6.14 Permanent magnet guideway Ë 191Fig. 6.50:Measured and calculated results of the magnetic field distribution of the PMG along the
transverse and the vertical direction. Calculated 1 and calculated 2 correspond to the finite element
method and the equivalent current method, respectively. [35, 43]
Tab. 6.11:Measured magnetic flux densities at PMG center along the vertical direction.
Height (mm) MeasuredBz(T) Height (mm) MeasuredBz(T)
0 1.2125 20 0. 432
5 0.8388 25 0. 363
10 0.6481 30 0. 3089
15 0.5209
Fig. 6.51:Photograph of the PMG. The surface
concentrating magnetic flux density of the PMG is up
to 1.2 T. The magnetic flux density is 0.4 T at 20-mm
gap from the surface of the PMG.The PMG (Fig. 6.51) has a length of 920 mm and width of 178 mm. The cross-section area
of the PMG is 76.2×76.2× 2 =116 cm^2. The surface magnetic field of a single permanent
magnet is about 0.45 T, and the surface concentrating magnetic flux density of the PMG
is up to 1.2 T. The magnetic flux density is 0.4 T at 20 mm gap from the surface of the
PMG which is close to the surface magnetic field of the NdFeB PM cylinder. The PMG
is used not only in the measurement of HTS Maglev properties but also in the HTS
Maglev vehicle system. [1]