High Gain Single Switch DC/DC Converter Adopting Switched Capacitor Cells for Standalone Applications
نویسنده
چکیده
Energy shortage and environmental contamination in the present scenario has increased the use of renewable energy sources.Among the renewable energy sources the photovoltaic cells plays a significant role in meeting the energy requirements. The problem associated with the PV cells are it produces low output voltage and thus a high step-up dc dc converter is essential to boost the low voltage of a PV to obtain high bus voltage for the downstream dc ac gridconnected inverter. The converter proposed here is a combination of two types of converters which has the advantages switched-capacitor (SC) converter to produce high voltage gain and excellent output regulation of a switching mode dc dc converter. The basic idea of a voltage multipliercircuit and regulation of switched mode dc dc converter is adopted here.When the switch is turned on, the inductor is charged, and the capacitors are connected in series to supply the load, and the inductor releases energy to charge multiple capacitors in parallel when the switch is turned off whose voltages are controlled by a pulse width modulation technique. Thus a dc dc converter can be obtained with high voltage gain and good regulation.
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