Results 61 to 70 of about 12,263,286 (349)

Fault detection and location in DC systems from initial di/dt measurement [PDF]

, 2012
The use of DC for primary power distribution has the potential to bring significant design, cost and efficiency benefits to a range of power transmission and distribution applications.
Burt, Graeme, Fletcher, Steven, Galloway, Stuart, Norman, Patrick   +3 more
core  

A Fault-Tolerant T-Type Multilevel Inverter Topology With Increased Overload Capability and Soft-Switching Characteristics [PDF]

, 2017
he performance of a novel three-phase four-leg fault-tolerant T-type inverter topology is introduced in this paper. This inverter topology provides a fault-tolerant solution to any open-circuit and certain short-circuit switching faults in the power ...
Demerdash, Nabeel, He, Jiangbiao, Katebi, Ramin, Wei, Lixiang, Weise, Nathan   +4 more
core   +2 more sources

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi, Daisuke Katagiri, Takeyuki Watadani, Shunichi Matsuda, Hiroshi Kaneko, Noritoshi Arai   +5 more
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

Characteristics of grounding performance at Taman Bukit Perdana [PDF]

, 2020
Grounding system is one of the important part during installation of power systems. The function of grounding system is to enable protection to the power system in case of any current leakage or lightning strike.
., Muhammad Saufi, Abdul Malik, Abdul Mukmin, Kamarudin, Qamarul Ezani, Mohd Jamail, Nor Akmal, Othman, Nordiana Azlin   +4 more
core  

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
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

Modular multilevel converter with modified half-bridge submodule and arm filter for dc transmission systems with DC fault blocking capability [PDF]

, 2018
Although a modular multilevel converter (MMC) is universally accepted as a suitable converter topology for the high voltage dc transmission systems, its dc fault ride performance requires substantial improvement in order to be used in critical ...
Abdelsalam, Ibrahim A., Aboushady, Ahmed A., Adam, Grain P., Ahmed, Khaled Hani   +3 more
core   +2 more sources