A stator of an electrical generator, comprising: a stator core including a winding and a plurality of stacked stator laminations and at least one end turn of said winding; a plurality of cooling passages providing a fluid flow path through a portion of the plurality of stator laminations to the at least one end turn, the cooling passages including at least one radial channel arranged in fluid communication with an axial channel, wherein the cooling passages are formed directly into the portion of the plurality of stator laminations and further comprising: a housing and a main sleeve mounted about an inner periphery of the stator, wherein the housing and the main sleeve define an enclosed cavity which is fluidly isolated from the rotor, and characterized in that each of the cooling passages 2. includes a plurality of radial channels in fluid communication with the axial channel, and wherein the radial channels are spaced about a length of the axial channel, with at least one radial channel being located at a center if the stator core; and a stator end sleeve is located between an outer diameter of the plurality of stator laminations and the housing, wherein each cooling passage includes an opening formed in the stator end sleeve for communicating a cooling fluid to the radial channels. a stator core including a winding and a plurality of stacked stator laminations and at least one end turn of said winding; a plurality of cooling passages providing a fluid flow path through a portion of the plurality of stator laminations to the at least one end turn, the cooling passages including at least one radial channel arranged in fluid communication with an axial channel, wherein the cooling passages are formed directly into the portion of the plurality of stator laminations and further comprising: a housing and a main sleeve mounted about an inner periphery of the stator, wherein the housing and the main sleeve define an enclosed cavity which is fluidly isolated from the rotor, and characterized in that each of the cooling passages 2. includes a plurality of radial channels in fluid communication with the axial channel, and wherein the radial channels are spaced about a length of the axial channel, with at least one radial channel being located at a center if the stator core; and a stator end sleeve is located between an outer diameter of the plurality of stator laminations and the housing, wherein each cooling passage includes an opening formed in the stator end sleeve for communicating a cooling fluid to the radial channels. a housing and a main sleeve mounted about an inner periphery of the stator, wherein the housing and the main sleeve define an enclosed cavity which is fluidly isolated from the rotor, and characterized in that each of the cooling passages 2. includes a plurality of radial channels in fluid communication with the axial channel, and wherein the radial channels are spaced about a length of the axial channel, with at least one radial channel being located at a center if the stator core; and a stator end sleeve is located between an outer diameter of the plurality of stator laminations and the housing, wherein each cooling passage includes an opening formed in the stator end sleeve for communicating a cooling fluid to the radial channels.