Superconducting electromagnet for levitation and propulsion of a maglev vehicle
AssigneeNorthrop Grumman Corporation
InventorSwarn S. Kalsi
Life of this patent
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Abstract
A superconducting electromagnet for levitation and propulsion of a maglev vehicle running against a rail has a magnetic core having a number of salient poles extending from a surface thereof, thereby forming gaps between adjacent ones of the poles, and facing and in operative proximity with the rail. An excitation coil 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 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.
Claims22
A superconducting electromagnet for levitation and propulsion of a maglev vehicle running against a rail, comprising:
- a. a magnetic core comprising a continuous magnetic core having a plurality of three or more salient poles extending from a surface thereof, thereby forming gaps between adjacent ones of said poles, and facing and in operative proximity with said rail;
- b. a superconducting excitation coil surrounding each of said three or more salient extending poles and positioned in each gap on the side of the pole it surrounds for providing substantially steady state field excitation;
- c. a single cryostat means enclosing each of said three or more superconducting excitation coils and also positioned around said three or more salient extending poles of the magnetic core;
- and
- d. a control coil surrounding each of said three or more salient extending poles and positioned in each gap on the side of the pole it surrounds for responding to disturbances of short duration with a transient field.
Dependencies are inferred from the claim text.