Design and Implementation of Phase Locked Loop for Distributed Generation Systems

Abstract

This project work concentrates on design and implementation of grid frequency
synchronization of three phase inverter fed grid connected system. Initially, three phase
inverter with sinusoidal PWM technique has been simulated with MATLAB/Simulink for RL
load. As a next step, the design of LC filter has been carried out to generate sinusoidal
waveform because the grid is subjected to disturbance as modulating wave frequency
modifications, it is obligatory to preserve the frequency of grid linked to strength gadget at
50 Hz. The Grid frequency synchronization alongside amplitude and phase perspective of
grid, via segment locked loop method has been supplied. The entire setup is implemented in
real time by generating sine PWM pulses with the help of Arduino ATmega328P
microcontroller.