Conference Papers
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Item A Novel Bidirectional Modified SEPIC-Cuk Converter with Wide Voltage Conversion Ratio(Institute of Electrical and Electronics Engineers Inc., 2023) Mandal, S.; Prabhakaran, P.The paper proposes a novel transformer-less bidirectional DC-DC converter that achieves ultra-high gain and reduces voltage stress across components. This converter is based on modified SEPIC and CUK topologies, and its derivation, operating principle, and steady-state analysis are presented. The paper also includes dynamic modeling of the converter and the design of closed-loop controllers for voltage and current control modes. Detailed analysis and simulation results are provided to demonstrate the efficacy and performance of the proposed topology. Overall, this innovative converter offers a promising solution for high-efficiency energy transfer with ultra-high voltage gain in various applications. © 2023 IEEE.Item A Novel Bidirectional High Gain DC-DC Converter with Active Switched Inductor and Wide Voltage Conversion Ratio(Institute of Electrical and Electronics Engineers Inc., 2023) Mandal, S.; Prabhakaran, P.Energy storage devices are indispensable for ensuring voltage and frequency stability in renewable energy sources such as solar and wind. Distributed generation systems necessitate bidirectional DC-DC converters to facilitate charge and discharge operations in accordance with operational requirements. In this paper, we introduce a new bidirectional DC-DC converter tailored to achieve substantial voltage gain while minimizing switch stress and maintaining a minimal component count. The proposed converter operates in buck mode for one power flow direction and boost mode for the other, ensuring continuous input and output current and reduced charging/discharging ripple. Comprehensive details regarding the derivation, operational principles, and meticulous steady-state analysis of the proposed converter are presented in this paper. Furthermore, a dynamic model of the converter is provided, and the design of closed-loop controllers for current control modes is outlined. We present extensive analysis and simulation results to illustrate the efficacy and performance of this novel topology. In summary, this converter offers a promising solution for achieving high-efficiency energy transfer with significant voltage gain, making it suitable for a wide array of applications. © 2023 IEEE.