Peripheral connector ring stator end winding for dynamoelectric machines

• US 4,321,497 A
• Filed: 04/10/1980
• Issued: 03/23/1982
• Est. Priority Date: 04/10/1980
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Long, Lawrence J.
• Primary Examiner(s): Budd, Mark O.
• Application Number:
  US06/139,083
• Time in Patent Office: 712 Days
• Field of Search: 310/260, 310/270, 310/198-204
• US Class Current: 310/198
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/12 arranged in slots
• CPC Class Codes: H02K 3/22 consisting of hollow conductors
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence

Abstract

The polyphase stator winding of a dynamoelectric machine consists of a plurality of coils circumscribed about one another. Each coil has at least one end turn which includes two coil sides and a C-shaped connector ring that joins the coil sides together. The coil sides are straight conductors, or ones that are slightly bent on each end, and are embedded within the stator slots and extend into the end basket region of the machine where they are joined together by the C-shaped connector rings.

Claims

1. A dynamoelectric machine having a generally tubularly shaped stator with a plurality of slots around said stator'"'"'s inner periphery and a polyphase stator winding disposed therein, said stator winding comprising:

a plurality of bottom coils, each of said bottom coils being generally straight, each of said plurality of bottom coils being disposed within a preselected one of said plurality of slots, said plurality of bottom coils being associated in a generally cylindrical shape coaxial with said generally tubularly shaped stator;

a plurality of top coils, each of said top coils being generally straight, each of said plurality of top coils being disposed within a preselected one of said plurality of slots, said plurality of top coils being associated in a generally cylindrical shape coaxial with said generally tubularly stator and disposed radially inward from said generally cylindrical association of bottom coils;

a plurality of generally C-shaped connectors, each of said plurality of generally C-shaped connectors having a first terminus connectable to a preselected one of said plurality of top coils and a second terminus connectable to a preselected one of said bottom coils;

means for connecting said first terminus to said preselected one of said plurality of top coils;

means for connecting said second terminus to said preselected one of said plurality of bottom coils;

wherein each of said plurality of said bottom and top coils axially extends a preselected distance from said stator;

wherein said preselected one of said plurality of top coils and said preselected one of said plurality of bottom coils extend approximately equal preselected distances from said stator;

wherein said plurality of generally C-shaped connectors is disposed in a generally cylindrical shape, axially displaced from and generally coaxial with said stator wherein each of said plurality of generally C-shaped connectors has a radius of curvature greater than that of said generally cylindrical association of said bottom coils; and

whereby said plurality of C-shaped connectors are disposed radially outward from said plurality of bottom coils.

2. The dynamoelectric machine according to claim 1 further comprising a means for circulating coolant throughout said polyphase stator winding.

3. The dynamoelectric machine according to claim 2 wherein said means for circulating said coolant throughout said polyphase stator winding further comprises:

a hollow conductor contained within each of said coils and each of said plurality of generally C-shaped connectors;

a plurality of headers for connecting each of said plurality of generally C-shaped connectors to said preselected top and bottom coils;

a nipple mounted on each of said plurality of headers facilitating connecting said headers to a cooling system; and

means for circulating said coolant through said cooling system and said polyphase stator winding.

4. The dynamoelectric machine according to claim 1 further comprising a means for bracing said C-shaped connector.