Results 11 to 20 of about 7,403 (298)

Direct Arm Energy Control of the Modular Multilevel Matrix Converter

open access: yesIEEE Access, 2023
Modular multilevel matrix converter is a type of converter used in medium-voltage ac-ac power conversion. Controlling the energy content of the converter arms is a prerequisite for a proper converter operation, and at the same time a challenging control ...
Milan Utvic   +2 more
doaj   +1 more source

A Novel Z-Type Self-Balancing Modular Multilevel Converter for Flywheel Driving Applications [PDF]

open access: yesE3S Web of Conferences, 2021
With the development of flywheel technology, the speed and the voltage level of flywheel continue to increase. The Z-type self-balancing modular multilevel converter can have a wide frequency range at medium voltage and is suitable for flywheel driving ...
Cheng Shuoqi   +4 more
doaj   +1 more source

Modular Multilevel Converters [PDF]

open access: yesIEEE Transactions on Industrial Electronics, 2019
The papers in this special section focus on the latest achievements on MMCs regarding the development of new circuit topologies, modeling, operation, and fault analysis. Modular multilevel converters (MMCs) have emerged as an attractive solution for high-voltage high-power applications, such as high-voltage direct current (HVdc) transmission systems ...
Josep Pou   +2 more
openaire   +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

Novel Enhanced Modular Multilevel Converter for High-Voltage Direct Current Transmission Systems

open access: yesEnergies, 2020
This paper proposes an enhanced modular multilevel converter as an alternative to the conventional half-bridge modular multilevel converter that employs a reduced number of medium-voltage cells, with the aim of improving waveforms quality in its AC and ...
Dimitrios Vozikis   +3 more
doaj   +1 more source

RBF Neural Network-Based Sliding Mode Control for Modular Multilevel Converter with Uncertainty Mathematical Model

open access: yesEnergies, 2022
For medium and high-powered applications, modular multilevel converters have become the most promising converter application. In this paper, a sliding mode controller based on an RBF neural network is proposed for a modular multilevel converter.
Xuhong Yang, Haoxu Fang
doaj   +1 more source

Mixed cells modular multilevel converter [PDF]

open access: yes2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014
This paper uses a scaled down version of the mixed cells modular multilevel converter (MMC) to discuss its modulation and capacitor voltage balancing method, and investigates its AC and DC fault ride-through capability. It has been found that the mixed MMC is resilient to both AC and DC network faults, which are necessary for next generations of highly
Adam, G. P., Ahmed, K.H., Williams, B.W.
openaire   +3 more sources

Research on Topology and Economy of High-Frequency Isolated AC/AC Converter in Fractional Frequency Transmission System

open access: yesZhejiang dianli, 2022
As a new transmission mode, fractional frequency transmission has increasingly prominent advantages in the field of renewable energy, especially in offshore wind power.
DUAN Ziyue   +5 more
doaj   +1 more source

Modeling and Experimental Evaluation of Z-Source Modular Multilevel Converter Using Reduced Inserted Cells Technique

open access: yesIEEE Access, 2021
The integration of a Z-source network with a modular multilevel converter (MMC) to provide voltage step-up function is proposed in this paper. The proposed Z-source modular multilevel converter (ZS-MMC) uses a Z-source network connected between the DC ...
Fatma A. Khera   +2 more
doaj   +1 more source

An Overview of Modelling Techniques and Control Strategies for Modular Multilevel Matrix Converters

open access: yesEnergies, 2020
The Modular Multilevel Matrix Converter is a relatively new power converter topology appropriate for high-power Alternating Current (AC) to AC purposes. Several publications in the literature have highlighted the converter capabilities such as modularity,
Matias Diaz   +7 more
doaj   +1 more source

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