Electrical machine, and method for cooling such electrical machine
AssigneeVolvo Truck Corporation
InventorsFeng Gao, Ivar Alm, Ronald Susic, Rasmus Andersson, Nikhil Manakshya, John Lord
Life of this patent
Estimating the term…
Abstract
An electrical machine is provided. The electrical machine comprises a housing enclosing a rotor and a stator, wherein said stator comprises a stator core and end turns extending axially beyond the stator core. The electrical machine further comprises a first cooling system providing a flow of oil to the end turns of the stator, and a second cooling system having an axial end section overlapping the axial position of the end turns of the stator. The axial end section of the second cooling system is provided with one or more cooling fins.
Claims15
An electrical machine, comprising a housing enclosing a rotor and
- a stator, wherein said
- stator comprises a stator core and end turns extending axially beyond the stator core,
- wherein the electrical machine further comprises:
- a first cooling system providing a flow of oil to the end turns of the stator, and
- a second cooling system having an axial end section overlapping the axial position of the end turns of the stator,
- wherein the axial end section of the second cooling system is provided with one or more cooling fins, and
- the second cooling system is configured to remove excess heat from the cooling oil by allowing the cooling oil to flow across one or more cooling fins of the second cooling system.
A method for cooling an electrical machine, comprising:
- operating a first cooling system to provide a flow of cooling oil to end turns of a stator of the electrical machine,
- operating a second cooling system to cool the cooling oil after interacting with the end turns of the stator, and
- removing excess heat from the cooling oil by allowing the cooling oil to flow across one or more cooling fins of the second cooling system.
Dependencies are inferred from the claim text.