| 摘要 |
PROBLEM TO BE SOLVED: To supply sufficient oil to all the coils of a stator to improve cooling efficiency. SOLUTION: A three-phase AC power generator 10 includes an outer rotor integrally rotating with a crank shaft and a stator 16 opposed to the outer rotor. The stator 16 coil is formed by parallel connection of series coils having two sets each of U-, V-, W-phases. The coil 32 is formed by lead wires of two or more different wire diameters according to arrangement positions, and the wire diameters of the series coil lead wire, containing the coils 32v<SB>1</SB>, 32u<SB>3</SB>near an anchor fitting 40 being the drawing portion of the lead wire, is made larger. Whereas the wire diameters of the series coil lead wire, containing the lower end coil 32w<SB>2</SB>of the stator 16 low in temperature rise, are made smaller. COPYRIGHT: (C)2009,JPO&INPIT
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