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High temperature superconduction flux pump

A high-temperature superconducting and magnetic flux technology, applied in the usage of superconductor elements, transformer/inductor cores, transformers, etc., can solve problems such as complex structures and flux pumps that can only work in the liquid helium temperature zone

Inactive Publication Date: 2009-02-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of frequency converter, this structure is more complicated
Due to the use of niobium, this magnetic flux pump can only work in the liquid helium temperature range

Method used

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  • High temperature superconduction flux pump
  • High temperature superconduction flux pump
  • High temperature superconduction flux pump

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Embodiment Construction

[0031] The present invention is further described in conjunction with accompanying drawing:

[0032] Such as figure 1 As shown, the working circuit diagram of the magnetic flux pump, during the working process of the magnetic flux pump, the current connector 2 at both ends of the magnetic flux pump is connected to the high temperature superconducting closed loop, and the high temperature superconducting closed loop is composed of superconducting magnet connector 3, superconducting magnet Composed of magnet 4 and equivalent resistance 5, the magnetic flux pump works in this high temperature superconducting closed loop, which can enhance the magnetic flux in the closed loop, realize the excitation of the magnet, and play the role of power supply. The high temperature superconducting magnetic flux pump of the present invention allows the equivalent resistance to be within 100 microohms.

[0033] Such as figure 2 As shown, a structure diagram of a magnetic flux pump is known, a...

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Abstract

A flux pump with a high temperature superconductor belongs to the flux pump field and comprises an iron yoke, magnetic poles, a temperature connector, a heater, independent windings, electric current connectors and a high temperature superconductive thin piece. A row of magnetic poles are arranged on both the upper surface and the lower surface of the frame-shaped iron yoke; an independent winding is wound around each magnetic pole; the high temperature superconductive thin piece is arranged between two rows of magnetic poles; a sensor is arranged on the high temperature superconductive thin sheet; electric current connectors are connected to ends of the high temperature superconductive thin piece; the temperature connector is connected to the iron yoke; and the heater is arranged in the flux pump and used for heating the high temperature superconductive thin piece. The invention has the advantages that: the work capacity can satisfy a magnet system with the resistance of a superconductive closed loop being within 100microohm, the work ripple within 10<minus6> is realized, and the flux pump can be applied to the superconductive magnetic resonance imaging system as well as the superconductive magnet systems with higher requirements for the stability of the magnetic field, such as a magnetic resonance spectrometer, and the like.

Description

technical field [0001] The invention belongs to the field of superconducting engineering and relates to a high-temperature superconducting magnetic flux pump. Background technique [0002] Since the discovery of high-temperature superconducting materials in 1986, Y (yttrium) series, Bi (bismuth) series and MgB series have been successfully developed for more than 20 years. 2 (magnesium diboride) high temperature superconducting tape. With the development of technology, the performance of these materials is gradually approaching the practical requirements, and the indicators such as critical current and critical magnetic field are constantly improving. Generally, in order to obtain a high stability of the magnetic field, the superconductor must be required to form a closed current loop, so that the current can flow continuously without hindrance in the superconductor without attenuation. But the n index (n-Index) of high temperature superconducting materials is always relat...

Claims

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Application Information

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IPC IPC(8): H01F36/00H01F27/26H01F27/245
CPCY02E40/66Y02E40/60
Inventor 白质明吴春俐
Owner NORTHEASTERN UNIV
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