Results 51 to 60 of about 248,319 (296)

Reactive Power Compensation Scheme for Urban Rail Power Supply System Considering Main Substation Resource Sharing

Chengshi guidao jiaotong yanjiu
[Objective] The resource sharing among main substations in urban rail transit power supply system can lead to significant cost savings. In this context, it is essential to investigate reactive power compensation schemes for different phases of main ...
Liying LI, Dan ZHOU, Shan LIN, Dayun ZOU, Haiqi JIN, Kai XIE, He QI, Jian ZHANG   +7 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Performance evaluation of secondary control policies with respect to digital communications properties in inverter-based islanded microgrids [PDF]

, 2016
A key challenge for inverted-based microgrids working in islanded mode is to maintain their own frequency and voltage to a certain reference values while regulating the active and reactive power among distributed generators and loads.
Castilla Fernández, Miguel, García de Vicuña Muñoz de la Nava, José Luis, Martí Colom, Pau, Martín Rull, Enric Xavier, Miret Tomàs, Jaume, Velasco García, Manel   +5 more
core   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Consensus enhanced droop control strategy for islanding mode multi converter system

Energy Reports, 2022
Under the gradual expansion of the new energy distributed generation, the islanding multi converter microgrid system plays a great role. The stability of voltage and frequency of multi converter systems in islanding mode and the coordination of power ...
Xiaomeng Zhang, Xiongchao Yang, Yang Han, Ping Yang, Amr S. Zalhaf   +4 more
doaj   +1 more source

A power consensus algorithm for DC microgrids [PDF]

, 2017
A novel power consensus algorithm for DC microgrids is proposed and analyzed. DC microgrids are networks composed of DC sources, loads, and interconnecting lines.
De Persis, Claudio, Dorfler, Florian, Weitenberg, Erik   +2 more
core   +3 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

A data-driven droop control strategy for reactive power sharing and stability enhancement in islanded AC microgrids

International Journal of Electrical Power & Energy Systems
In islanded microgrids, distributed generation (DG) units employing conventional droop control often exhibit significant mismatches in reactive power sharing. This issue primarily arises from the mismatches in line impedances. These inaccuracies not only
Adham Osama, Tarek H.M. EL-Fouly, Hatem H. Zeineldin, Ehab F. El-Saadany   +3 more
doaj   +1 more source

A Reactive Power-Voltage Control Strategy of an AC Microgrid Based on Adaptive Virtual Impedance

Energies, 2019
As an effective carrier of distributed generation, a microgrid is an effective way to ensure that distributed power can be reasonably utilized. However, due to the property of line impedance and other factors in a microgrid, reactive power supplied by ...
Yao Liu, Lin Guan, Fang Guo, Jianping Zheng, Jianfu Chen, Chao Liu, Josep M. Guerrero   +6 more
doaj   +1 more source