Arrangement for suppressing high frequency currents in bearings

Details Arrangement for suppressing high frequency currents in bearings Arrangement for suppressing high frequency currents in bearings

1979-08-27

1981-05-19

Hartary, Joseph W.

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

308 1R, H03H 100

Patent

active

042687586

ABSTRACT:
In order to suppress the high-frequency currents in bearings of shafts, the bearing capacity is arranged in the configuration of an electric quadrupole in such a manner that the high frequency voltage becomes a minimum. In the case of ungrounded shafts, a further impedance is provided between the bearing housing and the housing of the treatment chamber such that the sum of this further impedance and the impedance of the shaft are great compared to the bearing impedance. Additionally, a low resistance in the form of a sliding contact is shunted across the bearing impedance. The further impedance according to one embodiment is a capacitance and in another embodiment is a parallel L-C resonant circuit which is connected in series with the bearing. The capacitance of the L-C circuit is formed by an insulating plate and the inductance by a winding.

REFERENCES:
patent: 3881137 (1975-04-01), Thanawala

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