Energy Management Strategy Optimization for Application of an Electrical Variable Transmission System in a Hybrid Electric City Bus

The present study assesses utilization of an Electrical Variable Transmission system for application in the drivetrain of a hybrid electric city bus. To this end, first the corresponding modeling for a hybrid bus topology is performed in presence of a gearbox. Secondly, two optimization-based energy management strategies (EMS) coupled into a Rule-based EMS are examined. The corresponding investigations are performed towards achieving optimized EMSs for efficient power distribution between the drivetrain components. The main outcome of this research addresses improving the fuel consumption while sustaining the State of Charge of the battery for the studied city bus.