A novel approach on MPPT algorithm for solar panel using buck boost converter

Abstract

According to maximum power transfer theorem, a solar module will be unable to transfer maximum power to the load by itself due to an impedance mismatch that occurs in the system. A maximum power point tracking (MPPT) system should be employed to extract the maximum power. Micro controller is used to control the output of the converter. Photo-voltaic (PV) module output power is measured using sensors and is sent to micro controller. The output power of the present module is compared with the previous module output power and the duty cycle of the converter is adjusted continuously to track the Maximum power. This process is repeated until the output power reaches near the maximum power point. In this project, a maximum power point tracking system is developed using buck-boost converter. Stepped Perturb and observe type of MPPT algorithm is used to transfer maximum power from the PV panel.