Results 11 to 20 of about 5,878 (185)

Sub-THz Waveguide Spectroscopy of Coating Materials for Particle Accelerators

Condensed Matter, 2020
The electromagnetic characterisation of different materials for the inner wall coating of beam pipes is a long-standing problem in accelerator physics, regardless the purpose they are used for, since their presence may affect in an unpredictable way the ...
Andrea Passarelli, Can Koral, Maria Rosaria Masullo, Wilhelmus Vollenberg, Lucia Lain Amador, Antonello Andreone   +5 more
doaj   +1 more source

Bad Data Detection and Identification of Hybrid AC/DC Power Systems with Voltage Source Converters Using Deep Belief Network and K-Means Clustering

Elektronika ir Elektrotechnika, 2019
The widespread use of Voltage Source Converter based High Voltage Direct Current Transmission (VSC-HVDC) technology has significantly increased the complexity of grid configuration and operation, which demands higher quality of AC/DC state estimation ...
Tong Zhang, Hucheng Li, Yu Huang, Mingyu Zhai, Fei Zeng   +4 more
doaj   +1 more source

Sosyodemografik yapı ve sigara kullanımının ağız kokusu üzerine etkisinin organoleptik yöntem ve halimeter® ile değerlendirilmesi

Cumhuriyet Dental Journal, 2014
Amaç: Bu çalışmanın amacı, Yakın Doğu Üniversitesi, Diş Hekimliği Fakültesine başvuran bireylerde halitozis görülme sıklığının araştırılması ve halitozis ile yaş, cinsiyet, eğitim seviyesi ve sigara kullanımı arasındaki ilişkinin incelenmesidir ...
Başak Kuşakcı Şeker, Hayriye Tumer
doaj   +1 more source

Transient stability enhancement control strategy for droop-controlled voltage source converter

Energy Reports, 2022
The droop-controlled voltage source converter (VSC) can support the voltage at the point of common coupling (PCC) and realize frequency adjustment by simulating the swing equation of the synchronous generator (SG) and has a higher stability margin in the
Jilei Wang, Xing Zhang, Qiaohua Zhu, Siyu Chen, Bo Peng   +4 more
doaj   +1 more source

Análise Comparativa Entre O Controle Direto E Indireto De Injeção De Corrente Em Um D-statcom

Eletrônica de Potência, 2006
O D-STATCOM (Distribution Static Synchronous Compensator) é em sua essência uma fonte de tensão ac onde a magnitude, o ângulo de fase e a freqüência da tensão de saída podem ser controlados.
Antonio Carlos Borre, Amaury Simões Xavier, Flávio Gonçalves da Cruz Ribeiro, Mauricio Aredes   +3 more
doaj   +1 more source

A Comprehensive Power Flow Approach for Multi-terminal VSC-HVDC System Considering Cross-regional Primary Frequency Responses

Journal of Modern Power Systems and Clean Energy, 2020
For the planning, operation and control of multiterminal voltage source converter (VSC) based high-voltage direct current (HVDC) (VSC-MTDC) systems, an accurate power flow formulation is a key starting point.
Yida Ye, Ying Qiao, Le Xie, Zongxiang Lu
doaj   +1 more source

Elective Tracheal Intubation With the VieScope—A Prospective Randomized Non-inferiority Pilot Study (VieScOP-Trial)

Frontiers in Medicine, 2022
BackgroundTracheal intubation is commonly performed after direct laryngoscopy using Macintosh laryngoscopes (MacL), but visualization of the larynx may be inadequate.
Martin Petzoldt, Yasmin Engels, Zohal Popal, Pischtaz A. Tariparast, Phillip B. Sasu, Andrés Brockmann, Mark A. Punke, Jörn Grensemann   +7 more
doaj   +1 more source

Design and implementation of an Inverse Neural Network Controller applied To VSC Converter for active and reactive Power Flow, based on regions of work

Revista Facultad de Ingeniería Universidad de Antioquia, 2014
Los Convertidores de Fuente de Tensión (VSC) son usualmente usados con inversores o convertidores en sistemas de transmisión de Alta Tensión de Corriente Continua (HVDC).
José Guillermo Guarnizo Marin, Nelson Díaz Aldana, César Trujillo Rodríguez   +2 more
doaj   +3 more sources

Coupling Influence on the dq Impedance Stability Analysis for the Three-Phase Grid-Connected Inverter

Energies, 2019
The dq impedance stability analysis for a grid-connected current-control inverter is based on the impedance ratio matrix. However, the coupled matrix brings difficulties in deriving its eigenvalues for the analysis based on the general Nyquist criterion.
Chuanyue Li, Taoufik Qoria, Frederic Colas, Jun Liang, Wenlong Ming, Francois Gruson, Xavier Guillaud   +6 more
doaj   +1 more source

Mechanism analysis and mitigation strategies for oscillatory instability of synchronous generators affected by voltage source converters

IET Generation, Transmission & Distribution, 2022
The electric power systems are experiencing a transformation to be characterized by power electronic devices, for example, voltage source converters (VSCs).
Yicheng Xue, Guoteng Wang, Zheren Zhang, Zheng Xu   +3 more
doaj   +1 more source