%0 Conference Proceedings
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3F6GF6B
%B International Conference on Industrial Technology, (ICIT).
%X High step-up ratio converters for low-voltage high-current energy sources are nowadays the focus of an intensive research activity by the power electronics community, thanks to the increasing interest for renewable energy sources like those based on photovoltaic modules and fuel-cells. One interesting topology presented in literature is based on the combination of a boost section and a flyback one, featuring the possibility to boost the output voltage while keeping the switch voltage stress at a reasonable level. However, the basic integrated boost-flyback (IBF) topology suffers of parasitic oscillations caused by the transformer leakage inductances and the diode parasitic capacitance. These oscillations require a suitable dissipative clamp circuit to reduce the diode voltage stress, thus adversely affecting the overall converter efficiency. In this paper, a clamping diode is added to the original IBF topology that naturally clamp these parasitic oscillations, and make the converter operation more similar to that of the IBF converter with voltage multiplier. It is also shown that a resonance occurs that helps to increase the converter's voltage gain. Experimental results taken from a 300W rated prototype are included, showing a good agreement with the theoretical expectations.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%T Improved integrated boost-flyback high step-up converter
%@isbn 978-1-4244-5697-0
%@secondarytype PRE CI
%K Coupled inductors, High step-up ratio converters, Parasitic components, Renewable energy Index,  Clamp circuit, Clamping diode, Converter efficiency, Coupled inductor, Diode voltage, Flyback, High-current, Intensive research, Leakage inductance, Low-voltage, Output voltages, Parasitic capacitance, Parasitic components, Parasitic oscillations, Photovoltaic modules, Renewable energies, Renewable energy source, Step-up converter, Step-up ratio, Switch voltage, Voltage gain, Voltage multipliers.
%8 14 - 17 Mar. 2010
%@usergroup administrator
%@usergroup marciana
%@group
%@group
%@group
%@group DEA-ETE-INPE-MCT-BR
%3 Spiazzi_Improved.pdf
%J Piscataway
%@secondarykey INPE--PRE/
%2 sid.inpe.br/mtc-m19/2011/02.18.11.08.40
%@affiliation Dept. of Information Engineering, University of Padova, Via Gradenigo 6/b, 35131 Padova, Italy
%@affiliation Dept. of Technology and Management of Industrial Systems, University of Padova, Stradella S. Nicola 3, 36100 Vicenza, Italy
%@affiliation Dept. of Energy Control and Systems, University of Campinas, Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation NSLAbs. Italy, National Semiconductor Srl, Strada 7, Palazzo R/3, 20089 Rozzano (MI), Italy
%I IEEE
%P 1169-1174
%4 sid.inpe.br/mtc-m19/2011/02.18.11.08
%@documentstage not transferred
%D 2010
%1 The Institute of Electrical and Electronics Engineers (IEEE), IEEE Industrial Electronics Society (IES), Universidad Tecnica Federico Santa Maria, University of Seville
%V Article number 5472596
%@doi 10.1109/ICIT.2010.5472596
%S Proceedings
%A Spiazzi, G,
%A Mattavelli, P.,
%A Gazoli, J. R.,
%A Magalhaes, R.,
%A Frattini, G.,
%C Vina del Mar
%@area ETES