Abstract: The present disclosure relates to a magnetic liquid sealing device. When a rotating shaft of the device axially vibrates, an outer ring of a bearing may not be provided with a rim, and a J-shaped bush and U-shaped sleeve ring can have relative displacement in an axial direction. When the rotating shaft radially vibrates, the U-shaped sleeve ring may deviate radially to allow sealing gaps, so as to prevent a bump between a pole shoe and J-shaped bush. Under action of a support spring and axial spring, sealing rings can be pressed to allow for sealing, and the U-shaped sleeve ring may not be in direct contact with an end cap, so as to avoid face friction.

Abstract: A vertical magnetic power generator has a base, a driving shaft vertically mounted in the base, at least one electricity generation module mounted in the base and connected with the driving shaft, and multiple magnetic levitation modules mounted in the base and connected with the driving shaft. Each magnetic levitation module includes a magnetic ring and a conical magnetic block disposed in the magnetic ring. The conical magnetic block and a conical hole of the magnetic ring both taper off from top to bottom. The magnetic levitation modules provide upward axial magnetic levitation forces and radial damping forces exerting toward the driving shaft to allow the driving shaft to balance a total weight applied on the driving shaft. Thus, the driving shaft is able to be vertically levitated in the base magnetically and stably rotates at high speed almost without friction loss and without shifting or vibrating.

Abstract: A method includes forming elongated magnetic flux carrier portions in magnetically conductive sheets by cutting elongated magnetic flux barriers including one or more relief features into the magnetically conductive sheets, such that the magnetic flux barriers are separated from each other in radial directions of the magnetically conductive sheets. The method includes inserting or forming non-magnetic posts into the magnetic flux barriers such that each of the non-magnetic posts is elongated in a different radial direction of the radial directions from a first magnetic flux carrier portion to a second magnetic flux carrier portion of the magnetic flux carrier portions on opposite sides of at least one magnetic flux barrier; and forming at least part of a rotor for an electric machine assembly using the magnetically conductive sheets having the magnetic flux carrier portions, the non-magnetic posts, and the magnetic flux barriers.

Abstract: A linear motor includes an armature that includes a coil and a core made of a soft magnetic material, and a field magnet that includes a permanent magnet generating a magnetic field for the armature. One of the armature or the field magnet is a mover and the other of the armature or the field magnet is a stator, and the stator includes a first section and a second section. The armature and the field magnet are arranged such that the mover is interposed between the first and second sections, and at least one of the armature or the field magnet is configured to have an asymmetrical property between first and second magnetic actions. The first magnetic action is caused by the permanent magnet between the mover and the first section, and the second magnetic action is caused by the permanent magnet between the mover and the second section.

Abstract: Disclosed herein is an electrical angle calculation device including a signal value extraction section that extracts a signal value that monotonously increases or monotonously decreases with respect to an electrical angle of a motor from output signal values of a plurality of Hall sensors embedded in a stator of the motor, and an electrical angle calculation section that calculates the electrical angle from the extracted signal value.

Abstract: Systems and methods of forming articles using electromagnetic radiation are disclosed. In some aspects, the system includes a plurality of forming modules movably mounted relative to an infeed mechanism. The infeed mechanism is configured to supply pre-form articles to the plurality of forming modules, and each of the plurality of forming modules includes a multi-segment mold disposed about an electromagnetic coil. The electromagnetic coil is configured to impart an electromagnetic force on the pre-form articles when supplied with electrical energy that urges the pre-form articles into contact with the multi-segment mold to produce the formed containers.

Abstract: A cryogen-free high-temperature superconductor undulator structure is provided. The superconductor undulator structure includes a magnetic core body and a coil structure. The magnetic core body includes a first and a second half magnetic pole arrays that are vertically aligned, a plurality of first winding cores in the first half magnetic pole array, and a plurality of second winding cores in the second half magnetic pole array. The coil structure is wound on the first winding cores and the second winding cores of the magnetic core body. The coil structure includes a plurality of first superconductor tapes in contact with each of the first winding cores and each of the second winding cores, and a plurality of second superconductor tapes, each of the second superconductor tapes is in contact with two adjacent first superconductor tapes. A method of manufacturing a cryogen-free high-temperature superconductor undulator structure is also provided.

Abstract: Systems and methods for forming a magnetostatic MEMS switch include forming a movable beam on a first substrate, forming the electrical contacts on a second substrate, and coupling the two substrates using a hermetic seal. A shunt bar on the movable plate may close the switch when lowered onto the contacts. The switch may generally be closed, with the shunt bar resting on the contacts. However, a magnetically permeable material may also be inlaid into the movable plate. The switch may then be opened by placing either a permanent magnet or an electromagnet in proximity to the switch.

Abstract: A magnet system for use in a nuclear magnetic resonance (“NMR”) apparatus includes a first magnet and a second magnet located on a backplane to form a gap therebetween, wherein the first magnet and the second magnet are each shaped to form trapezoidal prisms with dimensions selected to optimize a magnetic field at a target region in space external to the magnet system.

Abstract: A superconducting coil module includes: a first coil composed of a superconducting wire material wound multiple times; and a first heating device coupled to one surface of the first coil and including at least one first heating pattern controlling a threshold current for each turn of the first coil as a minimum threshold current, wherein at least one first heating pattern is disposed on a path according to a predetermined ratio between the inner and outer boundaries of the first coil.

Abstract: A dual-rotor machine comprising a dual rotor support structure rotatably connected to a frame. A stationary stator is disposed between the rotors and is fixed to the frame. An inner rotor and outer rotor, each comprising a permanent magnet Halbach array, are coaxially disposed with the stator and are rotable about the stator. In this configuration, the inner rotor channels its magnetic flux to its outside, while the outer rotor channels its magnetic flux to its inside. The magnetic flux density at the stator for the dual-rotor machine can be as high as 2 Tesla or higher for high-grade neodymium-iron-boron permanent magnet material, and the stored magnetic energy for conversion to mechanical or electrical energy available to the stator may be at least 0.5 kJ/m. The rotor Halbach arrays may comprise monolithic permanent magnets with continuously variable magnetic field direction.

Abstract: Magnet array structure includes a first linear magnet array having a plurality of consecutively arranged first Halbach arrays and a second linear magnet array having a plurality of consecutively arranged second Halbach arrays. The first linear magnet array, from a first end of the magnet array structure to a second end of the magnet array structure, having magnetic flux orientations rotating in a first direction, and the second linear magnet array, from the first end of the magnet array structure to the second end of the magnet array structure, having magnetic flux orientations rotating in a second direction that is opposite the first direction. The first linear magnet array is arranged parallel to the second linear magnet array so that, between the first and second ends of the magnet array structure, the first Halbach magnetic arrays are linearly offset from the second Halbach magnetic arrays.

Abstract: A control device includes a moving portion, a magnetic element coupled to the moving portion, at least one magnetic sensing circuit responsive to magnetic fields, and at least one magnetic flux pipe structure. The magnetic element may comprise alternating positive and negative sections configured to generate a magnetic field. The magnetic element may be any shape, such as circular, linear, etc. The magnetic sensing circuit may be radially offset from the magnetic element, and the magnetic flux pipe structure may be configured to conduct the magnetic field generated by the magnetic element towards the magnetic sensing circuit. The magnetic element may generate the magnetic field in a first plane, and the magnetic sensing may be responsive to magnetic fields in a second direction that is angularly offset from the first plane. The magnetic flux pipe structure may redirect the magnetic field towards the magnetic sensing circuit in the second direction.

Abstract: Disclosed is a magnetic housing assembly which may have a housing body, a first capping structure; a second capping structure; a water-tight chamber defined by the first capping structure and the second capping structure; a ratcheting face; a magnet enclosed within the water-tight chamber; at least one ridge on the perimeter of the housing body, where the magnet can flip to reverse polarity within the water-tight chamber, where the ratcheting face is configured to allow adjustment of the assembly when connected with another structure also having a ratcheting face. Also disclosed is a system including a structure configured to house the plurality of magnetic housing assemblies while exposing a surface of the magnetic housing assemblies.

Abstract: An improved magnetic propulsion system with a Linear Polarity Switching (LPS) series having a plurality of magnets that are magnetically and polarity orientated structurally and arranged to form forces of magnetic fields and polarity orientations of antithetical flux actions at one end that attract and repel at the other end against London Spinal Assemblage (LSA) configurations having a plurality of magnets that are magnetically and polarity orientated structurally and arranged to form forces of magnetic fields and polarity orientations of flux that attracts and repels the connections to enable a train or a load as a retrofit, along the XZ-plane of the fixed LPS series to have initial momentum at rest, continuous object acceleration or deceleration, and braking.

Abstract: An active feedback controller for a power supply current of a no-insulation (NI) high-temperature superconductor (HTS) magnet to reduce or eliminate the charging delay of the NI HTS magnet and to linearize the magnet constant.

Abstract: A superconducting magnetic levitation train includes a frame, an arm, a first support member, a Dewar, a permanent magnet track, an iron core, a coil, a DC power supply system, and a second support member. the arm is arranged on a bottom of the frame; the Dewar 4 with bulk superconductors or superconducting magnets inside is arranged on the bottom of the frame 1; a bottom of the first support member and the second support member is fixedly arranged on a ground; the permanent magnet track is arranged on the first support member; the iron core is arranged on the second support member; the coil is sleeved on the iron core; and levitation, guidance and propulsion integrated superconducting magnetic levitation train further comprises a direct current (DC) power supply system to supply power to the coil.

Abstract: Various embodiments of a system and method for controlling the shape, subdivision, recombination, movement and object manipulation of ferrofluid material in addition to pumping fluids with ferrofluid material using external electromagnetic fields are disclosed herein.

Abstract: The disclosure describes a magnetic circuit assembly that includes a magnet assembly and an excitation ring. The magnet assembly defines an input axis and includes a pole piece and a magnet underlying the pole piece. The excitation ring includes a base and an outer ring positioned around the magnet assembly. The base includes a platform layer underlying the magnet and a base layer underlying the platform layer. The outer ring overlies the base layer. An inner portion of the outer ring faces the magnet assembly and an outer portion of the outer ring is configured to couple to an outer radial portion of a proof mass assembly. The pole piece and the platform layer include a high magnetic permeability material.

Abstract: A permanent magnet actuation mechanism may include a first permanent magnet magnetized along a first axis and rotatable about a first rotational axis perpendicular to the first axis, a second permanent magnet magnetized along a second axis and rotatable about a second rotational axis perpendicular to the second axis. The first rotational axis is parallel with the second rotational axis. The mechanism further comprises a mounting structure configured to position the first permanent magnet at a first distance from the second permanent magnet along a main axis perpendicular to the first rotational axis and the second rotational axis.