摘要
针对光伏发电系统中光伏阵列的输出功率易受外部环境影响而降低了系统效率的问题,文中采用了Buck-Boost电路和基于最优梯度法的最大功率点跟踪控制方法。该控制系统能使光伏发电系统输出功率快速跟踪外部环境的变化,同时能有效消除或减弱光伏阵列在最大功率点附近的功率振荡现象,从而提高了光伏阵列的利用率。利用Matlab/Simulink建立仿真模型,验证论文提出的方案并得出可行结果。
In response to the dwindling efficiency of photovoltaic power generation system caused by the vulnerability to external circumstance of the PV array output power,the paper adopts a control system based on maximum-power-point-tracking controlling method with optimal gradient method.The control system enables the output power of photovoltaic power generation system to rapidly follow changes of exterior surroundings and also to effectively eliminate or undermine power oscillation phenomenon of photovoltaic devices in the vicinity of their maximum power point,thus enhancing the utilization of photovoltaic devices.Using Matlab/Simulink to establish a simulation model to verify the proposal thesis and the results.
出处
《通信电源技术》
2011年第2期1-4,共4页
Telecom Power Technology
基金
上海研究生创新基金项目(JWCXSL0902)
