An analysis on the relation between the seed distance and vertical levitation force for the multi−seeded YBCO using the modified advanced frozen image (MAFI) and experimental methods

HTS-PMG Dizilimlerinin Kritik Akım ve Tuzaklanan Akı Özelliklerinin Nümerik Olarak İncelenmesi

“…One can see from Figure 1 that both at the upper side and right side of the PMGs, the peak values of magnetic flux density distribution curves decrease with increasing distance from the PMG. In addition, one can see that the maximum Br value was obtained as 0.48 T at 2 mm away from the upper surface and 0.55 T at 2 mm away from the right side, for double-PM as consistent with the studies in literature (Ozturk et al, 2019). The bigger Br value at the right side can be attributed to the condensed magnetic flux density on the right surface because of the head-to-head directed PMs.…”

“…This levitation force stems from the induced supercurrents inside the HTS due to the inhomogeneous magnetic field which HTS exposures. This unique property of superconductors is used to develop magnetically levitated transportation (Maglev) systems (Deng et al, 2017;Kusada et al, 2007;Sotelo et al, 2015;Ozturk et al, 2019;Abdioglu et al, 2015), flywheel energy storage systems (Werfel et al, 2012;Basaran and Sivrioglu, 2017), superconducting motors (Hull and Strasic, 2010;Masson and Luongo, 2005;10_Kovalev et al, 2016) and magnetic resonance imaging (MRI) devices (Minervini et al, 2018;Yamamoto et al, 2014), etc. The studies on Maglev systems have increased since the development of first manloaded Maglev vehicle in 2002 by the group of Southwest Jiaotong University in China (Wang et al, 2002).…”

“…Researchers have focused on improving the magnetic levitation and guidance forces of Maglev systems for enhancing the loading capacity and movement stability, respectively. Many studies have been carried out until now to improve the practical applicability potential of Maglev systems via experimental (Deng et al, 2017;Kusada et al, 2007;Abdioglu et al, 2015;Guner et al, 2019), analytical (Ozturk et al, 2019;Ainslie and Fujishiro 2015) and numerical (Ainslie and Fujishiro 2015;Zhang and Coombs, 2012;Ozturk et al, 2012) methods. The electromagnetic behaviour of the above systems should be predicted to figure out the induced current and trapped flux distribution inside the HTS and thus to optimize the design of Maglev systems.…”

Magnetic levitation force and trapped field properties of multiseeded YBCO with triangular arrangement of seeds

“…Maximum B x and B z magnetic flux density values were obtained as .47 and .67 T, respectively. It was determined in a study that, using conventional PMG instead of a single PM enhances the magnetic flux profile and, thus, increases the levitation force more than three times 28 . One can see from Figure 3 that the B z magnetic flux density distribution covers the whole sample with one dominant peak which is important to increase the shielding supercurrents circulating on the sample surface.…”

“…It was determined in a study that, using conventional PMG instead of a single PM enhances the magnetic flux profile and, thus, increases the levitation force more than three times. 28 One can see from Figure 3 that the B z magnetic flux density distribution covers the whole sample with one dominant peak which is important to increase the shielding supercurrents circulating on the sample surface. Also, according to the equation of 𝐹 𝑧 = ∫ 𝑉 𝐽 𝑦 𝐵 𝑥 𝑑𝑉 (where F z is the levitation force, J y is the shielding current circulating in ab plane of the HTSs, and dV is the volume element), the maximum B x peaks at the edges of the sample in Figure 3 indicate that the PMG dimensions are suitable for obtaining maximum levitation force.…”