Design and Implementation of High-Performance Single-Input Multi-Output High Step-up Non-Isolated DC–DC Converter Topology

Abstract

Due to the rapid developments in the field of electric vehicles (EVs), it is necessary to find the alternate source to power the EVs. The energy sources, such as fuel cell (FC) and solar photovoltaics (PV), are preferred; however, these sources produce low output voltage, and it is not sufficient to drive the EVs. The DC–DC converters are used to boost the voltage to the required voltage of the EVs; in addition, the EVs also require multiple output terminals to deliver the power to various parts of the system. Hence, in this paper, a new DC–DC converter topology is proposed to produce the three different output voltages from the single input source. The proposed converter has features such as high voltage gain with less duty cycle, reduced number of components, less power loss, and hence the efficiency. Moreover, the converter is operated with a single MOSFET switch with low [Formula: see text] due to its less voltage stress and high voltage gain. The required voltage gain is achieved by the super-lift (SL) technique, and the converter is also provided with a passive clamp circuit to recover the leakage energy of the coupled inductor. The theoretical analysis of the proposed converter is verified through the experimental prototype of 300 W, and the result proves the converter may be suitable for EV applications and the applications which require multi-level output voltage with a high voltage gain.