Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item A Nonisolated Enhanced Voltage Gain Dual Input DC-DC Converter with Symmetrical Bipolar Output(Institute of Electrical and Electronics Engineers Inc., 2024) Prasad, S.; Prabhakaran, P.; Arun Dominic, A.D.This paper introduces a novel four-port DC-DC converter designed for hybrid energy integration. The proposed non-isolated circuit topology provides a symmetrical bipolar output with enhanced voltage gain. It is specifically designed to interface Solar PV and fuel cells with a Bipolar DC microgrid, enabling single-stage energy conversion. The power converter features a simplified circuit structure with fewer components compared to existing high-gain multiport converters. Furthermore, it effectively controls inductor current and balances both pole voltages using a single set of controllers. A small-signal model is deduced for each operating state to facilitate the design of the control system. Steady-state and transient results are presented to validate the efficacy of the proposed circuit topology. © 2024 IEEE.Item A Dual Input Bipolar Symmetrical Output DC-DC Converter with Improved Voltage Gain(Institute of Electrical and Electronics Engineers Inc., 2024) Prasad, S.; Prabhakaran, P.; Arun Dominic, A.D.The article explores a novel multi-port converter specifically designed for interfacing Solar PV and battery systems to bipolar load setups, consolidating power transfer within a single stage. The proposed converter demonstrates an improved voltage gain compared to contemporary non-isolated multi-input DC-DC converters, while exhibiting more lenient port voltage constraints, thereby enhancing the system's overall operational flexibility. Capable of executing as a single-input-triple-output, dual-input-dual-output, or single-input-dual-output system, the introduced converter adapts to the dynamic energy interactions between the source and the load. Furthermore, the converter achieves current control for the PV source and inherently balances both pole voltages using a simplified control strategy due to its consistent dynamic model. The article delves into various operational modes and presents steady-state and dynamic simulation results, highlighting the efficacy of the proposed circuit. © 2024 IEEE.