Results 11 to 20 of about 22,219,137 (274)

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
exaly   +5 more sources

Small Signal Stability of Fractional Frequency Transmission System With Offshore Wind Farms [PDF]

open access: yesIEEE Transactions on Sustainable Energy, 2016
Fractional frequency transmission system (FFTS) is a relatively new transmission technology that can be used to deliver the energy from remote offshore wind farms, and it can increase the transmission capacity through the reduced transmission frequency.
Jing Li, Xiao-Ping Zhang
exaly   +5 more sources

The Effect of Fractional Orders on the Transmission Power and Efficiency of Fractional-Order Wireless Power Transmission System

open access: yesEnergies, 2018
To avoid the problems of integer-order magnetic resonant wireless power transmission (WPT) systems, such as low output power and transmission efficiency, high resonant frequency, frequency splitting, and parameter coupling, a novel WPT system based on ...
Xujian Shu, Bo Zhang
doaj   +2 more sources

A novel SoC feedback control of ESS for frequency regulation of fractional frequency transmission system with offshore wind power [PDF]

open access: yes2017 China International Electrical and Energy Conference (CIEEC), 2017
The impact of high penetration of Renewable Energy Source (RES) and the decoupled power-frequency relationship raise the concern for RES participating in the grid frequency regulation. Energy Storage System (ESS) has shown its potential in power system with RES.
Zhao, Boyang   +2 more
openaire   +3 more sources

Lyapunov stability analysis for M3C based fractional frequency transmission system utilizing generalized participation factors

open access: yesInternational Journal of Electrical Power & Energy Systems
The fractional frequency transmission systems occurs different oscillations due to the interactions between wind farm, submarine cable, and M3C components under the large signal disturbances.
Ziyue Duan   +5 more
doaj   +2 more sources

Radar matched filtering using the fractional fourier transform [PDF]

open access: yes, 2010
-A matched filter is the optimal linear filter for maximizing the signal to noise ratio (SNR) in the presence of additive noise. Matched filters are commonly used in radar systems where the transmitted signal is known and may be used as a replica to be ...
Clemente, Carmine   +2 more
core   +4 more sources

Robust load frequency control for networked power system with renewable energy via fractional‐order global sliding mode control

open access: yesIET Renewable Power Generation, 2021
Owing to random load changes and transmission time delays in interconnected power systems with renewable energy, the load frequency control scheme has become one of the main methods to keep stability and security of power systems.
Xinxin Lv   +3 more
doaj   +1 more source

Numerical Analysis of the Fractional-Order Telegraph Equations

open access: yesJournal of Function Spaces, 2021
This paper studied the fractional-order telegraph equations via the natural transform decomposition method with nonsingular kernel derivatives. The fractional result considered in the Caputo-Fabrizio derivative is Caputo sense.
Omar Fouad Azhar   +3 more
doaj   +1 more source

Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL

open access: yesIEEE Photonics Journal, 2021
In this paper, we demonstrate ultrastable radio-frequency (RF) transfer over long-haul optical fiber link. Our stabilized RF transfer technique is based on high-performance dual phase locked loops (dual-PLL) configuration which improves signal to noise ...
Chenxia Liu   +8 more
doaj   +1 more source

Effects of practical impairments on cooperative distributed antennas combined with fractional frequency reuse [PDF]

open access: yes, 2012
Cooperative Multiple Point (CoMP) transmission aided Distributed Antenna Systems (DAS) are proposed for increasing the received Signal-to-Interference-plus-Noise-Ratio (SINR) in the cell-edge area of a cellular system employing Fractional Frequency Reuse
Li, Guangjun   +9 more
core   +1 more source

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