ARMATURE COIL OF ROTATING ELECTRICAL MACHINERY

摘要

A double-layer winding armature coil that is fitted into 72 three-phase two-pole slots, wherein; each of the phases has six parallel circuits that are divided into two phase belts (17, 18); each of the parallel circuits consist of two coil pieces, an upper coil piece (15) and a lower coil piece (16), which are mutually and serially connected at the connecting-side coil end and the non-connecting-side coil end. The upper coil pieces of the first and fourth parallel circuits are connected, when indicating the relative positions of the upper and lower coils (15, 16) within a phase belt as positions counted sequentially from the pole center, to the third, fourth, seventh and 12th positions from the pole center, and the lower coil pieces are connected to the first, sixth, ninth and 10th positions from the pole center; the upper and lower coil pieces (15, 16) of the second and fifth parallel circuits are connected to the second, fifth, eighth and 11th positions from the pole center; the upper coil pieces of the third and sixth parallel circuits are connected to the first, sixth, ninth and 10th positions from the pole center, and the lower coil pieces are connected to the third, fourth, seventh and 12th positions from the pole center.