Cooling hotspots in a stator core flange

In order to reduce the occurrence of hotspots in at least one of a pair of stator flanges 400 each disposed at opposing ends of a stator core assembly to maintain a compressive load on the stator core assembly, heat transport tubes 405 may be located about/within at least one of the stator flanges 300 at an end of the stator core assembly to redistribute heat there from. The heat transport tubes may be heat pipes or thermosyphon devices. The tubes may be arranged radially within the flange and may be non-uniformly spaced (fig 4) and may be arranged so as to have the same nominal angle of tilt (fig 7) A selection of other tube orientations/spacing is disclosed. Alternately the heat transport tubes may be located in the end spacer 910 (Fig 9 not shown) which is in contact with the end frame 920 or may be located in a separate holding plate 1015 (Fig 10 not shown) located between the end frame and end spacer. A coolant jacket 1105 may be additionally arranged adjacent to the end flange (fig 11 not shown).