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电网技术  2014 

光伏并网电流源逆变器扰动电阻最大功率跟踪策略

DOI: 10.13335/j.1000-3673.pst.2014.12.005, PP. 3300-3304

Keywords: 光伏并网,电流源逆变器,扰动观察法,扰动电阻,最大功率跟踪

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Abstract:

为提高系统的能量利用率和运行可靠性,提出了一种用于电流源逆变器(currentsourceinverter,CSI)光伏并网系统最大功率跟踪(maximumpowerpointtracking,MPPT)方法。该方法通过扰动电阻代替传统扰动观察法中扰动电流实现CSI光伏系统的MPPT,有效避免了传统扰动电流MPPT法存在的最大功率点右侧电流易于失控和功率瞬时跌落的问题。实验结果表明,该扰动电阻MPPT(perturbingresistanceMPPT,PR-MPPT)法应用于CSI光伏并网系统,能够有效实现系统的最大功率运行。

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