A　new　three-level　hysteresis　current　controller　for　single-phase　H-bridge　voltage　source　inverters　(VSI)　is　proposed　here.　The　proposed　hysteresis　current　controller　has　successfully　combined　the　advantage　of　the　symmetrical　unipolar　carrier-based　PWM　and　no　dead-time　effects.　Under　steady-state　conditions,　the　current　error　will　be　confined　within　the　inner　band.　When　the　commanded　current　step　changes　so　that　the　current　error　exceeds　the　outer　hysteresis　band,　the　extreme　voltage　level　is　selected　to　force　the　current　error　towards　zero　quickly.　Compared　with　the　conventional　three-level　hysteresis　current　controller,　the　proposed　hysteresis　current　controlled　single-phase　H-bridge　voltage　source　inverters　can　further　improve　the　inverter　output　current　waveform.　Simulated　and　experimental　results　have　been　given　to　demonstrate　the　validity　and　features　of　the　novel　hysteresis　current　controller　with　the　improved　switching　scheme.　©　2015　Chin.　Soc.　for　Elec.　Eng.