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光伏电池与前置电容式电流型MPPT变换器的接口稳定性研究

, PP. 135-141

Keywords: 光伏并网系统,电流型变换器,最大功率点跟踪,级联系统,接口稳定性

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Abstract:

从级联系统的角度,分析了前置电容式电流型MPPT变换器的光伏接口稳定条件以及控制器参数设计准则。本文首先提出电流源-负载级联系统的接口稳定性判据;分析了光伏电池小信号输出阻抗和接口电压反馈控制时前置电容Boost变换器的闭环输入阻抗;然后基于提出的稳定性判据,推导出该变换器的光伏接口电压闭环控制稳定的条件,并据此得出控制参数设计准

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