DEVICE FOR PROTECTION OF THE BEARING OF AN ELECTRICAL MACHINE AGAINST DAMAGING PASSAGE OF CURRENT

摘要

A device for protection of the bearing of an electrical machine against damaging passage of current has a stator and a rotor which is pivotally mounted by means of a bearing relative to the stator. There is a compensation circuit for producing a compensation current for the compensation of a parasitic current which forms during operation of the electrical machine by the bearing and there is a coupling element for direct or indirect coupling of the compensation current into the bearing.