光伏发电系统的新型双闭环控制算法研究  

Study on Double-Loop Control Algorithm of Photovoltaic Power Generation System

作　　者：洪巧文[1] 蔡逢煌[1] 戴永辉[1] 王武[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电源学报》2012年第4期54-58,共5页Journal of Power Supply

摘　　要：为了提高光伏发电效率和电能质量,对两级式光伏并网逆变器进行了相关研究,其电路结构由前级Boost升压和后级逆变组成。在传统的双闭环控制理论的基础上,提出了以单神经元PID为电压外环控制母线稳压和以无差拍算法控制并网逆变电流的新型控制策略。对单神经元PID和无差拍控制进行了理论分析,在PSIM软件搭建了单相两级式光伏发电系统模型。仿真和样机试验结果均证明了该控制策略的可靠性和有效性。In order to improve the efficiency of photovoltaic power generation and power quality, relevant researching for two- stage photovoltaic power generation system which contains of boost and inverter circuit was carried out. On the basis of the traditional double-loop control theory, a new style of control strategy which used single neuron PID as voltage loop to regulate bus voltage and deadbeat algorithm as inner loop to control the current of grid-connected inverter was given. Theoretical analysis of single neuron PID and deadbeat control was given. Then the model of single-phase two-stage photovoltaic power generation system was built based on the PSIM software. Simulation and prototype experimental results show the reliability and validity of the control strategy.

关 键 词：光伏发电 单神经元PID 无差拍 并网电流 

分 类 号：TM615[电气工程—电力系统及自动化]