Abstract
Voltage distortions, flicker and unbalances are the major synchronisation problems in grid connected photovoltaic system leading to power quality issues. Also, sudden changes of load, application of nonlinear loads and switching conditions causes power quality issues. To overcome these problems, the proposed grid connected PV system is implemented with a custom power device (unified power quality conditioner). The photovoltaic system is designed and implemented by mathematical model approach, and a maximum power point tracing-based (MPPT) dc-dc converter is used to extract maximum power from the solar system. The reference signal required for series and shunt converter of unified power quality conditioner (UPQC) is controlled with optimisation techniques. An MPPT-based boost converter is implemented with PV system to improve the efficiency in such a way that the duty cycle required for boost converter and parameters of PI controller are tuned effectively with an implementation of novel hybrid MPPT technique, i.e., hybrid connection of LOA-GH algorithm. This proposed system is to be implemented and tested in MATLAB/Simulink and results are to be verified with different controllers.
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