Results 31 to 40 of about 1,002,790 (325)
A 300-800MHz Tunable Filter and Linearized LNA applied in a Low-Noise Harmonic-Rejection RF-Sampling Receiver [PDF]
, 2010 A multiband flexible RF-sampling receiver aimed at software-defined radio is presented. The wideband RF sampling function is enabled by a recently proposed discrete-time mixing downconverter. This work exploits a voltage-sensing LNA preceded by a tunable
Klumperink, Eric A.M. +3 more
core +3 more sources
Atopic Dermatitis Nomenclature Variants Can Impede Harmonization [PDF]
Journal of Investigative Dermatology, 2012 Abbreviations: AD, atopic dermatitis; sIgE, specific IgE; WAO, World Allergy ...
openaire +2 more sources
, 2020 In this study, a new method for utility harmonic impedance measurement based on robust independent component analysis (RICA) and bootstrap check is proposed.
Fei-Yu Chen +4 more
semanticscholar +1 more source
Online Estimation of Cable Harmonic Impedance in Low-Voltage Distribution Systems
IEEE Transactions on Instrumentation and Measurement, 2020 Incorrect values of cable harmonic impedance can lead to wrong conclusions when assessing an impact of current distortion on the power network. A theoretical derivation of resistance and reactance for harmonic frequencies is not sufficient as it neglects
S. Babaev +3 more
semanticscholar +1 more source
The effect of inrush transients on pv inverter's grid impedance measurement based on inter-harmonic injection [PDF]
, 2010 This paper addresses a cause for false tripping of photovoltaic inverters with antiislanding protection based on impedance measurement with inter-harmonic injection. Earlier discussions about tripping problems happening when several devices are doing the
Bhattacharyya, S. +5 more
core +4 more sources
Dynamic Impedance Estimation: Challenges and Considerations
Applied Sciences, 2021 The objective of this paper was to examine the dynamic impedance estimation of electrical systems from online measurements. The paper makes several considerations and highlights the challenges to obtain a precise estimation.
Mateus M. de Oliveira +6 more
doaj +1 more source
Optimal sizing of C-type passive filters under non-sinusoidal conditions [PDF]
, 2014 In the literature, much attention has been focused on power system harmonics. One of its important effects is degradation of the load power factor. In this article, a C-type filter is used for reducing harmonic distortion, improving system performance ...
Dugan R. C. +4 more
core +2 more sources
IEEE Access, 2019 With the development of electrified railway, harmonic resonance accidents occur from time to time. Based on the mechanism of resonance, a harmonic resonance suppression radical method by impedance reshaping is proposed.
Shihui Liu +4 more
doaj +1 more source
IEEE Access, 2021 The brushless doubly fed machine (BDFM) drive system based on a fractional unidirectional converter is a promising low-cost variable-speed drive system, which shows great potential in applications of driving fans and pumps.
Zhenping Li +3 more
doaj +1 more source
Study of resonances in 1 x 25 kV AC traction systems with external balancing equipment [PDF]
, 2016 © 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Mesbahi, Nadhir +2 more
core +2 more sources