Modified Nodal Analysis Based Modeling of DC-DC SEPIC Converter with Coupled Inductors

In current power electronics applications of advancing energy efficiency, DC/DC converters hold paramount importance. This paper proposes an efficient method for analysis and modeling of the Single-Ended Primary Inductance Converter (SEPIC), a DC-DC converter widely employed in industrial applications and renewable energy systems. Using the Modified Nodal Analysis (MNA) method, it is presented the modeling of SEPIC with coupled inductors, followed by an in-depth analysis using the Trapezoidal method. Simulations are conducted to explore the system's behavior under diverse input parameters. Furthermore, a binary resistor model, minumum resistane in on-state and maximum resistance in off-state, for semiconductor modeling in the analysis of SEPIC with coupled inductors. The study not only sheds light on the intricacies of SEPIC but also underscores its potential in advancing energy-efficient solutions.