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US 7,282,832 B2Granted
Axially-expandable EM shield
AssigneeAmerican Superconductor Corporation
InventorRaymond T. Howard
Life of this patent
Estimating the term…
Abstract
A superconducting rotating machine includes a stator assembly having at least one stator coil assembly. A rotor assembly, which includes an axial shaft, is configured to rotate within the stator assembly. The rotor assembly includes at least one superconducting winding assembly. A first and second end plate are rigidly attached to the axial shaft at distal ends of the at least one superconducting winding assembly. An asynchronous field filtering shield surrounds the at least one superconducting winding assembly. A first interconnection assembly connects the shield to the first end plate. The first interconnection assembly allows for axial movement between the shield and the first end plate but restricts tangential movement between the same.
Claims45
A superconducting rotating machine comprising:
- a stator assembly including at least one stator coil assembly;
- and
- a rotor assembly, including an axial shaft, which is configured to rotate within said stator assembly, said rotor assembly including:
- at least one superconducting winding assembly;
- a first end plate and a second end plate, each being rigidly attached to said axial shaft at distal ends of said at least one superconducting winding assembly;
- an asynchronous field filtering shield which surrounds said at least one superconducting winding assembly;
- and
- a first interconnection assembly for connecting said shield to said first end plate, said first interconnection assembly being configured to allow axial movement between said shield and said first end plate and restrict tangential movement between said shield and said first end plate;
- wherein the superconducting rotating machine further comprises a vacuum chamber sleeve which surrounds said at least one superconducting winding assembly and is positioned between said shield and said at least one superconducting winding assembly, wherein the distal ends of said sleeve are rigidly attached to said end plates of said rotor assembly.
6 more elements
A superconducting rotating machine comprising:
- a stator assembly including at least one stator coil assembly;
- and
- a rotor assembly, including an axial shaft, which is configured to rotate within said stator assembly, said rotor assembly including:
- at least one superconducting winding assembly;
- a first end plate and a second end plate, each being rigidly attached to said axial shaft at distal ends of said at least one superconducting winding assembly;
- an asynchronous field filtering shield which surrounds said at least one superconducting winding assembly;
- a first interconnection assembly for connecting said shield to said first end plate, said first interconnection assembly being configured to allow axial movement between said shield and said first end plate and restrict tangential movement between said shield and said first end plate;
- and
- a second interconnection assembly for connecting said shield to said second end plate, said second interconnection assembly being configured to allow axial movement between said shield and said second end plate and restrict tangential movement between said shield and said second end plate;
- wherein said first end plate is a multi-part end plate, said multi-part end plate including:
- an outer radial portion connected to said first interconnection assembly;
- an inner radial portion connected to said axial shaft;
- and
- an interlocking assembly for removably attaching said outer radial portion and said inner radial portion.
11 more elements
A superconducting rotating machine comprising:
- a stator assembly including at least one stator coil assembly;
- and
- a rotor assembly, including an axial shaft, which is configured to rotate within said stator assembly, said rotor assembly including:
- at least one superconducting winding assembly;
- an asynchronous field filtering shield which surrounds said at least one superconducting winding assembly;
- a first end plate and a second end plate, each being rigidly attached to distal ends of said shield;
- and
- a first interconnection assembly for connecting said first end plate to said axial shaft, said first interconnection assembly being configured to allow axial movement between said axial shaft and said first end plate and restrict tangential movement between said axial shaft and said first end plate;
- wherein the superconducting rotating machine further comprises a vacuum chamber sleeve which surrounds said at least one superconducting winding assembly and is positioned between said shield and said at least one superconducting winding assembly, wherein the distal ends of said sleeve are rigidly attached to said end plates of said rotor assembly.
6 more elements
A superconducting rotor assembly comprising:
- an axial shaft;
- at least one superconducting winding assembly;
- a first end plate and a second end plate, each being rigidly attached to said axial shaft at distal ends of said at least one superconducting winding assembly;
- an asynchronous field filtering shield which surrounds said at least one superconducting winding assembly;
- and
- a first interconnection assembly for connecting said shield to said first end plate, said first interconnection assembly being configured to allow axial movement between said shield and said first end plate and restrict tangential movement between said shield and said first end plate;
- wherein the superconducting rotor assembly further comprises a vacuum chamber sleeve which surrounds said at least one superconducting winding assembly and is positioned between said shield and said at least one superconducting winding assembly, wherein the distal ends of said sleeve are rigidly attached to said end plates.
4 more elements
A superconducting rotor assembly comprising:
- an axial shaft;
- at least one superconducting winding assembly;
- a first end plate and a second end plate, each being rigidly attached to said axial shaft at distal ends of said at least one superconducting winding assembly;
- an asynchronous field filtering shield which surrounds said at least one superconducting winding assembly;
- and
- a first interconnection assembly for connecting said shield to said first end plate, said first interconnection assembly being configured to allow axial movement between said shield and said first end plate;
- wherein said first end plate is a multi-part end plate, said multi-part end plate including:
- an outer radial portion connected to said first interconnection assembly;
- an inner radial portion connected to said axial shaft;
- and
- an interlocking assembly for removably attaching said outer radial portion and
- said inner radial portion.
9 more elements
Dependencies are inferred from the claim text.