Results 91 to 100 of about 5,475 (232)
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
Harmonic‐Amplitude Modulation Strategy for PtP‐VSC‐HVDC Links Providing Frequency Support
Digital Twins and Applications, Volume 2, Issue 1, January/December 2025.ABSTRACT This paper presents a communication‐free frequency support strategy for point‐to‐point voltage source converter high‐voltage direct‐current (PtP‐VSC‐HVDC) links. The proposed strategy is conceived as a harmonic‐amplitude modulation (HAM), where the frequency deviation experienced by one power system is described as an instantaneous bi ...
Arcadio Perilla, Jose Luis Rueda Torres
wiley +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
Multi-pole voltage source converter HVDC transmission systems [PDF]
, 2016 This study connects several modular multilevel converters to form multi-pole voltage source converter highvoltage dc (VSC-HVDC) links which are suited for bulk power evacuation, with increased resiliency to ac and dc network faults.
Ased, Grain Philip, Williams, Barry W.
core +1 more source
Modular multilevel converter based LCL DC/DC converter for high power DC transmission grids [PDF]
, 2015 This paper presents a modular multilevel converter (MMC) based DC/DC converter with LCL inner circuit for HVDC transmission and DC grids. Three main design challenges are addressed.
Aboushady, Ahmed +2 more
core +1 more source
Modular Multilevel Converter Modelling, Control and Analysis under Grid Frequency Deviations [PDF]
, 2012 A tool for component sizing for MMCs has been developed and tested through simulations in PLECS. The steady-state behaviour under grid frequency deviations — interesting for offshore wind farm connections — has been analysed, providing insights in MMC ...
da Silva, Rodrigo +5 more
core +1 more source
Energy transfer analysis for capacitor voltage balancing of modular multilevel converters [PDF]
, 2016 Voltage balancing between sub-module (SM) capacitors is essential for reliable operation of the modular multilevel converter (MMC). To facilitate design and understanding of the balancing controllers, this study presents an energy transfer analysis for ...
Li, Binbin +3 more
core +1 more source
Pre-charging and DC fault ride-through of hybrid MMC based HVDC systems [PDF]
, 2015 Compared to half-bridge based MMCs, full-bridge based systems have the advantage of blocking dc fault, but at the expense of increased power semiconductors and power losses.
Morrow, D John +3 more
core +1 more source
High Voltage, 2018 A modular multilevel converter (MMC) is one of the promising voltage source converter topologies in the field of high-voltage direct current (HVDC) transmission.
Xiaofeng Yang +4 more
doaj +1 more source
Zhongguo dianliThe prominent risks of broadband oscillation among renewable energy, modular multilevel converter-based multi-terminal high voltage direct current (MMC-MTDC) and AC grid severely constrain the safe and stable operation and efficient accommodation of ...
Guoliang ZHOU +4 more
doaj +1 more source