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Study of bifurcation and chaos for photovoltaic inverter with PI controller
Author(s): 
Pages: 89-94
Year: Issue:  24
Journal: Power System Protection and Control

Keyword:  光伏逆变器离散模型动态分岔图折叠图数值仿真;
Abstract: 以PI调节下的电流控制型光伏逆变器为研究对象,采用频闪映射法推导了系统的离散模型,提出了一种能有效确定占空比的方法.将逆变器输入电压作为分岔参数,得到了系统的动态分岔图.运用折叠图的方法得到了不同分岔参数值下系统输出电流的数值仿真图,验证了所推导的离散模型的正确性.最后,通过RT-LAB半实物实验平台得到系统输出电流的实验波形,进一步验证了离散模型的正确性.将分岔与混沌研究从简单的比例调节下的逆变器推广到PI调节下的逆变器,更深入地分析了光伏逆变器中出现的非线性行为.
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