Performance analysis of single input three output non isolated dc dc converter topologies for electric vehicle applications

Abstract

The requirement for an Electric Vehicle (EV) has numerous glitches newlineand solutions in the field of EV technology. Due to the fast advances in EVs, newlineit is essential to discover an alternative source for powering the EVs. The newlinerenewable sources, such as solar photovoltaics (PVs) and Fuel Cells (FCs), newlineare chosen; nevertheless, such sources produce less output voltage and are not newlineadequate to power the EVs. Nevertheless, the output voltage obtained from newlinethe FC or PV system is significantly less, and it is not adequate to drive the newlinemotor in EVs. The DC-DC converter boosts FC and PV output voltage. FC newlineand PV systems, Single-Input Multiple-Output (SIMO) converter has been newlinedescribed as a gainful solution to power generation systems. The SIMO newlineconverters, together with the comparatively complicated arrangement of newlineSingle-Input Single-Output (SISO) converters connected to a standard DC bus newlineto exchange power, have promising features of lower components, higher newlinepower density, and centralized control. In addition, the EV also needs various newlinelevels of output voltage for the whole system. The high output voltage gain newlinewith a highly efficient DC-DC converter is required for Fuel Cell (FC) based newlineEVs. In addition, multiple output terminals are also required by the EVs to newlinesupply power to different parts of the system. Therefore, this thesis presents newlineseveral challenges regarding the expansion of SIMO converters, i.e., a Single newlineInput source with Three different levels of the Output voltage (SITO), and newlineproposes new high step-up converters for PV and EV applications. newlineThere are various boosting methods, such as Coupled Inductor (CI), newlineSwitched-Capacitor (SC), Super-Lift (SL), Voltage Multiplier (VM) cells, newlineSwitched-Inductor (SI), etc., are used to step-up the voltage to the voltage newlinegain required. Based on the various studies, two different versions of DC-DC newlinenon-isolated step-up converter are proposed and discussed in this dissertation. newline