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Frequency, Voltage and Angle Tracking for Photovoltaic Grid-Connected Inverter based on SVPWM Technique

Photovoltaic (PV) and other sources of renewable energy are being used increasingly in grid-connected systems, for which stronger power quality requirements are being specified. This project upholds the objective of developing an inverter with frequency, voltage and angle tracking using Space Vector Pulse Width Modulation (SVPWM) technique. This project will give an overview of different techniques employed for the inverter control of inverters in grid connected applications, where the power transfer is ensured always from the inverter to the utility. SVPWM is employed as the method for inverter control. Use of SVPWM technique gives a better harmonics response and higher efficiency as compared to the normal regular sampled pulse width modulation techniques. Also another advantage of SVPWM is its ease in digital implementation. The present scope of project is to analyze the existing PWM techniques and their merits and demerits. It also includes the detailed study of proposed scheme of grid connection and implementation of SVPWM for three phase inverter using MATLAB/SIMULINK and results obtained are validated with the theoretical concepts.