In this
paper, a three-phase inverter with renewable source input is integrated into a
grid in synchronization for power sharing by load. In previous topologies, the
DC source connected inverter is not synchronized to the grid which causes
harmonics and voltage distortions damaging the load and the source. In order to
ensure power sharing by the load from the inverter and the grid, the inverter
needs to be operated in synchronization to the grid with the same voltage
mag-nitude, frequency and phase as that of the grid voltage. In this paper, the
com-plete power from the load is shared by the three-phase grid and the
three-phase inverter module reducing the consumption from the conventional
grid. This is achieved using the PLL for the reference angular frequency
generation with feedback from grid voltage and is connected to the sinusoidal
PWM generator. The PLL is used to generate unit vector template reference
signals for the signal generator operating the six-switch inverter. The
inverter and grid are inter-connected through LC filter for the reduction of
harmonics. The power sharing, voltage, and current graphs with THD analysis are
analyzed with the help of the MATLAB software.
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