Conical bearingless motor/generator
First Claim
Patent Images
1. A conical bearingless motor/generator comprising:
- a rotatable part having an axis of rotation; and
a stationary part having one or more windings each producing both a drive field and a control field, the drive field being operable to exert a torque on the rotatable part that transfers energy between the rotatable part and the stationary part, the control field is operable to exert a force on the rotatable part to levitate the rotatable part, the force being directed at an angle greater than 0° and
less than 90°
relative to the axis of rotation of the rotatable part.
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Abstract
A bearingless motor/generator comprises a rotatable part and a stationary part. The rotatable part is adapted to be rotated about an axis of rotation with respect to the stationary part. The stationary part has one or more windings for producing a drive field and a control field. The drive field is adapted to exert a torque on the rotatable part to transfer energy between the rotatable part and the stationary part. The control field is adapted to exert a force on the rotatable part to levitate the rotatable part. The force is adapted to be directed at an angle greater than 0° and less than 90° relative to the axis of rotation of the rotatable part.
57 Citations
19 Claims
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1. A conical bearingless motor/generator comprising:
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a rotatable part having an axis of rotation; and
a stationary part having one or more windings each producing both a drive field and a control field, the drive field being operable to exert a torque on the rotatable part that transfers energy between the rotatable part and the stationary part, the control field is operable to exert a force on the rotatable part to levitate the rotatable part, the force being directed at an angle greater than 0° and
less than 90°
relative to the axis of rotation of the rotatable part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A conical bearingless motor/generator comprising:
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a stationary part; and
a rotatable part, the stationary part and the rotatable part having an axis of rotation such that the combination of the stationary part and the rotatable part form a minimum of three pole pairs, the stationary part having one multi-phase winding per pole pair capable of providing both a torque on the rotatable part and a force on the rotatable part to levitate the rotatable part. - View Dependent Claims (19)
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Specification