Bidirectional dual-source converter with optimised winding integration for EV charging and traction applications

This work presents the integration of traction motor windings with a bidirectional dual source converter (DSC) for electric vehicle (EV) applications, enabling both battery charging and traction motor operation through a unified power conversion platform. The proposed design eliminates bulky magnetic components by using the stator windings of an induction motor as source inductors during charging mode. The converter is validated under both inverter and rectifier modes. In rectifier mode, different stator winding configurations are evaluated experimentally to determine optimal power quality, using metrics such as total harmonic distortion (THD), power factor (PF), and input current. In inverter mode, closed-loop field-oriented control using a dSPACE 1104 platform demonstrates effective traction motor operation. Analytical modelling and experimental validation confirm the performance advantages of the DSC under various conditions. The system achieves efficient energy transfer, compact design, and improved power quality, making it suitable for an integrated EV system.