Results 1 to 10 of about 2,437,245 (292)

Oscillation Suppression in the Sense Mode of a High-Q MEMS Gyroscope Using a Simplified Closed-Loop Control Method

open access: yesSensors, 2018
The oscillation of the sense mode of the micro-machined Coriolis vibratory gyroscope (MCVG) with high quality factor (Q) is analyzed in this study and the corresponding force feedback control scheme is presented to suppress this oscillation.
Qiang Shen   +3 more
doaj   +3 more sources

A Multi-Mode Recognition Method for Broadband Oscillation Based on CS-OMP and Adaptive VMD

open access: yesEnergies
Due to the application of power electronics and wind power generation equipment in power systems, broadband oscillation events constantly appear, which makes broadband oscillation difficult to detect due to the limitations of communication bandwidth and ...
Jinggeng Gao   +5 more
doaj   +3 more sources

A Multi-Mode Recognition Method for Broadband Oscillation Based on Compressed Sensing and EEMD

open access: yesApplied Sciences
In power systems, the application of wind power generation equipment and power electronic devices leads to an increased frequency of broadband oscillation events, and the detection of oscillation information becomes extremely difficult, due to the ...
Jinggeng Gao   +5 more
doaj   +3 more sources

Simplified Modelling of Oscillation Mode for Wind Power Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
Wind turbine generators can be operated in various types of system configurations. Once the configurations change, the system oscillation mode shapes change accordingly.
Chi Hsiang Lin
doaj   +1 more source

An Improved Quantitative Analysis Method of Oscillation Mode for DFIG-Based Wind Power Base With LCC-HVDC Transmission Considering Frequency Coupling Characteristic

open access: yesIEEE Access, 2023
The line-commutated converter-based high-voltage direct-current (LCC-HVDC) transmission has become one of the main forms to deliver wind power in China. However, due to the connections of a large number of power electronic devices (PEDs), there emerges a
Haipan Li   +5 more
doaj   +1 more source

Topological Modes in Stellar Oscillations

open access: yesThe Astrophysical Journal, 2022
Abstract Stellar oscillations can be of topological origin. We reveal this deep and so far hidden property of stars by establishing a novel parallel between stars and topological insulators. We construct an Hermitian problem to derive the expression of the stellar acoustic–buoyant frequency S of nonradial adiabatic pulsations.
Leclerc, Armand   +4 more
openaire   +2 more sources

A Stability Quantitative Analysis Method of Three-Phase Four-Wire Grid-Connected Systems Considering Frequency Coupling and Sequence Components Coupling

open access: yesIEEE Access, 2023
Distribution three-phase four wire power systems are undergoing significant evolutions in physical and technical features as a result of the large-scale integration of rooftop solar photovoltaics.
Yuming Liao   +5 more
doaj   +1 more source

Oscillation modes of microtubules [PDF]

open access: yesBiology of the Cell, 2004
Abstract Microtubules are long, filamentous protein complexes which play a central role in several cellular physiological processes, such as cell division transport and locomotion. Their mechanical properties are extremely important since they determine the biological function. In a recently published experiment [Phys. Rev. Lett.
Kasas, S.   +7 more
openaire   +3 more sources

A Hybrid Energy and Mode Decomposition-Based Method for Evaluating Generators Damping in Multi-Machine Power Systems

open access: yesIEEE Access, 2021
The increasing number of low-frequency oscillation events has posed significant challenges to power system stability. It is imperative to accurately identify and properly control generators with poor or negative damping contribution for better ...
Jian Xie, Wei Sun, Kai Sun, Xiaoru Wang
doaj   +1 more source

Oscillation Modes in Multiresonant Oscillator Circuits [PDF]

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2016
This work has been funded by the Spanish Government under contract TEC2014-60283-C3-1-R, the European Regional Development Fund (ERDF/FEDER) and the Parliament of Cantabria (12.JP02.64069).
Ramírez Terán, Franco Ariel   +2 more
openaire   +2 more sources

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