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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Spiazzi, G. Mattavelli, P. Gazoli, J.R. Magalhaes, R. Frattini, G. |
| Copyright Year | 2010 |
| Description | Author affiliation: Dept. of Information Engineering - University of Padova - Via Gradenigo 6/b, 35131 Padova, Italy (Spiazzi, G.) || Divisao de Eletrônica Aeroespacial - INPE/MCT Instituto Nacional de Pesquisas Espaciais, Sao Jose dos Campos - CEP 12227-010, Brazil (Magalhaes, R.) || Dept. of Technology and Management of Industrial Systems - University of Padova - Stradella S. Nicola 3, 36100 Vicenza, Italy (Mattavelli, P.) || NSLAbs Italy - National Semiconductor Srl Strada 7, Palazzo R/3, 20089 Rozzano (MI), Italy (Frattini, G.) || Dept. of Energy Control and Systems - University of Campinas, Brasil (Gazoli, J.R.) |
| Abstract | 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. |
| Starting Page | 1169 |
| Ending Page | 1174 |
| File Size | 718184 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424456956 |
| e-ISBN | 9781424456970 |
| e-ISBN | 9781424456963 |
| DOI | 10.1109/ICIT.2010.5472596 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-03-14 |
| Publisher Place | Chile |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Circuit topology Diodes Clamps Switches Stress Voltage Power electronics Renewable energy resources Photovoltaic systems Solar power generation coupled inductors High step-up ratio converters renewable energy parasitic components |
| Content Type | Text |
| Resource Type | Article |
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