Results 1 to 10 of about 29,083 (117)

Machine Learning Based Method for Impedance Estimation and Unbalance Supply Voltage Detection in Induction Motors [PDF]

open access: yesSensors, 2023
Induction motors (IMs) are widely used in industrial applications due to their advantages over other motor types. However, the efficiency and lifespan of IMs can be significantly impacted by operating conditions, especially Unbalanced Supply Voltages ...
Khaled Laadjal   +3 more
doaj   +2 more sources

Study on Harmonic Impedance Estimation and Harmonic Contribution Evaluation Index

open access: yesIEEE Access, 2020
Harmonic impedance estimation and suitable evaluation index selection are the key steps of harmonic contribution evaluation. Most of the traditional harmonic impedance estimation methods are only applicable to the scenario, where the background harmonic ...
Ziteng Liu   +3 more
doaj   +3 more sources

Review of Local Network Impedance Estimation Techniques

open access: yesIEEE Access, 2020
As a result of increasing variability of network impedance, interest in impedance estimation techniques is growing. This review contextualises local impedance estimation techniques by providing a historical prospective on the uses of these techniques ...
Mathieu Kervyn De Meerendre   +5 more
doaj   +3 more sources

Power Distribution System Characterization With Active Probing: Real-World Testing and Analysis

open access: yesIEEE Open Access Journal of Power and Energy, 2023
Power distribution systems are traditionally characterized using passive means such as parameter estimation and topology identification. This work investigates an active way to test and characterize dynamically changing distribution systems.
Can Huang   +3 more
doaj   +1 more source

Novel Method for Estimating Utility Harmonic Impedance for a Direct-Drive Permanent Magnet Synchronous Generator Wind Farm

open access: yesIEEE Access, 2022
Accurate estimation of the utility harmonic impedance is significant for harmonic control and responsibility division. Traditional methods of estimating the utility harmonic impedance are valid on the premise that the harmonic impedance on the wind-farm ...
Runze Zhou   +4 more
doaj   +1 more source

Virtual Stiffness: A Novel Biomechanical Approach to Estimate Limb Stiffness of a Multi-Muscle and Multi-Joint System

open access: yesSensors, 2023
In recent years, different groups have developed algorithms to control the stiffness of a robotic device through the electromyographic activity collected from a human operator.
Daniele Borzelli   +3 more
doaj   +1 more source

An Effective Acoustic Impedance Imaging Based on a Broadband Gaussian Beam Migration

open access: yesEnergies, 2021
The estimation of the subsurface acoustic impedance (AI) model is an important step of seismic data processing for oil and gas exploration. The full waveform inversion (FWI) is a powerful way to invert the subsurface parameters with surface acquired ...
Shaoyong Liu   +4 more
doaj   +1 more source

Improve the quality of "dead band" audio-frequency magnetotelluric impedance data using electric field remote reference

open access: yes矿业科学学报, 2022
Magnetic remote-reference is the most practical noise suppression method in magnetotelluric data processing.In actual audio-frequency magnetotelluric (AMT) sounding observation, usually the "one with three" or "one with four" acquisition method is used ...
Ma Fangyuan   +5 more
doaj   +1 more source

A novel fault monitoring method based on impedance estimation of power line communication equipment

open access: yesFrontiers in Energy Research, 2023
Due to the close relationship between power grid fault and impedance, there is a significant defect in the use of power line communication (PLC) equipment to monitor and locate power grid faults, which is the lack of real-time impedance information ...
Dong Liang   +4 more
doaj   +1 more source

Direction-of-arrival estimation with blind surface impedance compensation for spherical microphone array [PDF]

open access: yesJASA Express Letters, 2021
The direction-of-arrival (DoA) estimation from spherical microphone array data requires mode strength compensation for removing the dependency on the array surface impedance.
Dongheon Lee, Byeongho Jo, Jung-Woo Choi
doaj   +1 more source

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