Results 31 to 40 of about 508,346 (348)

A Cycle-Based Formulation and Valid Inequalities for DC Power Transmission Problems with Switching

open access: yes, 2015
It is well-known that optimizing network topology by switching on and off transmission lines improves the efficiency of power delivery in electrical networks. In fact, the USA Energy Policy Act of 2005 (Section 1223) states that the U.S.
Dey, Santanu S.   +5 more
core   +1 more source

p800kV DC Power Transmission Converter Valve Structure Research [PDF]

open access: yesProceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering, 2015
Converter valve was the core equipment of HVDC power transmission project, followed by the three-phase AC voltage was connected to the DC side to get the desired DC voltage and realize the power of control, its value accounted for about converter station complete sets of equipment for a total of 22 ~ 25%.
Luxiang Zong   +3 more
openaire   +1 more source

Frequency Dynamic Characteristic Analysis of Ultra-Low Frequency Oscillation and Multi-Machine GPSS Parameter Tuning Method [PDF]

open access: yesDianli jianshe
[Objective] The growing concern over frequency stability is attributed to the decreasing overall inertia of power systems. To improve the analysis of frequency stability and performance of modern power systems, a frequency dynamic characteristic analysis
ZENG Pijiang, XU Hao, YE Pengju, ZHENG Chao, SAI Xiangyu, CHEN Gang, ZHAO Yong, JIANG Chuyang, GAN Deqiang
doaj   +1 more source

A Comprehensive Loss Model and Comparison of AC and DC Boost Converters

open access: yesEnergies, 2021
DC microgrids have become a prevalent topic in research in part due to the expected superior efficiency of DC/DC converters compared to their AC/DC counterparts.
Daniel L. Gerber   +6 more
doaj   +1 more source

A 100-Element MESFET Grid Oscillator [PDF]

open access: yes, 1990
A planar grid oscillator which combines the outputs of 100 devices quasi-optically is presented. The planar configuration is attractive because it is compatible with present-day IC fabrication techniques.
Kim, Moonil   +4 more
core   +1 more source

Simulation and analysis of UHV half wavelength and DC hybrid transmission system

open access: yesGlobal Energy Interconnection, 2018
The scenarios of a half wavelength transmission line (HWTL) connected to the original DC asynchronous interconnection system are established based on the quasi-steady state model of HWTL, which include single or double loops of single channel and multi ...
Qianyu Zhao   +4 more
doaj   +1 more source

Resource Allocation for Delay Differentiated Traffic in Multiuser OFDM Systems [PDF]

open access: yes, 2006
Most existing work on adaptive allocation of subcarriers and power in multiuser orthogonal frequency division multiplexing (OFDM) systems has focused on homogeneous traffic consisting solely of either delay-constrained data (guaranteed service) or non ...
Liang, Ying-Chang   +2 more
core   +2 more sources

Remote Monitoring in Myasthenia Gravis: Exploring Symptom Variability

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare, autoimmune disorder characterized by fluctuating muscle weakness and potential life‐threatening crises. While continuous specialized care is essential, access barriers often delay timely interventions. To address this, we developed MyaLink, a telemedical platform for MG patients.
Maike Stein   +13 more
wiley   +1 more source

Research on an AC/DC networking and transmission scheme for large-scale onshore hydro-wind-solar integrated bases

open access: yesZhejiang dianli, 2023
The large-scale onshore hydro-wind-solar integrated bases in southwest China have great development potential, and it is necessary to determine a suitable scheme for power transmission to the eastern load center.
XU Zheng   +4 more
doaj   +1 more source

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao   +6 more
wiley   +1 more source

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