Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1996-10-09
1998-08-04
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 74, 318615, H02K 709
Patent
active
057898383
ABSTRACT:
This invention features a three-axis force actuator that axially, radially and rotatably supports a bearing member for frictionless rotation about an axis of rotation generally coincident with a Z-axis. Also featured is a magnetic bearing having such an actuator. The actuator includes an inner member, a magnetic member and a pole assembly having a ring member and four pole extending therefrom. The poles are equi-angular spaced from each other and radially spaced about the Z-axis. The inner member extends along the Z-axis and is a highly magnetic permeable material. The magnetic member is formed about the inner member outer surface, extends along the Z-axis and is configured so one magnetic pole polarity is located at its outer surface and the other polarity pole is located at its inner surface. Preferably, the magnetic member is a radially magnetized permanent magnet. The inner surface of the ring member is magnetically coupled to the magnetic member and a face of each pole is coupled to the bearing member. The magnetic member, the pole assembly, the inner member and the bearing member cooperate to generate a magnetic field that radially and rotatably supports a rotating member secured to the bearing member. The actuator further includes a plurality of electromagnetic coils. Preferably, a coil is formed about each pole and at least 2 coils are formed about the inner member. When energized, the electromagnetic coils generate a modulated magnetic field that stabilizes the rotating member in the desired operational position.
REFERENCES:
patent: 3902659 (1975-09-01), Brinkmann et al.
patent: 4000929 (1977-01-01), Studer
patent: 4077678 (1978-03-01), Studer et al.
patent: 4294493 (1981-10-01), Sindlinger et al.
patent: 4316394 (1982-02-01), Dohogne
patent: 4583794 (1986-04-01), Takahara et al.
patent: 4668885 (1987-05-01), Scheller
patent: 5101130 (1992-03-01), Jayawant et al.
patent: 5200049 (1993-04-01), Stevenson et al.
patent: 5211546 (1993-05-01), Isaacson et al.
patent: 5216308 (1993-06-01), Meeks
patent: 5355042 (1994-10-01), Lewis et al.
Conlin David G.
Daley, Jr. William J.
LaBalle Clayton E.
SatCon Technology Corporation
Williams Timothy A. S.
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