Results 101 to 110 of about 4,140,882 (287)

Analytical solution of conductor tensile force in asymmetrical spans used in overhead power lines and substations with influence of tension insulators

Electrical engineering & Electromechanics
Introduction. Designing electrical substations involves analyzing the horizontal tensile force in flexible tension conductors under varying temperatures. These temperature changes affect the conductor’s length and forces. Problem.
J. Bendik, M. Cenky, J. Paulech, V. Goga
doaj   +1 more source

Modelamento de um minidisjuntor sob curto-circuito [PDF]

, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.Este trabalho apresenta um modelo computacional de um minidisjuntor de maneira a simular o comportamento deste ...
Günther, Ivo Detlev
core  

Sustainable and Multifunctional Natural Macromolecular Polymers for Aqueous Zn Metal Batteries

Advanced Materials, EarlyView.
We comprehensively review the structure‐function relationships and regulatory mechanism of natural macromolecular polymers in stabilizing zinc anodes at the microscopic and mesoscopic scales. The interactions among polymer structures, optimization strategies, and regulatory mechanisms are discussed systematically summarizing recent related research ...
Yunuo Shi, Bo Jiang, Jingcheng Zhang, Xiaodong Shao, Peixun Xiong, Lutong Shan, Shengyang Huang, Mengfang Liang, Mengyao Chang, Fangyan Liu, Wenwu Li, Baoyu Xia, Wei Ji, Ho Seok Park   +13 more
wiley   +1 more source

Grid-Connected Harmonic Suppression Strategy Considering Phase-Locked Loop Phase-Locking Error Under Asymmetrical Faults

Energies
Harmonic distortion caused by phase jumps in the phase-locked loop (PLL) during asymmetric faults poses a significant threat to the secure operation of renewable energy grid-connected systems.
Yanjiu Zhang, Shuxin Tian
doaj   +1 more source

Short-circuit calculation of power systems with power electronics converters considering asymmetrical faults and converter limits

International Journal of Electrical Power & Energy Systems
This paper deals with the challenge of short-circuit calculation for power systems dominated by power electronics converters considering both symmetrical and asymmetrical fault events. A novel methodology has been presented to identify the short-circuit equilibrium point considering the grid support control and limitations of power converters.
Song, Jie, Cheah Mañé, Marc, Prieto Araujo, Eduardo, Gomis Bellmunt, Oriol   +3 more
openaire   +2 more sources

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

Advanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

Dynamic mater-slave control strategy for transient coordination of inverter based microgrids under asymmetric faults

International Journal of Electrical Power & Energy Systems
The ever-expanding inverter-based microgrids (MGs) require the grid-forming distributed renewable energy resources (DERs) to enhance the system safety.
Xia Shen, Chao Shen, W. Huang, Yijun Xu
doaj   +1 more source

MODELING OF THREE-PHASE THREE LEG TRANSFORMER DEVICES FOR ENGINEERING CALCULATIONS OF ASYMMETRICAL MODES FOR DIFFERENT SCHEMES OF WINDING CONNECTIONS [PDF]

Problems of the Regional Energetics, 2013
The model is proposed for the calculation and research of steady state asymmetric modes and transients in three-phase three legs transformer devices with arbitrary diagram of windings connection, taking into account the electromagnetic coupling of the ...
Bosneaga V.A, Suslov V.M.
doaj  

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

Advanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na, Geonyoung Jung, Yoojin Chang, Yun Goo Ro, Cheolhong Park, Jeonghee Yeom, Jinyoung Kim, Jeeyoon Kim, Hyejin Lee, Hyeji Oh, Hyunhyub Ko   +10 more
wiley   +1 more source

Diagnosis of early turn-to-turn short-circuit faults of traction motor stators based on step excitation response

机车电传动
In order to realize reliable diagnosis of early faults of stator winding turn-to-turn short circuits of traction motors, a fault diagnosis method based on steady-state response current of step excitation was proposed in this study.
GENG Min, QIN Jiayi, LIU Mingjie, ZHANG Chuanbao, WANG Xilian   +4 more
doaj