Results 1 to 10 of about 166,308 (257)

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, Yujian Xue, Qingkai Han, Xuejun Li, Changxin Yu   +4 more
doaj   +2 more sources

Suppression of Rotor-Grounding Bearing Currents Based on Matching Stator and Rotor Grounding Impedances [PDF]

Energies, 2022
Pulse-width modulation (PWM) inverter drive systems are widely applied in industry for their great speed-control characteristics and performance. However, the common-mode voltage of the inverter induces motor bearing voltage and bearing current, which ...
Lei Yang, Ying Yang, Junfu Wen, Lei Jia, Erle Yang, Ruifang Liu   +5 more
doaj   +2 more sources

Bidirectional Current WP and CBAR Neural Network Model-Based Bearing Fault Diagnosis [PDF]

IEEE Access, 2023
In the era of artificial intelligence, the development of an efficient bearing, fault diagnosis method is of vital importance to ensure smooth production operations and avoid major economic losses.
Jianguang Zhu, Tang Liu
doaj   +2 more sources

Influence of Electric Discharges on Bearings of Electric Machina [PDF]

Advances in Electrical and Electronic Engineering, 2008
Bearing currents are one of cause’s bearings faults. The character of a lubricator belongs to main factor influencing an inception of bearing currents. We have analyzed the electric character variety kind of lubricators; the influence of lubricators on a
Jiri Foldyna, Karel Chmelik, Stanislav Misak   +2 more
doaj   +4 more sources

Effect of Harmful Bearing Currents on the Service Life of Rolling Bearings: From Experimental Investigations to a Predictive Model

Lubricants
This study investigates the effects of harmful bearing currents on the service life of rolling bearings and introduces a model to predict service life as a function of surface roughness. Harmful bearing currents, resulting from electrical discharges, can
Volker Schneider, Marius Krewer, Gerhard Poll, Max Marian   +3 more
doaj   +2 more sources

Crystallization from a Current-Bearing Electrolyte [PDF]

Physical Review (Series I), 1902
Paul R. Heyl
openaire   +2 more sources

Wave Profile for Current Bearing Antiforce Waves

Journal of the Arkansas Academy of Science, 2013
For fluid dynamical analysis of breakdown waves, we employ a one-dimensional, three-component (electrons, ions and neutral particles) fluid model to describe a steady-state, ionizing wave propagating counter to strong electric fields. The electron gas temperature and therefore the electron fluid pressure is assumed to be large enough to sustain the ...
Morris, H., Childs, W., Pinkston, P., Hemmati, M., Christensen, J.   +4 more
openaire   +4 more sources

Experimental Assessment of High Frequency Bearing Currents in an Induction Motor Driven by a SiC Inverter

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, Yan Liang, Xibo Yuan, Xiaojie Wu, Yan Li   +4 more
doaj   +1 more source

Simulation of the Circulating Bearing Currents for Different Stator Designs of Electric Traction Machines

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, Philipp Tillmann, Jakob Andert   +2 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