Results 1 to 10 of about 19,374 (297)
Influencing Factors on the Fluting in an Axial Ball Bearing at DC Bearing Currents
Lubricants, 2023 The effect of variable DC bearing current amplitude, bearing current polarity, mechanical force, rotation speed, bearing temperature, and number of the balls on the fluting in an axial ball bearing type 51208 is investigated under DC currents.
Omid Safdarzadeh +4 more
doaj +5 more sources
The Influence of Lubricant Conductivity on Bearing Currents in the Case of Rolling Bearing Greases [PDF]
Lubricants, 2019 In the course of increasing electric mobility, the effect of electricity on parts of machines is more significant than before. Rolling bearings and their lubrication, as a part of electric motors, are subjected to harmful currents, which lead to damage in the bearing in the long term. In order to avoid such damage, the influence of the lubricant in the
Bernd Sauer, Sauer Bernd
exaly +3 more sources
Modelling of the Bearing Breakdown Resistance in Bearing Currents Problem of AC Motors
Energies, 2019 With the wide application of pulse width modulation (PWM) technology in motor driving, the bearing current problem has become more and more severe. The most complicated problem in analyzing bearing currents is modeling the equivalent circuit of the ...
Xuejiao Ren, Ruifang Liu, Erle Yang
doaj +3 more sources
Motor Bearing Damage Induced by Bearing Current: A Review
Machines, 2022 The occurrence of the motor shaft voltage and bearing current caused by the inverter will aggravate bearing damage and lead to the premature failure of bearings.
Jiaojiao Ma +4 more
doaj +2 more sources
Machines, 2023 Pulse–width modulated inverters are commonly used to control electrical drives, generating a common mode voltage and current with high–frequency components that excite the parasitic capacitances within electric machines, such as permanent magnet ...
Yusa Tombul +2 more
doaj +3 more sources
IEEE Access, 2021 Compared with silicon (Si) IGBTs, silicon carbide (SiC) MOSFETs have much faster switching speeds and high switching frequency operation capability, enabling compact and high-efficiency motor drive systems.
Yipu Xu +4 more
doaj +1 more source
Method of Limiting Shaft Voltages in AC Electric Machines
Energies, 2021 The article presents a new method of counteracting shaft voltages and currents in AC electrical machines. It is based on the use of an auxiliary winding located in the stator of the machine.
Sebastian Berhausen, Tomasz Jarek
doaj +1 more source
Lubricants, 2023 Within this paper, electro-mechanical long-term tests on a thrust bearing were presented. The effects of an additional electrical load on the bearing raceways and the used lubricant were investigated.
Simon Graf, Oliver Koch, Bernd Sauer
doaj +1 more source
IEEE Access, 2021 The emergence of fast-switching wide-bandgap (GaN, SiC) power electronics devices has enabled motor drive systems to achieve high efficiency, power density, control bandwidth and high-level of integration.
Yipu Xu +6 more
doaj +1 more source
IEEE Access, 2022 The converter switching in variable-frequency drives can generate high frequency common mode voltage between the machine winding and the converter ground, leading to high frequency parasitic currents which can flow through the machine bearings unless ...
Wenjun Zhu +4 more
doaj +1 more source