Results 91 to 100 of about 1,814,391 (304)

A hybrid multilevel converter for medium and high voltage applications [PDF]

open access: yes, 2010
This paper investigates the suitability of the hybrid multilevel converter for medium and high voltage application. The converter operation, modulation, and capacitor voltage balancing method are described in detail.
Adam, Grain Philip   +4 more
core  

Experimental Test bed to De-Risk the Navy Advanced Development Model [PDF]

open access: yes, 2017
This paper presents a reduced scale demonstration test-bed at the University of Texas’ Center for Electromechanics (UT-CEM) which is well equipped to support the development and assessment of the anticipated Navy Advanced Development Model (ADM).
Feng, X   +6 more
core   +1 more source

Fast Harmonic compensation in hybrid HVDC offshore system

open access: yesJournal of Physics: Conference Series, 2022
Hybrid HVDC systems have been proposed as an alternative for nominal VSC-Based HVDC for offshore applications. Hybrid HVDC systems consist of an offshore power station composed of the connection of high-power diode rectifiers in series with a fractional power VSC-HVDC.
Tian, Shangen   +3 more
openaire   +2 more sources

A Hybrid Ultra‐High Voltage DC Transformer With Digital Twin‐Driven Operation and Control

open access: yesDigital Twins and Applications, Volume 3, Issue 1, January/December 2026.
This study introduces a digital twin‐driven hybrid ultra‐high‐voltage DC transformer (UHVDCT) that combines high‐capacity LCCs with low‐capacity MMCs at the UHV side. This innovative topology reduces MMC requirements by 32.9% while ensuring stable power flow and dynamic reactive balance through real‐time virtual‐physical synchronization.
Ling Xu   +6 more
wiley   +1 more source

Power balancing and dc fault ride through in DC grids with dc hubs and wind farms [PDF]

open access: yes, 2015
Acknowledgment This project was funded by European Research Council under the Ideas program in FP7; grant no 259328, 2010.Peer ...
Jovcic, Dragan, Lin, Weixing
core   +1 more source

Shielding of Unconventional High Surge Impedance Loading Transmission Lines

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper focuses on determining the optimal location and number of shield wires for a novel‐designed unconventional high surge impedance loading line. This line has a much lower surge impedance than conventional lines, raising key questions on the location of shield wires to meet an acceptable shielding failure rate (SFFOR).
Saikat Chowdhury, Mona Ghassemi
wiley   +1 more source

A Hybrid Reliability Evaluation Method for Meshed VSC-HVDC Grids

open access: yesEnergies, 2017
High-voltage direct current (HVDC) grids are emerging, and their reliability has been an increasing concern for the utilities. HVDC grids are different from typical two-terminal HVDC transmission systems due to the loops in their topology, which makes it
Haipeng Xie   +3 more
doaj   +1 more source

Optimal Control Design for Multiterminal HVDC [PDF]

open access: yes, 2013
This thesis proposes an optimal-control based design for distributed frequency control in multi-terminal high voltage direct current (MTDC) systems.
de Courreges d'Ustou, Benoit
core  

Hybrid HVDC circuit breaker with self‐powered gate drives [PDF]

open access: yesIET Power Electronics, 2016
The ever increasing electric power demand and the advent of renewable energy sources have revived the interest in high‐voltage direct current (HVDC) multi‐terminal networks. However, the absence of a suitable circuit breaker (CB) or fault tolerant voltage source converter station topologies with the required characteristics (such as operating speed ...
Effah, Francis Boafo   +6 more
openaire   +3 more sources

Ferromagnetically Shielded Fault Current Limiter (FS‐FCL) Evaluation in Power Line

open access: yesIET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study introduces a new ferromagnetically shielded FS‐FCL design and its control strategy for limiting and interrupting fault currents. The fully shielded core structure enhances inductance and prevents saturation, enabling an immediate fault response without causing voltage drop during normal conditions.
Kamran Ghorbanyan, Selim Acar
wiley   +1 more source

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