H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/107
H02K 3/46 (2006.01) H02K 3/04 (2006.01) H02K 3/47 (2006.01) H02K 55/04 (2006.01)
Patent
CA 1140977
48, 439 ABSTRACT OF THE DISCLOSURE A support structure for unitizing coil turns into a single member and bracing each coil of a multi-coil stator dynamoelectric machine. Each stator coil includes several turns relatively concentrically disposed. Each coil turn constitutes two longitudinal conductor portions and two end turn conductor portions. One end turn portion serially connects two longitudinal portions and the re- maining end turn portion serially connects one of the longitudinal portions with a longitudinal portion of a concentrically adjacent coil. Each coil preferably lies in a plane defined by a portion of a cylinder and the coils are disposed in a cylindrical arrangement having a longitudinal axis therethrough such that one longitudinal portion of the outermost coil turn lies along the outer radial extent of the cylindrical arrangement and the remaining longitudinal portion of the outermost coil turn lies radially nearer the longitudinal axis of the cylin- drical arrangement. A rigid foundation member is situated in the plane of each coil within the concentrically inner- most turn. Turns of each coil are structurally connected either directly to the foundation member or indirectly to the foundation member by being intermediately joined to a turn already joined to the foundation member. The concen- tric turns of each coil are separated by a predetermined distance through the use of interposed spacer members situated at desired axial and circumferential locations. Such coils present a spiral pancake appearance and are cooperatively disposed in the cylindrical arrangement 13 48,439 between radially inner and outer supporting structures. Appropriately shaped wedges are disposed between selected coils and internal/external supporting members to account for the skewed or spiral manner in which each of the coils is arranged in the substantially cylindrical arrangement. Radial tie rods extending between the radially internal and external support members structurally integrate those members so as to insure structural integrity of the cylin- drical arrangement. The radially external support member is preferably configured to extract load components from individual coil turns exposed at the cylindrical arrange- ment's outer periphery by either having radially inwardly directed struts extending between adjacent turns or having notches within which the radially outer conductor turns, when canted, are receivable.
356779
Flick Carl
Ying Sui-Chun
Mcconnell And Fox
Westinghouse Electric Corporation
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