I3E Technologies, #23/A, 2nd Floor SKS Complex, Opp. Bus Stand, Karur-639 001. IEEE PROJECTS AVAILABLE, NON-IEEE PROJECTS AVAILABLE, APPLICATION BASED PROJECTS AVAILABLE, MINI-PROJECTS AVAILABLE. Mobile : 99436 99916, 99436 99926, 99436 99936 Mail ID: i3eprojectskarur@gmail.com Web: www.i3etechnologies.com, www.i3eprojects.com

1. ANALYSIS OF THE INTERLEAVED ISOLATED BOOST CONVERTER WITH
COUPLED INDUCTORS
ABSTRACT
This paper analyzes the interleaved boost with coupled inductors (IBCI) converter, which
is an isolated topology that is suitable for high step-up applications. Two main contributions are
given: an exhaustive steady-state analysis and an accurate small-signal model. The former allows
for deriving a closed-form non iterative design procedure for the power-stage active and passive
components. In addition, it reveals an interesting equivalence with an apparently different
converter, i.e., the single active bridge. Subsequently, the IBCI converter dynamic behavior is
investigated, deriving a nonlinear average model that, under small-signal approximation, can be
linear zed around a given operating point and used for feedback controller design. A single
photovoltaic module interface converter, rated for 300-W output power, is considered as a case
study to validate the analysis outcome and the design procedure. Both are fully validated by
measurements taken on the laboratory prototype.