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This article proposes the analysis of the quality of the power provided by two commercial photovoltaic inverters. Initially the inverters are analyzed based on the recent regulations, afterwards the equipment is compared based in the measurement of the distortion rates and power factor during the analyzing period.
This paper brings the PV model of a real PV farm installation with a total power of 917 kW. All the elements of the PV farm (panels and inverter) are described. Simulation on PSCAD and experimental results at the installation are reported. The PV model is submitted to voltage sags originated in the grid as well as their impact on the photovoltaic power plant.
Voltage sags are among the most important power quality problems affecting sensi-tive industrial equipment, including control panels. one or several units of programmable logic control-lers (PlCs), contactors, and adjustable-speed drives (asDs) are present in an industrial control panel, and all of these are sensitive to voltage sags. When a voltage sag occurs, contactors may trip, and one or more...
Dynamic voltage compensators have been playing important role in the protection of sensitive loads against disturbances, as voltage sags and swells. One implementation option for such equipment is based on the use of a conventional three-phase inverter, which is not able to inject zero sequence components. This paper evaluates the performance of a dynamic sag compensator without zero sequence injection...
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