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。
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 photovohaic 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
出处
《电测与仪表》
北大核心
2012年第1期67-71,共5页
Electrical Measurement & Instrumentation
关键词
光伏并网
最大功率点跟踪
变步长
grid-connected system, maximum power point tracking, variable-step
