Répartition des pertes dans une chaîne de traction utilisant un onduleur à ponts en H cascadés avec batteries intégrées

This paper sets out to determine the sources of loss of a cascaded H-bridge inverter with integrated batteries (CHB-IB) when used to power a vehicle electric traction machine as part of the PIA IBIS project. A macroscopic energetic representation (EMR) of the system is carried out in order to dissociate the different elements of the system. Loss models are associated with each element to simulate the electromechanical behavior of the drive train. Simulation results are presented as a function of machine torque and speed. An analysis of these results is proposed, and the main source of losses is highlighted. Keywords-drivetrain, multilevel inverter, cascaded H-bridges, integrated batteries, loss model, macroscopic energy representation.