基于准DPC的LCL型光伏并网逆变器的控制策略
焦晓雷,顾乃威,蔡光德,邓伟,朱恺之
摘要(Abstract)：
针对三相LCL型光伏并网逆变系统中,直接功率控制(DPC)开关频率不固定、电流闭环控制动态响应慢的缺点,本文提出一种内环采用电流控制、外环采用功率控制的准DPC方法,兼顾DPC和电流控制的优点,且具有动态响应快、开关频率固定和电流正弦度高的优点。通过在Matlab/Simulink中搭建控制系统仿真模型,结果表明该控制策略具有一定的可行性。
关键词(KeyWords)： LCL;并网逆变器;光伏;电流控制;准DPC
基金项目(Foundation):
作者(Author): 焦晓雷,顾乃威,蔡光德,邓伟,朱恺之
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