Stator having winding cooling for an electrical machine

US11539256B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Dirk Diehl · Erlangen, DE
• Markus Klöpzig · Ebermannstadt, DE
• Heinz Schmidt · Steinfeld (Oldenburg), DE
• Andreas Schröter · Nürnberg, DE
• Aristide Spagnolo · Erlangen, DE
• Markus Wilke · Leverkusen, DE

Key dates

• Filing date: Mar 16, 2018
• Grant date: Dec 27, 2022
• Expiry date: Dec 30, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K9/197
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Various embodiments include stator for an electrical machine comprising: a stator winding; and a yoke with a plurality of slots. There are a plurality of conductor segments connected to one another, wherein each conductor segment has one respective axially internal inner section and two respective axially external outer sections. The respective inner section of each conductor segment is embedded into a respective slot. Ducts for coolant flow in the axial direction are formed at least in a portion of each of the slots. The stator defines, at least in a first axial end region, a first coolant chamber fluidically encapsulated from a surrounding area. The first coolant chamber surrounds at least a portion of the respective outer sections of each of the conductor segments situated in the first axial end region. The first coolant chamber is fluidically connected to the ducts to conduct coolant into and/or out of the ducts.