Abstract
An electric road system (ERS) enables transfer of electric energy to a moving vehicle, making it possible to reduce the capacity—and cost—of the battery and the need for static chargers. A conductive electric road allows for relatively low complexity whilst being able to provide high levels of power. When utilising a conductive electric road, safety precautions must be considered with regard to isolation between the charging supply (the electric road) and the vehicle’s traction voltage system (TVS), since no protective Earth connection can be guaranteed. Isolation can be achieved by separating the two systems galvanically or by double isolating the entire TVS and all equipment connected to it on-board the vehicle. This study used the experimental results from a previous paper to model and evaluate three different electric powertrains/charger topologies, including a novel integrated design fulfilling the required safety features. The models were used in a full vehicle model and further investigated in a city bus scenario in terms of how charging performance, energy consumption and battery ageing are affected by the aforementioned charging topologies and electric road characteristic. We discovered that charging topology has a strong influence on energy consumption, and that electric road characteristics have a strong influence on battery ageing.
Highlights
Electrification is an important factor in reducing the emissions related to the road transport sector
In order to evaluate how the different energy transfer solution” (ETS) perform with different ratings of traction and charging power, electric road system (ERS) parameters and battery capacities, a multidimensional matrix was defined according to Table 3: every combination was simulated using the drive ers cycle, system components and control methods described in Sections 3 anders
The energy consumption and the battery ageing were the main outcomes of interest from this evaluation
Summary
Electrification is an important factor in reducing the emissions related to the road transport sector. With ERS as the energy supply for long trips, the battery capacities of road vehicles could be reduced by 50–80%, compared to a solution with bigger batteries and a fast charging infrastructure, which would have a profound impact on the societal cost of electro-mobility [6,7]. Several governments, such as Germany [8] and Sweden [9], have acknowledged this opportunity; and Sweden in particular, has demonstrated four different modern ERS technologies on public roads, during the period 2015–2022, to build experience. Both inductive (wireless) and conductive ERS solutions have been proposed, and several solutions exist on different levels of technical readiness [10]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
