Digital　control　of　the　virtual　synchronous　generator　contributes　to　improve　the　stability　of　the　system.　The　discrete-time　model　of　voltage　source　inverter　with　LC　filter　is　analyzed　and　implemented　in　this　paper.　Then　this　paper　designs　the　VSG　control　parameters　in　the　discrete　domain,　considering　a　digital　control　method　of　seamless　transformation　without　PLL.　The　experimental　results　verify　the　effectiveness　of　the　proposed　method.　©　2019　EPE　Association.