Results 221 to 230 of about 8,060,774 (279)

Dynamic Mechanical Behavior and Constitutive Model of CO₂‑Exposed Coal under Three-Dimensional Stress. [PDF]

ACS Omega
Liu H, Hu H, Li R, Li X, Xie X, Chen L, Liao Z.   +6 more
europepmc   +1 more source

CORRECT-Net: A Multimodal Vibration-Current Fusion Network for Coal-Rock Cutting State Recognition in Shearers. [PDF]

Sensors (Basel)
Zhao L, Zhang Z, Wang Y, Wu T, Hao J.
europepmc   +1 more source

Application guide bearing currents [PDF]

, 2021
This application guide bearing currents is intended to provide an overview of electrical bearing current effects in rolling bearings, related to bearing damage, concerning the questions: - Which typical failures occur due to bearing currents? - What are electrical bearing currents? - How do electrical bearing currents occur?
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Induction Motor Bearing Currents - Causes and Damages

2021 28th International Workshop on Electric Drives: Improving Reliability of Electric Drives (IWED), 2021
Bearing damages make the biggest proportion of faults affecting AC electrical motors. There are various subdivisions of the bearing faults but one of them is the induced bearing and shaft currents in the machines. These currents cannot be fully avoided, yet with the development of power electronic control of the machines, the number of machines ...
Kudelina, Karolina, Vaimann, Toomas, Rassõlkin, Anton, Kallaste, Ants, Asad, Bilal, Demidova, Galina   +6 more
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The Conduction of Current in Bearings

A S L E Transactions, 1959
Presented as an American Society of Lubrication Engineers paper at the Lubrication Conference held in Los Angles, Calif., October, 1958.
H. N. Kaufman, J. Boyd
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Investigation of influence of bearing load and bearing temperature on EDM bearing currents

2010 IEEE Energy Conversion Congress and Exposition, 2010
To detect the worst case and the best case of the bearing operating conditions concerning the magnitude of the high frequency discharge bearing currents (“EDM currents”) and the frequency of electric discharges in the bearings of the small power inverter-fed AC motors, systematic investigations have been performed for three, 4-pole, 1.5 kW squirrel ...
Oliver Magdun, Yves Gemeinder, Andreas Binder   +2 more
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Bearing wear caused by converter-induced bearing currents

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society, 2010
The basic interrelationships that are required to investigate the cross-system subject of “bearing currents in converter operation”, are discussed in this paper. In order to obtain an integrated overview of the situation, it is decisive that the main points of the investigation are not discussed individually, but must be considered from an overall ...
H. Tischmacher, S. Gattermann, M. Kriese, E. Wittek   +3 more
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Bearing currents in converter operation

The XIX International Conference on Electrical Machines - ICEM 2010, 2010
The basic inter-relationships, which are required to investigate the cross-system subject of “bearing currents in converter operation”, are discussed in this paper. In order to obtain an integrated overview of the situation, it is decisive that the main points of investigation that are discussed are combined and viewed holistically.
H. Tischmacher, S. Gattermann
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On inverter induced bearing currents, bearing maintenance scheduling, and prognosis

2014 International Conference on Electrical Machines (ICEM), 2014
In this review we discuss the steps that are necessary to proceed from understanding the inception and evolution bearing faults, caused chiefly by bearing currents, and the advantages of the accurate estimation of the remaining useful life over fault detection.
A. Muetze, E. G. Strangas
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Antiforce Current Bearing Waves

2012
In the case of breakdown waves in a long discharge tube, near the electrode where the potential gradient in the gas is greatest, small quantity of gas is ionized. Analysis of the spectrum of radiation emitted from electric breakdown of a gas reveals no Doppler shift, indicating that the ions have negligible motion. The large difference in mobilities of
M. Hemmati, W. Childs, H. Shojaei, D. Waters   +3 more
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