Abstract：The conventional perturbation and observation(P&O) method is widely used in the photovoltaic array maximum power point tracking system due to its succinctness and high tracking efficiency. However, the excellent dynamic response and stable performance of the P&O algorithm is difficult to achieve synchronously due to adopting fixed perturbation step size. An improved P&O algorithm with constant-voltage-start and variable step size is proposed in this paper. The contrastive experimental results of the improved and conventional algorithm are presented to demonstrate its effectiveness.
刘邦银, 段善旭, 刘飞, 徐鹏威. 基于改进扰动观察法的光伏阵列最大功率点跟踪[J]. 电工技术学报, 2009, 24(6): 91-94.
Liu Bangyin, Duan Shanxu, Liu Fei, Xu Pengwei. Photovoltaic Array Maximum Power Point Tracking Based on Improved Perturbation and Observation Method. Transactions of China Electrotechnical Society, 2009, 24(6): 91-94.
[1] Esram T, Chapman P L. Comparison of photovoltaic array maximum power point tracking techniques[J]. IEEE Transactions on Energy Conversion, 2007, 22(2): 439-449. [2] 王飞, 余世杰, 苏建徽, 等. 太阳能光伏并网发电系统研究[J]. 电工技术学报, 2005, 20(5): 72-74, 91. [3] 吴理博, 赵争鸣, 刘建政, 等. 具有无功补偿功能的单级式三相光伏并网系统[J]. 电工技术学报, 2006, 21(1): 28-32. [4] 张超, 何湘宁. 短路电流结合扰动观察法在光伏发电最大功率点跟踪控制中的应用[J]. 中国电机工程学报, 2006, 26(20): 98-102. [5] Nicola Femia, Giovanni Petrone, Giovanni Spagnuolo, et al. Optimization of perturb and observe maximum power point tracking method[J]. IEEE Trans. on Power Electronics, 2005, 20(4): 963-973.
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