MPPT Based Photovoltaic High Intensity Discharge Street Lighting System Using Fuzzy Logic Controller

Photovoltaic (PV) systems are increasingly used to generate electric energy from the solar irradiation incident on PV modules. The single ended primary inductance converter (SEPIC) is studied for maximum power point tracking and battery charging. High MPPT accuracy and high conversion efficiency can be achieved for different atmospheric conditions. A pulse-current-charging scheme with adaptive rest period is applied to avoid battery overcharging. Electronic ballast is designed for releasing the solar energy stored in battery for powering the HID lamps. The PV HID street lighting system is connected to ac-line utility with SEPIC Power factor correction (PFC) converter. High input power factor can be achieved by drawing the power from acline utility for powering HID lamps and it also prevents the battery from over discharging. This proposed PV HID street lighting system with a Fuzzy Logic Controller (FLC) has the advantage of high efficiency, low THD, simple circuit and long lifetime. Simulations have been carried out using MATLAB 7.9-simulink and experiments using a prototype.