Intelligent controller for photovoltaic lighting systems

Photovoltaic lighting systems have problems such as low efficiency, instabilities, short battery life, etc. To solve these problems, this paper presents a costeffective and intelligent controller for photovoltaic lighting systems using a cheap MCU 89C51. The proposed energy management controller effectively enhances the system performance. The controller uses the maximum power point tracking (MPPT) scheme with precise control over the battery charge. The intelligent management system enables stable and efficient system operation. Test results verified the analysis.