During　high-speed　operation,　the　switched　reluctance　motor　(SRM)　experiences　a　significant　counter　electromotive　force,　leading　to　slow　changes　in　excitation　coil　current,　subsequently　resulting　in　a　reduction　in　the　motor’s　efficiency　and　output　capacity.　To　address　these　issues,　a　novel　five-level　power　conversion　circuit　and　a　simplified　system　control　architecture　for　centralized　power　control　are　proposed.　This　method　combines　a　three-level　active　front-end　with　a　five-level　power　conversion　circuit　to　form　an　AC-DC-DC　converter.　Through　a　speed　closed-loop　control,　it　directly　regulates　the　power　flow　from　the　grid　side　to　the　machine　side,　successfully　eliminating　the　need　for　a　DC　voltage　control　loop,　thus　achieving　centralized　system　control.　Additionally,　by　harnessing　the　Boost　feature　of　the　active　front-end　and　the　multi-level　drive　capability　of　the　five-level　power　conversion　circuit,　the　utilization　of　the　inductance　increase　region　is　improved,　enabling　rapid　excitation　and　demagnetization　of　the　motor.　Experimental　results　validate　the　effectiveness　of　the　proposed　method,　demonstrating　advantages　in　terms　of　efficiency,　output　capacity,　and　dynamic　performance.　©　2025　Chinese　Society　for　Electrical　Engineering.　All　rights　reserved.