Results 11 to 20 of about 176 (97)

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

An Overview of Applications of the Modular Multilevel Matrix Converter [PDF]

open access: yesEnergies, 2020
The modular multilevel matrix converter is a relatively new power converter topology suitable for high-power alternating current (AC)-to-AC applications.
Cárdenas Dobson, Roberto   +7 more
core   +4 more sources

Control of wind energy conversion systems based on the Modular Multilevel Matrix converter [PDF]

open access: yesIEEE Transactions on Industrial Electronics, 2017
The nominal power of single Wind Energy Conversion Systems (WECS) has been steadily growing, reaching power ratings close to 10MW. In the power conversion stage, medium-voltage power converters are replacing the conventional low-voltage back-to-back ...
Cardenas, Roberto   +6 more
core   +4 more sources

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

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,
Cardenas, Roberto   +7 more
core   +4 more sources

Design and control of modular multilevel matrix converter with symmetrically integrated energy storage for low frequency AC system

open access: yesIET Renewable Power Generation
Integrating energy storage units (ESUs) into part of sub‐modules (SMs) enables the decoupling active power control for the modular multilevel matrix converter (M3C).
Yingjie Tang, Zheren Zhang, Zheng Xu
doaj   +2 more sources

Vector control of a modular multilevel matrix converter operating over the full output-frequency range [PDF]

open access: yesIEEE Transactions on Industrial Electronics, 2019
The Modular Multilevel Matrix Converter ( M 3 C ) is an ac-to-ac converter topology suitable for the control of high-power variable-speed drives. The control of this converter is complex, particularly when the two ac system frequencies are similar or ...
Cardenas, Roberto   +6 more
core   +3 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   +1 more source

Understanding peripherality in a multidimensional geographical, socioeconomic, and institutional context: Evidence from Greece

open access: yesRegional Science Policy &Practice, Volume 15, Issue 7, Page 1424-1457, September 2023., 2023
Abstract This paper develops a multidimensional methodological framework for examining the geographical handicaps and associated socioeconomic drawbacks of nomenclature of territorial units for statistics (NUTS) III regions in Greece to conceive diverse dimensions of peripherality and target the de‐peripheralization of peripheral regions.
Dimitrios Tsiotas, Vassilis Tselios
wiley   +1 more source

An isolated modular multi‐level AC/AC converter with high‐frequency link and pulse flip circuit for fractional frequency transmission system application

open access: yesIET Power Electronics, Volume 15, Issue 16, Page 1814-1830, 16 December 2022., 2022
Abstract Based on the modular topology and the traditional voltage‐sourced converter (VSC) model, this paper presents an isolated modular multi‐level AC/AC converter with high‐frequency (HF) link and pulse flip circuit for fractional frequency transmission system (FFTS) application.
Yongqing Meng   +5 more
wiley   +1 more source

Grid integration and fault ride‐through of fractional frequency offshore wind power system based on Y‐connected modular multilevel converter

open access: yesIET Generation, Transmission &Distribution, Volume 16, Issue 15, Page 2977-2988, August 2022., 2022
Abstract Fractional frequency transmission is a promising solution to offshore wind power integration. This paper proposes a new grid integration scheme of fractional frequency offshore wind power system (FFOWPS) based on Y‐connected modular multilevel converter (Y‐MMC).
Yongqing Meng   +5 more
wiley   +1 more source

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