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Model-Based Active Fault-Tolerant Control for Power Electronic Converter in a Hybrid AC/DC Microgrid

A novel fault-tolerant control (FTC) approach for an AC/DC pulse-width modulation (PWM) power electronic converter at microgrid level is proposed in this paper. A cluster of loads and renewable energy resources including wind turbines (WT) and solar photovoltaic (PV) array are considered as a hybrid AC/DC microgrid. In order to tolerate the effects of power-loss faults in the PV system and prevent their propagation through the entire microgrid, an active FTC approach based on fuzzy logic for the AC/DC PWM converter is presented. The effectiveness of the proposed approach is demonstrated in MATLAB/Simulink environment using a well-designed microgrid benchmark model.