Zero with the energy supply present stabilized at 50.1 A, which was identical, and the terminal voltage dropped to almost zero when the operating current much reduce than the essential current from the coil. stabilized at each stage. It can be clear that the current only flowed along the spiral HTS layer The final test from 7200 to 8000 s exhibited equivalent functionality to the NI P coil in path plus the resistance from the HTS layer was pretty much null when the steady operating current an overcurrent state, as well as the maximum center Choline (bitartrate) supplier magnetic field flux density stabilized at was far below the crucial current. roughly 55 mT, which was consistent together with the prior test from 0 to 6400 s. The As shown in Figure four, beginning from 2000 s, the energy supply current elevated from overloaded 7-Hydroxymethotrexate Cancer existing triggered the terminal voltage to stabilize at three.3 mV, as the energy provide 70.1 A, with an amplitude of 5 A each and every time at a rate of 0.278 A/s. The magnetic field flux existing remained at 120.three A. density no longer corresponded linearly towards the stabilized operating present but reached a plateau. The maximum center magnetic field flux density that the NI P coil could produce was around 55 mT, along with the average current flowing along the spiral path was 78.6 A, which was estimated by the magnet continual 0.7 mT/A. The overloaded inputElectronics 2021, 10,8 ofcurrent flowed along the radial path [30], which supplied no considerable contribution towards the magnetic field but resulted inside a terminal voltage rise and Joule heat. It was observed that the Joule heat led to no irreversible quenching through the entire test, mainly attributed for the equivalent get in touch with resistivity, which was discovered to become as low as 6.47 cm2 , as well as the smaller volume of generated heat might be dissipated speedily in an LN2 bath. The NI P coil exhibited excellent stability during the overcurrent test from 0 to 6400 s. The subsequent typical charge and sudden discharge test from 6400 to 7200 s indicated that the coil was not degraded during the previous overcurrent test, because the DP coil maintained the same capability of producing a saturated magnetic field and also the coil voltage dropped to almost zero together with the power provide present stabilized at 50.1 A, which was substantially reduced than the critical present of the coil. The final test from 7200 to 8000 s exhibited related functionality to the NI P coil in an overcurrent state, and also the maximum center magnetic field flux density stabilized at around 55 mT, which was consistent together with the previous test from 0 to 6400 s. The overloaded present brought on the terminal voltage to stabilize at three.three mV, because the power supply current remained at 120.3 A. four.two. Voltage Drop in HTS Leads As shown in Figure four, the simulated magnetic field exhibited acceptable consistency with experimental benefits all through the whole test method, whereas the calculated coil voltage exhibited a clear inconsistency from 4564 to 5800 s, for the duration of which the magnetic field remained saturated and fairly stable even as the energy provide existing improved further, but the coil voltage elevated more substantially, compared with all the calculated results. The key discrepancy inside the terminal voltage from 4564 to 5800 s occurred when the power provide present exceeds 120.three A, although there had been no marked fluctuations inside the magnetic field. The extra voltage drop might be attributed for the HTS leads extending from the outermost turn of every single pancake, as depicted in Figure 3, due to the fact the operating current flowing within the HTS le.