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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Reddy, Vangala Naga Bhaskar
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Control & Systems Engineering Electrical & Electronics Engineering

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Dynamic modelling and small-signal analysis of an efficient bridge-type multi-input DC converter for hybrid low-power systems Lomada, Baya Reddy; Reddy, Vangala Naga Bhaskar
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i4.pp2441-2452

Abstract

This paper presents the dynamic modelling and small-signal analysis of a bridge-type multi-input DC converter designed for hybrid low-power systems. The converter architecture supports the integration of multiple energy sources such as fuel cells and photovoltaic (PV) arrays, enabling enhanced flexibility and reliability. A CUK-based configuration is employed to achieve continuous input current and reduced voltage stress across the switches. The dynamic behavior of the converter is analyzed through average large-signal and small-signal state-space modelling. Stability is assessed using the Routh-Hurwitz criterion, and steady-state analysis is carried out to support performance evaluation. Experimental results obtained from a 250 W prototype confirm the validity of the developed models and demonstrate the efficiency and suitability of the proposed converter for hybrid renewable energy systems.
Co-Authors Lomada, Baya Reddy