Results 51 to 60 of about 51,905 (293)

Performance Enhancement of QT1-PLL by using cascaded filtering stage

Energy Reports, 2022
As one of the state-of-the-art grid voltage synchronization techniques, Quasi-type-1 structure based phase locked loop (QT1-PLL) achieves an excellent detection performance when only odd-order harmonics needs to be eliminated by Moving average filter ...
Xian Wang, Dazhi Wang, Linxin Yu, Ye Li, Shuai Zhou   +4 more
doaj   +1 more source

Emergence of multicluster chimera states [PDF]

, 2015
We thank Prof. L. Huang for helpful discussions. This work was partially supported by ARO under Grant No. W911NF-14-1-0504 and by NSF of China under Grant No. 11275003. The visit of NY to Arizona State University was partially sponsored by Prof. Z. Zheng
Grebogi, Celso, Huang, Zi-Gang, Lai, Ying-Cheng, Yao, Nan   +3 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Synchronization Stability Analysis of PLL-Based Grid-Connected VSC System by Voltage Space Vectors

CSEE Journal of Power and Energy Systems
This paper focuses on synchronization stability analysis of the power system, in which power electronics are synchronized by the phase-locked loop (PLL).
Huadong Sun, Shuyan Wang, Shiyun Xu, Jingtian Bi, Yiming Wang   +4 more
doaj   +1 more source

An Enhanced Control Strategy for Mitigation of State-Transition Oscillation Phenomena in Grid-Forming Self-Synchronized Converter System with Islanded Power System

Energies, 2021
This paper proposes an enhanced control strategy for mitigating state-transition oscillations in active and reactive power responses of self-synchronized converter system to secure the islanded power system stability.
Ki Ryong Kim, Sangjung Lee, Jong-Pil Lee, Jaesik Kang   +3 more
doaj   +1 more source

Dynamics of fully coupled rotators with unimodal and bimodal frequency distribution

, 2015
We analyze the synchronization transition of a globally coupled network of N phase oscillators with inertia (rotators) whose natural frequencies are unimodally or bimodally distributed. In the unimodal case, the system exhibits a discontinuous hysteretic
A Winfree, AL Do, B Ermentrout, B Trees, CU Choe, D Pazó, DJ Jörg, EA Martens, F Dörfler, F Ginelli, G Benettin, G Filatrella, G Montaseri, HA Tanaka, HA Tanaka, J Acebrón, J Acebrón, JD Crawford, M Rohden, MG Rosenblum, P Jaros, P Ji, S Gupta, S Olmi, S Olmi, SH Strogatz, T Dahms, T Nishikawa   +27 more
core   +2 more sources

Age‐Related Characteristics of SYT1‐Associated Neurodevelopmental Disorder

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We describe the clinical manifestations and developmental abilities of individuals with SYT1‐associated neurodevelopmental disorder (Baker‐Gordon syndrome) from infancy to adulthood. We further describe the neuroradiological and electrophysiological characteristics of the condition at different ages, and explore the associations ...
Sam G. Norwitz, Josefine Eck, Joel S. Winston, Kate Baker   +3 more
wiley   +1 more source

Nonlinear Modeling and Transient Stability Analysis of Grid-Connected Voltage Source Converters during Asymmetric Faults Considering Multiple Control Loop Coupling

Applied Sciences
As large-scale renewable energy sources are increasingly integrated into AC grids via voltage source converters (VSCs), the transient synchronization stability of phase-locked loop (PLL)-based VSCs during fault ride-through is gaining more attention ...
Jingkuan Guo, Denghui Zhai, Xialin Li, Zhi Wang   +3 more
doaj   +1 more source

A Novel Structure of a Power System Stabilizer for Microgrids

Energies, 2021
This paper proposes a novel structure of a power system stabilizer (PSS) to improve the stability of synchronous generators (SGs) in microgrids. Microgrids are relatively vulnerable in terms of stability due to their small size and low inertia.
Jong Ju Kim, June Ho Park
doaj   +1 more source

Synchronization is optimal in non-diagonalizable networks [PDF]

, 2006
We consider the problem of maximizing the synchronizability of oscillator networks by assigning weights and directions to the links of a given interaction topology.
Adilson E. Motter, D. J. Watts, J. D. Skufca, Takashi Nishikawa   +3 more
core   +1 more source