| 摘要 |
PROBLEM TO BE SOLVED: To facilitate winding by reducing the number of soldering points and man-hours. SOLUTION: A toroidal ring (31) is divided into three pieces at its circumference. Each of a U-phase coil (32U), a V-phase coil (32V) and a W-phase coil (32W) that constitute a three-phase coil (32) is formed by coupling adjacent portions (U1 to U6, V1 to V6 and W1 to W6) of respective coils at prescribed intervals (k). The toroidal ring (31) comprises: first and third divided cores (331 to 333); first and third upper divided insulators (341 to 343) that cover upper sides of the first and the third divided cores, respectively; and first and third lower divided insulators (351 to 353) that cover lower sides of the first and the third divided cores, respectively. Each of the first and the third upper divided insulators has the same number of projections (34a) as the number of the coils of the three-phase coil. COPYRIGHT: (C)2005,JPO&NCIPI
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