presman

What causes bearing currents in electrical machines?

I am really curious about this formation

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wilbur

Current flow in the bearings of electrical machines, because of electromagnetic unbalance in the machine or from using high dv dt inverters. The latter is able to charge up the stray capacitance present between the stator and rotor and between the rotor and shaft and thus allows motor bearing currents to flow, with resulting bearing damage.

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agrata

Electric motors are used in many applications such as industrial fans, power tools, blowers and pumps, household appliances, machine tools, and disk drives. They may be use direct current or alternating current.

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