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US 6,958,898 B2Granted
Flux pump with a superconductor and superconducting electromagnet to be operated therewith
AssigneeSiemens Aktiengesellschaft
InventorsGünter Ries, Florian Steinmeyer, Markus Vester
Life of this patent
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Abstract
A device includes a flux pump and an electromagnet to be fed thereby for the production of highly constant magnetic fields of high field strength. In a flux pump of the rectifier type, switches used are MOSFETs. These MOSFETs include HTc superconductor material at operating temperatures. Preferably, the flux pump and a coil of the electromagnet are arranged in one and the same cryostat housing.
Claims32
A device, comprising:
- a superconductor flux pump with a transformer, the transformer including, on a secondary side, at least one superconducting coil in a rectifier circuit and at least two controllable switches;
- and
- a superconducting coil of an electromagnet,
- wherein the pump feeds current into the superconducting coil,
- wherein the respective secondary-side coil of the transformer includes superconductor material with high critical temperature Tc,
- wherein the flux pump and the superconducting coil of the electromagnet are arranged together in a common vacuum chamber of a cryostat, wherein each of the at least two controllable switches in the secondary-side rectifier circuit includes a plurality of MOSFETs electrically connected in parallel to one another, and wherein the MOSFETs are arranged on a base plate of a relatively high thermally conducting material.
3 more elements
A superconductor flux pump, comprising:
- a transformer, the transformer including, on a secondary side, at least one superconducting coil in a rectifier circuit and at least two controllable switches, the pump being provided to feed current into a superconducting coil of an electromagnet, wherein the respective secondary-side coil includes superconductor material with high critical temperature Tc, wherein each of the at least two controllable switches in the secondary-side rectifier circuit includes a plurality of MOSFETs electrically connected in parallel to one another, and wherein the MOSFETs are arranged on a base plate of a relatively highly thermally conducting material.
Dependencies are inferred from the claim text.