Bearing currents - Open Access .click

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Influence of bearing currents on the bearing lifetime for converter driven machines

2012 XXth International Conference on Electrical Machines, 2012
The possibility to calculate motor bearing currents from motor geometry and the mechanisms that lead to these currents are known today [1], [2]. The precise mechanical and electrical procedures which lead to the well known corrugated patterns, a “mountain/valley” structure in the bearing raceway, which reduces the bearing lifetime, are still unknown ...
M. Kriese +5 more
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Minimizing Electric Bearing Currents in ASD Systems

IEEE Industry Applications Magazine, 1999
During recent years, an increase in bearing failures has been seen in ASD-fed electric motors, as well as in gearboxes, and other connected machinery, caused by electric current flow through such bearings. The theories presented in this paper focus on bearing currents in ASDs of the voltage source pulse width modulated (PWM) type, for use with AC ...
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Experimental Investigation of an Eddy-Current Bearing

1989
An AC-electromagnetic bearing based on eddy-current repulsion has been built and tested. The bearing was found to be inherently stable and able to provide support in five degrees of freedom, i.e. a short rotor was fully supported by a single bearing without any feedback control. However, with the current design configuration, the load carrying capacity
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``Constant Current'' Magnetic Bearing

Review of Scientific Instruments, 1971
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Long-range nontopological edge currents in charge-neutral graphene

Nature, 2021
Amit Aharon, Arthur Marguerite, Kousik Bagani +2 more
exaly

Time-domain observation of ballistic orbital-angular-momentum currents with giant relaxation length in tungsten

Nature Nanotechnology, 2023
Tom Seifert, Dongwook Go
exaly

Bearing Currents in Induction Motor Drives