| 摘要 |
<p>The present invention provides a stator (20) for a tubular electrical generator or motor having a substantially cylindrical inner surface (24) containing a series of axially-spaced slots (26) for receiving the coils (28) of a stator winding. The stator is formed from a plurality of stacked annular laminations (40; 40') that define the slots (26) and the inner surface (24). The laminations comprise circumferentially-spaced radial slits (48) defining fingers (50) that extend radially outwards from their radially inner edges (42; 42'). The slits and fingers reduce the overall eddy losses in the stator (20) whilst permitting simple manufacture, simple assembly and high radial thermal conduction for good cooling. In an alternative embodiment, the laminations and their fingers may be replaced by layers of batons of similar radial extent to the laminations.</p> |
