A　parallel　inverter　based　on　the　duty　cycle　extended　active　clamp　forward　mode　inverter　with　high　frequency　pulse　DC　link　is　proposed.　The　circuit　topology,　steady　principle,　control　strategy　of　three-state　discrete　pulse　modulation　(DPM)　hysteresis　current,　current-sharing,　and　criterions　of　the　key　circuit　parameters　of　the　parallel　inverter　are　investigated.　The　parallel　inverter　is　constituted　of　the　N　duty　cycle　extended　active　clamp　forward　mode　high　frequency　pulse　DC　link　inverter　modules　with　common　outer　voltage　regulator　and　separately　inner　current　regulator.　A　prototype　of　3　kVA　27VDC/115V400HzAC　parallel　inverter　has　excellent　performances　such　as　small　bulk,　lower　weight,　high　conversion　efficiency,　high　steady　precision,　fast　dynamic　response,　wide　range　input　voltage,　good　output　voltage　waveforms,　good　current-sharing　effect,　strong　ability　for　different　nature　load,　and　strong　over-load　and　short-circuit　ability.　The　parallel　inverter　can　be　used　in　large　power　inversion　fields.