Results 21 to 30 of about 46,909 (228)
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. +3 more
core +2 more sources
IEEE Access, 2023 The grid-side transient fault ride-through problem seriously affects the stable operation of the grid-connected wind turbine. At present, the grid-connected adaptability analysis of DC wind turbine (DCWT) under the grid-side transient faults is still a ...
Zhanlong Li +3 more
doaj +1 more source
DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter [PDF]
, 2013 HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is ...
Alan J. Watson +9 more
core +2 more sources
Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems
Energies, 2020 This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids.
Ramy Georgious +4 more
doaj +1 more source
DC fault protection of diode rectifier unit based HVDC system connecting offshore wind farms [PDF]
, 2018 DC fault ride-through operations of the offshore wind farm connecting with diode rectifier unit (DRU) based HVDC link are presented in this paper. A voltage-error-dependent fault current injection is proposed to regulate the WT current during DC faults ...
Adam, Grain Philip +3 more
core +1 more source
The Journal of Engineering, 2019 To integrate bulk wind power, using modular multilevel converter (MMC) based DC grids is an effective solution to improve the flexibility and reliability of the power grid.
Shuai Cao +4 more
doaj +1 more source
New Sub-Module with Reverse Blocking IGBT for DC Fault Ride-Through in MMC-HVDC System
Energies, 2021 When integrating multi-grid renewable energy systems, modular multi-level converters (MMCs) are promising for high-voltage DC (HVDC) transmission. Because of the characteristics of the system, however, it is more difficult to prevent a fault at the DC ...
Ui-Jin Kim, Seok-Gyu Oh
doaj +1 more source
A DC Short-Circuit Fault Ride Through Strategy of MMC-HVDC Based on the Cascaded Star Converter
Energies, 2018 A modular multilevel converter based high voltage direct current (MMC-HVDC) with DC fault self-clearing is adopted to deal with the DC short-circuit fault.
Yingjie Wang +4 more
doaj +1 more source
Mixed cells modular multilevel converter [PDF]
, 2014 This paper uses a scaled down version of the mixed cells modular multilevel converter (MMC) to discuss its modulation and capacitor voltage balancing method, and investigates its AC and DC fault ride-through capability.
Adam, G. P., Ahmed, K.H., Williams, B.W.
core +1 more source
Unidirectional HVdc Topology With DC Fault Ride-Through Capability
Canadian Journal of Electrical and Computer Engineering, 2017 HVdc transmission using modular multilevel converters (MMCs) is becoming increasingly prevalent. However, line-commutated converter (LCC) HVdc transmission remains advantageous in its ability to clear dc faults and restart power transmission without operation of the ac system protection. This paper presents an HVdc system topology that employs both MMC
Steven Howell +2 more
openaire +1 more source