Results 91 to 100 of about 17,156 (263)
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 Renewable Power Generation, Volume 20, Issue 1, January/December 2026.The valve‐side single‐phase‐to‐ground (SPG) fault represents one of the most critical issues affecting the safe operation of hybrid cascade HVDC systems. This paper studies the mechanism of subsequent commutation failure caused by SPG faults on the MMC valve side in hybrid cascade HVDC systems and proposes a suppression measure.
Tao Zheng, Yuting Xue
wiley +1 more source
Operation and control of MMCs using cells with power transfer capability [PDF]
, 2015 Cells in conventional Modular Multilevel Converters (MMC) designs use a capacitor for energy storage. This means that the net power balance for each cell (neglecting losses) needs to be equal to zero, the MCC realizing therefore a power transfer between ...
Briz del Blanco, Fernando +4 more
core +2 more sources
IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.ABSTRACT This paper provides a comprehensive examination of the evolving protection challenges within DC microgrids powered by renewable resources and energy storage systems. It begins by delineating the methodological framework of conventional protection, critically assessing schemes based on current, voltage, and impedance to expose their limitations
Mohamed Elmadawy +7 more
wiley +1 more source
DC/DC converters based on hybrid MMC for HVDC grid interconnection [PDF]
, 2015 This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems.
Xu, Lie, Yao, Liangzhong, Zeng, Rong
core +1 more source
Modulation, control, and performance analysis of asymmetric modular multilevel converter (A‐MMC)
IET Power Electronics, 2018 Modular multilevel converters (MMC) have proven to be a viable candidate for high‐voltage direct current transmission systems. Here, asymmetric modular multilevel converters (A‐MMC) are introduced wherein each series connected module has two half‐bridge (HB) submodules, with asymmetric voltage rating.
Kundan Srivastav +3 more
openaire +1 more source
International Transactions on Electrical Energy Systems, Volume 2026, Issue 1, 2026.To address the challenge of weak fault transient characteristics in multiterminal flexible DC grids caused by transition resistance, DC reactors, and noise interference, which render traditional single‐electrical‐quantity detection methods ineffective, this paper proposes a fault identification scheme for flexible DC transmission systems based on the ...
Renwu Yan +5 more
wiley +1 more source
The Journal of Engineering, 2019 Modular multilevel converter-battery energy storage system (MMC-BESS) has a good engineering application. When MMC-BESS is connected to the grid, the real-time phase angle of grid is an important parameter.
Dan Zhang +3 more
doaj +1 more source
Dimensioning and Modulation Index Selection for the Hybrid Modular Multilevel Converter [PDF]
, 2017 The Hybrid MMC, comprising a mixture of fullbridge and half-bridge sub-modules, provides tolerance to DC faults without compromising the efficiency of the converter to a large extent. The inclusion of full-bridges creates a new freedom over the choice of
Chaffey, Geraint +4 more
core +1 more source
IEEE Access, 2019 The radiated electromagnetic disturbance was evaluated by measuring the electric field intensity in a bandwidth of 10 kHz-2.75 GHz near the valve hall, direct-current (DC) area, reactor room, and transformers in a ±320-kV modular multilevel ...
Jian Zhang +4 more
doaj +1 more source