Patent ID: 6756712
Filing Date: 2004-06-29
Classification: H02K

Abstract:
A three phase converter fed motor, comprising:a shall mounted in bearings; a stator having a laminated core, a winding and a plurality of slots, the winding having a current fed side, the stator being operatively connectable to a three phase-current via the winding; a shield comprising an electrically conductive layer, the shield being operatively arranged between the current fed side of the winding and the laminated core so as to shield each slot, the shield being conductively connected to one of a ground and the laminated core in a predetermined manner so as to reduce amplitudes of capacitive currents circulating in the stator and bearings and thereby prevent damage to the bearings, said predetermined manner comprising said conductive connection of the shield being only on the current fed side of the winding; first insulating means operatively arranged between the shield and the winding for insulating the shield from the winding; and second insulating means operatively arranged between the shield and the laminated core for insulating the shield from the laminated core.