High temperature superconducting flux pump and method for controlling current waveform of iron core winding

Abstract

The invention provides a high-temperature superconducting magnetic flux pump and a method for controlling the current waveform of its iron core winding, comprising a supporting iron core, a first iron core, a second iron core and a wire winding, wherein the first iron core and the second iron core are both A plurality of supporting iron cores are arranged on both sides of the supporting iron core, a plurality of wire windings are arranged, an installation gap is formed between the first iron core and the second iron core, and the wire winding conducts current and forms a traveling magnetic field with a square wave profile at the installation gap; Applying periodic current waveforms to eight groups of wire windings can generate a traveling square-wave magnetic field on the surface of the high-temperature superconducting tape that moves at a certain rate along the width of the cross-section of the superconducting tape. Convenience and effectiveness of coil charging; L-shaped iron core and S-shaped iron core with narrow cross-section are used to reduce magnetic flux leakage between adjacent winding iron cores, and to generate high magnetic flux density and narrow waveform travel at the installation gap Square wave, improve the charging speed of superconducting coil, and high compactness, small size, simple structure, easy to use.

Description

technical field [0001] The invention relates to the field of superconducting engineering, in particular, to a high-temperature superconducting magnetic flux pump and a method for controlling the current waveform of an iron core winding. Background technique [0002] Superconducting materials can be divided into low-temperature superconducting materials and high-temperature superconducting materials according to their critical temperature. At present, commercialized low-temperature superconducting materials are mainly used in nuclear magnetic resonance imagers, accelerator magnets, etc., but because low-temperature superconducting materials have Low critical transition temperature (Tc<30k), the refrigeration cost is expensive, which makes the application seriously limited; while the high-temperature superconducting material has a high critical transition temperature, low refrigeration cost, and broad application prospects. [0003] The existing Chinese patent with publicat...

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Problems solved by technology

[0004] The inventor believes that the device in the prior art needs to use a heater and a temperature sensor, the structure is complicated, it is inconvenient to use, and there is room for improvement

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