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The problem of ever-increasing energy demand and depletion of conventional resources is well known. In order to meet this growing demand, residential rooftop Photovoltaic (PV) systems, which can cater to the household demand and also supply excess power to the grid, are being encouraged. In this paper, a two-stage transformerless single-phase grid-tied PV system for residential rooftop application...
Active power decoupling (APD) topologies are well known for improving the reliability of a single-phase inverter by eliminating the need for electrolytic capacitors at the DC-link. In this paper, several APD topologies are analysed for grid connected PV application, where, the common mode leakage currents are one of the main concerns. It is found that few APD topologies can minimize these leakage...
A novel full-bridge single-phase neutral point clamped (NPC) transformerless inverter for grid-connected photovoltaic system is proposed in this paper with the intent to improve the reliability and reduce the common-mode leakage current. The proposed inverter incorporates two coupled inductors along with series connected switch on ac side that operate alternately in positive and negative half period...
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