Abstract
Grid tied operation is a working scheme of photovoltaic power system operating together with utility power grid to supply electric power to the load. In a grid connected photovoltaic system, the energy management can be applied to optimize energy utilization of photovoltaic system while keeping high reliability of power supply to the power load. Compared to voltage source inverter system, the grid connected photovoltaic system using current source inverter offers some merits such as higher quality of AC current, higher reliability of inverter, and high power factor operation. This paper discusses and analyzes characteristics of DC current component injection in a grid tied photovoltaic system using H-bridge current source inverter and transformer. Some data were presented and discussed to explore the characteristics of DC current injection of a grid connected H-bridge CSI.
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