a motor winding

Abstract

The invention discloses a motor winding. The motor winding comprises a stator and a plurality of A-phase coils, a plurality of B-phase coils and a plurality of C-phase coils which are mutually overlapped and arranged on the stator, wherein the A-phase coils, the B-phase coils and the C-phase coils are overlapped mutually in pairs; first type of coils and second type of coils are contained in the A-phase coils, the B-phase coils and the C-phase coils respectively; the angles of the first type of coils at the end of the motor winding are maintained to be parallel to the axial direction of the stator; the second type of coils are of inclined angles relative to the axial direction of the stator at the end of the motor winding; and the inclined angles guarantee that the second type of coils getround the first type of coils adjacent to the second type of coils in the minimum lengths. Only the two types of coils are adopted for mutual overlapping, mutual overlapping of the two types of coilsis realized at the ends of the coils in a compact manner, and the lengths of the ends of the coils are obviously reduced, so that the winding material is reduced, the winding loss is also reduced while the cost is reduced, the efficiency of a power generator is improved, the occupancy rate of the winding end space is further reduced, and the influence of the end winding on a heat dissipation airflue is reduced.

Description

technical field [0001] The invention relates to a motor winding. Background technique [0002] figure 1 and figure 2 Shown is the structure of the end winding of a traditional permanent magnet direct drive wind power generator. The coil is arranged in the winding slot, and the two sides of the slot 2' are teeth 1', in which every three coils form a group, and the first coil 1-1 ', the second coil 1-2' and the third coil 1-3' respectively correspond to the three phases ABC. Because the adjacent slots are in different phases, the windings of the same phase must cross other windings of different phases. The three coils overlap at the end, and every three coils at the end of the winding need to avoid each other, so the three coils are designed separately. Different inclination angles make the end shapes of the three coils also different, which increases the length of the end windings accordingly, thereby increasing the winding material and winding loss, and reducing the effi...

AI Technical Summary

Problems solved by technology

Because the adjacent slots are in different phases, the windings of the same phase must cross other windings of different phases. The three coils overlap at the end, and every three coils at the end of the winding need to avoid each other, so the three coils are designed separately. different inclination angles, which makes the end shapes of the three coils also different, which correspondingly increases the length of the end windings, thereby increasing the winding material and winding loss, and reducing the efficiency of the generator

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