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CN104953948A 一种光伏逆变器动态MPPT效率测试的误差修正方法 无效 - 驳回 转让 复审申请

一种光伏逆变器动态MPPT效率测试的误差修正方法
摘要：
本发明提出一种光伏逆变器MPPT效率测试的误差修正方法，所述方法包括：根据被测光伏逆变器容量和匹配组件类型，选择在STC条件下光伏仿真模拟器输出的P-V曲线模型；以P-V曲线模型为基础，根据开路电压UOC；STC、短路电流ISC；STC与辐照度G之间的关系，获得辐照度变化时光伏阵列模拟器输出的I-V曲线；根据EN50530标准中对动态MPPT测试辐照度的要求，获取光伏阵列模拟器输出的I-V曲线；构建光伏逆变器动态MPPT效率测试平台，获取光伏阵列模拟器输出的I-V曲线测试数据，并上传至上位机；利用所述上位机修正其误差；从而实现了光伏逆变器动态MPPT效率的精细、准确测试。
摘要（英）：

The invention provides an error correction method for a MPPT (maximum power point tracking) efficiency test on a photovoltaic inverter. The method comprises steps as follows: selecting a P-V curve model output by a photovoltaic simulator under an STC condition according to the capacity of the to-be-tested photovoltaic inverter and the type of a matched assembly; on the basis of the P-V curve model, acquiring an I-V curve output by a photovoltaic array simulator during change of irradiance according to the relation among open-circuit voltage UOC;STC, short-circuit current ISC;STC and irradiance G; acquiring an I-V curve output by the photovoltaic array simulator according to the requirement of the EN50530 standard for dynamic MPPT test irradiance; constructing a dynamic MPPT efficiency test platform for the photovoltaic inverter, acquiring test data of the I-V curve output by the photovoltaic array simulator, and uploading the data to an upper computer; correcting errors by the upper computer. Thus, the fine and accurate test on the dynamic MPPT efficiency of the photovoltaic inverter is realized.

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