A Reconfigurable Totem-Pole Based Integrated On-Board Charger with Reduced Current Sensors for SRM-Based Electric Vehicles
Year: 2026
Type: article
Abstract: This paper presents a reconfigurable totem-pole based integrated onboard charger (TP-IOBC) utilizing a switched reluctance motor (SRM) drive system designed for both driving and battery charging applications in electric vehicles (EVs). In driving mode, the TP-IOBC functions as a modified Miller converter. In contrast, during charging mode, it is reconfigured into an totem-pole power factor correction (TP-PFC) circuit, which enables high efficiency AC/DC conversion with a unity power factor. By reutilizing the SRM windings as charging inductors, the proposed system eliminates the need for additional passive components, thereby reducing hardware complexity. The TP-IOBC employs only two current sensors to measure phase currents across all operating modes, further simplifying the control structure. The system achieves zero charging torque (ZCT) at eight rotor positions, limiting the maximum rotor displacement required to reach the nearest charging position to 3.75° mechanical under rotor position deviations, thereby ensuring torque free charging without mechanical locking. Simulation and experimental results validate the proposed TP-IOBC and confirm its effectiveness in improving the efficiency and functionality of SRM-based EV drive systems.
Authors: Gautam Kumawat, Abdul Azeem, Saifullah Payami
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
OpenAlex ID: W7214768664