UPQCUnified Power Quality Conditioner
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(ii) UPQC provides the VAR requirement of the load, so that the supply voltage and current are always in phase; therefore, no additional power factor correction equipment is required.
(iii) UPQC maintains load end voltage at the rated value even in the presence of supply voltage sag.
Ozdemir, "Synchronous-reference-frame-based control method for UPQC under unbalanced and distorted load conditions," IEEE Transactions on Industrial Electronics, vol.
A simple circuit model of the UPQC is shown in Fig.
As mentioned earlier first order load active and reactive powers can be easily attended in the electromechanically compensated share of load current for decrease of SAF and PAF power range of UPQC. This problem can control power flow as well as power quality.
In mentioned control strategy, voltage harmonics have been compensated by SAF of the UPQC and current harmonics with higher order than 7, have been compensated by PAF.
This waveform represents the receiving end current when the UPQC device is connected to the system.
This paper presents a review on the UPQC to enhance the electric power quality at distribution level.
Voltage sag/swell and load reactive power compensation using UPQC [7].
"Power Quality Improvement By UPQC Using ANN Controller," International Journal of Engineering Research and Applications (IJERA) 2(4): 2019-2024.
A unified power quality conditioner (UPQC) consists of a series and a shunt unit with a common DC energy storage capacitor as shown in Fig.
A New Proposal for Power Quality and Custom Power Improvement: OPEN UPQC. IEEE Transactions on Power Delivery, 24(4): 2107-2116.