Results 71 to 80 of about 23,865 (219)

Fault Diagnosis Method for DC Current Transformers Based on Deep Learning Hybrid Model

Vector: The Journal of Engineering, Volume 2027, Issue 1, January/December 2027.
Aiming at the problems of scarce fault samples, strong noise interference and complex feature coupling in the current DCCT fault diagnosis process, a DCCT fault diagnosis method based on a hybrid deep learning model is proposed. The performance of the proposed method is verified through experiments.
Cai Xu, Geng Chen, Site Li, Xinwei Zhang, Rigong Te   +4 more
wiley   +1 more source

Amphoteric Cu‐Doping Leading to High Thermoelectric Performance in p‐Type Bismuth Antimony Telluride

Advanced Functional Materials, Volume 36, Issue 88, 2 November 2026.
This study shows that Cu plays two opposite roles in p‐type Bi0.5Sb1.5Te3 depending on the processing route. Under thermodynamic‐equilibrium bulk‐synthesis, Cu mainly occupies cation sites, increases hole concentration, preserves mobility, and slightly reduces lattice heat transport. The best‐performing composition among the investigated series reaches
Moritz Thiem, Zhiyuan Li, Minsu Heo, Fangyi Hu, Tian Lan, Youngdeog Koh, Ruiwen Xie, Chuanmu Tian, Marc Widenmeyer, Hyun‐Sik Kim, Jan P. Hofmann, Yuan Yu, Hongbin Zhang, Anke Weidenkaff, G. Jeffrey Snyder, Wenjie Xie   +15 more
wiley   +1 more source

Solubility and Diffusivity of Polar and Non-Polar Molecules in Polyethylene-Aluminum Oxide Nanocomposites for HVDC Applications

Energies, 2020
The best commercial high-voltage insulation material of today is (crosslinked) ultra-pure low-density polyethylene (LDPE). A 100-fold decrease in electrical conductivity can be achieved by adding 1−3 wt.% of well-dispersed inorganic nanoparticles ...
Shima L. Holder, Mattias E. Karlsson, Richard T. Olsson, Mikael S. Hedenqvist, Fritjof Nilsson   +4 more
doaj   +1 more source

Turning Wind Into Value: Hydrogen Storage and Trade as Variation Management Strategies for Offshore Wind Integration

Wind Energy, Volume 29, Issue 11, November 2026.
ABSTRACT Offshore wind power, like other variable renewable electricity sources, requires variation management strategies (VMS) to address demand–supply imbalances in the electricity system. From a functional perspective, VMS that can absorb excess electricity are particularly well suited to wind power, which exhibits strong temporal variability.
Kumail Marnate, Stefan Grönkvist
wiley   +1 more source

HVDC tie links in smart power grids: A versatile control strategy of VSC converters

, 2021
The forced switching converters are the kernel of the modern paradigm of VSC-HVDC system. It is widely recognized that appropriate control laws make these converters more advantageous than the traditional line commutated ones.
Mottola F., Pisani C., Lauria D., Giannuzzi G. M., Del Pizzo F., Carlini E. M.   +5 more
core   +1 more source

Fault Current Limiter and Mechanical DC CB-Based Protection Against Valve-Side SPG Faults in HB-MMC Bipolar System

IEEE Access
Valve-side single-phase-to-ground (SPG) faults are atypical yet critical for the operation of half-bridge (HB) Modular Multilevel converter (MMC) bipolar or asymmetrical monopolar systems.
Muhammad Usman, Yu-Jin Kwak, Bang-Wook Lee   +2 more
doaj   +1 more source

System Constrained Active Power Loss Minimization in Practical Multi-terminal HVDC Systems through GA

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In this paper, a novel optimal reactive power flow solution approach inmulti-terminal HVDC (High Voltage Direct Current) systems is studied. ULTCs’(under load tap changer transformers) full equivalent model for the DCconverters’ are taken into account in
Faruk Yalçın, Uğur Arifoğlu
doaj   +1 more source

Variance‐Empirical Mode Decomposition Method for Fault Detection in MMC‐HVDC Transmission Lines

Energy Science &Engineering, Volume 14, Issue 10, Page 4626-4640, October 2026.
A variance‐embedded empirical mode decomposition (VEMD) method is proposed for fast and accurate fault detection in MMC‐HVDC transmission lines. By combining variance analysis with EMD, the method reliably detects various faults without communication links and remains robust to noise and non‐fault transients.
Seyed Amir Hosseini, Behrooz Taheri
wiley   +1 more source

The NEWGEN European Union Research Project for a New Generation of HVDC Cable Systems

, 2023
This paper illustrates the European Union NEWGEN research project, entitled 'New Generation of HVDC Insulation Materials, Cables and Systems', with 10 partners over 5 EU Countries. The objective of NEWGEN is to develop and proof new insulation materials,
Ciroth A., Wurm F., Vergine C., Caprara A., Kannampuzha M., Paajanen M., Harjuhahto J., Lahti K., Rytoluoto I., Mazzanti G., Leproux A.   +10 more
core   +1 more source

Research of optimized sorting algorithm of capacitor voltage for MMC

Gong-kuang zidonghua, 2014
The paper researched primary cause of increasing of switching frequency of modular multilevel converter led by traditional capacitor voltage sorting algorithm according to operation principle of the converter. It proposed an improved sorting algorithm of
SONG Pinggang, JIANG Lang, LI Yunfeng, DUAN Chengting   +3 more
doaj   +1 more source