Based　on　the　state-feedback　linearization　and　the　optimal　control　of　quadratic　type,　a　new　nonlinear　control　strategy　for　single-phase　inverters　was　proposed.　The　affine　nonlinear　model　for　single-phase　full　bridge　inverters　was　established.　By　using　the　method　for　exact　linearization　of　state　feedback,　the　nonlinear　state　feedback　expression　was　derived,　and　the　linearization　of　nonlinear　systems　was　realized.　According　to　the　passivity-based　control　i-dea,　a　performance　index　of　quadratic　form　was　put　forward,　and　the　design　of　the　state　feedback　coefficient　was　optimized　by　the　quadratic　form　optimal　control.　The　proposed　control　system　has　the　advantages　of　low　cost,　simple　structure,　and　easy　to　implement　by　idgital　signal　processing,　which　makes　an　inverter　system　have　the　advantages　of　no　steady　state　error,　strong　robustness　to　load　disturbance,　and　small　harmonic　distortion　rate　in　output　voltage.　©　2015,　Inst.　of　Scientific　and　Technical　Information　of　China.　All　right　reserved.