An extensive critique on fault-tolerant systems and diagnostic techniques intended for solar photovoltaic power generation

Abstract

Most of the micro-grids require solar photovoltaic (PV) panels to convert sunlight to electrical energy. The electrical energy converted by the PV panel is DC while most of the applications require AC; an inverter is used for conversion. The PV panels are usually placed on rooftops or at any unattended condition, so the PV panels will get easily damaged by the environmental impacts. The same scenario appears in inverter as well, while different types of faults will occur while connecting various types of loads to the system. This paper presents the different types of faults that occur in an entire solar photovoltaic integrated micro-grid. The novelty of the work undertaken is to provide an extensive coverage of all the faults that occur in a solar PV-assisted micro-grid. In addition to it, the critique also intend towards fault-tolerant and diagnostic techniques, which were not dealt elsewhere for the complete solar PV-assisted micro-grid system. The necessity of this survey is to provide an overview of all the faults that exist in a solar PV-assisted micro-grid and the strategies that require to operate the system even under fault condition to meet the customer need for providing continuous power without any interruption. The various faults considered for the study are at PV modules ,inverter, batteries, and charge controllers. The review first analyzes the different types of faults and then the diagnosis methods are presented. The novel solution to deal with various faults is also recommended and it was compared with the existing solutions to show the effectiveness of the proposed approach.