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Abstract
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In this paper, an SEPIC-based direct current–direct current (DC–DC) converter
with high voltage gain and continuous input current is provided. Input current
Continuity is a great advantage for renewable resources applications, and a
small filter can be used in the output of these sources. Also in this paper, the
effect of coupled inductor in three-winding structure is discussed compared to
the two-winding coupled inductor. Precise analysis of converters based on
two-winding and three-winding coupling inductors requires that the structures
be similar so that the evaluation can be performed correctly. A comparison is
performed between the two-winding coupled inductor-based converter and the
improved converter to show the advantages of the proposed converter. All
elements of the converter have been compared, and since both converters are
different in terms of coupled inductor, complete analyses have been done
in the field of calculating inductors. In addition to the features of the twowinding coupled inductor converter, the proposed converter requires smaller
coupled inductor to decrease the core size and increase the converter
efficiency.
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