Abstract：Maximum power point tracking (MPPT) can significantly increase conversion efficiency of photovoltaic (PV) cells. A fast maximum power point tracking (MPPT) algorithm is proposed in the paper. According to the derivative of power function expressed by voltage is zero at the maximum power point, getting the relation equation about Pmax and Umax, which is called maximum-power curve equation. The maximum power point is the intersecting point of the PV cells characteristic curve and the maximum-power curve. Searching the intersecting point with variable step on the two dimensional plane about power and voltage, finding the intersecting point means tracked the maximum power point. Simulation results validate that the proposed method can search the maximum power point of PV cells quickly and precisely, and eliminate the oscillation while operating at the maximum power point and improve the system stability.
李晨霞, 杨洪耕, 王元驰. 用于光伏系统的一种最大功率跟踪方法[J]. 电气技术, 2014, 15(05): 26-30.
Li Chenxia, Yang Honggeng, Wang Yuanchi. One Method of Maximum Power Point Tracking (MPPT) for Photovoltaic System. Electrical Engineering, 2014, 15(05): 26-30.
[1] 何人望,邱万英,吴迅,等.基于PSIM的新型扰动观察法的MPPT仿真研究[J]. 电力系统保护与控制, 2012, 40(7): 56-59. [2] KJAER S B. Evaluation of the “Hill Climbing” and the “Incremental Conductance” maximum power point trackers for photovoltaic power systems[J]. IEEE Transactions on Energy Conversion, 2012, 27(4): 922-929. [3] 张小莲, 李群, 殷明慧, 等. 一种引入停止机制的改进爬山算法[J]. 中国电机工程学报, 2012, 32(14): 128-134. [4] 董密, 杨建, 彭可, 等. 光伏系统的零均值电导增量最大功率点跟踪控制[J]. 中国电机工程学报, 2010, 30(21): 48-53. [5] HSIEH G C, HSIEH H I, TSAI C Y, et al. Photovoltaic Power-Increment-Aided Incremental-Conductance MPPT with two-phased tracking[J]. IEEE Transactions on Power Electronics, 2013, 28(6): 2895-2911. [6] 王义飞. 吴伟, 张皞华, 等. 改进型变步长光伏最大功率点快速跟踪[J]. 上海大学学报（自然科学版）2011, 17(3): 249-252. [7] 原敬磊, 张建成. 一种改进的变步长电导增量光伏电源MPPT控制方法[J]. 电网与清洁能源, 2012, 28(1): 75-79. [8] 赖东升, 杨苹. 一种应用于光伏发电MPPT的变步长电导增量法[J]. 电力电子技术, 2012, 46(3): 40-42. [9] PAN C T, CHEN J Y, CHU C P, et al. A fast maximum power point tracker for photovoltaic power systems[C]. Industrial Electronics Society, 1999. IECON '99 Proceedings The 25th Annual Conference of the IEEE, 1999: 390-393. [10] MUTOH N, OHNO M, INOUE T. A method for MPPT control while searching for parameters corresponding to weather conditions for PV generation systems[J]. IEEE Transactions on Industrial Application, 2006, 53(4): 1055-1065. [11] 高志强, 王建赜, 纪延超, 等. 一种快速的光伏最大功率点跟踪方法[J]. 电力系统保护与控制, 2012, 40(8): 105-109. [12] 邱培春, 葛宝明, 毕大强. 基于扰动观察和二次插值的光伏发电最大功率跟踪控制[J]. 电力系统保护与控制, 2011,39(4): 62-67. [13] 赵云凤, 李田泽, 陈世宝, 等. 光伏发电非线性步长最大功率跟踪研究[J]. 可再生能源, 2013, 31(1): 17-20. [14] 赵争鸣, 刘建政, 孙晓瑛, 等. 太阳能光伏发电及其应用[M]. 北京: 科学出版社, 2005: 27-28. [15] 叶秋香. 光伏电池最大功率跟踪器的模糊控制及其应用[D]. 上海: 东华大学, 2006..
2014, Vol. 15 
