Performance Evaluation of isolated and non-isolated panel integrated DC-DC converter based on switching characteristics
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Abstract
DC-DC converters are used in many power electronics applications including PV integrated system to boost the voltage to the required level. Many isolated and nonisolated DC-DC converter topologies are used to improve the performance of the PV system. Based on the voltage level and conversion efficiency suitable topology is selected for an application. Performance of the DC-DC converter is evaluated based on inrush current, settling time, switching time, switching losses, switching stress, power output, filter requirement and conversion efficiency. It is very much important to select an appropriate topology for a desired application considering the above parameters. In this work, design and analysis of non-isolated and isolated converters namely conventional boost converter, boost converter with interleaved operation, flyback converter and flyback converter with interleaved operation is evaluated for 200W PV integrated DC-DC converter system. Switching characteristics and its effect on efficiency of power converters is evaluated.