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This paper presents a unified power quality conditioner (UPQC) and its control strategy for assisting the fault ride-through operation of large-scale photovoltaic (PV) power station. The output voltage of PV station can be controlled to its rated value with UPQC under high grid voltage fault condition. Moreover, it can absorb reactive power from the grid under high voltage condition to support the...
In this paper, a universal active power filter is proposed for harmonic and reactive power compensation in the single-phase to three-phase systems. The proposed configuration solves a typical problem found in remote (or rural) applications, where only a single-phase grid is available and there is a demand to supply three-phase loads. A suitable control strategy is presented to regulate the load voltage,...
Configuration of static var compensator (SVC) in the distributed grid with DGs is a widely adopted and effective measure to improve the power quality. As SVC itself is harmonic source, the paper proposed to add harmonic compensation link in the current inner loop of DG grid-connected inverter on the premise of not increasing hardware cost, in order to suppress the harmonic generated by local load...
In this paper, an active power line conditioner is conceived for harmonic and reactive power compensation in the single-phase to three-phase systems. The proposed system is divided into two classes: a) parallel active power filter at the single-phase grid side; and b) series active power filter at the three-phase load side. Compared with conventional five-leg single-phase to three-phase converter,...
This paper presents a control system that combines photovoltaic (PV) grid-connected generation and power quality managements. With the proposed structure, the system can not only realize photovoltaic generation, but also suppress current harmonics, compensate reactive power, eliminate voltage sags or swells and mitigate instantly power interruption and other power quality problems. An adaptive predictive...
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