Grid connected Photovoltaic (PV) system installations are rapidly growing around the globe to meet the increasing demand of electricity, leading to a high penetration to the electric grid. Tremendous efforts should be employed to sustain the operation of the PV system at the optimal level. Due to its non-linear nature, PV system can’t handle electrical faults, which may lead to voltage sag at DC side while simultaneously producing dynamics at AC side. This work offers techniques for improving the dynamic performance of the PV system by controlling voltage sag through the application of fuzzy logic based maximum power point techniques (MPPT) at DC-DC boost converter and the regulation of dynamics at inverter by using positive and negative sequence current controlling techniques during grid faults. In the event a fault occurs, fuzzy logic based MPPT controller will be activated, instead of the simple MPPT techniques. These techniques are implemented by designing 1 MW PV system in MATLAB/SIMULINK and validating the results by introducing faults in the implemented system.
Amir Nangyal Dr. Abdul Basit M. Asif Khan and Zeeshan Ullah Improvement of Dynamic Performance using the Grid-Tied Photovoltaic (PV) System with Nonlinear C International Journal of Engineering Works Vol. 6 Issue 12 PP. 459-465 December 2019
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