Passive secondary magnetic damping for superconducting Maglev vehicles

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.322392· OSTI ID:7343731

Atherton, D L; Eastham, A R; Sturgess, K

We analyze a passive magnetic damping scheme for the secondary suspension of a superconducting Maglev vehicle. The unsprung levitation or linear synchronous motor magnets are coupled electromagnetically to short-circuited aluminum damper coils mounted on the underside of the sprung mass. Relative motion between the magnets and the passenger compartment causes a time-dependent flux linkage which induces dissipative currents in the coils. Analysis for the typical Canadian Maglev vehicle design shows that a damping factor of 1 sec/sup -1/ can be obtained with a total coil mass of approximately 100 kg, for a secondary/primary suspension stiffness ratio of 0.2. This scheme appears to offer a design alternative to conventional frictional or hydraulic dampers. (AIP)

• Research Organization: Department of Physics, Queen's University, Kingston, Ontario K7L 3N6, Canada
• OSTI ID: 7343731
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 47:10; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330300* -- Advanced Propulsion Systems-- Electric-Powered Systems
420201 -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CURRENTS
DAMPING
EDDY CURRENTS
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
LEVITATED TRAINS
MAGNET COILS
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETS
PROPULSION
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TRAINS
TRANSPORT
TRANSPORTATION SYSTEMS
USES
VEHICLES