A New Manufacturing Technology for Induction Machine Copper Rotors

John S. Hsu, E. A. Franco-Ferreira, Chester L. Coomer, S. Michael Jenkins
2002 SAE Technical Paper Series   unpublished
The benefits of energy and operational cost savings from using copper rotors are well recognized. The main barrier to die casting copper rotors is short mold life. This paper introduces a new approach for manufacturing copperbar rotors. Either copper, aluminum, or their alloys can be used for the end rings. Both solid-core and laminated-core rotors were built. High quality joints of aluminum to copper were produced and evaluated. This technology can also be used for manufacturing aluminum bar
more » ... tors with aluminum end rings. Further development is needed to study the life time reliability of the joint, to optimize manufacturing fixtures, and to conduct large-rotor tests.
doi:10.4271/2002-01-1888 fatcat:evy3pvtlhnfedmayfb4kchvuju