Results 11 to 20 of about 266,617 (137)

A High-Voltage Large-Capacity DC/DC Converter Integrated with the Function of DC Circuit Breaker

open access: yesZhongguo dianli, 2021
In recent years, high-voltage and large-capacity DC/DC converters have received more and more attention as the key equipment for voltage conversion in the DC grid.
Yue QUAN   +3 more
doaj   +1 more source

A new hybrid multilevel thyristor-based DC-DC converter

open access: yesAlexandria Engineering Journal, 2023
The rapid growth in HVDC grids is becoming inevitable for long-distance power transmission. Therefore, the idea of interconnection between the point-to-point links becomes essential.
Yousef N. Abdelaziz   +5 more
doaj   +1 more source

Research on Overvoltage Suppression by Blocking Diode and DC Circuit Breaker in LCC-VSC Hybrid HVDC System

open access: yesIEEE Access, 2021
In this study, a LCC-VSC hybrid HVDC transmission system was taken as an example. The valve and neutral overvoltage of the hybrid HVDC system were simulated and then calculated at the VSC converter station by installing a blocking diode and a DC circuit ...
Wang Dongju, Zhou Hao
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]

open access: yes, 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.   +3 more
core   +2 more sources

DC Fault Analysis and Clearance Solutions of MMC-HVDC Systems

open access: yesEnergies, 2018
In this paper, the DC short-circuit fault and corresponding clearance solutions of modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems are analyzed in detail.
Zheng Xu   +3 more
doaj   +1 more source

Efficient ion blocking in gaseous detectors and its application to gas-avalanche photomultipliers sensitive in the visible-light range [PDF]

open access: yes, 2008
A novel concept for ion blocking in gas-avalanche detectors was developed, comprising cascaded micro-hole electron multipliers with patterned electrodes for ion defocusing.
A. Breskin   +18 more
core   +2 more sources

Protection scheme for LVDC distribution network based on stepwise blocking of power electronic transformer

open access: yesIET Renewable Power Generation, 2023
Cascaded H‐bridge power electronic transformers (CHB‐PET) can efficiently connect AC/DC distribution networks, realizing power transmission and electric energy conversion.
Yongfan Guo   +3 more
doaj   +1 more source

Optimal VDC service provisioning in optically interconnected disaggregated data centers [PDF]

open access: yes, 2016
©2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Agraz Bujan, Fernando   +3 more
core   +2 more sources

Superconductivity in a new layered bismuth oxyselenide: LaO0.5F0.5BiSe2 [PDF]

open access: yes, 2013
We report superconductivity in a new layered bismuth oxyselenide LaO0.5F0.5BiSe2 with the ZrCuSiAs-type structure composed of alternating superconducting BiSe2 and blocking LaO layers.
Amato, A.   +9 more
core   +1 more source

Human Milk Blocks DC-SIGN–Pathogen Interaction via MUC1 [PDF]

open access: yesFrontiers in Immunology, 2015
Beneficial effects of breastfeeding are well-recognized and include both immediate neonatal protection against pathogens and long-term protection against allergies and autoimmune diseases. Although several proteins have been identified to have anti-viral or anti-bacterial effects like secretory IgA or lactoferrin, the mechanisms of immune modulation ...
Nathalie eKoning   +8 more
openaire   +7 more sources

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