High Temperature Superconducting Magnetic Levitation

8.5 New developments in HTS Maglev vehicle system Ë 315

Fig. 8.55:Total levitation force curves under ZFC and different FCHs.

Fig. 8.56:Central magnetic field density of the PMG of 1.557 T.

Actually, assembly errors, like a material crack, junction gap, misalignment, etc.,
occur with any PMG lines whatever its distance is. To guarantee reasonable homoge-
neity of the whole PMG test line, an authorized patent [56] was proposed and applied
to the assembly process. Finally, as shown in Fig. 8.58, a variation error of the magnetic
field along the test line at the 10-mm WH of about 5% was obtained and could be
accepted in this HTS Maglev vehicle system because the magnetic resistance forces