Results 21 to 30 of about 1,469 (243)

Cyber-Attacks in Modular Multilevel Converters

open access: yesIEEE Transactions on Power Electronics, 2022
Distributed control of modular multilevel converter (MMC) submodules offers several potential benefits such as flexibility and modularity. In this approach, low-level control tasks, such as capacitor voltage balancing, can be distributed amongst controllers placed in the SMs.
Claudio Burgos-Mellado   +6 more
openaire   +2 more sources

Derivation and Comparison of Modular Multilevel Converter Topologies with DC Fault Ride-through Capability

open access: yesZhongguo dianli, 2021
The DC fault has become one of the most serious obstacles for the development of DC system because of its wide impact range and large fault current.
Shiyuan FAN   +5 more
doaj   +1 more source

Optimal Design and Control of MMC STATCOM for Improving Power Quality Indicators

open access: yesApplied Sciences, 2020
In recent years, modular multilevel converters (MMC) are becoming popular in the distribution and transmission of electrical systems. The multilevel converter suffers from circulating current within the converter that increases the conduction loss of ...
Ahmed A. Zaki Diab   +4 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

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

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

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

Passive Voltage Balancing In Modular Multilevel Converter During Precharge: Analysis And Design

open access: yesEletrônica de Potência, 2020
The modular multilevel converter is composed of many equal submodules connected in series, each having to ideally withstand the same voltage and current stresses. The resulting configuration when each SM capacitor feeds its own auxiliary power supply is
Gean Jacques Maia de Sousa   +3 more
doaj   +1 more source

Reducing Submodule Capacitance for Modular Multilevel Converter-Based Medium-Voltage Wind Power Converter

open access: yesFrontiers in Energy Research, 2022
This study presents a strategy to reduce the capacitance of the submodule (SM) capacitor of a modular multilevel converter-based medium-voltage wind power converter. The design of the SM capacitor of the modular multilevel converter (MMC) should consider
Jianhang Qian   +4 more
doaj   +1 more source

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