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There has been an increasing interest in transformerless inverter for grid-tied photovoltaic (PV) system due to low cost, high efficiency, light weight, etc. Therefore, many transformerless topologies have been proposed and verified with real power injection only. Recently, almost every international regulation has imposed that a definite amount of reactive power should be handled by the grid-tied...
This paper proposes a new high efficiency single phase transformerless grid-tied photovoltaic (PV) inverter by using super-junction MOSFETs as main power switches. No reverse recovery issues are required for the main power switches and the blocking voltages across the switches are half of the DC input voltage in the proposed topology. Therefore, the super-junction MOSFETs have been used to improve...
Transformer-less inverters are more attractive for grid-tied photovoltaic (PV) system due to its higher efficiency and lower cost. But unfortunately, a leakage current flows through the system. So transformer-less PV inverter have to be tackled carefully. In this paper, a new transformerless PV inverter topology with low leakage current has been proposed. Proposed circuit structure and detail operation...
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