A NOVEL APPROACH USING PID CONTROLLED PERTURB & OBSERVE MPPT ALGORITHM FOR PHOTOVOLTAIC SYSTEMS

Abstract

Nowadays, renewable energy resources play a significant role in electric power generation. There are various resources such as solar, wind, geothermal and so on. Solar energy is a good choice for power generation because it is an everlasting energy resource and environmental friendly too. Since the efficiency of solar PV panel depends upon the irradiance level, several maximum power point tracking (MPPT) techniques have been introduced for the extraction of maximum power from the PV panel. This paper has been introduced a novel approach based MPPT technique for improving the performance of the standalone PV system. In order to extract accurate power point in the PV panel an intelligent Perturb & Observe algorithm is implemented along with closed loop PID controller. To simulate the panel power and justify the efficiency of the proposed algorithm by various simulations results are carried out using MATLAB software. The result reveals that the proposed method can effectively increase the system efficiency with fast, better dynamic response and enhanced regulated output power compared to the conventional P&O algorithm at different solar luminance levels. In order to validate the performance of the proposed algorithm a 50W prototype system with F28035 based Microcontroller has been used.