Results 61 to 70 of about 985,505 (212)

Effect of a 14-Day Mindfulness Intervention on Daily Desire Experiences and Desire Regulation [PDF]

, 2019
A growing body of research suggests that mindfulness, a receptive attentiveness to one’s present moment experiences, has the potential to adaptively regulate habitual behaviors.
Jahan, Nabila Farhin
core   +2 more sources

Ultrafast Structural Dynamics of BlsA, a Photoreceptor from the Pathogenic Bacterium Acinetobacter baumannii [PDF]

, 2014
Acinetobacter baumannii is an important human pathogen that can form biofilms and persist under harsh environmental conditions. Biofilm formation and virulence are modulated by blue light, which is thought to be regulated by a BLUF protein, BlsA.
Adelbert Bacher, Agnieszka Gil, Allison Haigney, Andras Lukacs, Barth A., Bitrian M., Boris Illarionov, Brust R., Carlos Simmerling, Cheng-Tsung Lai, Decatur S. M., Gaddy J. A., Giamarellou H., Golic A., Gregory M. Greetham, Grinstead J. S., Haigney A., Haigney A., Hasegawa K., Hasegawa K., Ian P. Clark, Jung A., Kiri Addison, Kondo M., Losi A., Lukacs A., Markus Fischer, Masuda S., Masuda S., Masuda S., McQueary C. N., Michael Towrie, Mussi M. A., Pelton J. T., Peter J. Tonge, Richard Brust, Ryu-Ryun Kim, Shahrier Hossain, Stelling A. L., Stephen R. Meech, Suzuki H., Takahashi R., Wu Q., Yuan H., Yuan H., Yuan H.   +45 more
core   +2 more sources

Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory

International Journal of Electrical Power & Energy Systems
Wind turbines support grid frequency by rotor decelerating and then accelerating, but the instant power imbalance caused by rotor speed recovery may lead to a secondary frequency drop.
Zhiting Zhou, Hui Li, Jie Zheng, Hongtao Tan, Xuewei Xiang, Ran Yao   +5 more
doaj   +1 more source

Unified centralised/decentralised frequency control structure for microgrids

IET Renewable Power Generation, 2021
When the microgrid (MG) operates in islanded mode, the frequency adjustment is performed through the secondary control. This control can be achieved through centralised, distributed or decentralised strategies.
Paulo Thiago deGodoy, Adriano Batista deAlmeida, Diogo Marujo   +2 more
doaj   +1 more source

Primary and secondary frequency regulation in a longitudinal hydrothermal system by Liapunov method

Electric Power Systems Research, 2008
Abstract The problem of primary and secondary frequency regulation of a multi-machine power system is analysed with a Liapunov function method based on a quadratic performance index. The main purpose is to determine the best set of parameters of primary and secondary regulation according to an optimisation criterion.
Moya, O., Ramos, A.
openaire   +3 more sources

Gather-and-broadcast frequency control in power systems

, 2016
We propose a novel frequency control approach in between centralized and distributed architectures, that is a continuous-time feedback control version of the dual decomposition optimization method.
Dörfler, Florian, Grammatico, Sergio
core   +1 more source

Voltage regulation considerations for the design of hybrid distribution transformers [PDF]

, 2014
The future substation depends on finding a way to mitigate the effects of the drawbacks of the conventional legacy by employing the efficiency of the solid state switches [1].
Alqarni, M, Darwish, M, Radi, MA
core   +1 more source

On BESS Capacity Optimization of Hybrid Coal-Fired Generator and BESS Power Station for Secondary Frequency Regulation

IEEE Access
Integrating battery energy storage systems (BESS) into a coal-fired generator can enhance power systems’ secondary frequency regulation capability.
Xinsong Zhang, Ziyun Ma, Beiping Gu, Lurui Fang, Xiuyong Yu   +4 more
doaj   +1 more source

Virtual Synchronous Generator Control Strategy Based on Shipborne Three-Phase Two-Level DC–AC Converters

Journal of Marine Science and Engineering
In response to the International Maritime Organization’s emission reduction targets, ship power systems are transitioning toward microgrid architectures with high renewable energy penetration.
Gufeng Jiang, Ling Yu, Min Chi, Hongxing Chen   +3 more
doaj   +1 more source

Coordinated Secondary Frequency Regulation Strategy of Doubly-Fed Induction Generator and Electric Vehicle

Applied Sciences, 2019
Wind turbines can participate in frequency regulation by controlling active power output, but the indeterminacy and volatility of wind power result in low reliability of frequency support.
Qian Zhang, Yan Li, Chen Li, Zhuwei Ding, Wenrui Xie   +4 more
doaj   +1 more source