Patent ID: 7750526

Claim:
A compensator to be used for minimizing circulatory current losses generated in a winding of a stator of an electric machine, said winding of the stator comprising sub-conductors, the compensator comprising: a frame part comprising a magnetically conductive material; a winding formed in the frame part, the winding comprising at least one conductor having at least two sub-conductors; and at least one opening in said frame part forming a closed magnetic circuit in the compensator; wherein said at least two sub-conductors of said winding of said compensator extend through said at least one opening such that a total current flowing through the opening is substantially zero when a substantially equal current is supplied to the sub-conductors of said winding of said compensator; wherein at least two different sub-conductors extend through at least one opening; and wherein a number of sub-conductors of the compensator is equal to a number of sub-conductors of the winding of the stator.