The control of eddy-current losses in airgap-wound D.C. traction motors (TM-ES-058)

Three classes of eddy current loss in airgap wound dc traction motors have been identified: Eddy current loss in the copper strands forming the conductors, losses due to currents circulating between strands, and eddy current lost within the steel wire banding. The banding loss can be almost eliminated by suitable...