A dual-port integrated switched reluctance motor power converter for electric vehicles with flexible braking and energy recovery

As environmental protection increasingly becomes a global focus, new energy vehicles have gradually emerged as a rising star in the modern transportation sector. They not only represent technological innovation but also carry the hope of achieving sustainable mobility. This paper proposes a novel dual-port integrated power converter, consisting of a front-end circuit and a traditional asymmetric half bridge converter. By changing the operating state of the front-end circuit's switch transistors, different operating modes can be switched. In the motoring state, there are single-power supply mode and hybrid power supply mode, and the converter is reconfigured into a five-level converter; in the regenerative braking mode, there are moderate braking mode and severe braking mode, and energy recovery can be achieved in both modes, with the converter being reconfigured into a four-level converter. The power converter proposed in this paper can accommodate wide speed range regulation for both electric and braking operations, while also recovering energy from regenerative braking. It has been simulated and verified on a three-phase 12/8 SRM, confirming its practicality and effectiveness.