Results 1 to 10 of about 4,488,266 (309)
Fluid Degradation Measurement Based on a Dual Coil Frequency Response Analysis [PDF]
Sensors, 2020 Electrical industry uses oils for cooling and insulation of several machines, such as power transformers. In addition, it uses water for cooling some synchronous generators. To avoid malfunctions in these assets, fluid quality should be preserved.
Jose M. Guerrero +3 more
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Online Frequency Response Analysis of Electric Machinery through an Active Coupling System Based on Power Electronics [PDF]
Sensors, 2021 This paper presents an innovative concept for the online application of Frequency Response Analysis (FRA). FRA is a well known technique that is applied to detect damage in electric machinery.
Wilson Cesar Sant’Ana +9 more
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Detection of Failures in Metal Oxide Surge Arresters Using Frequency Response Analysis [PDF]
Sensors, 2023 This work presents an innovative application of Frequency Response Analysis (FRA) in order to detect early degradation of Metal Oxide Surge Arresters (MOSAs). This technique has been widely used in power transformers, but has never been applied to MOSAs.
Tiago Goncalves Zacarias +9 more
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Frequency Response Analysis of Buck-Boost Inverter
Mìkrosistemi, Elektronìka ta Akustika, 2019 The paper deals with processes analysis in inverter circuits. These processes are described by differential equations with periodical coefficients. Since control signals and voltages operating in an inverter circuit are independent theirs frequencies are
Igor Yevheniiovych Korotyeyev
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Journal of Marine Science and Engineering, 2022 In this study, we propose effective formulations for modal, frequency response, and transient analyses using condensed matrices of the finite element (FE) model.
Do-Hyun Ko, Seung-Hwan Boo
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Applied Sciences, 2022 A fast vibration reduction optimization approach accelerated by the global proper orthogonal decomposition (POD) reduced-order model (ROM) is proposed, aiming at increasing the efficiency of frequency response analysis and vibration reduction ...
Yongxin Shi +5 more
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Applied Sciences, 2021 This paper presents an empirical modeling of a 2-Degree-of-Freedom (DoF) azimuth thruster using the signal compression method. The thruster has a gimbal mechanism with two servo motors and generates thrust in arbitrary directions.
Cheol-Su Jeong +3 more
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Applied Sciences, 2021 Nonlinear factors such as the contact stiffness and friction damping at the threaded interface of a projectile–fuse system significantly affect the dynamic response characteristics.
A’min Yan +4 more
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Interpretation of Frequency Response Analysis for Fault Detection in Power Transformers
Applied Sciences, 2021 Frequency response analysis (FRA) is a method of monitoring a power transformer’s mechanical integrity. However, identifying the type of fault and its severity by comparing measured responses is still challenging and mostly relies on personnel expertise.
Salem Mgammal Al-Ameri +5 more
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Sensors, 2021 The wear comfort of a prosthesis is of great importance for amputee patients. The wear comfort can be affected by changes in the interface between the residual limb and prosthesis socket, which can be caused by time-dependent volume fluctuations of the ...
Constanze Neupetsch +5 more
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