Electric propulsion system for a vehicle

Abstract

The invention relates to an electric propulsion system () for a vehicle (), said system comprising a first electrical machine () and a second electrical machine () for providing propulsion to said vehicle, characterized in that said system further comprises an electrically isolated coupling assembly () configured to provide electrical isolation between said first and said second electrical machines; a first bidirectional DC/AC converter () disposed in a first electrical connection () extending from the first electrical machine; a second bidirectional DC/AC converter () disposed in a second electrical connection () extending from the second electrical machine; a switch assembly () connected via at least one of the bidirectional DC/AC converters to at least one of the first and second electrical machines and further connected to an onboard energy storage system (); and wherein said switch assembly is configured to connect at least one of the first electrical machine and the second electrical machine to either the onboard energy storage system () or to an externally supplied power source (), thereby said switch assembly being configured to set the electric propulsion system in a number of operational modes.