A Review of Modeling and Mitigation Techniques for Bearing Currents in Electrical Machines With Variable-Frequency Drives
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DOI: 10.1109/access.2022.3225119
Abstract: 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… read more here.
Keywords: bearing currents; frequency; frequency drives; variable frequency ... See more keywords
Influencing Parameters on Discharge Bearing Currents in Inverter-Fed Induction Motors
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DOI: 10.1109/tec.2020.3018630
Abstract: This article investigates discharge bearing currents in inverter-fed electric motors. Industrial reports indicate that among prevalent bearing failures, bearing currents are one of the influent drivers leading to a variety of tribological issues and premature… read more here.
Keywords: bearing voltage; bearing currents; inverter fed; currents inverter ... See more keywords
On the Application of Extended Grounded Slot Electrodes to Reduce Noncirculating Bearing Currents
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DOI: 10.1109/tie.2022.3172748
Abstract: Power-electronic-converter-induced motor bearing currents are a widespread problem in the field of electrical drives. Parasitic capacitances between the electrical machine's parts provide a path for leakage currents, which finally harm metallic ball bearings. Remembering that… read more here.
Keywords: extended grounded; bearing currents; grounded slot; application extended ... See more keywords