一种改进扰动观测法在光伏M中应用.pdf

Journal of Electrical Engineering 电气工程, 2017, 5(1), 1-5 Published Online March 2017 in Hans. /journal/jee /10.12677/jee.2017.51001 An Improved Perturbation and Observation Used in Maximum Power Point Tracking Control of Photovoltaic Power System Qianqian Xu, Jing Hui Key Laboratory of Advanced Process Control for Light Industry, Ministry of Education, Jiangnan University, Wuxi Jiangsu rd th th Received: Feb. 23 , 2017; accepted: Mar. 13 , 2017; published: Mar. 16 , 2017 Abstract The output of the photovoltaic array is nonlinear. In order to improve the efficiency of solar power generation, the maximum power point tracking is needed. Traditional disturbance observation method is widely used, but it is difficult to balance the tracking accuracy and response speed. When the light changes drastically, the traditional method may produce a false judgment. Aiming at these problems, a new method is proposed. The improved algorithm can search the maximum power point quickly, and restrain the fluctuation near the maximum power point. The simulation of photovoltaic system is carried out by MATLAB, and the effectiveness of the improved algorithm is proved. Keywords Photovoltaic Array, Maximum Power Point Tracking, Perturbation and Observation Method, Variable Step Size 一种改进的扰动观测法在光伏MPPT中的应用 许倩倩，惠 晶 江南大学轻工过程先进控制教育部重点实验室，江苏 无锡 收稿日期：2017年2月23 日；录用日期：2017年3月13 日；发布日期：2017年3月16 日 摘 要 光伏阵列的输出功率是非线性的，为提高太阳能发电的效率，需要进行最大功率点追踪。传统的扰动观 文章引用: 许倩倩, 惠晶. 一种改进的扰动观测法在光伏MPPT 中的应用[J]. 电气工程, 2017, 5(1): 1-5. /10.12677/jee.2017.51001 许倩倩，惠晶 测法应用较为广泛，但难以兼顾跟踪精度和响应速度，在光照剧烈变化时会出现误判。针对这些不足， 本文提出一种变步长阀值有哪些信誉好的足球投注网站法。改进后的算法能快速有哪些信誉好的足球投注网站到最大功率点，同时抑制在最大功率点附近