7.6 Three-dimensional modeling and simulations Ë 255Fig. 7.24:Changing curve of the levitation forces on the HTSCs at positions of 5, 10, 15, and 20 mm
above Rail_A (a) and Rail_B (b) with the growth of the total width. The total width is varied from
60 mm to 170 mm.
In this calculation, the total width of both PMGs is a variable parameter with a fixed
height of 30 mm and a fixed width ratio of 1. Fig. 7.24 shows the changing curve of
the levitation forces at positions of 5, 10, 15, and 20 mm above Rail_A and Rail_B with
the growth of the total width from 60 to 170 mm. These figures show that with the
increase of the position, the total width where the MLF appears is shifted from small
to large value, e.g. the levitation forces increase almost linearly with the total width