太阳能半导体照明系统控制器的研究与设计

Research and Development of Controller for Solarsemiconductor-lighting System

在增量电导法的基础上提出一种改进的最大功率点跟踪算法。该算法在最大功率点两侧取不同变化步长,可减小在最大功率点附近的振荡,降低振荡造成的能量损失。设计了基于此算法进行最大功率点跟踪的太阳能半导体照明系统控制器,并进行了系统工作状态分析。控制器通过ATmega16单片机实现系统在不同工作状态间的切换和对蓄电池充放电的精确控制,提高了太阳电池的利用率,结合了太阳电池和半导体照明的优点。

An improved maximum power point tracking （MPPT） algorithm based on incremental conductance method is proposed. Different step lengths are chosen on both sides of the maximum power point （MPP） to decrease oscillation, and thus to reduce the energy loss caused by oscillation. And then, a controller based on the improved MPPT algorithm for solarsemiconductor-lighting system is designed, and the active states of the system are analyzed. The controller switches among different active states and controls the charge and discharge of the battery accurately through ATmega16,so as to promote the utilization ratio of solar array and to combine the advantages of ,both solar array and semiconductor-based lighting.