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Item Single-Switch Continuous Current High-Gain DC-DC Converter with Common Ground for Vehicular Applications(Institute of Electrical and Electronics Engineers Inc., 2025) Shetty, S.; Prahllada, A.M.; Vinatha Urundady, U.Efficient power conversion is essential for integrating fuel cells into hybrid vehicles, where high voltage gain, minimal switching devices, high efficiency, and low input current ripple are critical for performance. This paper presents a high-gain quadratic boost DC-DC converter tailored for fuel cell hybrid vehicles, utilizing a switched inductor-capacitor technique with a clamping circuit to reduce voltage stress while maintaining a common ground structure. The converter’s operation, component design, and controller development are analyzed in detail, with comparisons to existing high-gain topologies. A 400V, 200W prototype was constructed and tested under varying supply and load conditions, achieving a maximum efficiency of 93.5% with a gain of 13.33 at 58% of rated power. To validate its performance, a 20% step change in the input voltage was tested, demonstrating a robust transient response. This aligns with practical fuel cell systems, where reactant partial pressure regulation typically keeps input voltage variations within 20%. Experimental results confirm the converter’s scalability for fuel cell vehicle applications, underscoring its potential to advance sustainable automotive technologies. © 2013 IEEE.Item High-Gain Nonisolated DC–DC Converter with Zero Input Current Ripple for Fuel Cell Electric Vehicles(Institute of Electrical and Electronics Engineers Inc., 2025) Shetty, S.; Mishra, S.; Vinatha Urundady, U.This paper presents a novel single-switch, common-ground high-gain DC–DC converter for vehicular applications, integrating a Current Mirror Ripple Cancellation Circuit (CMRCC) to achieve a continuous input current with negligible ripple. The proposed power stage incorporates one switched inductor–capacitor (SLC) cell and one switched capacitor (SC) cell, along with a clamping circuit to reduce voltage stress on the switching device, thereby enhancing efficiency and reliability. This configuration delivers high voltage gain while maintaining control simplicity through a single-switch design and minimizing electromagnetic interference via the common-ground structure. A comprehensive theoretical analysis is provided, covering voltage gain, efficiency, component stress, and open-loop stability. A 48 V/400 V, 350 W laboratory prototype was developed to validate the proposed design under dynamic load and source variations, achieving a peak efficiency of 94.4%, an input current ripple below 1%, and a transient deviation of less than 10% under 30% load and 20% source step changes. These results confirm that the proposed integrated approach offers a compact, high-performance, and application-ready solution for electric vehicle powertrains and renewable energy systems. © 2015 IEEE.