Results 31 to 40 of about 22,339,861 (301)

Study on resonance characteristic of continuous co‐phase traction power supply system

open access: yesIET Generation, Transmission & Distribution, 2023
In order to solve the power quality problems and eliminate the neutral sections in the railway, the implementation of the continuous co‐phase traction power supply system (CCTPSS) is the development trend of the future. However, various parameters of the
Fan Zhong, Shaofeng Xie
doaj   +1 more source

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

open access: yesTehnički Glasnik, 2023
In this paper, the dynamic behavior of a rotor kit with two identical disks located between the plain bearings was analyzed. Modal and harmonic analysis of this rotor kit configuration were performed in the Ansys software package.
Marko Katinić   +3 more
doaj   +1 more source

Harmonic analysis

open access: yes2004 IEEE Electro/Information Technology Conference, 2004
This paper describes a method of calculating the transforms, currently obtained via Fourier and reverse Fourier transforms. The method allows calculating efficiently the transforms of a signal having an arbitrary dimension of the digital representation by reducing the transform to a vector-to-circulant matrix multiplying.
openaire   +2 more sources

ON THE CONVERGENCE OF THE EULER HARMONIC SERIES [PDF]

open access: yes, 2000
The aim oj this article is to study the convergence oj the Euler harmonic series. Firstly, the results concerning the convergence oj the Smaralldache and Erdos harmonic junctions are reviewed Secondly, the Euler harmonic series is proved to be convergent
Tabirca, Tatiana, Tabirca, Sabin
core   +1 more source

Spatiotemporal phase-matching in capillary high-harmonic generation [PDF]

open access: yes, 2012
We present a simple phase-matching model that takes into account the full spatiotemporal nature of capillary high-harmonic generation. Spectra predicted from the model are compared to experimental results for a number of gases and are shown to reproduce ...
Rogers, Edward T.F.   +22 more
core   +1 more source

PQ and Harmonic Assessment Issues on Low-Cost Smart Metering Platforms: A Case Study

open access: yesSensors, 2020
This paper presents a feasibility study on how to implement power quality (PQ) metrics in a low-cost smart metering platform. The study is aimed at verifying the possibility of implementing PQ monitoring in distribution networks without replacing ...
Giovanni Artale   +9 more
doaj   +1 more source

Power Quality Issues and Mitigation for Electric Grids with Wind Power Penetration

open access: yesApplied Sciences, 2020
Large penetration of wind energy systems into electric-grids results in many power quality problems. This paper presents a classification of power quality issues, namely harmonics and short-duration voltage variation observed due to the integration of ...
Sulaiman A. Almohaimeed   +1 more
doaj   +1 more source

Numerical Algorithm for Dynamic Impedance of Bridge Pile-Group Foundation and Its Validation

open access: yesAlgorithms, 2021
The characteristics of bridge pile-group foundation have a significant influence on the dynamic performance of the superstructure. Most of the existing analysis methods for the pile-group foundation impedance take the trait of strong specialty, which ...
Chenyu Wang   +3 more
doaj   +1 more source

Quantifying the Response of German Forests to Drought Events via Satellite Imagery

open access: yesRemote Sensing, 2021
Forest systems provide crucial ecosystem functions to our environment, such as balancing carbon stocks and influencing the local, regional and global climate.
Marius Philipp   +2 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

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