Coati optimized FOPID controller for non-isolated DC–DC converters in EV charging application

Abstract

The transportation sector's shift from internal combustion engines to electric vehicles (EVs) has made enough charging facilities necessary. The converter's architecture has undergone several changes to provide the best possible charging for electric vehicles. For EV charging applications, both isolated and non-isolated converters are employed. The significant strain on switches and losses in the various converter topologies are among the main problems. To minimize these issues, the current-fed non-isolated DC–DC converter is proposed with fewer switching devices. The proposed converter design is validated for the EV charging application in the MATLAB/Simulink tool. Moreover, Coati optimized fractional order proportional integral derivative controller is proposed, which provides optimum switching signals for the converter based on the voltage input. Furthermore, the responses are realized for buck and boost modes of operations. It is verified that zero current switching and zero voltage switching are achieved under boost mode. The results analysis demonstrates that the proposed converter has a higher efficiency of 99.7% and 99.02% in buck and boost mode, respectively.