基于电流控制的光伏太阳能充电器系统研究

Photovoltaic solar charger system based on the current control

提出一种基于电流控制的最大功率点跟踪方法用于光伏太阳能充电器,以DC/DC变换器中的Boost电路作为开关充电器,系统由一个光伏电池模块、一个基于Boost变换器开关电池充电器和电池组成。采用光伏电池输出电流控制实现系统的最大功率点跟踪,调整占空比,从而使太阳电池阵列输出功率最大,以输出稳定的电压对蓄电池进行充电,可以提高蓄电池使用寿命,有效地提高独立光伏系统的综合效率,降低整个系统的成本。

This paper presents a current control method for the maximum power point tracking（MPPT）of a photovoltaic solar charger system by using DC-DC Boost converter as switching charger,this system consisted of a solar array,a switching battery charger based on Boost DC-DC converter,a battery.Using photovoltaic cells output current of the maximum power point tracking control system,adjust the duty cycle,so that the sun battery array output power is the largest,with stable output voltage of battery charging,can improve the service life of the battery,effectively improve the comprehensive efficiency of independent photovoltaic system,reduce the cost of the whole system.