High intertia stamped rotor can

摘要

An outer rotor motor or generator is provided. The motor or generator includes a stator and a rotor rotatable about an axis. The rotor includes a stamped rotor can and an inertia ring. The stamped rotor can includes a generally radially extending base and a generally axially extending sidewall extending from the base to present radially innermost and radially outermost faces. The inertia ring at least in part overlies at least one of the radially innermost and radially outermost faces. The inertia ring is fixed to the rotor can to rotate therewith. The inertia ring is configured to increase the rotational inertia of the rotor about the axis.