Results 31 to 40 of about 733,401 (250)
The influence of motor reacceleration on voltage sags [PDF]
IEEE Transactions on Industry Applications, 1995 The assumption that a voltage sag is rectangular is not correct in a power system with large induction motor loads. The motors decelerate during the short circuit. After fault-clearing, they will accelerate again, drawing a high reactive current from the supply, causing a prolonged postfault voltage sag. This is aggravated by the removal of branches by
openaire +2 more sources
Eletrônica de Potência, 2021 In this paper, a wind energy conversion system based on doubly-fed induction generator with an additional series grid side converter without transformer is proposed.
Ítalo A. Cavalcanti de Oliveira +2 more
doaj +1 more source
SRAT-distribution voltage sags and reliability assessment tool [PDF]
, 2004 Interruptions to supply and sags of distribution system voltage are the main aspects causing customer complaints. There is a need for analysis of supply reliability and voltage sag to relate system performance with network structure and equipment design ...
Ledwich, Gerard F., Koner, Prabhat K.
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Fast Transient Hybrid Neuro Fuzzy Controller for STATCOM During Unbalanced Voltage Sags [PDF]
AUT Journal of Electrical Engineering, 2018 A static synchronous compensator (STATCOM) is generally used to regulate voltage and improve transient stability in transmission and distribution networks. This is achieved by controlling reactive power exchange between STATCOM and the grid.
R. Zaheri Abdevand +3 more
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A Voltage Sag Pattern Classification Technique [PDF]
, 2005 This paper presents an investigation on pattern classification techniques applied to voltage sag monitoring data. Similar pattern groups or sets of classes, resulting from a voltage sag classification, represent disturbance categories that may be used as indexes for a cause/effect disturbance analysis.
Délio E. B. Fernandes +2 more
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Mitigation of Voltage Sags in CIGRE Low Voltage Distribution Network [PDF]
, 2013 Any problem in voltage in a power network is undesirable as it aggravates the quality of the power. Power electronic devices such as Voltage Source Converter (VSC) based Static Synchronous Compensator (STATCOM), Dynamic Voltage Restorer (DVR) etc.
Mustafa, Ghullam +7 more
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Propagation of Voltage Sags and Under-voltages through Scott Transformers
, 2021 Scott transformers are a class of equipment thatconverts three-phase power into two-phase, four-phase and eventhree-phase power and vice versa. This paper investigates howvoltage sags originating from the main three-phase networkpropagate through these ...
Catalin Iosif Ciontea +3 more
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Eletrônica de Potência, 2019 Wind turbines are widespread around the globe, and the number of windfarms connected to the grid is continually increasing. The Doubly-Fed Induction Generator (DFIG) plays an important role, since it is one of the most used configurations for wind power
Joacillo L. Dantas +4 more
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Energy Conversion and Economics, 2022 Voltage sags flickers, and harmonics are major problems associated with power quality and are of concern to power companies and consumers. Therefore, efforts to improve power quality have increased. This study explores the dynamic performance of a static
Mohammed Redha Qader
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Embedded Direct Ink Writing of Thermoset and Elastomeric Polymers via Frontal Polymerization
Advanced Functional Materials, EarlyView.Embedded frontal polymerization direct ink writing (FP‐DIW) combines frontal ring‐opening metathesis polymerization with embedded 3D printing to decouple deposition from curing. A yield‐stress support bath stabilizes low‐viscosity inks, while on‐demand thermal initiation enables controlled front propagation. This approach expands the accessible feature
Mohammad Tanver Hossain +12 more
wiley +1 more source