Maximum Power Point Tracking for PV System

This paper presents the design and practical implementation of Maximum Power Point Tracking (MPPT) for Photovoltaic (PV) system based on Perturb and Observe algorithm. A DC-DC converter is used to regulate battery charging. The system is controlled by using an Arduino based AVR Microcontroller (ATMEGA 16), sensing the solar panel voltage and generating the Pulse Width Modulation (PWM) signal to control duty cycle of the DC-DC converter. The ATMEGA16 microcontroller was chosen because it has the necessary features for our project such as built-in Analog-to-Digital Converter (ADC), PWM outputs, low power consumption and low cost. Additionally, we have also included “real time single axis solar tracking system” to our solar panel using LDR sensors, which improves energy extraction and efficiency. Implemented hardware demonstrate the effectiveness and validity of the proposed system in order to attain satisfactory results from the method. This paper mainly focuses on the successful use of ATMEGA16 controller in the execution of the MPPT calculation and its constructional highlights which help pick up the fitting and precise outcomes.