Results 21 to 30 of about 240,363 (264)

Research on Thyristor Reverse Recovery Behavior in High-Voltage Direct Current Transmission Converter Valves and Its Application in Integrated Protection Systems

Energies
The performance of converter valves is essential for the reliability and efficiency of high-voltage direct current (HVDC) transmission systems. Converter valves consist of multiple thyristor levels, each requiring regular testing to ensure proper ...
Cao Wen, Liang Song, Yu Huang, Dong Peng, Peng Zhang, Jianquan Liao, Longjie Yang, Shilin Gao   +7 more
doaj   +1 more source

Overview of Various Voltage Control Technologies for Wind Turbines and AC/DC Connection Systems

Energies, 2023
Wind power generation is one of the mainstream renewable energy resources. Voltage stability is as important as the frequency stability of a power system with a high penetration of wind power generation.
Yuan-Kang Wu, Deng-Yue Gau, Trinh-Duc Tung   +2 more
doaj   +1 more source

QR-DESO-Based Active Disturbance Rejection Control for PMSGs Under Aperiodic and Periodic Disturbances

Machines
Permanent magnet synchronous generators (PMSGs) are inevitably subject to aperiodic and periodic disturbances due to complex operating conditions and internal coupling effects.
Junpeng Cheng, Yihua Zhu, Chao Luo, Jiawei Yu, Wenzhe Hao, Guangqi Li, Zhiyong Dai   +6 more
doaj   +1 more source

The Interest of the Wind Farm of Adrar to the Southwest Network of Algeria [PDF]

Iranica Journal of Energy and Environment, 2019
The interest in renewable energy has been increasing over the last few years, especially after global awareness regarding the hazardous effect of fossil fuel burning.
G. Hocine, L. Fatiha, G. F. Zohra, A. Tayeb   +3 more
doaj   +1 more source

A Comprehensive Review of Fault Identification, Protection, and Localization Strategies in HVDC Transmission Systems

IEEE Access
High Voltage Direct Current (HVDC) transmission systems are highly significant in transporting high power at great distances, interconnecting asynchronous grids, and linking large-scale sources of renewable energy.
B. Mahalakshmi, K. Iyswarya Annapoorani
doaj   +1 more source

S-Transform Based Traveling Wave Directional Pilot Protection for Hybrid LCC-MMC-HVDC Transmission Line

Energies, 2022
In this paper, the traveling wave protection issue of a hybrid high-voltage direct-current transmission line based on the line-commutated converter and modular multilevel converter is investigated.
Wei Zhang, Dong Wang
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

Magnetic linear driving method for high-voltage direct current inspection robot

International Journal of Advanced Robotic Systems, 2020
Faced with the problem of frequent slippage of the wheel-arm inspection robot in overhead high-voltage transmission lines, a magnetic linear drive method, based on high-voltage direct current (HVDC) magnetic field, is proposed: The ampere force of an ...
Xian Jin Xu, Hao Da Chen, Zhi Yong Yang, Shi Chao Hu, Yu Yan   +4 more
doaj   +1 more source

Genomic Diversity and Clinical Variability in Pediatric Primary Cutaneous Anaplastic Large Cell Lymphoma: A Case Series

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary cutaneous anaplastic large cell lymphoma (pcALCL) is a rare pediatric CD30‐positive T‐cell lymphoproliferative disorder with an excellent prognosis, but its genomic drivers are poorly defined. We report three children with skin‐limited disease demonstrating striking molecular heterogeneity, including NPM::ALK, NUP214::FRK, and a novel ...
Shoshana Greenberger, Efrat Bar‐Ilan, Victoria Marcu, Evgeny Grishin, Rinat Yacobi, Aviv Barzilai, Hana Golan, Assaf Arie Barg   +7 more
wiley   +1 more source

Central Nervous System Neuroblastoma, FOXR2‐Activated: A Pooled Analysis of Published Clinical Outcomes

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan, Mohamed S. Abdelbaki   +1 more
wiley   +1 more source