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    • 42. 发明专利
    • ARMATURE WINDING FOR THREE-PHASE MOTOR
    • JPH06105495A
    • 1994-04-15
    • JP24913992
    • 1992-09-18
    • HITACHI LTD
    • SHIBUKAWA SUETARO
    • H02K3/28
    • PURPOSE:To reduce in size and weight a three-phase motor by inserting windings wound and shaped in a wave shape in respective phases into slots of an armature. CONSTITUTION:U-phase coils Ua-Ud are, for example, wound and shaped in a wave shape. The coil Ua is inserted into slots 14, 23, the coil Ub is inserted into slots 13, 24, the coil Uc is inserted into slots 1, 12, and the coil Ud is inserted into slots 2, 11. The coil groups Ua-Ud are formed in structures having no coil end of parts corresponding to an N-pole and an S-pole. A maximum coil pitch of the groups Ua-Ud is set to {Ns/P+(q-1)} at the intervals of the slots, and a minimum coil pitch is set to {Ns/P-(q-1)} at the adjacent pole of the poles at the maximum coil pitch at the intervals of the slots. Ns is the number of the slots, P is the number of the poles, and q is the number of the slots at each pole and each phase. Thus, a three-phase motor can be reduced in size and weight.