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High frequency modeling of bearing currents and shaft voltage on electrical motors
2005 International Conference on Electrical Machines and Systems, 2005The paper proposes a general method to investigate the common mode high frequency current components flowing through electrical motors supplied by electronic converters, especially focusing on bearing currents. An innovative model is defined able to address a wide frequency range (50 kHz/3 MHz) for EMI/EMC issues.
M. Cacciato +3 more
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Fault Diagnosis on Bearings of Electric Motors by Estimating the Current Spectrum
IFAC Proceedings Volumes, 1994Abstract The current spectrum of a motor with a faulty bearing contains the rotation frequency and its higher harmonics as well as narrow sidebands produced by frequency and amplitude modulations. A physical model is developed to predict the current spectrum of an universal motor with a faulty bearing.
D. Filbert, C. Gühmann
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Influencing Parameters on Discharge Bearing Currents in Inverter-Fed Induction Motors
IEEE Transactions on Energy Conversion, 2021Thibaud Plazenet +2 more
exaly
Prediction and Measurement of Bearing Currents in an Electric Traction Drive System
2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), 2023Pauline Höltje +6 more
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Failure of a Low-Alloy Steel Bearing in an Electric Motor Because of Stray Electric Currents
2019Abstract Rough operation of the roller bearing mounted in an electric motor/gearbox assembly was observed. The bearing components made of low-alloy steel (4620 or 8620) and the cup, cone and rollers were carburized, hardened and tempered.
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Measuring Electric Contact in an Axial Ball Bearing at DC Current Flow
IEEE Transactions on Industry Applications, 2023Omid Safdarzadeh +2 more
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A Soft Switching Inverter Minimizing Bearing Currents in 800V Electric Vehicle Drives
2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2021Michael Eull, Matthias Preindl
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