Z源逆变器并网应用研究的中期报告摘要：本文介绍了Z源逆变器的并网应用研究进展情况，包括其基本工作原理、拓扑结构和控制策略。从电路结构上分析了Z源逆变器的特点和优势，研究了其在太阳能光伏系统和风力发电系统中的应用。提出了一种基于Z源逆变器的多级串联太阳能光伏发电系统拓扑结构，研究了其并网控制策略。在风力发电系统中，通过控制Z源逆变器的输出电压，实现了对涡轮风能的跟踪和调节。最后，进行了仿真实验和实验验证，证明了Z源逆变器在太阳能光伏和风力发电系统中具有较好的性能和应用前景。关键词：Z源逆变器；并网应用；拓扑结构；控制策略；性能分析；应用前景。Abstract：ThispaperintroducestheresearchprogressofZ-sourceinverteringrid-connectedapplications,includingitsbasicworkingprinciple,topologystructureandcontrolstrategy.ThecharacteristicsandadvantagesofZ-sourceinverterareanalyzedfromtheperspectiveofcircuitstructure,anditsapplicationinsolarphotovoltaicandwindpowersystemsarestudied.Amulti-stageseriessolarphotovoltaicpowergenerationsystemtopologystructurebasedonZ-sourceinverterisproposed,anditsgrid-connectedcontrolstrategyisstudied.Inthewindpowergenerationsystem,thetrackingandadjustmentoftheturbinewindenergyarerealizedbycontrollingtheoutputvoltageoftheZ-sourceinverter.Finally,simulationexperimentsandexperimentalverificationarecarriedouttoprovethatZ-sourceinverterhasgoodperformanceandapplicationprospectsinsolarphotovoltaicandwindpowersystems.Keywords:Z-sourceinverter;grid-connectedapplication;topologystructure;controlstrategy;performanceanalysis;applicationprospects.