Abstract
Increase of non-renewable energy consumption and CO2 emissions has brought heavy burdens to our planet. Heavy-duty vehicles as a large energy consumer benefit a lot from platooning due to reduced air drag. Comparing to ICE trucks, electric trucks can gain more energy savings from platooning while also reducing CO2 emissions. This paper explores the energy consumption of electric HDV platooning under highway situations and proposes an adaptive downhill coasting speed method with regenerative braking. Simulations show that electric HDV platooning can reach at most 33.4% energy savings with our proposed adaptive coasting speed profile. With a sacrifice of 22.2% travel time, the energy savings can be further increased to 49.3%.
Highlights
Due to the increasing number of vehicles all over the world, the amount of nonrenewable energy consumption and CO2 emissions has increased drastically, which has brought heavy burdens to our planet
22.2% travel time, the energy savings can be further increased to 49.3%
(b)and and(c)(c)decreased decreased since relative energy energy savings savings with since thethe average speeds decrease compared to the case without regenerative braking
Summary
Due to the increasing number of vehicles all over the world, the amount of nonrenewable energy consumption and CO2 emissions has increased drastically, which has brought heavy burdens to our planet. This work considers the HDVs in a platoon to be a group and changes their speeds at certain road points together instead of maintaining a specific distance for each individual They achieved a 14% energy reduction in a downhill segment. With the reduction of air drag in a platoon of electric HDVs, coasting speeds can be realized that fall in the range of acceptable highway speeds. This facilitates the implementation of downhill coasting speeds that adapt to different road grades in order to save energy. HDV platoon to adaptively change coasting speeds based on different road grades and highway speed limits, which can help the platoon to realize more energy savings.
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