Results 51 to 60 of about 4,803 (241)

Undisturbed grid connection control strategy for two-terminal flexible low-frequency transmission system

open access: yes电力工程技术, 2022
Low-frequency transmission system (LFTS) based on modular multilevel matrix converter (M3C) has great application potential in offshore wind power transmission,urban power grid and long-distance power transmission.
LU Liwen   +5 more
doaj   +1 more source

Harmonic Analysis of Modular Multilevel Matrix Converter for Fractional Frequency Transmission System [PDF]

open access: yesIEEE Transactions on Power Delivery, 2020
Fractional Frequency Transmission is a competitive technology for offshore wind power transmission. Modular Multilevel Matrix Converter (M3C) plays a key role in a Fractional Frequency Transmission System (FFTS) as the frequency changer. M3C is broadly considered as the AC–AC converter for the future with its attractive advantages in high voltage and ...
Jiajie Luo   +4 more
openaire   +1 more source

High-performance motor drives [PDF]

open access: yes, 2011
This article reviews the present state and trends in the development of key parts of controlled induction motor drive systems: converter topologies, modulation methods, as well as control and estimation techniques.
García Franquelo, Leopoldo   +4 more
core   +1 more source

Modeling and Harmonic Stability of MMC-HVDC With Passive Circulating Current Filters

open access: yesIEEE Access, 2020
A modular multilevel converter (MMC) is an emerging converter technology widely used in wind power applications using high-voltage direct current (HVDC) transmission, and it has been largely investigated in medium-voltage solar harvesting as well as ...
Bo Zhang, Hamed Nademi
doaj   +1 more source

Comprehensive optimization framework for transmission expansion planning with fractional frequency transmission system

open access: yesIET Generation, Transmission & Distribution, 2023
The Fractional Frequency Transmission System (FFTS) operates with low frequency to decrease the electrical length of AC transmission lines, consequently enhancing transmission capacity.
Zhongqi Cai   +6 more
doaj   +1 more source

Three-phase AC-AC hexagonal chopper system with heterodyne modulation for power flow control enhancement [PDF]

open access: yes, 2015
This paper proposes a three-phase AC chopper system for the interconnection of various distributed generation (DG) farms or main utilities to enhance the active and reactive power flow control.
Adam, Grain Philip   +4 more
core   +1 more source

Decellularized Extracellular Matrix (dECM) in Tendon Regeneration: A Comprehensive Review

open access: yesAdvanced Healthcare Materials, EarlyView.
Decellularized Extracellular Matrix (dECM) offers a promising solution by replicating the native tendon microenvironment and promoting regeneration. This review highlights advances in the decellularization methods, as well as their integration with emerging technologies and translational progress in tendon tissue engineering.
Kumaresan Sakthiabirami   +4 more
wiley   +1 more source

Multi-hierarchy control strategy in abc coordinate for modular multilevel matrix converter in fractional frequency transmission system

open access: yesThe Journal of Engineering, 2019
This paper proposes a multi-hierarchy control strategy in abc coordinate for modular multilevel matrix converter (M^3C) in fractional frequency transmission system (FFTS).
Zhujian Ou, Guangzhu Wang
doaj   +1 more source

The analytical model of modular multilevel converter based on the harmonic balance theory

open access: yesEnergy Reports, 2020
This paper proposes an analytical model for the modular multilevel converter (MMC) based on the theory of harmonic balance, which removes the iteration process for traditional models. The proposed model considers dynamic harmonic interactions between the
Lijun Xie   +5 more
doaj   +1 more source

Quasi Two-Level PWM Operation of an MMC Phase Leg with Reduced Module Capacitance [PDF]

open access: yes, 2016
The modular multilevel converter offers benefits for medium and high voltage power conversion due to indirect series connection of devices. The drawback is a large amount of capacitance that has to be installed in each module, often prohibiting its use ...
Kucka, Jakub, Mertens, Axel
core   +2 more sources

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