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A non-isolated DC-DC converter is presented, based on the current diverter principle. The converter is foreseen for larger photovoltaic plants or other DC collection networks for renewable energy sources. The topology allows the DC-DC conversion as step-up converter typically from LV to MV levels. The Multistage Stacked Boost Architecture allows a conversion to voltage levels higher than the blocking...
Medium-voltage (MV) high-power converters are usually realized using high-voltage semiconductors (3.3kV, 4.5kV or 6.5kV) operated with low-switching frequencies in the range of several hundred Hz and under hard-switching conditions. However, for medium-voltage high-power DC-DC converters employing transformer for galvanic isolation, it is attractive to increase switching frequency in order to reduce...
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