Derivation of a family of high step‐up tapped inductor SEPIC converters

Abstract

A family of single-switch SEPIC-derived converters, which apply a tapped inductor (TI), a charge pump (CP) and an inductorless regenerative snubber to attain a high DC step-up at high efficiency is introduced. The proposed converter family has the advantage of continuous input current, which can be helpful in attaining accurate tracking of the maximum power point of solar panels. The feasibility of the proposed topology is verified by simulation and experimental results.

Passive Regenerative and Dissipative Snubber Cells for Isolated SEPIC Converters: Analysis, Design, and Comparison

“…(10) For both DCM and CCM, L eq is the equivalent inductance of the converter, equal to the parallel combination of…”

“…Hence, knowing that the design criteria for DCM already neglects the seventh stage, though the same expressions for DCM can be used to define the snubber for CCM operation. The only necessary modification is to change current I T in equations (63) and (65) for the CCM current relation given by (10).…”

“…The main waveforms are presented in 16. The snubber design for CCM is the same as for DCM but, once again, applying the CCM corresponding I T current from (10). The voltage across S is clamped around the same value as with the regenerative snubber.…”

“…In order to cope with high stray inductances passive regenerative snubbers for SEPIC have been proposed such as presented in [10]- [13]. However, most of them are used in transformerless versions or their addition compromises the isolation.…”

Performance analysis of PI and Fractional order PI Controlled Quadratic Boost Converter System using MATLAB/Simulink

“…These inductor coupled converters are very much suited for distributed generation applications. Various other topologies that involve inductor coupled converters are explained in [2][3][4][5][6][7][8][9][10]. This inductor coupled transformers are bulkier in…”