Electric machine with encapsulated end turns

摘要

An electric machine having a rotor and a stator. The stator includes an electrically conductive wire forming a stator winding. The stator winding forms a first plurality of end turns projecting axially beyond an axial end of the stator core. Each of the wire segments forming the first plurality of end turns has a discrete electrically insulative outer layer. A heat transmissive material having a thermal conductivity of at least about 50 W·m -1 ·K -1 encapsulates the first plurality of end turns. A ceramic material may be used to provide the electrically insulative outer layer of the winding and a metallic material may be used to form the heat transmissive material encapsulating the end turns. A method of manufacture is also disclosed.