Results 31 to 40 of about 14,714 (276)

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

open access: yes, 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.   +4 more
core   +1 more source

Pre-charging control strategy of modular multilevel inverter

open access: yesGong-kuang zidonghua, 2019
According to operation characteristics of mine hoist, a back-to-back modular multilevel converter composed of modular multilevel rectifier and modular multilevel inverter was used for control of mine hoist.
ZHU Qixian   +3 more
doaj   +1 more source

Grid Integration of Offshore Wind Farms Using Modular Marx Multilevel Converters [PDF]

open access: yes, 2012
This paper proposes the use of a Modular Marx Multilevel Converter, as a solution for energy integration between an offshore Wind Farm and the power grid network.
Encarnação, Luís   +3 more
core   +2 more sources

Analysis of Asymmetric Hybrid Modular Multilevel Topology for Medium-Voltage Front-End Converter Applications

open access: yesEnergies, 2023
Modular multilevel converters (MMCs) have been conceived as an alternative in front-end converter applications to enhance the converter system’s reliability, minimize total harmonic distortion, and improve power quality.
Muhammad Ali   +4 more
doaj   +1 more source

Research of influence of dead time by carrier phase shifted modulation on modular multilevel converter

open access: yesGong-kuang zidonghua, 2013
The paper analyzed influence of dead time on single sub-module of modular multilevel converter and reached conclusions that the sub-module will produce positive dead voltage from inserted state to cut-off state when arm current is positive and negative ...
SONG Ping-gang, LI Yun-feng, WANG Li-na
doaj   +1 more source

Design and implementation of 30kW 200/900V LCL modular multilevel based DC/DC converter for high power applications [PDF]

open access: yes, 2016
This paper presents the design, development and testing of a 30kW, 200V/900V modular multilevel converter (MMC) based DC/DC converter prototype. An internal LCL circuit is used to provide voltage stepping and fault tolerance property.
Aboushady, A.   +3 more
core   +2 more sources

Modular multilevel converter losses model for HVdc applications [PDF]

open access: yes, 2017
Multi-terminal high voltage dc (HVdc) grids can eventually became a feasible solution to transport energy to remote and/ or distant areas and its exploitation depend, among other things, on the performance of the converter terminals.
Antonio Ferreira, Abel   +1 more
core   +2 more sources

Quasi two-level PWM operation of a nine-arm modular multilevel converter for six-phase medium-voltage motor drives [PDF]

open access: yes, 2017
This paper proposes a hybrid converter for medium-voltage six-phase machine drive systems that mixes the operation of a traditional two-level voltage-source inverter and the modular multilevel converter (MMC) to enable operation over a wide frequency ...
Adam, Grain P.   +4 more
core   +1 more source

Control of an Offshore Wind Farm Considering Grid-Connected and Stand-Alone Operation of a High-Voltage Direct Current Transmission System Based on Multilevel Modular Converters

open access: yesEnergies, 2023
This work presents a control strategy for integrating an offshore wind farm into the onshore electrical grid using a high-voltage dc transmission system based on modular multilevel converters.
Matheus Sene Paulo   +3 more
doaj   +1 more source

Distributed Control for a Modular Multilevel Converter [PDF]

open access: yesIEEE Transactions on Power Electronics, 2018
Conventional centralized control strategies may reduce the flexibility and expandability of a modular multilevel converter (MMC) system. To tackle this issue, this paper proposes a distributed control architecture that is capable of assigning certain control tasks to distributed local controllers and improves the modularity of an MMC system.
Shunfeng Yang, Yi Tang, Peng Wang
openaire   +3 more sources

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