Integration of a Fault-Tolerant H-Bridge Inverter into the Photovoltaic System for DC-AC Conversion of Electrical Energy

The photovoltaic system is experiencing great growth in the production of electrical energy these days. It plays a vital role in the production of electrical energy in isolated towns. It is generally either stand-alone or connected to a network. The energy produced by the photovoltaic generator is in continuous form; the conversion from its continuous form to the alternating form requires a converter: the inverter. In order to improve the quality of the waveform, we moved from the classic solar inverter to multilevel inverters. These multilevel inverters are equipped with power switches which are required to withstand strong fluctuations in the voltage produced by the GPV (photovoltaic generator). It is obvious that the degradation of the inverter leads to a distortion of the wave quality. This article presents the simulation of the GPV-Chopper Boost-Inverter chain in fault-tolerant cascaded H-bridges in order to overcome the difficulties of voltage constraints experienced by power switches (IGBT: insulated gate bipolar transistor). The results of simulations carried out in Matlab/Simulink show good performance of the designed inverter model.