PV Cell Fed High Voltage Gain DC-DC Converter for Grid Converter Applications
Abstract
Low voltage photovoltaic systems require highly efficient converters to deliver as much as possible energy to the load with high gain DC voltage conversion. This concept presents two efficient step-up DC/DC converters one composed of five identical phases driven interchangeably and latter partial parallel isolated converter with voltage double. Experimental validation of theoretical assumption and discussion on power losses has been carried out. The use of silicon carbide components and current sharing technique assures high efficiency within wide power range. The proposed concept can be implemented to pv cell fed dc-dc converter for grid connected applications by using Matlab/Simulink software.
Index Terms-DC-DC converter, High step-up, coupled
inductor, ground leakage current.
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