COMPACT CONNECTION SYSTEM FOR POLYPHASE ARMATURE WINDING

• US 3,739,213 A
• Filed: 06/15/1972
• Issued: 06/12/1973
• Est. Priority Date: 06/15/1972
• Status: Expired due to Term

• Current Assignee: David M. Willyoung
• Original Assignee: David M. Willyoung
• Inventors: Willyoung, David M.
• Primary Examiner(s): Duggan, D. F.
• Application Number:
  US05/263,254
• Time in Patent Office: 362 Days
• Field of Search: 310/179,198,200-208
• US Class Current: 310/198
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32

Abstract

An armature winding, comprising series connected phase belts which in turn comprise series-connected coils, is connected in a compact manner by using coil conductors with equal end-arm span at opposite ends and non-radial (slanted) connecting elements between coil conductors plus phase belt jumper connections at a first end to advance the winding in the direction of current flow. Connections to the phase terminals can be made at the other end, permitting separation of the line end and neutral end terminals in substantially diametrically opposite peripheral locations. This minimizes the axial span requirements per phase for winding connections and phase terminals and is useful for the construction of generators with multiple sets of polyphase output (e.g., six phase generators).

Claims

1. A multi-pole polyphase armature winding for a multi-slot stationary armature core element having a first and second spatial end comprising:

one or more star-connected balanced polyphase winding sets, each phase of any of said balanced polyphase winding sets having a neutral end and a line end electrical termination and further having a plurality of successively poled phase belt sections, wherein each of said phase belt sections further comprises a plurality of series connected coils;

each coil further comprising top and bottom armature bars wherein said top and bottom armature bars of each coil have substantially equal end arm peripheral span at said first and second spatial ends of the armature element;

phase belt connections at said first spatial end connecting said successively poled phase belt sections in series to advance the winding in the direction of current flow; and

slanting series loop connection elements also at said first spatial end connecting said top and bottom armature bars in series to advance the winding in the direction of current flow.

2. The armature winding as in claim 1 further including radial series loop connection elements at said second spatial end of said armature element connecting top and bottom armature bars in series to advance the winding in the direction of current flow.

3. The armature winding of claim 1 wherein the neutral end and line end terminations for one balanced polyphase winding set are located at said second spatial end of said armature element.

4. The armature winding of claim 1 wherein the neutral end and line end terminations for one balanced polyphase winding set are located at said first spatial end of the armature element.

5. The armature winding of claim 1 wherein the neutral ends and the line ends of at least one balanced polyphase winding set are located substantially diametrically opposite each other on the same spatial end of said armature element.

6. The armature winding of claim 5 wherein only one balanced polyphase winding set is used.

7. The armature winding of claim 1 wherein two phase-displaced balanced polyphase winding sets are used.

8. The armature winding of claim 7 wherein the neutral end and line end electrical terminations of both balanced polyphase winding sets are located at the same spatial end of said armature element.

9. The armature winding of claim 7 wherein the neutral end and line end terminations of a first balanced polyphase winding set are located at one spatial end of the armature element while the corresponding electrical terminations of a second balanced polyphase set are located at the other spatial end of the armature element.

10. The armature winding of claim 9 wherein the neutral ends and line ends of each balanced polyphase winding set are located in substantially diametrically opposite locations at their respective ends of the armature element.

11. The armature winding of claim 1 wherein each of said polyphase winding sets has a plurality of parallel-connected circuits per phase.

12. A dynamoelectric machine comprising:

a multipole rotor;

a polyphase winding and a multi-slot stationary armatUre core element having a first and second spatial end;

each phase comprising a plurality of successively poled phase belt sections, wherein each of said phase belt sections further comprises a plurality of series connected coils;

each coil further comprising top and bottom armature bars, wherein said top and bottom armature bars of each coil have equal end arm peripheral span at said first and second spatial ends;

phase belt connections at said first spatial end connecting said successively poled phase belt sections to each other in series to advance the winding in a direction of current flow; and

slanting connection elements at said first spatial end connecting said top and bottom armature bars in series to advance the winding in the direction of current flow.

13. A dynamoelectric machine as in claim 12 wherein neutral end line and line end terminations of said phase windings are located substantially diametrically opposite each other on one spatial end of said armature element.

14. A dynamoelectric machine as in claim 13 wherein said electrical terminations are located at the second spatial end of the armature element.