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《Electric Engineering》 2018-15
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Application Research on Fuzzy Control Based on Exponential Sub-domain in Photovoltaic Grid Connection

GUO Wei;JIN Chunjie;SU Ying;WU Ping;XU Wu;REN Yilong;School of Electrical and Information Engineering,Yunnan Minzu University;State Grid Shanxi Electric Power Company,Maintenance Branch;  
In view of the problems of inadequate precision of PO method in MPPT of PV grid connected system and the sharp change of external conditions can lead to misjudgement.This paper puts forward the idea of using the exponential sub-domain to adjust the disturbance step.A double closed loop control system is established by using Matlab/Simulink.Meanwhile,the fuzzy control algorithm is also adopted to carry out the simulation test,to verify its feasibility.The results show that the elapsed time reduces by 0.03 swhen the voltage and current reach a relatively stable state,and 0.05 s is reduced when the active and reactive power reach a relatively stable state.
【Fund】: 国家自然科学基金项目 智能电网无线HART网络多层多源汇聚关键技术研究(编号61461055);; 云南省科技厅项目 微型细胞式光伏并网逆变器能量转换协同机制研究(编号2017FD120)
【CateGory Index】: TM615
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