Programmable buck-boost converter for EV charging application

An increase in energy supply is required to meet the world’s rising energy consumption. Finding alternative energy sources, such as renewable energy, is encouraged because burning fossil fuels creates harmful chemicals and polluting atmosphere and water resources. The objective of this study is to build a closed loop DC/DC Buck-Boost converter for an EV charging application. In this research, the design of a buck-boost converter with a fuzzy logic controller incorporates the use of single phase grid supply. The fuzzy based controller receives the output voltage and its change in error as input, and the duty signal is generated in accordance with the rule-based feed to the fuzzy data base. The DC-DC converter is operated in boost mode if the input voltage is less than 70 V and in buck mode if the input voltage is higher than 70 V. For the buck-boost converter’s selected electric vehicle battery charging application, a battery with a 60V, 50AH capacity is used for simulation. MATLAB Simulink and Pspice were used to perform simulation and the hardware for DC-DC converters is being designed and tested.