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Internally damped stator, rotor, and transformer and a method of making
| Details |
Inventors: Landin, Donald T.; Johnson, Gordon G.; McCutcheon, Jeffrey W.; Hilderbrand, Larry S.;
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Primary Examiner: Vidovich; Gregory M.
Assistant Examiner: Kenny; Stephen
Attorney, Agent or Firm: Harts; Dean M.
The present invention provides internally damped stators, rotors, and transformers; internally damped cores from which they may be made; and a method of making the aforementioned. |
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DETAILED DESCRIPTION The present invention provides in one embodiment an internally damped core, wherein the core is selected from the group consisting of stator, rotor, and transformer cores.
The present invention provides in another embodiment an internally damped core having at least one inner layer of vibration damping material comprising a viscoelastic material contained therein, wherein the core is selected from the group consisting of stator, rotor and transformer cores.
The present invention provides in another embodiment an internally damped core, wherein the internally damped core comprises a laminate comprising: (a) two outer magnetic layers; (b) an inner layer of vibration damping material comprising a viscoelastic material positioned between the two outer magnetic layers; wherein the core is selected from the group consisting of stator, rotor and transformer cores.
The present invention provides in another embodiment an internally damped core, wherein the internally damped core comprises a laminate comprising: (a) two outer magnetic layers; (b) at least two inner vibration damping material layers comprising a viscoelastic material positioned between the two outer magnetic layers; (c) at least one magnetic layer positioned interior to the outer magnetic layers; wherein the core is selected from the group consisting of stator, rotor, and transformer cores.
The present invention provides in another embodiment the internally damped core wherein each vibration damping material layer is positioned between two magnetic layers.
The present invention provides in another embodiment the core wherein each magnetic layer comprises a ring having poles extending therefrom.
The present invention provides in another embodiment the core wherein each ring has at least 4 poles extending therefrom.
The present invention provides in another embodiment the core wherein each ring has at least 8 poles extending therefrom.
The present invention provides in another embodiment an internally damped stator comprising the core, wherein the core is a stator core, and wire wrapped around the poles of the core
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