Results 31 to 40 of about 368,690 (301)

Improved Two-Level Voltage Source Converter for High-Voltage Direct Current Transmission Systems [PDF]

open access: yesIEEE Journal of Emerging and Selected Topics in Power Electronics, 2017
this paper presents an improved two-level voltage source converter for dc transmission systems with relatively low rated power and dc operating voltage. Unlike conventional two-level converter, the presented converter employs two distributed cell capacitors per three-phase; thus, do not contribute any current when converter is blocked during dc short ...
Grain Philip Adam   +6 more
openaire   +3 more sources

Power frequency interference and suppression in measurement of power transmission tower grounding resistance [PDF]

open access: yes, 2014
“If you want peace, work for justice.” – Pope Paul VI This paper explores how the children’s right to be heard is implemented in the criminal proceedings in Romania and Norway.
Wenjun, Zhou   +7 more
core   +3 more sources

High voltage direct current transmission cables to help decarbonisation in Europe: Recent achievements and issues

open access: yesHigh Voltage, 2022
High Voltage Direct Current (HVDC) underground and submarine cables constitute an essential technology for the long‐distance transmission of renewable electrical power with low losses, thereby fostering decarbonisation.
Giovanni Mazzanti
doaj   +1 more source

The Unified Supplementary Damping Method Based on Voltage-Soured Converter High-Voltage Direct Current Transmission Through Robust Control

open access: yesFrontiers in Energy Research, 2022
The VSC-HVDC system can damp the inter-area low-frequency oscillation effectively. To enhance the ability of the VSC-HVDC supplementary control, this article proposes a unified low-frequency oscillation controller design using the robustness theory.
Zhu Jinlei   +4 more
doaj   +1 more source

Simulation of a rectifier malfunction on a offshore wind system with HVDC transmission [PDF]

open access: yes, 2015
A new integrated mathematical model for the simulation of an offshore wind system having a rectifier input voltage malfunction at one phase is presented in this paper.
Couto, Carlos   +4 more
core   +1 more source

Review of dc-dc converters for multi-terminal HVDC transmission networks [PDF]

open access: yes, 2016
This study presents a comprehensive review of high-power dc-dc converters for high-voltage direct current (HVDC) transmission systems, with emphasis on the most promising topologies from established and emerging dc-dc converters.
Ased, Grain Philip   +4 more
core   +1 more source

Impact of HVDC transmission capacity on multi-send HVDC system voltage stability

open access: yesEnergy Reports, 2022
The massive construction of high voltage direct current (HVDC) makes the AC/DC interactions very complicated, which seriously affects transient voltage stability.
Mingjie Wang, Gang Zhang, Zhe Zhang
doaj   +1 more source

High-Voltage High-Capacity Active Filter Technology for High Voltage DC Converter Station [PDF]

open access: yesDianli jianshe
[Objective] High-voltage direct current transmission technology is a core technical method for optimizing resource allocation in China. Traditional high-voltage direct-current transmission technology has many drawbacks, such as a large footprint and ...
WANG Ling, MA Weimin, JI Yiming, LI Ming, WU Fangjie, XU Ying, DU Xiaolei, ZHANG Xiujuan
doaj   +1 more source

Assessment of fault location techniques in voltage source converter based HVDC systems [PDF]

open access: yes, 2017
This paper investigates fault location techniques in high voltage direct current (HVDC) transmission networks utilizing voltage source converters (VSCs).
Dyśko, Adam   +3 more
core   +1 more source

AC voltage control of DC/DC converters based on modular multilevel converters in multi-terminal high-voltage direct current transmission systems [PDF]

open access: yes, 2016
The AC voltage control of a DC/DC converter based on the modular multilevel converter (MMC) is considered under normal operation and during a local DC fault.
Fletcher, John E., Li, Rui
core   +2 more sources

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