Winding method for an electrical generator and generator manufactured by the method

• US 4,307,311 A
• Filed: 04/16/1980
• Issued: 12/22/1981
• Est. Priority Date: 05/25/1979
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Grozinger, Alfred
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Ginsburg, Morris
• Application Number:
  US06/140,719
• Time in Patent Office: 615 Days
• Field of Search: 310/179, 310/180, 310/184, 310/198-208, 29/596, 242/1.1 R
• US Class Current: 310/179
• 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
• CPC Class Codes: Y10S 174/22 Winding per se
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

A three-phase stator winding of an alternator is divided into six partial windings. Each partial winding, regardless of electrical phase, is wound starting at the slot immediately adjacent to the slot wherein the last previously wound winding was started and in the same winding direction. The first partial windings for the subsequent phases are also inserted in the slots in the same direction as the first partial winding for the first phase, so that connecting arcs are formed on the same side of the stator as was the case for the first phase. The second partial windings for each phase are placed so that the connecting arcs form on the side of the stator opposite to that on which the first connecting arcs were formed. The winding starts and winding ends of each of the partial windings associated with a given phase are connected so that the partial windings are connected either in series or in parallel. The so-formed series or parallel circuits are then connected to form either a Y or a Δ configuration.

Claims

1. Method for automatically winding stator windings in the slots of a stator of an n phase alternator, comprising the steps of

winding each of a plurality of partial windings in its entirety in said slots of said stator, each starting at a starting slot immediately adjacent to the starting slot of the last previously wound of said partial windings, each skipping a plurality of slots equal in number to n-1 so that said partial windings mutually overlap and fill said slots with optimum utilization of the space therein, each of said partial windings having a winding start and a winding end;

and

subsequently interconnecting said winding starts and winding ends electrically in accordance with the placement of each of said partial windings in said slots.

2. A method as set forth in claim 1, wherein at least a first and second partial winding is associated with each of said phases;

wherein said stator has a first and second side extending in a direction substantially perpendicular to the direction of said slots;

wherein said first partial winding of each of said phases is placed in the associated ones of said slots so that first connecting arcs form alternately at said first and second sides of said stator for each of said partial windings; and

wherein said second partial winding of each of said phases is placed in the slots of the corresponding one of said first partial windings in a direction opposite thereto so that second connecting arcs located on said sides of said stator opposite said first connecting arcs are formed.

3. A method as set forth in claim 2, wherein said first partial windings of each of said phases following said first phase is placed in said slots so that said connecting arcs form on the same side of said stator as said connecting arcs of said first partial winding of said first phase.

4. A method as set forth in claim 1, wherein said alternator is a three-phase alternator;

wherein six partial windings are wound on said stator; and

wherein said step of connecting said winding starts and winding ends comprises connecting said winding starts and winding ends of each of said first and second partial windings together to form a series or a parallel circuit, and connecting the so-formed series or parallel circuit to form a predetermined electrical configuration.

5. A method as set forth in claim 4, wherein said electrical configuration is a Y connection.

6. A method as set forth in claim 4, wherein said electrical configuration is a Δ

configuration.

7. In an n phase alternator having a stator having a plurality of slots, a stator winding comprising

at least a first and second partial winding for each of said phases, said partial windings being inserted in said slots of said stator in their entirety, each starting at a stator slot immediately adjacent to the stator slot of the start of the last previously wound of said partial windings, each of said partial windings having a winding end and a winding start;

and

means for connecting said winding starts and winding ends of partial windings associated with a given phase to each other to form a series or a parallel circuit, and for connecting the so-formed series or parallel circuit to form a predetermined electrical configuration.

8. An alternator as set forth in claim 7, wherein said predetermined electrical configuration is a Y circuit.

9. An alternator as set forth in claim 7, wherein said predetermined electrical configuration is a Δ

circuit.