Journal ArticleDOI
A detailed comparison of system topologies for dynamic voltage restorers
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TLDR
In this article, four different system topologies for dynamic voltage restorers (DVRs) are analyzed and tested, with particular focus on the methods used to acquire the necessary energy during a voltage sag.Abstract:
In this paper, four different system topologies for dynamic voltage restorers (DVRs) are analyzed and tested, with particular focus on the methods used to acquire the necessary energy during a voltage sag. Comparisons are made between two topologies that can be realized with a minimum amount of energy storage, with energy taken from the grid during the voltage sag, and two topologies that take energy from stored energy devices during the voltage sag. Experimental tests using a 10-kVA DVR show that the no-energy storage concept is feasible, but an improved performance can be achieved for certain voltage sags using stored energy topologies. The results of this comparison rank the no-storage topology with a passive shunt converter on the load side first, followed by the stored energy topology with a constant dc-link voltage.read more
Citations
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Journal ArticleDOI
Fault Ride-Through of a DFIG Wind Turbine Using a Dynamic Voltage Restorer During Symmetrical and Asymmetrical Grid Faults
TL;DR: In this article, the application of a dynamic voltage restorer (DVR) connected to a wind-turbine-driven doubly fed induction generator (DFIG) is investigated.
Journal ArticleDOI
A Fault Tolerant Doubly Fed Induction Generator Wind Turbine Using a Parallel Grid Side Rectifier and Series Grid Side Converter
TL;DR: In this paper, a unified doubly fed induction generation (DFIG) wind turbine architecture which employs a parallel grid side rectifier and series grid side converter is presented, which enables unencumbered power processing and robust voltage disturbance ride through.
Journal ArticleDOI
A Fault Ride-Through Technique of DFIG Wind Turbine Systems Using Dynamic Voltage Restorers
TL;DR: In this paper, a low-voltage ride-through technique of a doubly fed induction generator (DFIG) wind turbine system using a dynamic voltage restorer (DVR) was proposed.
Journal ArticleDOI
A dynamic voltage restorer (DVR) with selective harmonic compensation at medium voltage level
TL;DR: In this article, a selective harmonic feedback control strategy was proposed for medium-voltage DVR systems to provide voltage harmonic compensation capabilities with minimal effect on the sag compensation performance of the basic DVR, which was experimentally verified on a medium voltage (10 kV) three-phase DVR prototype under a range of conditions, including distorted supply voltages, nonlinear loads, and operation during distorted voltage sags.
Journal ArticleDOI
A review of high PV penetrations in LV distribution networks: Present status, impacts and mitigation measures
M. Mejbaul Haque,Peter Wolfs +1 more
TL;DR: In this paper, the authors provide an extensive review of the present status, impacts and technical challenges of PV penetration in low voltage (LV) distribution networks and provide a framework that systematically explores the full range of technical methods and limitations for PV impact mitigation.
References
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Book
Understanding Power Quality Problems: Voltage Sags and Interruptions
TL;DR: This is the first book to offer in-depth analysis of voltage sags and interruptions and to show how to apply mathematical techniques for practical solutions to these disturbances.
Journal ArticleDOI
Control and testing of a dynamic voltage restorer (DVR) at medium voltage level
TL;DR: In this paper, the effect of the dynamic voltage restorer (DVR) on a distribution test facility in Kyndby, Denmark is investigated under both faulted and non-faulted system states, for a variety of linear and nonlinear loads.
Proceedings ArticleDOI
Control strategies for dynamic voltage restorer compensating voltage sags with phase jump
TL;DR: In this article, different control strategies for a dynamic voltage restorer are analyzed with emphasis put on the compensation of voltage sags with phase jump, and two promising control methods are tested with simulations carried out in Saber and finally tested on a 10 kVA rated DVR in the laboratory.
Journal ArticleDOI
System and customer impact: considerations for series custom power devices
S.W. Middlekauff,E.R. Collins +1 more
TL;DR: In this article, a series device is described as having a certain percent RMS magnitude voltage injection capability, which can be graphically illustrated using magnitude versus duration matrices or curves.