摘要
为能有效提高光伏发电系统的最大输出功率,根据光伏电池的输出特性和数学模型,提出了一种改进型等效阻抗匹配最大功率点跟踪(MPPT)算法。该算法通过数学推导设计了扰动控制器,使系统参数具有自适应调节能力,能对系统阻抗进行精确匹配。通过数学建模和Matlab模型仿真的方法,对光伏阵列的MPPT性能进行分析,并搭建实验平台进行实验验证。研究结果表明,改进型等效阻抗匹配法具有更快的追踪速度及良好的控制精度,并使整个系统在自身参数的设置方面体现出更加优异的鲁棒性。
In order to improve the maximum output power of photovohaic power generation system, an improved equiv- alent impedance matching maximum power point tracking （MPPT） algorithm is proposed based on output characteris- tics and mathematical model of photovoltaie cells.Through the method of mathematical and Matlab model simulation, the MPPT performance of photovohaic array is analyzed, and the experimental platform is built to verify the perfor- mance of system.The research results show that the improved equivalent impedance matching method has a faster tracking speed and a good control precision, and makes the whole system more excellent robustness to its parameters. Keywortl
作者
张海洲
郑崇伟
毕大强
张正江
ZHANG Hai-zhou ZHENG Chong-wei BI Da-qiang ZHANG Zheng-jiang(National-local Joint Engineering Laboratory of Electrical Digital Design Technology, Wenzhou University, Wenzhou 325035, China)
出处
《电力电子技术》
CSCD
北大核心
2017年第9期96-98,102,共4页
Power Electronics
基金
国家自然科学基金(51207112)
浙江省自然科学基金(LQ14F030006)~~
关键词
光伏发电系统
最大功率点跟踪
阻抗匹配
photovoltaic power generation system
maximum power point tracking
impedance matching
