Results 91 to 100 of about 4,243 (258)
Equivalent Test Method for Fault Ride‐Through of Integrated Energy‐consuming MMC Modules
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This paper proposes an equivalent assessment index covering the entire fault ride‐through process, taking the integrated energy‐consuming MMC valve as the research object, and solves the problem of the lack of assessment index for the fault ride‐through equivalent test.
Ying Li +7 more
wiley +1 more source
Influence of third harmonic injection on MMC-based HVDC transmission systems [PDF]
, 2016 Whilst third harmonic injection is extensively used in modular multilevel converter (MMC) control, its significant advantages over sinusoidal modulation have not been fully explored.
Fletcher, John E. +2 more
core +1 more source
IET Power Electronics, Volume 19, Issue 1, January/December 2026.This paper proposes a non‐contact method for measuring the turn‐off time of insulated‐gate bipolar transistor (IGBT) devices in modular multilevel converters (MMC) submodules, using the decay of load‐side common‐mode current. The technique leverages existing current‐sensing infrastructure and avoids intrusive modifications, enabling real‐time ...
Jiyun Liu +7 more
wiley +1 more source
Applied SciencesModular multilevel converter–high-voltage direct current (MMC-HVDC) systems are a key technology for integrating large-scale offshore wind farms due to their flexibility, controllability, and decoupled active and reactive power characteristics.
Lin Xu +5 more
doaj +1 more source
Design Procedure of MMC-HVDC System: Comprehensive Consideration of Internal and External Dynamics
IEEE Access, 2020 This paper proposes a systematic design procedure with comprehensive consideration of the internal and external dynamics in modular multilevel converter high voltage direct current (MMC-HVDC) transmission system.
Jaesik Kang +4 more
doaj +1 more source
IET Power Electronics, Volume 19, Issue 1, January/December 2026.The arm‐multiplexing modular multilevel converter (AM‐MMC) is a lightweight, high‐power‐density topology whose conventional modulation strategies require large circulating currents to maintain energy balance. This paper establishes a time‐domain analytical model of the AM‐MMC energy‐balance mechanism and proposes an optimised independent arm modulation
Zhen Zhang +5 more
wiley +1 more source
Sequence current controllability analysis of an offshore MMC-HVDC during asymmetrical faults [PDF]
, 2019 This paper analyzes the sequence current controllability of an offshore MMC-HVDC during asymmetrical faults. It is found that the separate limitation of the output positive- and negative-sequence current of the MMC-HVDC during asymmetrical faults may ...
Hjerrild, Jesper +4 more
core +3 more sources
A DC fault current fast-computing method of MMC-HVDC grid with short circuit protection equipment
Frontiers in Energy ResearchThe multi-terminal modular multi-level converter-based high voltage direct current (MMC-HVDC) grid with short circuit protection equipment (SCPE) is so complex that it is difficult to estimate its fault current and analyze the performance of SCPE by ...
Xiong Zhang, Xu Yang, Chaoran Zhuo
doaj +1 more source
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.The proposed protection scheme is robust against fault resistance variations and can meet the stringent speed requirements for direct current line protection, offering a reliable solution for systems with high levels of renewable energy integration. ABSTRACT In multi‐terminal flexible direct current (DC) systems, faults on the DC line develop rapidly ...
Jing Ma +3 more
wiley +1 more source
Comparison of bipolar sub-modules for the alternate arm converter [PDF]
, 2016 © 2016 IEEE.Research on dc-fault tolerant multilevel converters has gained noticeable attention over recent years. The alternate arm converter (AAC) is one of such emerging multilevel converter topologies, and a hybrid topology of the two-level converter
Agelidis, Vassilios +5 more
core +1 more source