Results 41 to 50 of about 665 (250)

Research on influencing factors to key parameters of hybrid DC circuit breaker and prototype development

机车电传动, 2022
A hybrid DC circuit breaker is the core protection equipment of a DC system, and its key parameters are critical to the products design and application, so the research on the influencing factors to such key parameters is of great significance to the ...
LUO Wenguang, YI Kang, ZOU Yangju, LIU Shaoqi, WANG Kangyu   +4 more
doaj  

Modeling and Prediction Analysis of Magnetic Field in DC Yard of VSC-HVDC Station under Short Circuit Condition

Zhongguo dianli, 2021
For the voltage source converter based high voltage direct current (VSC-HVDC) station equipped with hybrid DC breakers, the DC circuit breaker has fast speed for breaking fault current and short time for internal commutation.
Meng BAO, Hong SHEN, Jialiang LI, Yan SHI, Lei QI, Qian WANG   +5 more
doaj   +1 more source

Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker [PDF]

, 2018
Direct current (DC) circuit breakers are a key ena-bling technology for fault management in multi-terminal high voltage direct current (HVDC) systems. DC fault isolation is chal-lenging due to the high rate of rise of the fault current and the lack of ...
Oliver Cwikowski, Smith, Alexander C., Cwikowski, O., Barnes, Mike, Pei, X., Alexander C. Smith, Smith, A.C.; id_orcid, Cwikowski, Oliver, Xiaoze Pei, Pei, Xiaoze, Barnes, M., Mike Barnes   +11 more
core   +1 more source

Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability

, 2011
A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme, S.D.A. Fletcher, Norman, Patrick, Galloway, Stuart, Fletcher, Steven, P.J. Norman, G.M. Burt, S.J. Galloway   +7 more
core   +1 more source

Multi-port Hybrid HVDC Circuit Breaker

, 2017
This paper proposes a new n-port hybrid dc circuit breaker for offshore multi-terminal HVDC grid application. The n-port dc circuit breaker can substitute n-1 hybrid dc circuit breakers at a dc bus with n-1 adjacent dc transmission lines.
Nuno Silva, Silva, Nuno, Dirk Van Hertem, Ataollah Mokhberdoran, Adriano Carvalho, Mokhberdoran, Ataollah, Van Hertem, Dirk, Carvalho, Adriano, Leite, Helder, Helder Leite   +9 more
core   +1 more source

Fast Charge–Discharge of LiNi0.9Co0.05Mn0.05 Enabled by a Bikitaite‐Infused Separator for Li Metal Batteries

Advanced Functional Materials, EarlyView.
A bikitaite‐infused cellulose separator is introduced for Li metal batteries, leveraging bikitaite zeolite's ion‐conductive properties to regulate Li+‐ion flux and suppress dendrite growth. The membrane design ensures uniform Li plating, enhanced electrolyte wettability, and robust thermal/mechanical stability, delivering stable performance and low ...
Isheunesu Phiri, Kennedy Ssendagire, Sun‐Yul Ryou   +2 more
wiley   +1 more source

The DC circuit-breaker for low-voltage grids : design, implementation and analysis of DC circuit-breaker with countercurrent injection principle

, 2021
Faults in DC systems are difficult to interrupt compared to their AC counterparts due to absence of natural current-zero (CZ) crossing in DC current. This puts forward the need of enhanced arc chambers inside the circuit-breaker to cope with DC arc.
Virdag, Muhammad-Ali-Khan
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Design of LVDC Bidirectional Hybrid Circuit Breaker

, 2021
One of the most challenging hindrances to the spread use of the DC grids is their protection devices. Due to the absence of zero crossing, when a fault occurs, arc extinction becomes an issue for the traditional mechanical circuit breakers. Thanks to the
Hossein Haghnazari, Riccardo Lazzari, Luigi Piegari, Haghnazari H., Lazzari R., Piegari L.   +5 more
core   +1 more source

A low-cost current flow controlling interline hybrid circuit breaker combined with SCR and H-bridge sub-module

Frontiers in Energy Research, 2023
A massive number of DC circuit breaker is usually necessary to be installed to protect HVDC grids from DC faults, this will lead to high capital costs because large number of expensive IGBT-in-series are used.
Qingpeng Zeng, Qingpeng Zeng, Jin Zhu, Xinming Guo, Xinming Guo, Qunhai Huo, Qunhai Huo, Jingyuan Yin, Tongzhen Wei, Tongzhen Wei   +9 more
doaj   +1 more source