Induction motors including vent spacers, rotor core assemblies including vent spacers, and methods of operating same

摘要

Vent spacers and induction motor rotor core assemblies for induction motors are disclosed. The induction motor rotor assembly includes at least two rotor packages, each having axial sidewalls, a radial periphery, and axial vents, and a vent spacer positioned between opposing axial sidewalls of the at least two rotor packages. The vent spacer has a hub and a plurality of radially-extending fins coupled to the hub, the fins extending approximately to a radial periphery and extending axially between the opposed axial sidewalls to form a plurality of radial cooling channels extending between the sidewalls. Induction motors and methods of operating the induction motors are disclosed, as are other aspects.