A　no-arc　control　strategy　of　AC/DC　contactor　based　on　hybrid　commutation　technology　was　proposed　to　solve　the　problem　of　contact　burn　caused　by　switching　arc　of　large　capacity　AC/DC　contactor.　The　control　strategy　combines　the　advantages　of　forced　zero　crossing　and　natural　commutation　techniques,　and　combined　with　contact　signal　closed-loop　feedback　control,　which　solves　the　problem　that　the　zero-voltage　recovery　time　is　short　and　the　control　strategy　is　affected　by　the　decentralization　of　the　mechanism.　The　control　strategy　has　achieved　contact　system　AC/DC　universal　and　no-arc　breaking,　and　it　is　suitable　for　different　electromagnetic　mechanisms.　The　new　circuit　topology　scheme　was　proposed,　and　the　optimal　control　parameters　were　obtained　by　theoretical　analysis　and　calculation,　and　achieved　the　contact　current　with　the　fastest　zero-crossing　rate　and　100%　reverse　current　utilization.　The　working　principle　of　the　proposed　control　strategy　was　analyzed　by　simulations　and　experiments　and　the　effectiveness　was　verified.　©　2019　Chin.　Soc.　for　Elec.　Eng.