Research Of Guidance Force Of HTS Maglev System

Since the high-temperature superconducting material was discovered, people have invested a lot of energy to its exploration and research, found that the ceramic material prepared by high-temperature superconductors can be suspended in a stable magnetic field established by permanent magnets, and has a strong magnetic flux Pinning ability, compared with traditional physical suspension, it has low power consumption, without any control, environmental pollution and other properties, making it broad prospects in practical applications.In the high-temperature superconducting magnetic levitation system, the guiding force play an important role in relation to the suspension system performance. This article is based on the guidance force of the suspension system performance studies. In this paper, the methods of experimental high-temperature superconducting magnetic levitation system lateral stability, combined with the theory and previous experience of the high-temperature superconducting magnetic levitation system stability.In the absence of external disturbances, the results show that in Field-cooling:the system twice a guiding force hysteresis loop is not the same degree, the second circular area enclosed by hysteresis loop even smaller, less hysteresis loss; With the suspension height increases, more and more weak hysteresis; zero field cooling results show that:guidance force of the test curve and field cooling curves is the opposite situation, that is to say: guiding force of zero field cooling is negative, but in the field cooling the force is positive; when guiding force of zero field cooling is positive, in the field cooling the force is negative, the return of the guiding force is the larger than process-oriented force; suspension height increase loop area is reduced. Disturbance in the time-varying magnetic field, the field cooling study results show that the system the largest guiding force appear it movement to the superconducting magnet and coil at the junction edge, the greater the AC magnetic field amplitude the greater the loss, frequency has little effect on the guidance force. Finally, there is no constraint, the results show that:permanent magnet being bound guidance force in the absence of the test-oriented is smaller than the binding force of the guiding force 1:and with the suspension height increased, the force curve and the horizontal axis oriented area enclosed by decreasing trend; in transverse process of moving permanent magnets, permanent magnet by an oblique force...