Abstract
A grid connected inverter must provide a sinusoidal AC waveform which remains stable and also matches voltage and grid frequency according to defined standards. A non-synchronized or poorly synchronized inverter can lead to imbalances in load, can cause damage to equipment, grid instability, and even power outages in the grid itself. The problem become more significant if inverters of renewable resources are of distributed nature and connected to grid to fulfill the energy demand. These distributed inverters will have the phase difference among their output voltages. This difference of voltage will affect the power quality of the net output voltage. In this case voltage source inverters (VSI) of all the grid connected resources need to be synchronized so that they may be connected to grid without causing any fault in the system. In this research a solution is presented to synchronize all DC/AC converters from different resources. Solution is supported by MATLAB simulations.
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