General Electric Company

Sammy L Miller

Alan L Kindig

Calvin Humes, Jr

Dynamoelectric machine stator assemblies are disclosed in which end turns of the different windings are separated by winding end turn insulating portions of a plurality of individual phase insulators. The end turn insulating portions of the phase insulators are disposed in overlapping pinwheel configuration with overlapping portions of the insulators being disposed adjacent each other along the entire extent of the overlap.

Dynamoelectric machine stator assembly

Dynamoelectric machine stator assemblies with new and improved winding interconnection arrangements are disclosed. Windings are disposed in slots of a magnetic core with end turn portions thereof disposed adjacent a core face. The winding end turn portions are compressed and shaped to receive and support a connection insulator. A connection insulator comprising a plurality of holsters contains tap wire connection points and is located within a deformed section at the outer peripheral surface of the winding end turns. The connection insulator is retained in position by a retention means and secured to the winding end turns by lacing material.

End turn and terminal support for a stator assembly

An insulated internal connection arrangement between a terminal end of a winding of a dynamoelectric machine and at least one other wire conductor is disclosed. The connection arrangement includes an insulator having at least one elongated generally tubular receptacle with one end thereof open and the other end closed and having an internal restriction between the open and closed ends. A connector disposed within the at least one receptacle, electrically joins winding and wire conductor ends. The connector has a flared portion which cooperates with the internal restriction to firmly capture the connector within the receptacle. The insulator may include a plurality of receptacles formed from a single sheet of insulating material with the receptacles disposed generally coplanar and with each receptacle opening in the same direction. The internal restriction may comprise a depression extending transverse to each of the receptacles. The insulator may be formed by rolling a sheet of insulating material in a sinuous pattern to form a plurality of receptacles and providing a seam generally along a path in the direction of elongation of those receptacles to maintain the sheet in its sinuous configuration. A transverse seam is formed near one end of the rolled sheet to close the receptacles at that one end, and a side wall of one or more of the receptacles is deformed, for example, by heating in a region between the closed and open ends of the receptacles to form the connector holding internal irregularity or restriction. When the connected conductors are inserted into the receptacle open end, the connector passes beyond the internal irregularity or restriction, and the restriction cooperates with a flared trailing edge of the connector to hold the connector and its associated conductors within the receptacle.

Apparatus for insulating an internal motor connection

Methods and apparatus are disclosed for fabricating dynamoelectric machine stator assemblies in which end turns of the different windings are separated by winding end turn insulation. In one disclosed method, a plurality of phase insulators are deformed and constrained in a substantially cylindrical configuration and moved axially into a stator core bore. The phase insulators are moved radially outward of the substantially cylindrical configuration with connectors of the insulators moving into predetermined slots of the core. In one disclosed apparatus, a substantially cylindrical arbor is provided with longitudinally extending grooves therein for positioning and accommodating connectors of the phase insulators. The phase insulators are deformed about a peripheral surface of the arbor and then retained adjacent thereto during insertion of the arbor into the bore of a core. The connectors are aligned and moved from the arbor grooves into predetermined core slots. In another aspect, an ejecting means is also disclosed for engaging and positively moving at least some of the connectors from the arbor grooves and thereby aid the stored energy, produced in the insulators by the deforming, in positioning the connectors within predetermined core slots.

Methods and apparatus for inserting winding end turn phase insulation

Dynamoelectric stator assemblies and methods of fabricating stator assemblies with new and improved winding interconnection arrangements are disclosed. In one disclosed method, windings are generated and disposed in slots of a magnetic core with end turn portions thereof being disposed adjacent a core face. At a tap insulating station, selected winding tap wires are insulated and routed to a common connecting region. The core with winding turns therein is then moved to an end turn pressing station to compress and shape the winding end turns and to condition the end turns to subsequently receive and support a connection insulator. At a connection station, a tap support and aligning means is interfitted with the core for receiving the tap wires and lead wires therein. After interconnections between respective tap wires and lead wires have been made by a connection apparatus, a connection insulator comprising a plurality of holsters is placed over connection points resulting from the interconnections thereby supporting and electrically isolating the connection points. The core and tap support and aligning means are removed from the interfitting relationship. The connection insulator is then positioned within a deformed section at the outer peripheral surface of the winding end turns established during the pressing operation. The connection insulator is retained in position by a retention means and then subsequently secured to the winding end turns by disposing lacing material about the end turns and connection insulator at a lacing station.

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Singapore, Singapore

Sammy L Miller