ELECTRIC MACHINE WITH AIR COOLING SYSTEM

摘要

An electric machine comprising a stator having a stator winding, a housin g accommodating the stator, a rotor, and an air gap having a generally cylin drical configuration. A plurality of circumferentially distributed, radial, first cooling gas ducts are provided in a stator core. Jets of cooling gas a re directed to regions of an end winding which are relatively distant from t he stator core, in order to achieve impingement cooling thereof. Flows of co oling gas are directed to portions of the end winding which are between the impingement cooled regions of the end winding and the respective front face of the stator core.