光伏发电非线性步长最大功率跟踪算法

Maximum power point tracking algorithm using the nonlinear steps in photovoltaic

针对光伏发电最大功率跟踪速度慢、损耗大的问题,提出一种非线性步长最大功率跟踪算法.将matlab仿真结果与实验测得数据进行对比表明:在光照强度、温度等外界环境改变的情况下,系统能快速稳定的跟踪到最大功率点,减少了波动造成的损耗,有效提高了光伏发电系统的效率.

A new maximum power point algorithm using the nonlinear step to track the maximum power is proposed for the photovoltaic maximum power point tracking to improve the low tracking speed and the high loss power.The sysytem performance was evaluated by experiments and emulations in Matlab.The results show that with the algorithm,the system can track the maximum power point smoothly and quickly especially in the situation of changing temperature and sunshine.The new algorithm improved the efficiency of the PV system effectively.