By employing a combination of magnetic forces and those from electrostatic fields, a new stabilizer is able, unlike those employing dynamic effects, to function at any speed with no need for sensors or dynamically generated electrical currents. Embodiments are provided that stabilize the radial, axial and tilt instability. In addition to its use for stabilization, the radial stabilizer described herein also functions as an eccentricity detector.

A magnetic bearing retains a rotatable shaft in a selected position by magnetic coupling between a circular magnet and one or more magnet arrays. Each magnetic coupling completes a magnetic circuit. The magnet arrays focus magnetic flux towards the circular magnet to facilitate magnetic coupling. Magnet arrays configured in Halbach series may be employed. Magnet arrays configured as electromagnets may also be employed. The shaft may be attached either to the circular magnet or the magnet arrays. Shaft rotation does not affect the magnetic circuit, but axial displacement of the shaft disrupts the magnetic circuit and increases magnetic reluctance. Increasing magnetic reluctance inhibits axial displacement. The shaft thereby supports a load while rotating freely, constrained to a selected position by forces of magnetic reluctance. A centering bearing may be employed to maintain gap distance between circular magnet and one or more magnet arrays.

A vehicle drivetrain includes a magnetic bearing. The vehicle drivetrain includes a motor configured to provide a rotational driving force. The rotational driving force is received by a shaft, and the magnetic bearing is configured to support the shaft. The shaft is configured to drive a wheel of the vehicle.

A magnetic bearing assembly (20) comprises a first magnet assembly (34) for generating a first quadrupole magnetic field in a first plane and a second magnet assembly (36) for generating a second quadrupole magnetic field in a second plane. The second plane is arranged parallel to the first plane. The quadrupole magnetic fields exhibit in each case in the planes magnetic field axes arranged at an angle to one another between four poles. A longitudinal axis (A) is defined at right angles hereto by the centres of the quadrupole magnetic fields. At least one diamagnetic element (44) is arranged on the longitudinal axis (A). The first and second magnet assemblies (34, 36) are arranged relative to one another in such a way that the first and the second quadrupole magnetic fields are rotated towards one another about the longitudinal axis (A) by an angular amount which is not a whole-number multiple of 90. Such a bearing arrangement can be used in particular in a magnetic levitation assembly (10) with a lifting assembly (26).

The disclose provides a magnetic levitation gravity compensation device, including: a first permanent magnet, which is cylindrical; a second permanent magnet, which is cylindrical, arranged in the first permanent magnet and radially spaced from the first permanent magnet; and at least one end permanent magnet, which is cylindrical, and is located on at least one of two axial ends of the second permanent magnet and axially spaced from the two axial ends of the second permanent magnet, a center line of the end permanent magnet is configured to coincide with a center line of the second permanent magnet, and a cylinder wall thickness of the end permanent magnet is smaller than that of the second permanent magnet, wherein a magnetization direction of the first permanent magnet is a radial direction, and a magnetization direction of the second permanent magnet and the end permanent magnet is an axial direction.

A magnetically levitated motor includes a stator, a rotor configured to rotate relative to the stator, and a passive radial magnetic bearing configured to support the rotor relative to the stator in a radial direction. An active longitudinal magnetic bearing is configured to selectively position the rotor relative to the stator in an axial direction.

A magnetic bearing device comprise: a support unit which is disposed to be adjacent to a roll shaft and forms a magnetic field toward the roll shaft; and a magnetic force receiving unit which is coupled to the roll shaft and only a part of which faces the support unit is made of a magnetic body, wherein the magnetic force receiving unit magnetizes by mean of a magnetic force.

An energy conversion system includes a stationary structure and a rotatable structure configured to rotate relative to the stationary structure. The system includes at least one blade member mounted to and extending radially outward from the rotatable structure. The blade member is configured to interact with fluid currents to cause the rotatable structure to rotate about an axis of rotation. The system includes a first magnetic bearing component disposed on the rotatable structure and a second magnetic bearing component disposed on the stationary structure. The magnetic bearing components have an aligned position in which the components are axially aligned along the axis of rotation with respect to each other. Axial displacement of the magnetic bearing components from the aligned position generates a magnetic field between the components that provides an axially-directed restoring force between the rotatable structure and the stationary structure to reposition the components to the aligned position.

A method for orienting a timepiece component including ferromagnetic material, where, on both ends of this component, two magnetic fields each attract it onto a pole piece, with an unbalance in the intensity of these fields around this component, in order to create a differential in the forces thereon and to press one of these ends onto a contact surface of one of the pole pieces, and to hold the other end at a distance from the other pole piece. A magnetic pivot includes such a component with two ends. It includes a guide device with surfaces of two pole pieces each generating a magnetic field attracting one of these ends, the magnetic forces exerted on the two ends being of different intensity, in order to attract only one end into contact with only one of these pole piece surfaces.

An electromechanical battery can include a rotary member made at least in part of a first material composition. The rotary member having an interior surface defining an internal core cavity and at least one central chamber. A plurality of permanent magnets supported by the interior surface of the core cavity. A core member can be disposed within the core cavity. At least one levitating magnet can be supported by an exterior surface of the core member. The rotary member levitated with respect to the core member by the permanent magnets and levitating magnet. A second material composition can reside within at least one of the rotary member and the core member. The first member material composition converts through chemical reaction when exposed to the second material composition into a third material composition. The third material composition characterized by energy absorption resisting continued rotation of the rotary member.