Results 31 to 40 of about 78,969 (302)

СURRENT FILTERING IN A THREE-PHASE THREE-WIRE POWER SYSTEM AT ASYMMETRIC SINUSOIDAL VOLTAGES

Electrical engineering & Electromechanics, 2018
Purpose. Investigation of the optimal current distribution between source, shunt active filter and reactive compensator of a three-phase three-wire system that provides consumption of a sinusoidal symmetric current under asymmetric source voltages with ...
M. Yu. Artemenko, L. M. Batrak, S. Y. Polishchuk   +2 more
doaj   +1 more source

A Study of Symmetrical and Unsymmetrical Short Circuit Fault Analyses in Power Systems

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
In this study, thecommon symmetrical and unsymmetrical short circuit faults in power systems areanalyzed detailed. Unlike the similar studies in the literature, metallic faultconditions for unsymmetrical faults are also given in the paper additionally ...
Yılmaz Yıldırım, Faruk Yalçın
doaj   +1 more source

Extended properties of nonlinear power system models that are symmetrically configured in the narrow sense

International Journal of Electrical Power & Energy Systems
Three-phase circuits that are Symmetrically Configured in the Narrow Sense (SCNS) have been defined in previous works as circuits which dq0 dynamic model does not depend on the transformation’s reference angle.
Elior Segev, Vladimir Zhuk, Elinor Ginzburg-Ganz, Juri Belikov, Yoash Levron   +4 more
doaj   +1 more source

Analysis of the Possibilities of Selective Detection of a Single Line-to-Ground Fault in a Medium Voltage Network with Isolated Neutral

Energies, 2021
The paper analyses how the characteristics of the medium-voltage network with insulated neutral and the conditions under which the single line-to-ground fault occurs (insulation condition and value of the fault resistance) influence the zero-sequence ...
Dumitru Toader, Maria Vintan, Claudiu Solea, Daniela Vesa, Marian Greconici   +4 more
doaj   +1 more source

Application of Magnitude and Phase Angle to Boundary Area-Based Algorithm for Unbalance Relay Protection Scheme in 115-kV Capacitor Bank

IEEE Access, 2021
Identification of fault locations in capacitor banks is still under development. Although, faults in capacitor banks can be detected by an unbalance relay, it cannot identify the fault location.
Praikanok Lertwanitrot, Atthapol Ngaopitakkul   +1 more
doaj   +1 more source

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

Energies, 2020
Faults in electrical networks are among the key factors and sources of network disturbances. Control and automation strategies are among the key fault clearing techniques responsible for the safe operation of the system. Several researchers have revealed
Aphrodis Nduwamungu, Etienne Ntagwirumugara, Francis Mulolani, Waqar Bashir   +3 more
doaj   +1 more source

Fault-Tolerant Controller Applied to a Wind System Using a Doubly Fed Induction Generator

Wind
Wind systems are sustainable and economical options for producing electrical energy. These systems efficiently manage the power flow by maximizing wind power and consuming reactive power from the grid.
Onofre Morfín, Diego Delgado, Alan Campos, Miguel Murillo, Jesús I. Hernández, Pedro Esquivel   +5 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Performance Investigation of Three-Phase Three-Switch Direct PWM AC/AC Voltage Converters

IEEE Access, 2019
Reducing the number of active switches is substantial for obtaining a simple, reliable, high-efficiency, and cost-effective AC/AC voltage converter. In this paper, two topologies of three-phase direct PWM AC/AC voltage converter are proposed.
Said A. Deraz, Haitham Z. Azazi, Mohamed S. Zaky, Mohamed K. Metwaly, Mohammed E. Dessouki   +4 more
doaj   +1 more source

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source