Results 61 to 70 of about 703,957 (311)

Machine-side Harmonic Suppression Strategy for Direct Driven Five-phase PMSG of Wind Power Generation System

open access: yesAdvances in Electrical and Computer Engineering
Wind power generation system with five-phase PMSG contains a large amount of third harmonic in the stator phase current of the machine side due to the dead-time effect of the converter and non-sinusoidal air-gap magnetic field.
JIANG, Z., ZHANG, J.
doaj   +1 more source

Current Controller with FOPI Modification for VSI-based Active Power Filter

open access: yesEmitor: Jurnal Teknik Elektro
The integration of photovoltaic (PV) systems into the grid, combined with nonlinear loads and bidirectional power flows, significantly impacts grid voltage stability and total harmonic distortion (THD) in low-voltage distribution systems.
Antonius Doddy Tyas Prasetyo   +2 more
doaj   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

open access: yesFEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso   +4 more
wiley   +1 more source

FRACTIONAL WINDINGS HARMONIC ANALYSIS

open access: yesElectrical engineering & Electromechanics, 2013
Investigation results for multiphase windings of a united variety that includes windings with fractional and integer number of slots per pole and phase are given.
W.G. Degtev
doaj  

The Physical Significance and Applications of F_TIDE in Nonstationary Tidal Analysis

open access: yesJournal of Marine Science and Engineering
F_TIDE has been proven to be effective in obtaining the time-varying harmonic parameters of nonstationary tidal signals, and the results near the two endpoints of the analyzed time series are more accurate than those obtained by S_TIDE, which provides ...
Shengyi Jiao   +4 more
doaj   +1 more source

Modelling and analysis of LCC‐HVDC converter station for harmonic coupling of AC/DC power grid during geomagnetic storm

open access: yesIET Power Electronics, 2023
In this paper, the problem of harmonic coupling between the converter transformer and the converter under the action of geomagnetically induced current (GIC) is proposed to be investigated.
Yang Peihong   +6 more
doaj   +1 more source

Shock and harmonic response analysis of UAV nose landing gear system with air damper [PDF]

open access: gold, 2021
Lovely Son   +4 more
openalex   +1 more source

Thermodynamics of the Harmonic Oscillator: Wien's Displacement Law and the Planck Spectrum

open access: yes, 2002
A thermodynamic analysis of the harmonic oscillator is presented. Motivation for the study is provided by the blackbody radiation spectrum; when blackbody radiation is regarded as a system of noninteracting harmonic oscillator modes, the thermodynamics ...
Boyer, Timothy H.
core   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

open access: yesFEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj   +3 more
wiley   +1 more source

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