Increase in Levitation Force Due to Multifaceted Arrangement of a Magnetic Levitation System Using HTS Bulk

We studied a magnetic levitation system that uses the magnetic shielding effect of high-temperature superconductor (HTS) bulks. The basic model in our system is composed of a ferromagnetic rail, HTS bulks, and a permanent magnet. To increase the levitation force in the system, we used three basic models and proposed some modified models that featured different arrangements of the three basic models. The modified models were the parallel model, common-rail (NSN) model, and common-rail (SSS) model. First, we explained the three kinds of modified models and then showed the measured levitation forces of these models. The experimental results indicated that the maximum levitation force was 1588 g for the common-rail (NSN) model, 1064 g for the common-rail (SSS) model, and 976 g for the parallel model. The strongest levitation force of the common-rail (NSN) model was more than seven times greater than the maximum levitation force of the basic model.