光伏逆变电源的并网策略与自适应控制  

Grid connected strategy and adaptive control of photovoltaic inverter

作　　者：方如举[1] 

机构地区：[1]许昌学院电气信息工程学院,河南许昌461000

出　　处：《可再生能源》2016年第2期190-195,共6页Renewable Energy Resources

基　　金：河南省科技厅科技攻关项目(162102310501);河南省教育厅科技攻关项目(16A470023)

摘　　要：针对光伏并网逆变器在不同环境下的工作需求,提出一种基于极点配置的自适应调整控制参数的控制策略。分析了基于电容电流反馈的逆变器内环传递函数形式以及特征。分析了自校正PI控制器的参数根据外界环境实现的推理过程。构建了由电压外环、电流中环以及电容电流反馈的内环并网逆变器控制模型。最后,通过仿真以及实验结果验证了文章控制方案的正确性。According to the requirements of different environments where photovoltaic grid- connected inverter operates,an adaptive control strategy based on pole assignment and actively adjusting the control parameters is proposed. After analyzing the form and characteristics of the inner loop transfer function with the feedback of capacitor current,derivation process of the adaptive PI controller parameters to adapt to the external environment changes. The control model including voltage outer loop,current loop and capacitor current feedback is constructed. Simulation and experimental results verify that the proposed control scheme is correct and feasible.

关 键 词：并网逆变器 电容电流反馈 自适应控制 传递函数 

分 类 号：TK614[动力工程及工程热物理—生物能]