Abstract
The integration of Solar Photovoltaic (SPV) power generation system with the grid by using Enhanced Phase Locked Loop (EPLL) scheme based indirect control. The developed control scheme for synchronizing the SPV system with utility grid improves the power factor of the source and voltage profile at the point of common coupling (PCC). The proposed controller maintain the voltage profile at PCC through reactive power compensation. The proposed system includes SPV array, a DC/DC boost converter, maximum power point tracking (MPPT) controller, voltage source converter (VSC), filter, various loads and three phase utility grid. The proposed grid synchronization technique provides better active and reactive power control, reduced harmonic and load balancing. Testing for the proposed grid integrated SPV system has been performed for two type of operations i.e. unity power factor (UPF) mode operation of the system and voltage regulation with balancing of loads with linear load and non-linear loads.
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