critical knowledge transfer to the Swedish Transport Administration, Smart Road Gotland will deploy a fully functional public shuttle service and test bed through a 1.6 km long electric road as part of the total route of 4.1 km between the airport and town center of Visby on the idyllic island of Gotland, an eco-municipality in the middle of the Baltic Sea.

This public-private initiative, based on Electreon’s leading technology, will be the first in the world to charge inductively both an electric truck and a bus while in full motion. The electric truck will be test-driven by a professional in varied seasonal conditions to ensure that the system is ready for large-scale projects on highways.

As an integral strategic step towards implementing the Swedish government’s national roadmap for electric road systems, Smart Road Gotland will create a vital learning curve for the authority.

​Long haul heavy truck fleets benefit significantly from the Electreon solution since no heavy and costly batteries, nor stops for charging, are needed. This optimal solution enables installation of electric road systems without the environmental impact (benefits are both physical and visual) of a conductive system.

​The project is financed by the the Swedish Transport Administration (Trafikverket) as part of the electric road roadmap of the Swedish government to reduce CO2 emissions from heavy transportation.

After acquiring relevant ERS demonstration results, the Swedish Transport Administration can evaluate the potential for larger scale electric road investments.

​About the technology

The technology is installed under the road and enables a shared infrastructure that significantly reduced the need to charge the vehicle’s battery during day/overnight and decreases the size of the battery, It can support any type of EV – Buses, Trucks, passengers and is especially suitable for autonomous EVs. Electreon is a global leader in the field due to deep technological capabilities and its success in making the technology cost effective, durable and efficient.

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