Design and Analysis of a Non-Isolated High Step-Up DC–DC Converter for Hydrogen Fuel Cell Electric Vehicles

The growing demand for sustainable and cost-effective transportation has resulted in the advancement of electric vehicles (EVs). These vehicles possess numerous advantages over conventional combustion engines, including enhanced fuel efficiency, diminished emissions, and lowered maintenance costs. Nonetheless, electric vehicles encounter financial challenges due to limited battery supply and the costs related to components. To overcome this obstacle, electric vehicle systems are shifting towards EVs powered by hydrogen fuel cells. In most cases, the DC bus requirements for an electric vehicles driving system are higher than the moderately low output voltage of a fuel cell. This paper describes a unique high gain DC-DC converter for fuel cell electric vehicles. The recommended non-isolated DC-DC converters use quadratic boost converters with uncontrolled switching capacitor designs for developed converters. The current converters needed one switch, two inductors, three capacitors, and five diodes. At a 50% duty cycle, the proposed circuit provides a significant voltage rise of roughly 8 times while putting little stress on the components. The steady-state analysis of the suggested circuit’s continuous and discontinuous conduction modes is presented. The proposed converters show indicators of increased overall FCEV performance. In order to evaluate the overall system performance, a 2KW prototype of high gain converter-fed BLDC motor drives for FCEV was built in the lab.