Results 1 to 10 of about 7,095 (298)

Adaptive Band-Pass Filter and VMD-Esprit Based Multi-Mode Monitoring Method for Broadband Electromagnetic Oscillation in “Double High” Power Systems

Energies, 2023
With the development of new power systems with high proportions of renewable energy and high proportions of power electronics equipment, the influence of broadband electromagnetic oscillations in power systems is becoming more and more significant.
Tie Zhong, Heling Yang, Cong Sun, Chuang Liu, Junrui Chen   +4 more
doaj   +4 more sources

A Multi-Mode Recognition Method for Broadband Oscillation Based on Compressed Sensing and EEMD

Applied Sciences
In power systems, the application of wind power generation equipment and power electronic devices leads to an increased frequency of broadband oscillation events, and the detection of oscillation information becomes extremely difficult, due to the ...
Jinggeng Gao, Honglei Xu, Yong Yang, Haoming Niu, Jinping Liang, Haiying Dong   +5 more
doaj   +4 more sources

A Multi-Mode Recognition Method for Broadband Oscillation Based on CS-OMP and Adaptive VMD

Energies
Due to the application of power electronics and wind power generation equipment in power systems, broadband oscillation events constantly appear, which makes broadband oscillation difficult to detect due to the limitations of communication bandwidth and ...
Jinggeng Gao, Honglei Xu, Yong Yang, Xujun Zhang, Xiangde Mao, Haiying Dong   +5 more
doaj   +4 more sources

Cavity-enhanced broadband photonic Rabi oscillation [PDF]

Physical Review A, 2021
5 pages, 3 ...
Rikizo Ikuta, Toshiki Kobayashi, Tomohiro Yamazaki, Nobuyuki Imoto, Takashi Yamamoto   +4 more
openaire   +3 more sources

Dynamics of Long-Range Temporal Correlations in Broadband EEG During Different Motor Execution and Imagery Tasks [PDF]

Frontiers in Neuroscience, 2021
Brain activity is composed of oscillatory and broadband arrhythmic components; however, there is more focus on oscillatory sensorimotor rhythms to study movement, but temporal dynamics of broadband arrhythmic electroencephalography (EEG) remain ...
Maitreyee Wairagkar, Maitreyee Wairagkar, Maitreyee Wairagkar, Yoshikatsu Hayashi, Slawomir J. Nasuto   +4 more
doaj   +2 more sources

Research on broadband oscillation characteristics and additional damping control of new energy grid-connected systems [PDF]

Frontiers in Energy Research
The large-scale grid connection of new energy sources makes the power system highly electronic. The resulting broadband oscillation problem is the main challenge hindering the safe and stable operation of current high-proportion new energy power systems.
Qian Feng, Zhaoxin Du, Desheng Zhou, Xingang Yang, Aiqiang Pan, Jiaxin Zuo, Xiu Yang   +6 more
doaj   +2 more sources

Long-metallic-strip array with parasitic rings: an efficient metasurface for dual-broadband electromagnetic window at large angles [PDF]

Nanophotonics
The long-metallic-strip (LMS) array proposed by J. B. Pendry has been widely studied in electromagnetic windows. However, it could only work for the single-band window, not the dual-band one, due to the plasma-like oscillation attenuating with increasing
Li Tiefu, Chen Jinwei, Jia Yuxiang, Fu Xinmin, Han Yajuan, Yang Jie, Liu Zhaotang, Ding Chang, Feng Cunqian, Wang Jiafu   +9 more
doaj   +2 more sources

Broadband Impedance Modeling and Sub/Super-synchronous Oscillation Analysis of Steam Turbine Generator

Zhongguo dianli
Impedance-based modeling and analysis method is currently one of the effective tools to analyze and solve the problem of renewable energy grid-connected broadband oscillation.
Muchi ZHAO, Haijiao WANG, Chun LIU, Guoqing HE, Yanxia SUN, Panpan WANG   +5 more
doaj   +2 more sources

Output Characterization of 220 nm Broadband 1250 nm Wavelength-Swept Laser for Dynamic Optical Fiber Sensors

Sensors, 2022
Broadband wavelength-swept lasers (WSLs) are widely used as light sources in biophotonics and optical fiber sensors. Herein, we present a polygonal mirror scanning wavelength filter (PMSWF)-based broadband WSL using two semiconductor optical amplifiers ...
Gi Hyen Lee, Soyeon Ahn, Min Su Kim, Sang Won Lee, Ji Su Kim, Byeong Kwon Choi, Srinivas Pagidi, Min Yong Jeon   +7 more
doaj   +2 more sources

Optical Parametric Oscillation with Ultra-Low Power Threshold in a Dimer of Active-Passive Cavities

Crystals, 2021
Optical parametric oscillation can convert the input laser into a couple of coherent optical output with signal and idler frequencies. It is an important method for the realization of the broadband middle infrared tunable lasers.
Bo Lu, Chen-Rui Fan, Jun-Yang Song, Chuan Wang   +3 more
doaj   +2 more sources