High-gradient high-intensity magnetic field magnetic suspension characteristic test technology

Abstract

The invention discloses a high-gradient high-intensity magnetic field magnetic suspension characteristic test technology. A test platform is provided for suspension characteristics in multiple aspects of a high-gradient high-intensity magnetic field to a superconducting block. A test device is mainly composed of an external magnetic field formed by a superconducting magnet (10) and a test support arranged above the superconducting magnet. The superconducting magnet (10) is internally provided with a coaxial superconducting magnet excitation coil A (12) and a superconducting magnet excitation coil B (13) which are completely identical in structure. When excitation currents with different sizes and directions are piped in the two superconducting excitation coils, a low-intensity magnetic field, a high-intensity magnetic field and magnetic field configurations of which gradient and intensity are variable are generated. Suspension force and suspension force relaxation tests of the high-temperature superconducting block material in the high-gradient magnetic field, the high-intensity magnetic field and the variable magnetic fields can be realized on the same device, and AC loss of the high-temperature superconducting block under AC magnetic disturbance can be tested so that the structure is relatively simple and operation is convenient, and the defects in the certain existing technologies that the test content is single, the structure is complex and operation is complicated can be avoided.

Description

technical field [0001] The invention relates to the field of magnetic levitation, in particular to a high-gradient strong magnetic field magnetic levitation characteristic testing device. Background technique [0002] The unique zero-resistance, Meissner effect and flux pinning characteristics of high-temperature superconducting bulk materials enable it to achieve self-stable levitation in an external magnetic field without energy input. Therefore, high-temperature superconducting bulk materials are widely used in flywheel energy storage, aerospace booster launch and maglev vehicle systems, etc. The levitation characteristics of the high-temperature superconducting maglev system are not only related to the magnetic flux pinning characteristics of the high-temperature superconducting material, but also depend on the strength and distribution of the external magnetic field. Under the existing preparation technology conditions, the pinning performance of high-temperature super...

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Problems solved by technology

At present, few studies have been carried out on the levitation characteristics of maglev systems in the magnetic field of superconducting magnets, but they are basically tested on the levitation characteristics of high-temperature superconducting bulk materials in the low magnetic field of superconducting magnets, which have not yet been fully utilized. Due to the variable, controllable, strong magnetic field, and high gradient characteristics of superconducting magnets, there are few studies on the AC loss of high-temperature superconducting bulk materials in high-gradient magnetic fields and strong magnetic fields of superconducting magnets.

Moreover, most of the existing devices have a single test content and a complex structure.

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