This research paper introduces an avant-garde poly-input DC-DC converter (PIDC) meticulously engineered for cutting-edge energy storage and electric vehicle (EV) applications. The pioneering converter synergizes two primary power sources-solar energy and fuel cells-with an auxiliary backup source, an energy storage device battery (ESDB). The PIDC showcases a remarkable enhancement in conversion efficiency, achieving up to 96% compared to the conventional 85-90% efficiency of traditional converters. This substantial improvement is attained through an advanced control strategy, rigorously validated via MATLAB/Simulink simulations and real-time experimentation on a 100 W test bench model. Simulation results reveal that the PIDC sustains stable operation and superior efficiency across diverse load conditions, with a peak efficiency of 96% when the ESDB is disengaged and an efficiency spectrum of 91-95% during battery charging and discharging phases. Additionally, the integration of solar power curtails dependence on fuel cells by up to 40%, thereby augmenting overall system efficiency and sustainability. The PIDC's adaptability and enhanced performance render it highly suitable for a wide array of applications, including poly-input DC-DC conversion, energy storage management, and EV power systems. This innovative paradigm in power conversion and management is poised to significantly elevate the efficiency and reliability of energy storage and utilization in contemporary electric vehicles and renewable energy infrastructures.

Department of Electrical and Computer Engineering College of Engineering Sustainable Energy Center of Excellence Addis Ababa Science and Technology University Addis Ababa Ethiopia

Department of Electrical and Electronics Engineering Christ Deemed to Be University Bangalore India

Department of Electrical and Electronics Engineering Mohan Babu University Tirupati India

Department of Electrical Engineering Graphic Era Dehradun 248002 India

Department of Electrical Engineering School of Physics and Electronic Engineering Hanjiang Normal University Shiyan 442000 Hubei People's Republic of China

Graphic Era Hill University Dehradun 248002 India

Hourani Center for Applied Scientific Research Al Ahliyya Amman University Amman Jordan

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Design and performance evaluation of a multi-load and multi-source DC-DC converter for efficient electric vehicle power systems