Rotating electric machine with coil supports
AssigneeABB AB
InventorsGUNNAR KYLANDER, ARNE EDMAN, MATS LEIJON, NILS-IVAR LANDGREN
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Abstract
The invention relates to a rotating electric machine comprising a stator (4) provided with windings drawn through slots in the stator, and a rotor (1) having a central axis (2) and poles (5, 6) in the form of pole pieces (8, 9) provided with windings and forming solenoids, pole gaps (13) being arranged between the poles. The machine also comprises coil supports (15, 16) in said pole gaps in order to support the solenoid windings (10, 11). It is characterized in that the coil supports (15, 16) are arranged in pairs and that each coil support (15, 16) is shaped so that it supports only a part of the solenoid windings (10, 11) of the two adjacent poles (5, 6).
Claims13
A rotating electric machine comprising a stator (4) provided with windings inserted in slots in the stator, and a rotor (1) having a central axis (2) and poles (5, 6) in the form of pole pieces (8, 9) provided with windings and forming solenoids, in which rotor pole gaps (13) are being provided between the poles, and comprising coil supports (15, 16) disposed in said pole gaps in order to support the solenoid windings (10, 11), characterized in that the coil supports (15, 16) are arranged in pairs, that each of said coil supports (15, 16) in a pair is shaped so that it supports only a part of the solenoid windings (10, 11) of the two adjacent poles (5, 6), and that two coil supports (15, 16) in a pair are arranged axially and radially displaced in relation to each other to allow a cooling gas to flow between the coil supports.
A rotating electric machine as claimed in any of the preceding claims, characterized in that each of the two coil supports (15, 16) in a pair occupies substantially half of the area of the corresponding pole gap (13) in the radial direction.
A rotating electric machine as claimed in any of the preceding claims, characterized in that one of the two coil supports (15, 16) in a pair is arranged to support substantially half of the windings (10, 11) of the two adjacent poles (5, 6) and that the other of the two coil supports is arranged to support substantially the other half of said windings.
A rotating electric machine as claimed in any of the preceding claims, characterized in that one of the two coil supports (15, 16) in a pair is arranged to support substantially half of the windings (10, 11) of the two adjacent poles (5, 6) and that the other of the two coil supports is arranged to support the other half of said windings and an additional small number of windings in order to secure an overlap of supported windings.
Dependencies are inferred from the claim text.