Results 51 to 60 of about 792,011 (298)

A Protection Method for Inverter-based Microgrid Using Current-only Polarity Comparison

Journal of Modern Power Systems and Clean Energy, 2020
The design of an effective protection system for inverter-based microgrids is a complicated engineering challenge. This is due to the fact that inverters have limited fault current capabilities, and that the conventional overcurrent protection is not ...
Bin Wang, Liuming Jing
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Controllable reactor based hybrid HVDC breaker

High Voltage, 2020
Short circuit fault occurrence in high-voltage DC (HVDC) systems causes extremely high currents in a fast raising time that does not experience current zero-crossing.
Amir Heidary, Mehdi Bigdeli, Mehdi Bigdeli, Kumars Rouzbehi, Kumars Rouzbehi   +4 more
doaj   +1 more source

Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter [PDF]

, 2019
A novel fault-tolerant three-level power converter topology, named advanced three-level active T-Type (A3L-ATT) converter, is introduced to increase the reliability of multilevel power converters used in safety-critical applications.
He, Jiangbiao, Katebi, Ramin, Weise, Nathan   +2 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Adaptive DDL Algorithm to Elucidate the Protection Misoperation in Malaysian Rapid Rail DC Traction System

IEEE Access
In modern railway traffic systems, direct current (DC) electrification is a prevalent choice, with numerous traction networks adopting a variety of voltage levels to accommodate varying load current dynamics.
Vimal Rajan Bharatha Kumar, Mohammad Lutfi Othman, Noor Izzri Abdul Wahab, Hashim Bin Hizam, Mohammad Nasir Uddin, Nima Razaei, Andrew Xavier Raj Irudayaraj, Shiva Gopalakrishnan, Tasmeea Rahman   +8 more
doaj   +1 more source

A Novel Transient Fault Current Sensor Based on the PCB Rogowski Coil for Overhead Transmission Lines

Sensors, 2016
The accurate detection of high-frequency transient fault currents in overhead transmission lines is the basis of malfunction detection and diagnosis.
Yadong Liu, Xiaolei Xie, Yue Hu, Yong Qian, Gehao Sheng, Xiuchen Jiang   +5 more
doaj   +1 more source

Impact of Grid Topology on Pole-to-ground Fault Current in Bipolar DC Grids: Mechanism and Evaluation

Journal of Modern Power Systems and Clean Energy, 2023
The fault current level analysis is important for bipolar direct current (DC) grids, which determines the operation and protection requirements. The DC grid topology significantly impacts the current path and then the fault current level of the grid ...
Yingmin Zhang, Wenxin Zhang, Qiao Peng, Baohong Li, Yan Tao, Min Zhang, Tianqi Liu, Frede Blaabjerg   +7 more
doaj   +1 more source

Demonstration of sustained and useful converter responses during balanced and unbalanced faults in microgrids [PDF]

, 2012
In large power grids where converter penetration is presently low and the network impedance is predominantly reactive, the required response from converters during faults is presently specified by phrases such as “maximum reactive output”.
Burt, Graeme, Elders, Ian, Jackson, Gordon, McCarthy, J., Roscoe, Andrew   +4 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source