Flux pump having a high-temperature superconductor and a superconducting electromagnet which can be operated by way of the flux pump
AssigneeSiemens Aktiengesellschaft
InventorGünter Ries
Life of this patent
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Abstract
A flux pump of the rectifier type having high-temperature superconductors with switches, which can be controlled by way of a heater, in particular with trigger pulses D′ and self-stabilization in time with the rectifier is disclosed. An arrangement of the flux pump and a superconductor electromagnet, which may be supplied using the flux pump, may be integrated in a common cryostat housing.
Claims27
An apparatus having a superconductor flux pump including a transformer having, on a secondary side thereof, at least one superconducting transformer coil, and at least one controllable switch, the pump being intended for feeding current into a superconducting coil of an electromagnet, wherein the at least one superconducting transformer coil on the secondary side of the transformer includes an HTc superconductor material, the at least one controllable switch has a switch gap being in the form of a strip, the at least one switch at least in part includes an HTc superconductor material in the form of a thin film which is applied to a buffer layer for texturing of the thin film, and wherein a controllable heater is arranged adjacent to and in thermally conductive contact with the switch gap.
A method of operating a flux pump for feeding current into a superconducting coil of an electromagnet, including a transformer having, on a secondary side thereof, at least one superconducting transformer coil including HTc superconductor material, at least one controllable switch including HTc superconductor material and having a switch gap, and a controllable heater arranged adjacent to and in thermally conducive contact with the switch gap, comprising the step of:
- feeding current pulses to the transformer of the flux pump and driving the controllable heater with a heating pulse during a duration where the controllable switch is in an open state.
The method according to clam 18, wherein during the respective time intervals, a magnetic flux in the transformer is kept substantially constant.
A flux pump and electromagnet arrangement, comprising:
- a transformer having a transformer coil and at least one secondary transformer coil;
- and
- at least one switch being operationally associated with the at least one secondary transformer coil,
- wherein the at least one secondary transformer coil and the at least one switch are at least partially made of HTc superconductor material.
Dependencies are inferred from the claim text.