D. Coutellier, V. G. Agelidis, S. Choi, "Experimental Verification of Floationg-Output Interleaved-Input DC-DC High-Gain Transformer-less Converter Topologies", IEEE Power Electronics Specialist Conference, pp. 562-568, June 2008, Rhodes island, Greece.
Abstract : In transformer-less fuel-cell energy conversion
systems the voltage-gain is required to be as high as
possible. Although component parasitic elements limit the
practically realizable voltage-gain of any converter
topology, this becomes a critical issue in the case of the basic
step-up converter. In this paper, a comparative evaluation
of two high-voltage-gain interleaved step-up derived
converter topologies suitable for fuel-cell applications is
documented. Both converter topologies offer lower inputcurrent/output-voltage
ripple and lower voltage/current
ratings of the various circuit elements when compared to the
basic step-up topology. Analysis and simulation results are
provided and experimental results taken from low power
laboratory prototypes are presented.