Results 31 to 40 of about 46,909 (228)

Enhanced independent pole control of hybrid MMC-HVDC system [PDF]

, 2018
This paper presents an enhanced independent pole control scheme for hybrid modular multilevel converter (MMC) based on full bridge sub-module (FBSM) and half bridge sub-module (HBSM). A detailed analysis of power distribution between upper and lower arms
Ling, Weixing, Wen, Jingyu, Xiang, Wang, Xu, Lie   +3 more
core   +1 more source

Advanced Fault Ride-Through Strategy by an MMC HVDC Transmission for Off-Shore Wind Farm Interconnection

Applied Sciences, 2019
In order to solve the problems brought upon by off-shore wind-power plants, it is important to improve fault ride-through capability when an on-shore fault occurs in order to prevent DC overvoltage.
Junghun Lee, Yeuntae Yoo, Minhan Yoon, Gilsoo Jang   +3 more
doaj   +1 more source

Fluctuation Suppression of DC-Link Voltage Using Control of Converters Connected with DC Distributed Generation

Energies, 2020
Due to the increase in DC load and DC Power generation, the need for DC power system is emerging. Accordingly, FRT (fault ride through) and LVRT (low voltage ride through), which are related regulations for renewable energy sources, have been enacted ...
Sang-Jae Choi, Sung-Hun Lim
doaj   +1 more source

A hybrid modular multilevel converter with novel three-level cells for DC fault blocking capability [PDF]

, 2015
A novel hybrid, modular multilevel converter is presented that utilizes a combination of half-bridge and novel three-level cells where the three-level cells utilize a clamp circuit which, under dc side faults, is capable of blocking fault current thereby
Fletcher, John E., Holliday, Derrick, Li, Rui, Williams, Barry W., Xu, Lie   +4 more
core   +1 more source

A Critical Review of Modular Multilevel Converter Configurations and Submodule Topologies from DC Fault Blocking and Ride-Through Capabilities Viewpoints for HVDC Applications

Energies, 2022
Modular multilevel converters (MMCs) based on half-bridge submodules (HBSMs) are unable to prevent the AC side contribution to DC side fault currents, thus necessitating circuit breakers (CBs) for protection.
Munif Nazmus Sakib, Sahar Pirooz Azad, Mehrdad Kazerani   +2 more
doaj   +1 more source

Low-Voltage Ride Through Strategy for MMC With Y₀/Y₀ Arrangement Transformer Under Single-Line-to-Ground Fault

IEEE Access, 2021
In the offshore wind farm high-voltage direct-current (HVDC) system, the power delivery capability of the onshore modular multilevel converter (MMC) decreases severely under grid fault, which makes the DC-bus voltage increase rapidly and threatens the ...
Xiaohe Wang, Xu Cai, Qing Chen, Bin Lin, Rui Xie   +4 more
doaj   +1 more source

An MMC based HVDC system with optimized AC fault ride-through capability and enhanced circulating current suppression control

Frontiers in Energy Research, 2023
Modular multilevel converter (MMC) is a proven technology for HVDC applications due to its salient features such as modularity and excellent power quality.
Jahangeer Badar, Faheem Akhtar, Dileep Kumar, Hafiz Mudassir Munir, Khawaja Haider Ali, Faisal Alsaif, Sager Alsulamy   +6 more
doaj   +1 more source

The Extended Overlap Alternate Arm Converter:A Voltage Source Converter with DC Fault Ride-Through Capability and a Compact Design [PDF]

, 2017
The Alternate Arm Converter (AAC) was one of the first modular converter topologies to feature DC-side fault ride-through capability with only a small penalty in power efficiency.
Chaffey, Geraint, Clemow, Phil, Dyke, Kevin J., Green, Tim C., Judge, Paul Daniel, Merlin, Michaël Marc Claude, Soto Sanchez, Diego, Trainer, David R.   +7 more
core   +1 more source

Development and performance analysis of intelligent fault ride through control scheme in the dynamic behaviour of grid connected DFIG based wind systems

Energy Reports, 2020
As the penetration of wind power increases, the fault ride through requirements imposed by grid code is important in grid connected wind systems. The wind systems should remain connected to the grid during grid faults satisfying the grid code which ...
C.R. Raghavendran, J. Preetha Roselyn, D. Devaraj   +2 more
doaj   +1 more source

A Hybrid HVDC Topology Suitable for Large-Scale Pure Clean Energy Power Base Transmission

Zhongguo dianli, 2023
In order to meet the transmission needs of large-scale pure new energy power bases, after topology comparison, this paper used a hybrid cascaded topology consisting of a line commutated converter (LCC) and a modular multilevel converter (MMC) in the ...
Wenzhe XU, Zheren ZHANG, Zheng XU
doaj   +1 more source