Split converter-fed SRM drive for flexible charging in EV/HEV applications

Yihua Hu, Chun Gan, Wenping Cao, Chushan Li, Stephen J. Finney

Research output: Contribution to journalArticlepeer-review


Electric vehicles (EVs) and hybrid EVs are the way forward for green transportation and for establishing low-carbon economy. This paper presents a split converter-fed four-phase switched reluctance motor (SRM) drive to realize flexible integrated charging functions (dc and ac sources). The machine is featured with a central-tapped winding node, eight stator slots, and six rotor poles (8/6). In the driving mode, the developed topology has the same characteristics as the traditional asymmetric bridge topology but better fault tolerance. The proposed system supports battery energy balance and on-board dc and ac charging. When connecting with an ac power grid, the proposed topology has a merit of the multilevel converter; the charging current control can be achieved by the improved hysteresis control. The energy flow between the two batteries is balanced by the hysteresis control based on their state-of-charge conditions. Simulation results in MATLAB/Simulink and experiments on a 150-W prototype SRM validate the effectiveness of the proposed technologies, which may provide a solution to EV charging issues associated with significant infrastructure requirements.
Original languageEnglish
Pages (from-to)6085-6095
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Issue number10
Publication statusPublished - Oct 2015

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