Results 91 to 100 of about 752,939 (303)
International Journal of Electrical Power & Energy SystemsThe grid-connected inverters (GCIs) controlled by traditional Current-Source Mode (CSM) and Voltage-Source Mode (VSM) face challenges in simultaneously meeting the requirements for small-signal stability, power-response, and grid-support.
Feng Han, Xing Zhang, Ming Li
doaj +1 more source
Energies, 2019 The dq impedance stability analysis for a grid-connected current-control inverter is based on the impedance ratio matrix. However, the coupled matrix brings difficulties in deriving its eigenvalues for the analysis based on the general Nyquist criterion.
Chuanyue Li +6 more
doaj +1 more source
Analysis of small signal stability margins using genetic optimization
, 1998 Power system small signal stability analysis aims to explore different small signal stability conditions and controls, namely: (1) exploring the power system security domains and boundaries in the space of power system parameters of interest, including ...
Yuri V. Makarov +5 more
core +1 more source
pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley +1 more source
Small-signal stability constrained optimal power flow considering eigenvalue distribution [PDF]
In the existing small-signal stability constrained optimal power flow (SSSC-OPF) algorithms, only the rightmost eigenvalue or eigenvalues that do not satisfy a given threshold, e.g ., damping ratio threshold and real-part threshold of eigenvalue, are ...
Wang, Yi +4 more
core +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source
Small signal stability enhancement of WSCC system using PSO based PSS
Franklin OpenA number of synchronous generators are used in parallel in contemporary power systems. Studies are regularly carried out to make sure that the generators will work as intended in the case of any malfunctions or modifications to the system conditions. The
R. Ramya +3 more
doaj +1 more source
Small signal stability region of power systems with DFIG in injection space
Journal of Modern Power Systems and Clean Energy, 2013 The modal analysis method is utilized to study the influence of doubly-fed induction generator (DFIG) on electromechanical oscillations. On this basis, the small signal stability region (SSSR) of power systems with DFIG in injection space is evaluated ...
Chao Qin, Yixin Yu
doaj +1 more source
The human gut microbiome across the life course
FEBS Letters, EarlyView.Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero +4 more
wiley +1 more source
IEEE Open Access Journal of Power and EnergyReconfiguration in low-inertia microgrids (MGs) can often result in a critical small-signal stability margin. In this condition, the ability of inverter-based resources (IBRs) to provide voltage and frequency support may be insufficient.
Tossaporn Surinkaew +3 more
doaj +1 more source