Results 1 to 10 of about 22,219,137 (274)

Small Signal Model of Modular Multilevel Matrix Converter for Fractional Frequency Transmission System [PDF]

open access: yesIEEE Access, 2019
Fractional frequency transmission is a promising technology for medium distance offshore wind power transmission. The key component in the fractional frequency transmission system (FFTS) is the modular multilevel matrix converter (M3C). It is regarded as
Jiajie Luo, Xiao-Ping Zhang, Ying Xue
doaj   +7 more sources

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   +2 more sources

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   +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   +2 more sources

Harmonic characteristics analysis of modular multilevel matrix converter for fractional frequency transmission system

open access: yes电力工程技术, 2022
The modular multilevel matrix converter (M3C) is the core equipment for fractional frequency transmission system (FFTS). The AC-AC conversion of M3C leads to direct coupling of the ac electrical quantities at different frequencies,causing complex ...
SUN Yuwei   +5 more
doaj   +2 more sources

Asymptotic stabilization for Bresse transmission systems with fractional damping [PDF]

open access: yesElectronic Journal of Differential Equations, 2023
In this article, we study the asymptotic stability of Bresse transmission systems with two fractional dampings. The dissipation mechanism of control is given by the fractional damping term and acts on two equations.
Jianghao Hao, Dingkun Wang
doaj   +2 more sources

Research on Slot-pole Combination in High-power Direct-drive PM Vernier Generator for Fractional Frequency Transmission System

open access: yesCES Transactions on Electrical Machines and Systems, 2022
Offshore wind energy is an important part of clean energy, and the adoption of wind energy to generate electricity will contribute to the implementation of the carbon peaking and carbon neutrality goals.
Zhidong Yuan   +4 more
doaj   +2 more sources

A global asymptotical stable control scheme for a Hexverter in fractional frequency transmission systems [PDF]

open access: yesJournal of Modern Power Systems and Clean Energy, 2019
A fractional frequency transmission system (FFTS) is the most competitive choice for long distance transmission of offshore wind power, while the Hexverter, as a newly proposed direct AC/AC converter, is an attractive choice for its power conversion ...
Yongqing Meng   +4 more
doaj   +2 more sources

Economic analysis of fractional frequency transmission system for offshore wind farm based on levelized cost of electricity

open access: yesZhejiang dianli
In the context of large-scale and medium-and-long distance offshore wind power development, a comprehensive economic comparison has been made between fractional frequency transmission system (FFTS) and other transmission systems.
QI Lei   +6 more
doaj   +2 more sources

Research on Quasi-Proportional Resonant Control of Modular Multilevel Matrix Converter [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2021
As a new AC/AC conversion device, modular multilevel matrix converter (MMMC) has advantages in low frequency and large capacity applications such as fractional frequency transmission system, whereas its bridge arm current control is complicated.
Wang Mingdong   +4 more
doaj   +1 more source

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