| 基于改进的变步长光伏并网系统MPPT控制策略研究 |
| |
| 引用本文： | 张驰,张代润.基于改进的变步长光伏并网系统MPPT控制策略研究[J].电测与仪表,2012,49(1):67-71. |
| |
| 作者姓名： | 张驰 张代润 |
| |
| 作者单位： | 四川大学电气信息学院,成都,610065 |
| |
| 摘 要： | 提出一种新的基于扰动的最大功率点跟踪(MPPT)优化算法,在不同区域调节步长,改变光伏电池电压收敛速度。利用MATLAB仿真软件构建MPPT优化算法模型,模拟任意参数的光伏阵列,动态跟踪光照强度、环境温度的变化,并应用于三相光伏并网系统。仿真结果表明:该算法能够实时对光伏电池输出功率进行跟踪调节,大大提高光伏系统跟踪最大输出功率速度的同时,有效降低系统输出功率在最大功率点处的振荡现象,减小光伏组件的能量损耗。
|
| 关 键 词： | 光伏并网 最大功率点跟踪 变步长 |
Research on Improved Variable-step MPPT Strategy for the Grid-connected Photovoltaic System |
| |
| ZHANG Chi,ZHANG Dai-run.Research on Improved Variable-step MPPT Strategy for the Grid-connected Photovoltaic System[J].Electrical Measurement & Instrumentation,2012,49(1):67-71. |
| |
| Authors: | ZHANG Chi ZHANG Dai-run |
| |
| Affiliation: | (School of Electrical Engineering and Information,Sichuan University,Chengdu 610065,China) |
| |
| Abstract: | A new Maximum Power Point Tracking(MPPT) optimization algorithm is introduced with the modified Variable step method and the step-adjust in different zones is also used to change the convergence rate.This optimization algorithm model is used in three phase grid-connected system built by the MATLAB software,which can simulate any parameters of the photovoltaic module,and dynamically track any light intensity and ambient temperature.The MATLAB simulation results show that this method can be effective to adjust PV output power in real-time,and it can greatly improve the tracking speed and reduce the oscillation around the maximum power point(MPP) to reduce power consumption of PV device.This system is simple and has a certain reference value. |
| |
| Keywords: | grid-connected system maximum power point tracking variable-step |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电测与仪表》浏览原始摘要信息 |
|
点击此处可从《电测与仪表》下载全文 |
|
