Results 11 to 20 of about 29,705,142 (291)

Damping System Designs using Nonlinear Frequency Analysis Approach [PDF]

open access: yes, 2012
The main purpose of this thesis focuses on the investigation of the frequency domain analysis and design approaches for nonlinear damping systems. With the development of modern mechanical and civil engineering structures, the vibration control has ...
Guo, Pengfei
core   +6 more sources

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

open access: yes, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Jorge Ramirez   +3 more
core   +3 more sources

Application of Frequency Response Analysis Method to Detect Short-Circuit Faults in Three-Phase Induction Motors

open access: yesApplied Sciences, 2022
The industry has widely accepted Frequency Response Analysis (FRA) as a reliable method to detect power transformers mechanical deformations. While the FRA technique has been recommended in recent literature as a potential diagnostic method to detect ...
Salem Mgammal Al-Ameri   +6 more
doaj   +1 more source

Fault Diagnosis of Transformer Windings Based on Decision Tree and Fully Connected Neural Network

open access: yesEnergies, 2021
While frequency response analysis (FRA) is a well matured technique widely used by current industry practice to detect the mechanical integrity of power transformers, interpretation of FRA signatures is still challenging, regardless of the research ...
ZhenHua Li   +7 more
doaj   +1 more source

Create Models from Frequency Response Analysis

open access: yes, 2022
This tutorial shows how to convert the data from the Multitone Analysis in PLECS (or other frequency response measurements) to a transfer function, a parametric model.
Michael Hubatka
core   +1 more source

Temperature Estimation of SiC Power Devices Using High Frequency Chirp Signals

open access: yesEnergies, 2021
Silicon carbide devices have become increasingly popular in electric vehicles, predominantly due to their fast-switching speeds, which allow for the construction of smaller power converters. Temperature sensitive electrical parameters (TSEPs) can be used
Xiang Lu   +5 more
doaj   +1 more source

Cross Test Comparison in Transformer Windings Frequency Response Analysis

open access: yesEnergies, 2018
Frequency Response Analysis (FRA) is an important tool used for diagnostic measurements of power transformers. Standard test configuration applied in the industry is the end-to-end open test setup; however, an interwinding capacitive configuration is ...
Szymon Banaszak, Wojciech Szoka
doaj   +1 more source

FEM Modelling of the Influence of the Remaining Windings on the Frequency Response of the Power Transformer

open access: yesApplied Sciences, 2020
One of the standard diagnostic methods for power transformers is frequency response analysis (FRA). This paper deals with progress in the frequency response interpretation of these very important appliances in the power network.
Katarzyna Trela   +1 more
doaj   +1 more source

Vibration Isolation of a Surveillance System Equipped in a Drone with Mode Decoupling

open access: yesApplied Sciences, 2021
Vibration isolation with mode decoupling plays a crucial role in the design of an intelligent robotic system. Specifically, a coupled multi-degree-of-freedom (multi-DOF) model accurately predicts responses of system dynamics; hence, it is useful for ...
Yun-Ho Shin   +4 more
doaj   +1 more source

Generation of Anisotropic Cloud Cover

open access: yesMìkrosistemi, Elektronìka ta Akustika, 2023
This paper introduces an advanced mathematical model for generating and analyzing cloud cover images, specifically designed to enhance photovoltaic (PV) partial shading studies.
Vadym Ihorovych Martyniuk   +1 more
doaj   +1 more source

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