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US 2026/0280380 A1Published application
Electric motor with vibration damping structure
AssigneeABB Schweiz AG
InventorCharles Konzelman
Life of this patent
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Abstract
The present disclosure is directed to improvements for an electric motor which reduce vibrations thereof. In particular, an electric motor body is constructed at least in part using a constrained layer damping structure. Additionally, a plug material is used to fill gaps within the electric motor body and respective components. Furthermore, a sealing layer is provided for use between rotor disks to decouple vibrations therebetween. Embodiments are provided which describe different examples of materials for use therein.
Claims20
An electric motor comprising:
- a casing defining a casing chamber, the casing comprising a constrained layer damping structure;
- at least one casing end cap which is affixed to an end of the casing chamber, the at least one end cap comprising a constrained layer damping structure;
- a stator disposed within the casing chamber, the stator comprising an annular structure which defines a stator chamber, the annular structure comprising a plurality of current-carrying windings;
- and
- a rotor disposed in the stator chamber, the rotor comprising a number of rotor disks along a rotor shaft.
2 more elements
An electric motor comprising:
- a stator comprising a plurality of current-carrying windings;
- a rotor disposed proximate the stator, the rotor comprising at least two rotor disks mounted on a rotor shaft, each of the at least two rotor disks being adjacent at least one rotor disk, adjacent rotor disks defining a space, wherein a sealing layer is located in each space defined by adjacent disks, and wherein each of the at least two rotor disks comprising at least one magnet positioned adjacent at least one groove wall and defining at least one groove recess therebetween.
An electric motor comprising:
- a casing defining a casing chamber, the casing comprising a constrained layer damping structure;
- at least one casing end cap which is affixed to an end of the casing chamber, the at least one end cap comprising a constrained layer damping structure;
- a stator disposed within the casing chamber, the stator comprising an annular structure which defines a stator chamber, the annular structure comprising a plurality of current-carrying windings, wherein the annular structure of the stator and the casing chamber define a gap therebetween, wherein the gap is filled with an annular member which is co-axial with the stator chamber, and wherein the annular member comprises a plug material;
- the stator further comprising at least one winding void defined between adjacent current-carrying windings;
- and
- a rotor disposed in the stator chamber, the rotor comprising a number of rotor disks along a rotor shaft, each rotor disk located along the shaft being adjacent at least one other rotor disk, each rotor disk and adjacent rotor disk defining a space therebetween, the rotor further comprising a sealing layer located in each defined space,
- wherein each rotor disk comprises at least one magnet adjacent at least one groove wall and defining at least one groove recess therebetween, and
- wherein each groove recess and each winding void are filled with the plug material.
5 more elements
Dependencies are inferred from the claim text.