An improved passive magnetic bearing (PMB) for rotating machineries and rotating machineries integrating the bearing are configured to counteract the three states dimensional forces applied on them when put in an operating environment having external forces. The improved PMB includes a first ring element having a Halbach array. A second ring element has first and second Halbach arrays extending angularly over respective regions of the second ring. Magnetic interaction from the Halbach array of the first ring with the first and second Halbach arrays of the second ring when the rings are positioned relative each other within an axial operating range defines a combined force curve. This curve can have an axial component matching a predetermined target axial force curve and a radial component matching a predetermined target radial force. In one application, one or more passive magnetic bearings can be integrated in energy producing turbines, whereby the axial component of the force counteracts flow force in a torque generating direction and the radial component counteracts gravitational forces.

Novel configurations of levitating passive magnetic bearing configurations are described. Such configurations can be used for the precise control of the magnitude and sign of the bearing stiffness, thereby facilitating the overall design of the system in ways that are not possible with conventional attractive or repelling bearing elements.

A flywheel kinetic accumulator provides an accumulator assembly, in which a flywheel that is mounted on roll bearings rotates about a rotation axis; the flywheel is axially supported by two sets of magnetic elements (16, 16) facing each other, arranged in two parallel planes, along two circular paths having the same diameter; one set is connected to the accumulator assembly, and the other to the flywheel; the magnetic elements (16, 16) of the two sets are arranged in rotation, such that when a magnetic element (16) of the one set is aligned with a respective magnetic element (16) of the other set along an axis that is parallel to the rotation axis, all other magnetic elements (16, 16) are offset with respect to one another in order to reduce/eliminate the magnetic forces acting in the direction opposite to the rotation direction (V).

A rotating-side magnet has a tubular shape extending in an axial direction and has different magnetic poles in the axial direction. A fixed-side magnet has a tubular shape extending in the axial direction, opposes the rotating-side magnet with a gap in the radial direction, and has magnetic poles radially different from the magnetic poles of the rotating-side magnet. Fixed-side auxiliary members each of which is made of a ferromagnetic material are provided at both axial ends of the fixed-side magnet.

A magnetic drive has a prime mover, having a first magnet array on a first surface thereof, and a rotor, having a second magnet array on an outer surface thereof. The outer surface of the rotor is located adjacent to the first surface of the prime mover such that movement of the prime mover causes rotation of the rotor about an axis of rotation. A support member has a shaft for defining the axis of rotation of the rotor, and having a third magnet array, and the third magnet array cooperates with a fourth magnet array on the rotor to form a magnetic bearing to resist forces on the rotor acting along the axis of rotation thereof.

A magnetic levitation bearing assembly, including: a magnetic levitation bearing, a shell, and a working clearance adjusting device; the magnetic levitation bearing includes a first iron core, a second iron core and a thrust disk; the working clearance adjusting device is arranged between a radial inner periphery of the shell and the thrust disk along the radial direction, and between the shell and the second iron core along the axial direction; an axial end of the working clearance adjusting device is abutted against the second iron core, a void gap is provided between the shell and the second iron core, an adjustment on the magnetic levitation bearing working clearance is made possible by altering the length between two axial ends of the working clearance adjusting device, such that the working clearance is consistent with a design value.

An improved passive magnetic bearing (PMB) for rotating machineries and rotating machineries integrating the bearing are configured to counteract the three states dimensional forces applied on them when put in an operating environment having external forces. The improved PMB includes a first ring element having a Halbach array.

A second ring element has first and second Halbach arrays extending angularly over respective regions of the second ring. Magnetic interaction from the Halbach array of the first ring with the first and second Halbach arrays of the second ring when the rings are positioned relative each other within an axial operating range defines a combined force curve. This curve can have an axial component matching a predetermined target axial force curve and a radial component matching a predetermined target radial force. In one application, one or more passive magnetic bearings can be integrated in energy producing turbines, whereby the axial component of the force counteracts flow force in a torque generating direction and the radial component counteracts gravitational forces.

A weight compensating device includes a stator and a translator. The translator is movable relative to the stator along a movement axis. The translator includes a first permanent magnet arrangement with an axial magnetization. The stator includes a second permanent magnet arrangement that radially surrounds the first permanent magnet arrangement. The stator includes a third permanent magnet arrangement that is arranged coaxially below the first permanent magnet arrangement and that has an axial magnetization that is aligned in inverse fashion with respect to the axial magnetization of the first permanent magnet arrangement. The stator includes a magnetic body arrangement that is arranged coaxially above the first permanent magnet arrangement. The first permanent magnet arrangement, the second permanent magnet arrangement, the third permanent magnet arrangement and the magnetic body arrangement form a magnetic unit and, in interaction with one another, form a compensating force that counteracts the weight acting on the translator.

A roller module includes a roller, a magnetic bearing, a permanent magnet, at least one pair of magnetic coring, and a plurality of gap sensors. The roller has a protrusion and has a cylindrical shape. The protrusion is formed at both outer surfaces of the roller with a stepped portion and has the cylindrical shape. The magnetic bearing is formed at the roller. The permanent magnet is formed at the roller. At least one pair of magnetic coring covers an outer circumference of the protrusion. The gap sensors are formed along an axial direction and a radial direction of the roller.

A magnetic thrust bearing is designed for use in a pumping system that includes a pump driven by a motor through a shaft. The magnetic thrust bearing includes one or more platters that remain stationary with respect to the shaft and one or more thrust discs connected to the shaft and interleaved with the one or more platters. Each of the one or more platters includes a plurality of platter magnets and each of the one or more thrust discs includes a plurality of thrust disc magnets. The magnets on the platters and thrust discs are configured to produce repulsive magnetic forces as the thrust discs approach the platters.