Abstract
The magnetic levitation transportation system is one of the potential applications of high-Tc superconducting (HTS) maglev system. The prototype HTS magnetic levitation system is composed of one HTS bulk and a permanent magnet railway (PMR). The maglev transportation system performance is influenced by the maximum levitation force, the maximum guidance force and the maximum of external applied magnetic flux density. The applied magnetic field distribution also needs to be considered carefully. In the paper, the magnetic levitation force of cylindrical HTS bulk over PMR is experimentally studied. During the experiment, symmetrical PMR and Halbach PMR are used separately. The levitation force-gap loops of different lateral offset of the HTS bulk above PMRs are obtained experimentally. The results show that the HTS bulk levitation performance is tightly relative to the external applied magnetic field distribution. The maximum magnetic levitation forces of HTS bulk above symmetrical PMR decrease linearly with the lateral offset increasing. When the lateral offset changes from 0 mm to 25 mm, the maximum magnetic levitation forces of HTS bulk above Halbach PMR increase with the lateral offset increasing. When the lateral offset exceeds the center of the Halbach PMR by 25 mm, the maximum force decreases rapidly with the increase of the lateral offset of the bulk sample.
Highlights
The high-Tc superconducting (HTS) bulk can stably levitate above permanent magnet (PM) without any complex controlling system
The results show that the HTS bulk levitation performance is tightly relative to the external applied magnetic field distribution
Many researching works have been done to investigate the performance of the magnetic levitation force of HTS bulk over permanent magnet railway (PMR)
Summary
The high-Tc superconducting (HTS) bulk can stably levitate above permanent magnet (PM) without any complex controlling system. Based on the inherent stability characteristics, HTS bulk has more potential applications in many fields, especially in HTS maglev vehicle [1,2,3,4]. Years the new superconductor’s theory and materials technology development (such as Fe-based superconductor) may enhance the HTS potential for various engineering applications [5]. A most popular application of HTS bulk is magnetic levitation transportation system. The magnetic levitation force is one important factor for the HTS maglev vehicle optimization design. The prototype HTS magnetic levitation transportation system is composed of HTS bulk and permanent magnetic railway (PMR). Many researching works have been done to investigate the performance of the magnetic levitation force of HTS bulk over PMR.
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