Abstract
The drastic increase in demand for non-conventional energy sources for grid or standalone applications has led to a focus on the design of power electronics converters. Isolated DC/DC converter converters are emerging as very good interfacing elements for electrical applications including high voltage range requirements. Flexibility to vary voltage gain using a coupled transformer, electrical isolation between input and output, high power transfer capability and improved power quality have been the significant aspects for adopting isolated DC/DC converter converters for various power applications. High current demand for high voltage gain requires the integration of promising sources like fuel cells. High efficiency, portable size, high energy density and low temperature operation make the usage of fuel cells a dominating factor. The combination of fuel cells with an isolated DC/DC converter is a promising alternative to conventional systems involving PV and non isolated converters. The power electronic converters are controlled by fast switching semiconductor components. Conventional control uses hard switching technique in which the semiconductor switch is subjected to turn ON/OFF at a finite current or voltage level. This process increases the switching loss and reduces the overall efficiency of the converter. However, soft switching technique includes zero voltage and/or zero current switching is an advanced switching method which reduces the loss and improves efficiency. Thus the present work aims at design and implementation of a fuel cell fed isolated DC/DC converter with soft switching technique. As compared to conventional switching, the efficiency using the proposed system is improved and justified using MATLAB simulations.
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Bankupalli, P.T., Varaprasad, M.V.G., Chander, A.H. (2023). Design and Implementation of an Unidirectional Isolated DC-DC Converter for Fuel Cell Applications. In: Namrata, K., Priyadarshi, N., Bansal, R.C., Kumar, J. (eds) Smart Energy and Advancement in Power Technologies. Lecture Notes in Electrical Engineering, vol 927. Springer, Singapore. https://doi.org/10.1007/978-981-19-4975-3_59
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