Results 41 to 50 of about 77,102 (304)
Harmonic transfer characteristics of MMC‐HVDC systems
The Journal of Engineering, 2017 Modular multilevel converter (MMC) is considered as the most potential development of multilevel converter, the future of high‐voltage electric energy conversion, especially in the high‐voltage direct current (HVDC) transmission since the very beginning because of its unmatched advantages such as high modularity, compact structure, high quality of ...
Li Rong +4 more
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Transient overvoltage on overhead metal return lines of ±500 kV MMC-HVDC grid
The Journal of Engineering, 2018 The ±500 kV half-bridge modular multilevel converter-high-voltage DC (MMC-HVDC) grid project with overhead transmission line is under construction in China at present.
Huiwen He +4 more
doaj +1 more source
A novel MMC control scheme to increase the DC voltage in HVDC transmission systems [PDF]
, 2017 This research investigates third harmonic injection applied to a modular multilevel converter (MMC) to generate a higher DC voltage. This is achieved using a proposed novel control scheme that activates existing submodules (SMs) in the converter arms ...
Fletcher, John, Li, Rui
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Sukkur IBA Journal of Emerging Technologies, 2021 The research paper presents the control strategy to reduce THD (Total Harmonic Distortions) losses by the implementation of the Nearest Level Modulation control technique in a Modular Multilevel Converter. Modular Multilevel Converter is found one of the
engr Baqir Ali Shah +4 more
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Modelling of MMC-HVDC Systems – An Overview
Energy Procedia, 2015 AbstractModular Multilevel Converters (MMC) are presently the converter topology of choice for Voltage Source Converter High Voltage DC (VSC-HVDC) transmission schemes due to their very high efficiency. Accurate models of these complex MMC-HVDC systems are therefore required for research and development.
Beddard, A., Barnes, M.
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A Sliding-Mode Observer for MMC-HVDC Systems: Fault-Tolerant Scheme With Reduced Number of Sensors
IEEE Transactions on Power Delivery, 2023 The modular multilevel converter (MMC) has been widely adopted in different applications, such as high-voltage direct current (HVDC), electric drives and static synchronous compensators.
J. Farias +5 more
semanticscholar +1 more source
Robust and generic control of full-bridge modular multilevel converter high-voltage DC transmission systems [PDF]
, 2015 This paper presents the theoretical basis of the control strategy that allows the cell capacitor voltage regulation of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of its dc link voltage.
Adam, Grain Philip +1 more
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Circulating Current Reduction in MMC-HVDC System Using Average Model [PDF]
Applied Sciences, 2019 Modular multilevel converters (MMCs) are quickly emerging as a suitable technology for a voltage-source converter-based high-voltage direct-current (VSC-HVDC) transmission systems due to its numerous advantages as reported in literature. However, for a large DC-network, MMCs require large numbers of sub-modules (SMs) and switches, which makes its ...
Kamran Hafeez +3 more
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Interlink hybrid DC circuit breaker [PDF]
, 2018 —To protect HVDC grids from DC faults, the concept of a hybrid DC circuit breaker is widely accepted due to its low conduction losses and fast interruption speed.
Li, Chuanyue, Liang, Jun, Wang, Sheng
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Three-way Subsynchronous Torsional Interactions Between LCC HVDC, MMC HVDC and a Thermal Generator
Journal of Modern Power Systems and Clean Energy, 2023 This paper performs a study on three-way subsynchronous torsional interactions (SSTI) between a hybrid dual-in-feed high-voltage direct current (HVDC) system and a nuclear generator. The test case is based on the French IFA2000 line commutated converter (
Stefan Kovacevic +3 more
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