Lorentz force magnetic bearing utilizing closed conductive loops

Details Lorentz force magnetic bearing utilizing closed conductive loops Lorentz force magnetic bearing utilizing closed conductive loops

1993-12-06

1995-11-21

Wong, Peter S.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 702

Patent

active

054690064

ABSTRACT:
A magnetic bearing has electromagnets which are actively controlled to maintain a rotor at a prescribed position relative to a stator. Radial and axial bearings are disclosed. In each, conductive loops travel relatively through field zones which are associated with the electromagnets. Sensors provide signals indicative of deviations of the loops from their prescribed circular path, and these signals control the electromagnets selectively to change the magnetic field strengths. A loop current will be induced by the movement of a loop through a magnetic field. This current, in the presence of the magnetic field or fields will exert Lorentz forces on the loop in a radial and/or axial direction. These forces return the rotor to its prescribed position.

REFERENCES:
patent: 3470828 (1969-10-01), Powell, Jr. et al.
patent: 4285553 (1981-08-01), Robinson
patent: 4470644 (1984-09-01), Weissere
patent: 4700094 (1987-10-01), Downer et al.
patent: 4870310 (1989-09-01), Triplett
patent: 5177387 (1993-01-01), McMichael et al.
patent: 5302874 (1994-04-01), Pinkerton

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