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US 10,208,431 B1Granted
Permanent magnet maglev using passive, low-frequency electromagnetic stabilization
OwnerJohn Van Rosendaleinventor
Life of this patent
Estimating the term…
Abstract
A magnetic levitation system includes a guideway and a vehicle. The guideway has ferromagnetic yokes and induction coils. The vehicle has levitation magnets for magnetic interaction with the ferromagnetic yokes wherein the vehicle levitates relative to the guideway. The vehicle has stabilization magnets coupled thereto for electromagnetic interaction with the induction coils as the vehicle travels along the guideway. Each stabilization magnet is a permanent magnet with a two-dimensional pattern of poles alternating in polarity in a first dimension and a second dimension.
Claims22
A magnetic levitation system, comprising:
- a guideway having ferromagnetic yokes mounted in said guideway and having induction coils mounted in said guideway;
- a vehicle having levitation magnets mounted thereon for magnetic interaction with said ferromagnetic yokes wherein said vehicle levitates relative to said guideway for travel along said guideway in a direction of travel;
- said vehicle having a plurality of stabilization magnets coupled thereto for electromagnetic interaction with said induction coils as said vehicle travels along said guideway;
- and
- each of said stabilization magnets being a permanent magnet with a two-dimensional pattern of poles alternating in polarity in a first dimension and a second dimension, wherein said two-dimensional pattern of poles have a horizontal spacing between adjacent poles of said permanent magnet measured along said direction of travel and a vertical spacing between adjacent poles of said permanent magnet measured perpendicular to said direction of travel, and wherein said horizontal spacing is in the range of approximately 3 to approximately 14 times greater than said vertical spacing.
2 more elements
A magnetic levitation system, comprising:
- a guideway having ferromagnetic yokes mounted in said guideway and having induction coils mounted in said guideway;
- a vehicle having levitation magnets mounted thereon for magnetic interaction with said ferromagnetic yokes wherein said vehicle levitates relative to said guideway for travel along said guideway in a direction of travel;
- said vehicle having a plurality of stabilization magnets coupled thereto for electromagnetic interaction with said induction coils as said vehicle travels along said guideway;
- and
- each of said stabilization magnets being a permanent magnet with a two-dimensional pattern of poles alternating in polarity in a first dimension and a second dimension, wherein said poles are disposed at an acute angle between 4 and 18 degrees with respect to said direction of travel.
2 more elements
A magnetic levitation system, comprising:
- a guideway having ferromagnetic yokes mounted in said guideway and having induction coils mounted in said guideway, said induction coils disposed along said guideway as pairs of said induction coils, each of said pairs defined by two of said induction coils arranged in an opposing spaced-apart relationship and electrically coupled to one another for null-flux stabilization;
- a vehicle having levitation magnets mounted thereon for magnetic interaction with said ferromagnetic yokes wherein said vehicle levitates relative to said guideway for travel along said guideway in a direction of travel;
- said vehicle having a plurality of stabilization magnets coupled thereto for electromagnetic interaction with said pairs of said induction coils as said vehicle travels along said guideway;
- each of said stabilization magnets being a permanent magnet with a two-dimensional pattern of poles alternating in polarity in a first dimension and a second dimension;
- and
- said two-dimensional pattern having a horizontal spacing between adjacent poles of said permanent magnet measured along said direction of travel and a vertical spacing between adjacent poles of said permanent magnet measured perpendicular to said direction of travel;
- wherein said horizontal spacing is in the range of approximately 3 to approximately 14 times greater than said vertical spacing, and wherein an operating frequency of said induction coils does not exceed approximately 300 Hz as said vehicle travels along said guideway.
4 more elements
A magnetic levitation system, comprising:
- a guideway having ferromagnetic yokes mounted in said guideway and having induction coils mounted in said guideway;
- a vehicle having levitation magnets fixedly mounted thereon and in a fixed relationship thereto for magnetic interaction with said ferromagnetic yokes wherein said vehicle levitates relative to said guideway for travel along said guideway in a direction of travel;
- said vehicle having a plurality of stabilization magnets fixedly mounted thereon and in a fixed relationship thereto for electromagnetic interaction with said induction coils as said vehicle travels along said guideway;
- and
- each of said stabilization magnets being a permanent magnet with a two-dimensional rectangular pattern of poles alternating in polarity in a first dimension and a second dimension, wherein said poles are disposed at an acute angle between 4 and 18 degrees with respect to said direction of travel.
2 more elements
A magnetic levitation system as, comprising:
- a guideway having ferromagnetic yokes mounted in said guideway and having induction coils mounted in said guideway;
- a vehicle having levitation magnets mounted thereon for magnetic interaction with said ferromagnetic yokes wherein said vehicle levitates relative to said guideway for travel along said guideway in a direction of travel;
- said vehicle having a plurality of stabilization magnets coupled thereto for electromagnetic interaction with said induction coils as said vehicle travels along said guideway;
- each of said stabilization magnets being a permanent magnet with a two-dimensional pattern of poles alternating in polarity in a first dimension and a second dimension;
- and
- said guideway terminating in a bi-directional railroad-track to maglev-guideway transition system that includes
- a portion of a railroad track having two parallel rails defining a first axis of travel,
- a portion of said guideway defining a second axis of travel, said portion of said guideway being adjacent to said two parallel rails of said portion of said railroad track, wherein a non-zero elevation grade is defined between said first axis of travel and said second axis of travel, and
- a support structure coupled to said portion of said railroad track for seesaw adjustment of a height of each of said two parallel rails based on a differential load applied to said two parallel rails.
6 more elements
Dependencies are inferred from the claim text.