Automatic Observation and Detection of Faults for Solar Photovoltaic Systems with Multilevel Inverter Topology

Abstract

The incorporation of custom power devices into solar Photovoltaic (PV) systems is promising because the strength of these devices such as improving power stability, providing voltage and current ride-through, and regulation of power flow is needed in the system. This work builds a Simulink model for a solar PV Maximum Power Point Tracking (MPPT) controlled system using a cascaded H-bridge bridge (CHB) Multilevel inverter (MLI) with bidirectional switches that can synthesize numerous output voltage levels. Failure recognition and determination of conceivable failure source driving to the total or halfway loss of efficiency in a lattice-associated PV system. The analytic technique is important for the checking system permitting, at the same time, displaying and reproducing the entire framework and factors estimations progressively. The calculation of faults is based on the analysis of replicated and estimated yields by breaking down the faults that are present in the system, while the determination of the type of losses is finished by analyzing and contrasting the amount of errors deviation of both Direct Current (DC) and voltage regarding asset of errors limits evaluated using a free issue system. Analyze the stability indices during transient conditions at load or grid side and mitigate various Power Quality (PQ) issues due to an unsymmetrical fault during transient conditions by employing a custom power device with the proposed system.