Results 161 to 170 of about 350,104 (214)
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Sweep Frequency Response Analysis Applications on Stator Windings of Rotating Machines
2021Um Ausfälle rotierender Maschinen zu vermeiden, ist die frühe Diagnose vom Abweichen des Normalzustandes von essentieller Bedeutung. Hierfür sind nichtinvasive diagnostische Tests das bevorzugte Instrument, besonders wenn sie schnell, einfach und hochpräzise sind.
M. Mayer
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IEEE Transactions on Power Delivery, 2022
As inter-turn faults in transformer windings are the most severe, their delayed detection and localization may create extensive damage to the winding. Therefore, a new inter-turn fault localization methodology based on sweep frequency response analysis (SFRA) through calculation of Pre-fault Inter-Turn Fault Factor (ITFFpre) for all possible fault ...
Abhishek Kumar +2 more
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As inter-turn faults in transformer windings are the most severe, their delayed detection and localization may create extensive damage to the winding. Therefore, a new inter-turn fault localization methodology based on sweep frequency response analysis (SFRA) through calculation of Pre-fault Inter-Turn Fault Factor (ITFFpre) for all possible fault ...
Abhishek Kumar +2 more
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IEEE Transactions on Industrial Electronics, 2023
In this article, analytical methods are proposed for the location of a short circuit fault in a power cable using sweep frequency response analysis (SFRA).
Aritra Das, Chakradhar C. Reddy
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In this article, analytical methods are proposed for the location of a short circuit fault in a power cable using sweep frequency response analysis (SFRA).
Aritra Das, Chakradhar C. Reddy
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Identifying Internal Defects of Photovoltaic Panels Using Sweep Frequency Response Analysis
2019 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2019 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2019Solar irradiation is the main energy source which can sustainably provide all of energy needs on the earth. Because of fast progress in direct conversion of solar energy to electricity, photovoltaic (PV) converters are going to become major devices to supply world energy requirements.
Kazem Pourhossein, Meysam Asadi
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Modelling Transfer Function of Power Transformers Using Sweep Frequency Response Analysis
2018 Moratuwa Engineering Research Conference (MERCon), 2018Sweep Frequency response analysis is a widely used condition monitoring technique of power transformers that includes interpreting transfer function in frequency domain. This paper presents a novel approach to model the transfer function numerically in laplace domain. Derivation of transfer function involves complex mathematical calculations as it is a
K. L. I. M. Pramod B. Jayarathna +3 more
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Rotor Winding Diagnosis Using Sweep Frequency Response Analysis and Comparison to RSO
2024 International Conference on Diagnostics in Electrical Engineering (Diagnostika)Rotor windings of rotating machines are prone to high mechanical forces especially in high-speed machines and therefore often reason of unexpected failures.
Pascal Froehlich, Fabian Oettl
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Investigation of transformer model winding deformation using sweep frequency response analysis
IEEE Transactions on Dielectrics and Electrical Insulation, 2012This article describes an investigation of the transformer inner winding deformation, using Sweep Frequency Response Analysis (SFRA). The object of the investigation is a transformer model with functionality of disassembling inner winding and changing configuration of its parts.
K. Ludwikowski, K. Siodla, W. Ziomek
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2022 9th International Conference on Condition Monitoring and Diagnosis (CMD), 2022
The on-line partial discharge monitoring system has become a significant tool for protecting high voltage motors' stator winding from incipient failure.
Yong Joo Kim, Se Hoon Yang, Hyun Bin Jo
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The on-line partial discharge monitoring system has become a significant tool for protecting high voltage motors' stator winding from incipient failure.
Yong Joo Kim, Se Hoon Yang, Hyun Bin Jo
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Study on locating transformer internal faults using sweep frequency response analysis
Electric Power Systems Research, 2017Abstract As an extensive network of resistances, capacitances, and inductances, a transformer has inherent characteristic parameters that are functions of frequency. The form of these functions is predicated on the geometric design of the transformer and materials that comprise it. Any change in the structure of a transformer will be reflected in its
Mahdi Khanali +3 more
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2017 IEEE International Conference on Electrical, Instrumentation and Communication Engineering (ICEICE), 2017
Sweep Frequency Response Analysis (SFRA) is a demonstrated control for investigating the mechanical integrity such as core and bulk winding deformations, open circuit and short circuit, radial and axial buckling etc. A change in frequency response as measured by SFRA technique indicates a good graphical interpretation can give the exact location of ...
Priti Gite, A. S. Sindekar
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Sweep Frequency Response Analysis (SFRA) is a demonstrated control for investigating the mechanical integrity such as core and bulk winding deformations, open circuit and short circuit, radial and axial buckling etc. A change in frequency response as measured by SFRA technique indicates a good graphical interpretation can give the exact location of ...
Priti Gite, A. S. Sindekar
openaire +2 more sources