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With the rapid development of photovoltaic system installations and increased number of grid connected power systems, it has become imperative to develop an efficient grid interfacing instrumentation suitable for photovoltaic systems ensuring maximum power transfer. The losses in the power converter play an important role in the overall efficiency of a PV system. Chain cell converter is considered...
A low cost utility interactive inverter is valuable to the residential PV or fuel cell distributed generations. This paper presents a low cost solution to the single-phase grid-connected inverters, including the inverter topology, filter structure, and the current control methods. The reason for choosing the proposed converter topology is given. A novel current control method using the combinatorial...
A novel soft switched ac-link buck-boost converter for interfacing grounded solar photovoltaic power sources to the utility grid without transformers or common mode filters in a direct-connected configuration is proposed. Power transfer from input to output is accomplished via a link inductor which is charged from the input phases through AC switches, then discharged to the output phases with a precisely...
In this paper, the phenomena that occurs when connecting a PV energized micro-grid to the public grid, is presented. A PV inverter system, for supplying the micro-grid, was designed and simulated using Matlab-Simulink. The simulations are done for three different power factors, showing in this way how the power factor can influence the behavior of the system, especially when the transitory regime...
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