DESIGN OF BIDIRECTIONAL DC-DC CONVERTER FOR E-MOBILITY

A bi-directional buck-boost DC-DC converter and its control are presented in this paper for vehicle charging and vehicle-to-grid (V2G) energy transmission. With a greater intermediate DC bus voltage, the cascaded buck-boost design permits overlapping input and output voltage ranges. To increase the converter's transient performance, the intermediate DC-link capacitor voltage is changed. This capacitor's reference voltage is determined by the input and output voltage levels, as well as the power requirement. Simulation and tests were used to assess the converter's modularity, control flexibility, and transient performance. In certain ways, each of the converter topologies has an advantage over the others. For practical applications, feasibility studies have been conducted. To back up the theoretical conclusions, simulation and experimental data are presented for both converter types. Innovative topologies for the power converter system have resulted from hybridization with various electric energy sources and the use of various auxiliary outputs in PEV applications. For PEV applications, this thesis offers a unique bidirectional DC-DC converter with multi-input and multi-output capacity. With the existing controller, a control algorithm has been developed. For the converter system, I designed and constructed a system. To increase the overall system efficiency, a passive auxiliary circuit was utilised to allow soft switching approach in the multiple input condition. To underline the control strategy, simulation and experimental findings have been presented.