Electrically Propelled Semi-trailer: Dimensioning and Packaging of an Electrical Powertrain in a Semi-trailer

Abstract

This thesis set out to dimension an electrical powertrain and package it in an existing chassis. The thesis started with benchmarking an existing E-Trailer together with the responsible people. The pre-study started with a market analysis of other companies to better understand what they were developing. But to get a deeper understanding of what the companies were developing the market analysis transformed into a patent search. The pre-study resulted in a list of requirements for the E-Trailer. To find out what dimensions the motor needed to execute functions such as increasing the startability and reversing only using the trailer’s powertrain several hand calculations were made. To optimise the powertrain for fuel efficiency on different routes several drive cycles simulations were made. Once the dimensions of the motor and the batteries were decided it was time to select components that were available or soon to be available within Volvo Group. When the components were selected a rough CAD assembly was created to find out if the powertrain would work in the special chassis. The E-Trailer is expected to save up to 42% fuel compared to a conventional setup on a predetermined route.