Alternating-current generator having a stator and a stator winding made of winding elements inserted in stator slots and a method for producing a stator of the present invention

US8878413B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gert Wolf · Marbach am Neckar, DE
• Thomas Berger · Ditzingen, DE
• Eberhard Rau · Ditzingen, DE
• Alexander Shendi · Asperg, DE
• Helmut Kreuzer · Schwieberdingen, DE
• Christoph Schwarzkopf · Walheim, DE

Key dates

• Filing date: Jan 2, 2008
• Grant date: Nov 4, 2014
• Expiry date: Aug 7, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49009
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An alternating-current generator, in particular a three-phase generator, for a motor vehicle, having a rotor including north and south poles, particularly having claw-pole fingers extending in the axial direction and alternating as north and south poles at the rotor's periphery, a stator having a magnetic core, especially laminated core, having slots and a stator winding disposed in the magnetic core's slots, the stator winding having winding overhangs that are coolable by an approximately radial air flow produced by at least one fan mounted at the rotor, the stator being situated opposite the rotor, and the stator and the rotor having defined positions relative to each other, the multiphase stator winding being made up of winding elements, at least one winding element having more than two sections inserted in slots, and at least one winding element having more than one reversal section which brings about a change in the radial position.