仿真技术在光伏系统功率跟踪中的应用

摘要

The-output-power-of-the-photovoltaic-(PV-)-cell-has-the-single-peak-,-the-maximum-power-point-tracking-(MPPT)-is-essential-to-make-the-PV-cell-always-work-in-maximum-power-point-(MPP)-,and-to-improve-the-efficiency-of-PV-system-.In-order-to-eliminate-the-contradiction-between-the-tracking-speed-and-the-tracking-accuracy-,the-fuzzy-control-strategy-was-proposed-.The-packaging-model-of-PV-cell-,fuzzy-controller-and-the-MPPT-simulation-model-of-fuzzy-control-algorithm-had-been-established-.The-simulation-results-show-that-the-fuzzy-control-can-track-the-MPP-rapidly-and-reduce-the-oscillation-power-loss-effectively-,maximizing-the-output-power-,the-fuzzy-algorithm-is-simple-and-flexible-and-has-better-tracking-effect-.%针对光伏电池最大功率跟踪（M PPT ）常用算法在跟踪速度和跟踪精度之间的矛盾，提出模糊控制策略，通过Matlab/Simulink搭建了光伏发电系统模糊控制算法仿真模型。通过仿真分析证明，该模糊算法能够迅速响应并有效减小最大功率点附近的振荡，最大限度地提高光伏电池的输出功率。该算法简单、灵活且跟踪效果好。