Modern power electronics has developed a great interest in grid integration of solar photovoltaics. The penetration of renewable energy resources causes problems of power quality, due to their intermittent behavior. These problems include but are not limited to reactive power flow, voltage dip or sag, over-voltage, distortions in current and voltage waveforms. Similarly, non-linear loads have been consistently increased on the consumer side. These power electronics-based equipment bring harmonics into the power system and as result demand of reactive power rises. This research aims a Unified Power Quality Conditioner for grid integration of solar PV. In the proposed technique, a part of the PV power is used for the power quality management and the rest of the power is sent back into the grid. The major constituents of PV system are; DC-DC boost converter, PV array, whereas, P &O algorithm is adopted to ensure the maximum power point operation of the PV array. The analysis and testing of the proposed approach have been successfully accomplished in MATLAB/Simulink. The results of the simulation reveal that along with the active power injection to the grid, the conditioner is capable to; pay compensation for harmonics, corrects sags and swells in voltage and also regulates the load voltage at its nominal value.
Niaz Ali1 Muhammad Naeem Arbab Rizwan Kamal and Muhammad Bilal Application of Unified Power Quality Conditioner in Grid Integration of Solar PV System International Journal of Engineering Works Vol. 7 Issue 01 PP. 01-09 January 2020
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