Othmane Abdelkhalek

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In this paper, the instability of output voltage of three-phase single stage seven level neutral point clamped inverter for stand-alone PV system is treated. In order to obtain the inverter output voltage at constant value under variations of both PV array voltage and load, authors propose to introduce a clamping bridge circuitry and a linear regulator. The(More)
In this paper two configurations of photovoltaic energy conversion using the NPC three levels inverter for stand-alone application are proposed and their performances compared. The first cascade uses separate PV sources and the second configuration use only one PV generator. Without a DC/DC converter used in these two studied cases, and in order to get a(More)
This paper presents a shunt active power filter to compensate reactive power and reduce the unwanted harmonics. A shunt active filter is realized employing three-phase voltage source inverter (VSI) bridge with common DC bus condenser. The shunt active filter acts as a current source, which is connected in parallel with a nonlinear load and controlled to(More)
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