| 摘要 |
A superconducting electromagnet for levitation and propulsion of a maglev vehicle running against a rail (23) has a magnetic core (10) having a number of salient poles (11, 12, 13, 14, 15, 16) extending from a surface of the core and forming gaps (17) between adjacent ones of the poles, and facing and in operative proximity with the rail. An excitation coil (24, 25, 26, 27, 28, 29) surrounds each pole and is positioned in the gaps on each side of the pole. A cryostat accommodates the excitation coil and is positioned in the gaps between the conducting coil and the core. A control coil (30, 31, 32, 33, 34, 35) surrounds each pole and is positioned in the gaps on each side of the pole for responding to fast disturbances of short duration with a transient current. |
