| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronous machine that makes it possible to reduce vibration, electromagnetic noise, and the like arising from torque ripples, is small in the number of wire connecting points and thus excellent in ease of miniaturization and mass productivity, and is high in operating efficiency. SOLUTION: The number of field poles 9 and the number of coils 7 have the relation expressed as 10:12. Each coil 7 is of double three-phase and is constructed of first and second coil groups. The individual coils 7 contained in the first and second coil groups are alternately disposed in the direction of the circumference of a stator 2. The coils contained in the first coil group and the coils contained in the second coil group are respectively delta-connected. The coils 7 of each phase contained in the first and second coil groups are connected in series with one another on a phase-by-phase basis in the respective coil groups. The individual coils contained in the first coil group are so wound that their winding direction is opposite to that of the individual coils contained in the second coil group. COPYRIGHT: (C)2008,JPO&INPIT
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