초록 ▼

A rotating electrical machine with a reverse flow ventilation system is constructed with one or more discharge ducts at the center of the stator core to reduce the air gap pressure and promote more uniform cooling. In a second embodiment, discharge ducts are provided axially displaced from the cente

A rotating electrical machine with a reverse flow ventilation system is constructed with one or more discharge ducts at the center of the stator core to reduce the air gap pressure and promote more uniform cooling. In a second embodiment, discharge ducts are provided axially displaced from the center line of the core. In another embodiment, end region cooling of the conductor bars is enhanced by a series-parallel flow path constructed with the use of baffles and an apertured plate. In a final embodiment, both stator core center discharge ducts and series-parallel flow end region cooling are incorporated in the same machine.

대표청구항 ▼

A rotating electrical machine comprising, a stator and a rotor, a reverse flow cooling system, and a stator end region cooling subsystem with a series-parallel cooling gas flow path through stator end region components, wherein said stator end region components include conductor bar sections with ba

A rotating electrical machine comprising, a stator and a rotor, a reverse flow cooling system, and a stator end region cooling subsystem with a series-parallel cooling gas flow path through stator end region components, wherein said stator end region components include conductor bar sections with baffles coupled thereto for directing a cooling gas through said conductor bar sections, and an apertured plate for splitting the cooling gas into a first portion directed by said baffles in a series path through said conductor bar sections and a second portion passing through said aperture for mixing with said first portion at a point downstream in said conductor bar sections.