Results 41 to 50 of about 7,881 (155)

Experimental Investigation on Cumulative Effects of Transformer Winding Deformation Under Short‐Circuit Impulses

IET Electric Power Applications
Power transformer windings are susceptible to deformation after multiple short‐circuit impulses, threatening power grid stability. Currently, there is a lack of experimental data on various characteristic parameters of failures after multiple short ...
Jun Liu, She Chen, Feng Wang, Dengfeng Zhu, Xu Li, Yao Zhong, Zhongxiang Li   +6 more
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Comparison of Motion Artefact Reduction Methods and the Implementation of Adaptive Motion Artefact Reduction in Wearable Electrocardiogram Monitoring

Sensors, 2020
A motion artefact is a kind of noise that exists widely in wearable electrocardiogram (ECG) monitoring. Reducing motion artefact is challenging in ECG signal preprocessing because the spectrum of motion artefact usually overlaps with the very important ...
Xiang An, George K. Stylios
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Wide-band modelling of tower-footing grounding systems based on the impulse response measurement [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2019
The tower footing grounding system is of major importance for analysis of the lightning overvoltages on an overhead transmission line during backflashover and shielding failure.
Jasika Ranko, Mrvić Jovan, Obradović Stefan, Simić Ninoslav   +3 more
doaj  

Impulsive impedances in lossless circuits: Fourierand Laplace methods

Electronics Letters, 2000
A proposal for adding impulsive components of impedance/admittance to the reactance/susceptance for lossless transmission lines is extended to all lossless resonant circuits. This new Fourier analysis yields a finite rate of energy transfer from a lossless source while the orthodox analysis would give an unbounded steady-state energy transfer.
openaire   +1 more source

Validation of frequency-varying characteristics of soil electrical parameters and their applicability in impulse response

电力工程技术
There is a great difference between the transient response characteristics and the power frequency response characteristics of the grounding device under lightning strike. Its grounding impedance decreases under the action of soil impulse characteristics.
Qirui WANG, Chun LI, Fengrun WANG, Zhihui ZHENG, Tian WU, Hailiang LU   +5 more
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Online estimation of wideband output impedance and control parameters of single-phase inverters using pseudo-random perturbation

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The growing deployment of single-phase inverters in residential low-voltage distribution networks poses new challenges to system stability and power quality.
Ian Paul Gerber, Fredrick Mukundi Mwaniki, Hendrik Johannes Vermeulen   +2 more
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Early Fault Identification Method of Medium Voltage Cable Based on Impulse Impedance Characteristics

工程科学与技术
ObjectiveCables are widely used in urban distribution networks due to their high reliability, strong environmental adaptability, and low maintenance costs, gradually replacing traditional overhead lines and becoming a key component of urban power ...
ZHANG Xiang, WU Hongmei, CUI Chongyu, MENG Pengfei, LI Tengfei, MA Juzhong   +5 more
doaj  

Bayesian Time-Domain Ringing Suppression Approach in Impulse Ultrawideband Synthetic Aperture Radar

Remote Sensing
Impulse ultrawideband (UWB) synthetic aperture radar (SAR) combines high-azimuth-range resolution with robust penetration capabilities, making it ideal for applications such as through-wall detection and subsurface imaging.
Xinhao Xu, Wenjie Li, Haibo Tang, Longyong Chen, Chengwei Zhang, Tao Jiang, Jie Liu, Xingdong Liang   +7 more
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A Rapid Impedance Measurement Method Based on Superposed Modulated Square Pulse

Kongzhi Yu Xinxi Jishu, 2013
A new current injection method was presented for impedance measurement to solve the problems in traditional methods, such as long measuring time and inaccuracy of high frequency.
YUE Xiaolong, ZHANG Zhenghua, SHI Hongtao, ZHANG Dong, ZHUO Fang   +4 more
doaj  

VISUALIZATION OF BIOLOGICAL TISSUE IMPEDANCE PARAMETERS

Бюллетень сибирской медицины, 2016
Objective. Investigation the opportunity for measurement of biological tissue impedance to visualize its parameters.Materials and methods. Studies were undertook on the experimental facility, consists of registrating measuring cell, constructed from flat
V. I. Bankov
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