PWM充电策略在光伏照明系统中的应用

PWM charging strategy in photovoltaic lighting system application

针对当前中小型光伏照明系统中存在蓄电池使用寿命短、控制精度不高等不足,采用用一种高分辨率可调的PWM(Pulse Width Modulation)充电控制方法,搭建了基于AVR的太阳能光伏系统,优化识别光伏板和蓄电池的状态。实验结果表明:高分辨率可调PWM输出得到优化,延长了蓄电池的使用寿命,提高了系统的稳定性。

According to battery service life existing in medium and small-sized photovoltaic lighting system is short currently, control precision is not high as well as insufficient, by using a high-resolution adjustable Pulse Width Modulation charging control method, a solar based on AVR lighting system was constructed, optimize and identify photovoltaic panels and battery state. The tested results shown that high-resolution adjustable Pulse Width Modulation output was optimized, battery service life was extended, the stability of the system was improved.