Analysis and investigation of energy transmission process in different operating modes of Sepic converter

• Published in: IET power electronics Vol. 7; no. 4; pp. 819 - 828
• Main Authors: Babaei, Ebrahim, Seyed Mahmoodieh, Mir Esmaeel
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.04.2014; The Institution of Engineering & Technology
• Subjects: CCM; CISM; complete inductor supply mode; continuous conduction mode; Converters; DCM; DC‐DC converters; DC‐DC power convertors; discontinuous conduction mode; Electric potential; Energy transmission; energy transmission process; Equivalence; equivalent critical inductances; IISM; incomplete inductor supply mode; Inductors; Intervals; load resistance; Mathematical analysis; Sepic converter; Voltage; load resistance; discontinuous conduction mode; Sepic converter; complete inductor supply mode; CCM; DC-DC power convertors; DCM; continuous conduction mode; DC-DC converters; equivalent critical inductances; IISM; incomplete inductor supply mode; energy transmission process; CISM
• ISSN: 1755-4535; 1755-4543; 1755-4543
• DOI: 10.1049/iet-pel.2013.0402

This study investigates the energy transmission process of the Sepic converter in each of its operating modes. In this converter, the continuous conduction mode (CCM) is classified into two complete inductor supply mode (CISM) and incomplete inductor supply mode (IISM). The discontinuous CM (DCM) of the converter just contains an interval of IISM. The equivalent critical inductances between CISM–IISM and CCM–DCM are calculated in this study. In addition, for a specific range of input voltage and load resistance, the minimum and maximum values of the equivalent critical inductances are obtained. The minimum and maximum values of the equivalent critical inductances are calculated in such a manner that the converter operates in one of CISM-CCM, IISM-CCM and IISM-DCM in whole of the operational area. The experimental results are used to prove the validity of the presented theoretical subjects.