光伏并网逆变器转换效率能力验证样品制备与验证

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Abstract： This paper systematically elaborates on the technical scheme for the preparation of proficiency testing samples fortheconversion eficiencyof grid-connected photovoltaic inverters，coveringdesignbasis，keyparameters， structural design，as wellas the testing and evaluation of uniformity and stability. Based onthe NB/T 32004— 2018，TechnicalspecificationofPVgrid-connected inverter，and CNA-GLo03：2018，Guidanceon Evaluatingthe Homogeneityand StabilityofSamples UsedforProfciency Testing，thispaper takestheproficiencytestingsamples for conversion eficiency testing of photovoltaic grid-connected inverters as examples，specifies the key electrical parameters such as input/output voltage，current and efciency，and adopts amodularstructural design to ensure that the uniformity and stability of the samples meet the requirements of proficiency testing.

Keywords： photovoltaic grid-connected inverters; conversion eficiency; proficiency testing; sample preparation; uniformity;stability

0引言

光伏并网逆变器作为光伏系统能量转换的核心单元，其转换效率不仅是评估发电性能与经济效益的关键技术指标，也是推动产业高质量发展的核心要素。（剩余5283字）