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Title: Magnetic levitation system for moving objects

Abstract

Repelling magnetic forces are produced by the interaction of a flux-concentrated magnetic field (produced by permanent magnets or electromagnets) with an inductively loaded closed electric circuit. When one such element moves with respect to the other, a current is induced in the circuit. This current then interacts back on the field to produce a repelling force. These repelling magnetic forces are applied to magnetically levitate a moving object such as a train car. The power required to levitate a train of such cars is drawn from the motional energy of the train itself, and typically represents only a percent or two of the several megawatts of power required to overcome aerodynamic drag at high speeds.

Inventors:
 [1]
  1. Walnut Creek, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871391
Patent Number(s):
5722326
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
magnetic; levitation; moving; repelling; forces; produced; interaction; flux-concentrated; field; permanent; magnets; electromagnets; inductively; loaded; closed; electric; circuit; element; moves; respect; current; induced; interacts; produce; force; applied; magnetically; levitate; train; car; power; required; cars; drawn; motional; energy; typically; represents; percent; megawatts; overcome; aerodynamic; drag; speeds; power required; magnetic levitation; magnetic force; magnetic forces; electric circuit; permanent magnet; magnetic field; permanent magnets; inductively loaded; /104/

Citation Formats

Post, Richard F. Magnetic levitation system for moving objects. United States: N. p., 1998. Web.
Post, Richard F. Magnetic levitation system for moving objects. United States.
Post, Richard F. Thu . "Magnetic levitation system for moving objects". United States. https://www.osti.gov/servlets/purl/871391.
@article{osti_871391,
title = {Magnetic levitation system for moving objects},
author = {Post, Richard F},
abstractNote = {Repelling magnetic forces are produced by the interaction of a flux-concentrated magnetic field (produced by permanent magnets or electromagnets) with an inductively loaded closed electric circuit. When one such element moves with respect to the other, a current is induced in the circuit. This current then interacts back on the field to produce a repelling force. These repelling magnetic forces are applied to magnetically levitate a moving object such as a train car. The power required to levitate a train of such cars is drawn from the motional energy of the train itself, and typically represents only a percent or two of the several megawatts of power required to overcome aerodynamic drag at high speeds.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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