A　novel　single　phase　voltage　mode　quasi-Z-source　inverter　circuit　topology　and　control　strategy　were　proposed.　The　circuit　topology,　single　polarity　SPWM　control　strategy　with　energy　storage　capacitor　voltage　feed　forward　control　of　impedance　network　and　feedback　control　of　output　voltage,　characteristic　of　steady　principle　of　this　inverter　were　deeply　investigated,　and　the　important　conclusions　and　the　design　criteria　of　key　circuit　parameters　of　this　inverter　were　obtained　in　the　paper.　This　kind　of　inverter　is　cascade　composed　of　impedance　network　with　high　voltage　transmission　ratio,　single　phase　inverting　bridge　and　single　phase　filter.　The　impedance　network　with　high　voltage　transmission　ratio　is　composed　of　energy　storage　inductance　L0　and　two　DLCC　type　with　two　ports　impedance　network　units　connected　in　cascade.　The　theoretical　analysis　and　the　experimental　results　have　demonstrated　that　this　kind　of　inverter　has　the　advantages　of　simple　topologies,　high　voltage　transmission　ratio,　high　power　density,　low　output　voltage　distortion,　high　reliability,　flexible　input　voltage,　low　cost,　wide　application　prospect　and　so　on.　©,　2015,　The　editorial　office　of　Transaction　of　China　Electrotechnical　Society.　All　right　reserved.