| 摘要 |
A permanent magnet electrical machine ( 10 ) has a rotor ( 12 ) and an armature ( 18 ). Armature coils ( 34 ) are received in pairs of slots ( 30 ). The walls of the slots ( 30 ) are parallel to themselves and to the walls of the other slot ( 30 ) of the same slot pair. Thus, parallel sided locator teeth ( 32 ) exist between the slots ( 30 ) of a slot pair, and tapering spacer teeth ( 44 ) exist between adjacent slot pairs. The spacer teeth ( 44 ) are narrower than the locator teeth ( 32 ) to provide a greater magnetic flux linkage with the locator teeth, and thus increasing the emf within the corresponding coil ( 34 ).
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