Results 61 to 70 of about 267,926 (301)

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

Coordinated Control of Transient Voltage Support in Doubly Fed Induction Generators

Energies
The large-scale integration of wind power significantly alters the voltage dynamic characteristics of power systems. Wind turbines have a weak ability to withstand grid disturbances and have difficulty in providing effective reactive power support during
Guanghu Xu, Jian Qiu, Jianxin Zhang, Huanhuan Yang, Qin Gao, Tuo Jiang, Yuan Wang   +6 more
doaj   +1 more source

Stability enhancement of a hybrid micro-grid system in grid fault condition [PDF]

, 2012
Low voltage ride through capability augmentation of a hybrid micro-grid system is presented in this paper which reflects enhanced reliability in the system. The control scheme involves parallel connected multiple ac-dc bidirectional converters.
15th International Conference on Electrical Machines and Systems, ICEMS 2012, Al-Durra, Ahmed, Ambia, Mir Nahidul, Caruana, Cedric, Muyeen, Syed M.   +4 more
core  

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Data Driven Stochastic Energy Management for Isolated Microgrids Based on Generative Adversarial Networks Considering Reactive Power Capabilities of Distributed Energy Resources and Reactive Power Costs

IEEE Access, 2021
This paper proposes a two-stage stochastic energy management (EM) in an isolated microgrid (MG) to decide for the day-ahead optimal dispatch. The dispatch aims to effectively manage the MG power sources, including intermittent renewable energy sources ...
Shady M. Sadek, Walid A. Omran, M. A. Moustafa Hassan, Hossam E. A. Talaat   +3 more
doaj   +1 more source

Short-term energy storage for power quality improvement in weak MV grids with distributed renewable generation [PDF]

, 2016
The intermittent and stochastic nature of renewable energy sources impose several challenges for the operation of electrical networks, and affect power quality levels as well.
del Rosario Calaf, Gerard, Díaz González, Francisco, Girbau Llistuella, Francesc, Gomis Bellmunt, Oriol   +3 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Development Application and Dynamic Characteristics of Synchronous Condenser in Electric Power System

南方能源建设
[Introduction] With the establishment of the energy Internet architecture mainly relying on new energies, HVDC transmission has become an important way of power transmission, power grids present a new characteristic of "strong DC and weak AC ...
Dongqing ZHANG, Guohua ZHANG, Lingling XU, Shengfu GAO   +3 more
doaj   +1 more source

Adaptive Gains Control Scheme for PMSG-Based Wind Power Plant to Provide Voltage Regulation Service

Energies, 2019
High-penetration wind power will count towards a significant portion of future power grid. This significant role requires wind turbine generators (WTGs) to contribute to voltage and reactive power support.
Jianfeng Dai, Yi Tang, Jun Yi
doaj   +1 more source

Enhancing LVRT capability of DFIG using cooperative control of BTFCL and RPC

Automatika, 2023
To integrate the high penetration of power from wind farms into a grid, one of the key requirements posed by new grid codes is Low Voltage Ride Through (LVRT) capability. This paper studies voltage compensation-based methods to improve fault ride-through
K. Gireeshma, S. Chandramohan
doaj   +1 more source