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This paper presents a new and efficient control scheme which adopted the voltage source inverter to decrease current harmonics generated by the nonlinear load. The sliding mode control is used in the current control loop to achieve fast dynamics and a simple proportional-integral controller is adopted in the outer voltage control loop to achieve slow dynamics. The proposed scheme implements simplified...
This paper describes a novel sliding mode method with the fuzzy controller approach in the development of unified power quality conditioner (UPQC) for reactive power, harmonics and both symmetric and asymmetric sag and swell compensation. The UPQC consists of both shunt and series converter having a common dc link. The shunt converter eliminates current harmonics generated from the nonlinear load...
This paper presents a cascaded multilevel Voltage Source Inverter (VSI) based three-phase shunt Active Power Filter (APF). The active filter is applied for power quality enhancement in the distribution grid in terms of harmonic compensation. The compensation method is proposed by sinusoidal extraction controller, which is comprised of positive-sequence voltage detector and instantaneous real-power...
This article explores design and analysis of instantaneous power theory with proportional integral derivative (PID) based Shunt Active Power Line Conditioners (APLC). This APLC compensates the reactive and harmonic currents drawn by the non-linear load besides power factor correction. The objective is to study different control strategies for real time compensation of current harmonics at different...
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