LOW LOSSES DAMPER BAR FOR ELECTRIC MACHINES
Abstract:
In an example, a rotor for an electric machine includes a cylindrical central portion, and a plurality of poles extending from the cylindrical central portion in a radial direction. Each pole of the plurality of poles includes a top surface that includes one or more slots that are located in and extend across the top surface. The rotor further includes a plurality of stranded wire damper windings, wherein each stranded wire damper winding of the plurality of stranded wire damper windings includes two or more conductor wires twisted together and insulated from each other. The two or more conductor wires are twisted together five or more times, and each respective stranded wire damper winding of the plurality of stranded wire damper windings is positioned within a respective slot of the one or more slots of a respective pole of the plurality of poles.
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