Results 41 to 50 of about 75,653 (214)
Self-Oscillation Multicarrier Light Source Based on Recirculating Frequency Shift Loop
IEEE Photonics Journal, 2021 A novel scheme of self-oscillation multicarrier light source based on recirculating frequency shift loop (RFSL) is proposed and experimentally demonstrated in this paper.
Long Zhang +6 more
doaj +1 more source
Low frequency oscillations of the magnetosphere [PDF]
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014 Sudden pulses in the model solar wind sets the Earth's magnetosphere into damped oscillatory motions. A simple model is capable of explaining many of the basic properties of these oscillations, giving scaling laws for their characteristics in terms of the parameters of the problem, such as the Solar wind momentum density. The period of the oscillations,
Borve, Steiner +3 more
openaire +2 more sources
Applied SciencesUltra-low-frequency oscillation (ULFO) is a new problem of frequency stability in asynchronous network back-end power networks. The negative damping provided by hydropower units is the direct cause of ultra-low-frequency oscillation, and DC modulation is
Chao Xing +7 more
doaj +1 more source
Research on the Hydrodynamic Performance of a Vertical Axis Current Turbine with Forced Oscillation
Energies, 2018 For a current turbine fixed on a floating platform, the wave-induced motion responses of the platform change the hydrodynamic performance of the current turbine.
Yong Ma, Chao Hu, Yulong Li, Rui Deng
doaj +1 more source
Low Frequency Oscillations on the Dutch Coast
Coastal Engineering 1984, 1984 During several months in 1981 and 1982/1983 two extensive programs of field measurements were carried out at Egmond on the Dutch North Sea coast, one during the spring of 1981 and the other during the winter of 1982/83. In these programs researchers of the Dutch "Rijkswaterstaat", of The Delft University of Technology and of the Delft Hydraulics ...
F. Gerritsen, J. Van Heteren
openaire +2 more sources
Journal of Thermal Science and Technology, 2013 Responses of conical premixed methane/air mixture flames with equivalence ratio oscillations were numerically investigated at three different oscillation frequency regimes; low, medium and high (10, 50 and 150 s-1) under a rich condition.
Abdul Rahman Mohd ROSDZIMIN +2 more
doaj +1 more source
Study of WAMS Big Data Elastic Store Model in Low-Frequency Oscillation Analysis [PDF]
, 2020 Hua Song, Yongjun Chen
openalex +1 more source
Geodesy and Geodynamics, 2018 The observatory network of the Crustal Deformation China Seismological Bureau was equipped with vertical pendulum tiltmeter, borehole tiltmeter, tunnel extension meters, multi-component borehole strainmeter, body strainmeter and other tilt and strain ...
Yan Zhang, Fangjie Meng
doaj +1 more source
EnergiesGrid-forming (GFM) energy storage can be utilized as a backup power source for the power grid to ensure the security of the power grid. GFM energy storage can also enhance the strength of the power grid and improve its stability.
Chi Tian +4 more
doaj +1 more source
Analysis of low frequency oscillation and source location in power systems
CSEE Journal of Power and Energy Systems, 2018 The major problem in current online diagnosis and analysis for power system oscillation is mainly concerned with finding the oscillation source in a fast and correct way using the data collected by the Wide Area Measurement System (WAMS).
Yinbiao Shu, Xiaoxin Zhou, Wenfeng Li
doaj +1 more source