Operation of Static Series Compensator Under Distorted Utility Conditions

Awad, Hilmy; Nelsen, H.; Blaabjerg, Frede; Newman, Michael

doi:10.1109/tpwrs.2004.841238

Cited by 24 publications

(10 citation statements)

References 15 publications

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“…In addition, to ensure a proper operation of the UPQC, the voltage across the common DC-link capacitor must be higher than peak-to-peak value of supply voltage. Besides, in order to achieve the harmonic voltage and current compensation, a complex control system and a large number of sensors at S v , L i , Sr v , F i , and dc V are generally required [8][9][10][11]. These problems result in a high system cost of UPQC and limit the application of UPQC in practice.…”

Section: Configuration Of Conventional Three-phase Upqcmentioning

confidence: 99%

“…3. Unlike the complex control scheme in the shunt APF of the traditional UPQC, which requires information of load current, shunt APF current, and DC-link voltage [8], the control strategy in Fig. 3 is simpler, which demands the information of the supply current and the DC-link voltage.…”

Section: Control Of the Shunt Apfmentioning

confidence: 99%

“…Meanwhile, series APFs [8] and dynamic voltage restorers [9] are used for voltage distortion and voltage sag compensation. These compensating devices are effective solutions, but most of them can only deal with one or two power quality issues.…”

Section: Introductionmentioning

confidence: 99%

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Low Cost and High Performance UPQC with Four-Switch Three-Phase Inverters

Trinh¹,

Lee²

2015

Journal of Electrical Engineering and Technology

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-This paper introduces a low cost, high efficiency, high performance three-phase unified power quality conditioner (UPQC) by using four-switch three-phase inverters (FSTPIs) and an extra capacitor in the shunt active power filter (APF) side of the UPQC. In the proposed UPQC, both shunt and series APFs are developed by using FSTPIs so that the number of switching devices is reduced from twelve to eight devices. In addition, by inserting an additional capacitor in series with the shunt APF, the DC-link voltage in the proposed UPQC can also be greatly reduced. As a result, the system cost and power loss of the proposed UPQC is significantly minimized thanks to the use of a smaller number of power switches with a lower rating voltage without degrading the compensation performance of the UPQC. Design of passive components for the proposed UPQC to achieve a good performance is presented in detail. In addition, comparisons on power loss, overall system efficiency, compensation performance between the proposed UPQC and the traditional one are also determined in this paper. Simulation and experimental studies are performed to verify the validity of the proposed topology.

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Section: Configuration Of Conventional Three-phase Upqcmentioning

confidence: 99%

Section: Control Of the Shunt Apfmentioning

confidence: 99%

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Low Cost and High Performance UPQC with Four-Switch Three-Phase Inverters

Trinh¹,

Lee²

2015

Journal of Electrical Engineering and Technology

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“…The SSC commercially known as dynamic voltage restores [7] is a power electronic based compensator injecting missing voltage to restore the load supply voltages during a voltage dip. If active power is supplied to the load from the SSC, it needs a source for this energy.…”

Section: Topologies Of the Sscsmentioning

confidence: 99%

“…The studies in the literature related to the SSCs [7] have used topologies with energy storage [3, 7 -10]. However, a few studied the no-storage topology [11 -14], generally the topologies with conventional uncontrolled diode bridge rectifiers have been reported.…”

Section: Introductionmentioning

confidence: 99%

Using active power factor correction (PFC) boost rectifiers for an improved topology of static series compensators with no energy storage

Meral

2012

IET Power Electron.

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Static series compensator (SSC) topologies including shunt connected power electronic rectifier with no energy storage have some potential advantages such as an extra saving and the ability exists to compensate longer dips. However, this topology has the disadvantage that the uncontrolled DC link is connected to the supply with a shunt rectifier during the fault, and more importantly, the conventional diode bridge rectifier (C-DBR) does not draw sinusoidal current from the supply and inject current harmonics to the network. In this study, an improved topology for the SSCs using a single-switch active power factor correction (A-PFC) boost rectifier is proposed. Single-phase SSC topologies with load side shunt connected C-DBR and A-PFC are compared by obtaining the results for the DC-link voltages, the supply currents and the load voltages. The results show that the proposed new topology offers solutions to problems of the topology including C-DBR such as supply current harmonics and uncontrolled DC-link voltage and so a considerable performance improvement is achieved by using the proposed SSC topology.

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