| 摘要 |
<p>A dynamo-electric machine (10) includes a stator core fixed in a casing (12) and formed of stator lamination plates (34), and a rotor (18) supported in a bore (16) of the stator core and formed of a stack of rotor lamination plates (40). Each stator lamination plate (34) has a tooth portion (58) extending radially outward from the bore (50) to an intermediate circumference (54), and a yoke portion (60) defined between the intermediate circumference (54) and the outer periphery (59) of the stator lamination plate (34). Each of the rotor lamination plates (70) has a number of equally circumferentially spaced closed slots (72, wherein each slot (72) is defined by a curvilinear edge (76) at an upper slot region adjacent the periphery (78) of the plate. The curvilinear edge (76) together with a pair of spaced parallel sides (82a, 82b) together define a top part of each slot (72), the top part opening into a bottom part of the slot (72) which is substantially triangularly-shaped. In one embodiment the teeth (56) of the stator lamination plates (36) are sufficiently wide relative to the area of stator slot openings (52) so that the ratio of flux density in the tooth portion (58) to flux density in the yoke portion (60) is optimized for a given n pole operating configuration of the stator winding.</p> |
