Articles with "frequency oscillation" as a keyword



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High‐Frequency Oscillation Networks and Surgical Outcome in Adult Focal Epilepsy

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Published in 2019 at "Annals of Neurology"

DOI: 10.1002/ana.25442

Abstract: To investigate whether high‐frequency oscillations (HFOs) show spatiotemporal propagation and assess the relevance of the earliest oscillations in relation to the seizure onset zone (SOZ) and postsurgical outcome. read more here.

Keywords: high frequency; frequency oscillation; outcome; frequency ... See more keywords
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Analysis and Suppression for Frequency Oscillation in a Wind-Diesel System

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2894011

Abstract: In a wind-diesel system with weak network architecture, many techniques are utilized to enhance its stability. However, the frequency oscillation between the grid-side converter and the diesel generator may be caused by their interactions, and… read more here.

Keywords: frequency oscillation; diesel system; wind diesel; oscillation ... See more keywords
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A Comprehensive Investigation on High-Frequency Oscillation in DC Microgrid

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Published in 2021 at "IEEE Access"

DOI: 10.1109/access.2021.3071029

Abstract: This paper presents the small-signal stability performance of a dc microgrid (MG) and investigates the interactions between the converter controllers by studying the critical modes. A comprehensive small-signal analysis using both the impedance-based method and… read more here.

Keywords: frequency oscillation; high frequency; comprehensive investigation; oscillation ... See more keywords
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Pulse Phase Shift Based Low-Frequency Oscillation Suppression for PT Controlled CCM Buck Converter

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Published in 2018 at "IEEE Transactions on Circuits and Systems II: Express Briefs"

DOI: 10.1109/tcsii.2018.2863698

Abstract: Pulse train (PT) control has the advantages of simple structure, fast transient response, low cost, and free compensation network. However, for the power converters operated in continuous conduction mode, undesired low-frequency oscillation of output voltage… read more here.

Keywords: buck converter; frequency oscillation; phase shift; converter ... See more keywords
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Reduced-Order Dynamic Model of Modular Multilevel Converter in Long Time Scale and Its Application in Power System Low-Frequency Oscillation Analysis

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Published in 2019 at "IEEE Transactions on Power Delivery"

DOI: 10.1109/tpwrd.2019.2900070

Abstract: A reduced-order dynamic phasor model of modular multilevel converter (MMC) in long time scale, which is applied for power system low-frequency oscillation analysis, is investigated. A tenth-order dynamic phasor model is derived in consideration of… read more here.

Keywords: frequency oscillation; time; order; low frequency ... See more keywords
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Study of WAMS Big Data Elastic Store Model in Low-Frequency Oscillation Analysis

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Published in 2020 at "Mathematical Problems in Engineering"

DOI: 10.1155/2020/3541973

Abstract: Low-frequency oscillation (LFO) is among the key factors that threaten interconnected power grids’ security and stability and restrict transfer capability. In particular, power systems incur now and then weak damping and forced oscillations. To monitor… read more here.

Keywords: frequency oscillation; analysis; model; elastic store ... See more keywords
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Optimal Damping Controller Design for Large-scale PV Farms to Damp the Low-frequency Oscillation

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Published in 2019 at "International Journal of Renewable Energy Research"

DOI: 10.20508/ijrer.v9i4.10040.g7769

Abstract: With increasing the number of large-scale photovoltaic (PV) farms (LPFs) connected to the power grids in the world, some characteristics of power systems are affected. Studies show that the LPFs could have the negative effect… read more here.

Keywords: controller; optimal damping; frequency oscillation; large scale ... See more keywords
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Localization of the Epileptogenic Zone by Multimodal Neuroimaging and High-Frequency Oscillation

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Published in 2021 at "Frontiers in Human Neuroscience"

DOI: 10.3389/fnhum.2021.677840

Abstract: Accurate localization of the epileptogenic zone (EZ) is a key factor to obtain good surgical outcome for refractory epilepsy patients. However, no technique, so far, can precisely locate the EZ, and there are barely any… read more here.

Keywords: epileptogenic zone; high frequency; frequency oscillation; localization ... See more keywords
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Analysis of Mode Interaction in Ultra-low Frequency Oscillation Based on Trajectory Eigenvalue

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Published in 2020 at "Journal of Modern Power Systems and Clean Energy"

DOI: 10.35833/mpce.2019.000162

Abstract: Complex phenomena such as prolongedly undamped ultra-low frequency oscillation (ULFO) and eigenmode re-excitation are observed in the simulations of hydroelectric power systems. Emphases are put on nonlinearities and mode interactions, which cannot be analyzed by… read more here.

Keywords: analysis; low frequency; ultra low; frequency oscillation ... See more keywords