FPGA based implementation of MPPT of solar cell

In P-V (Power-Voltage) curve of a solar panel, there is an optimum operating point such that the PV delivers the maximum possible power to the load. The optimum operating point changes with the solar irradiation, and cell temperature. Therefore, on line tracking of the maximum power point of a PV array is an essential part of any successful PV system. A variety of maximum power point tracking (MPPT) methods is developed. The methods vary in implementation complexity, sensed parameters, and required number of sensors, convergence speed, and cost. This paper presents FPGA based implementation of a simple MPPT algorithm (Perturb-and-observe method) in such a way that does not require special measurements of open circuit voltage or short circuit current.