High-temperature superconducting flux pump and iron core winding current waveform control method thereof

Abstract

The invention provides a high-temperature superconducting flux pump and an iron core winding current waveform control method thereof. The high-temperature superconducting flux pump comprises a supporting iron core, a first iron cores, a second iron cores and multiple sets of wire windings; the first iron core and the second iron core are arranged at the two sides of the supporting iron core, a mounting gap is formed between the first iron core and the second iron core, and the wire windings are electrified and form a traveling magnetic field with a square wave profile at the mounting gap; periodic current waveforms are respectively applied to the eight sets of wire windings, so that an advancing square wave magnetic field which moves at a certain speed along the width direction of the section of a superconducting tape can be generated on the surface of the high-temperature superconducting tape, and the convenience and effectiveness of charging a superconducting coil connected with the high-temperature superconducting tape are improved. By adopting an L-shaped iron core and an S-shaped iron core with narrow sections, the magnetic leakage between the adjacent winding iron cores is reduced, the advancing square waves with high magnetic flux density and narrow waveform are generated at mounting gaps, the charging speed of the superconducting coil is improved, and the high-temperature superconducting flux pump is high in compactness, small in size, simple in structure and is convenient 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 its 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 due to the low-temperature superconducting materials have Low critical transition temperature (Tc<30k) is expensive to refrigerate, which severely restricts its application; while high-temperature superconducting materials have a higher critical transition temperature, lower refrigerating costs, and broad application prospects. [0003] The existing Chinese patent with publication numb...

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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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