Arcless　intelligent　DC　contactor　based　on　IGBT　hybrid　connection　closed-loop　control　strategy　is　proposed　to　solve　the　problem　of　contact　burning　loss　caused　by　breaking　arc　of　mechanical　switches.　The　arcless　breaking　of　DC　contactor　is　realized　in　the　way　of　single　tube　IGBT　hybrid　connection,　which　avoids　the　defects　of　large　volume　and　high　cost　of　IGBT　modules.　Based　on　the　corresponding　buffer　circuit,　the　static　current　balance　closed-loop　control　strategy　is　adopted　to　solve　the　problem　of　voltage　imbalance　and　current　imbalance　caused　by　IGBT　hybrid　connection,　which　realizes　the　high　utilization　rate　of　IGBT　and　guarantees　the　reliable　arcless　breaking　and　stability　of　system.　On　this　basis,　the　relevant　constraint　equations　of　the　buffer　circuit　parameters　are　obtained　by　theoretical　analysis,　which　provides　the　theoretical　basis　for　the　circuit　optimization　and　further　reduces　the　cost　and　volume　of　the　control　module.　Experimental　results　show　that　the　proposed　control　scheme　is　simple　and　effective,　and　has　good　versatility.　©　2019,　Electric　Power　Automation　Equipment　Press.　All　right　reserved.