Abstract: A terminal connection structure for a rotary machine which electrically connects the rotary machine and a terminal block of a power control unit, comprises a terminal including a layered portion connected to a winding of the rotary machine and formed by layering at least a first conductor portion and a second conductor portion; and a fastening member fastening the terminal and the terminal block of the power control unit.

Abstract: An electrical motor includes a housing, a stator seated in the housing, wherein the stator includes a plurality of stator teeth which extend in the radial direction toward the rotor, a yoke that connects the stator teeth is arranged in such a way that a plurality of first clearances are formed between the housing and the yoke and a plurality of second clearances are formed between the yoke and a free end of the stator teeth, and a coolant guide in contact with at least one axial lateral surface of the yoke, wherein the stator is in interlocking contact with the inner side of the housing.

Abstract: System for controlling at least one active magnetic bearing equipping a rotating machine comprising a rotor and a stator, at least one means for measuring the radial positions of the rotor as a function of the signal from at least one position sensor, and at least two control loops of the active magnetic bearing as a function of the radial positions of the rotor, each control loop of the magnetic bearing being provided with at least one synchronous filter as a function of the rotation speed, and an extended Kalman filter for determining the rotation speed of the rotor with respect to the stator receiving as input, from position sensors, measurements of radial position of the rotor and as a function of measurements of radial position of the rotor performed over a predetermined time at zero rotor rotation speed.

Abstract: The present invention can provide a motor including a shaft, a rotor disposed outside the shaft, a stator disposed outside the rotor, a sensing magnet coupled to the rotor, a circuit substrate disposed above the sensing magnet and including a sensor configured to detect a magnetic flux change due to the sensing magnet, and a cap member which covers the sensor, wherein the circuit substrate includes a first substrate, a second substrate disposed to be spaced apart from the first substrate, and connecting portions connecting the first substrate to the second substrate, the sensor is mounted on the second substrate, and the cap member is disposed to pass through a separating space between the first substrate and the second substrate.

Abstract: Provided is a rhomboid structured triboelectric nanogenerator based on a built-in U-shaped support. The device includes a diamond-shaped bracket and two U-shaped supports. The U-shaped supports is connected with the diamond-shaped bracket through four connecting rods, and the supporting plates of U-shaped supports are sequentially adhered with metal conductor layer and a dielectric material layer, which forms the power generation unit. When the diamond-shaped bracket is closed, the dielectric material layers on the two supporting plates come into contact to produce friction charge; and then subjected to the reverse force after compression of the spring, the two dielectric material layers are separated, so as to generate an induction electric field by the friction charge and form a potential difference. Compared with an existing vibration energy harvester, the advantages will be small space occupation, a long service life, simple fabrication, and a high energy conversion rate.

Abstract: A direct-current generator based on dynamic semiconductor heterojunction and a method for manufacturing the same are provided. Direct-current generator includes a first semiconductor layer (1) and a second semiconductor layer (4); a first electrode (2) is provided on back surface of the first semiconductor layer (1), an insulating layer (3) is provided on front surface of the first semiconductor layer (1); a second electrode (5) is provided on a side of the second semiconductor layer (4); front surface of the first semiconductor layer and a bare side of the second semiconductor layer contact each other and are slidable relative to each other to form a dynamic semiconductor heterojunction direct-current generator; materials of the first semiconductor layer (1) and the second semiconductor layer (4) have different Fermi levels. The generator has high current density, and a generating voltage can increase by designing interface energy band and adding the insulating layer.

Abstract: A wire bonding system is provided including a bond head assembly carrying a wire bonding tool. A wire bonding system also includes a linear motor system for driving the bond head assembly along a first horizontal axis. The linear motor system includes a moving magnet assembly including a magnet track and a plurality of permanent magnets coupled to the magnet track; a coil assembly arranged around the moving magnet assembly, the coil assembly including a plurality of teeth having first slots therebetween, the coil assembly also including a plurality of coils at least partially disposed in at least a portion of the slots; a position encoder system; a damper element positioned between the coil assembly and a base structure of the linear motor system; and a spring element positioned between the coil assembly and the base structure of the linear motor system.

Abstract: The present disclosure describes an electrical machine. The Electrical machine includes a stator, a rotor, a winding fitted to the rotor, and an apparatus for supplying electrical energy to the winding. The apparatus includes a slip ring and a brush assembly including a brush holder and a brush. The slip ring and the brush assembly are arranged in a housing. An annular gap is disposed between the slip ring and the housing. The housing is fluidically substantially sealed in relation to an exterior, and a flow path of air is routed through the housing in a closed arrangement. The housing includes a housing part fluidically connected to the annular gap via a first flow opening and a second flow opening. A flow section of the flow path is routed through the housing part, and leads from the first flow opening to the second flow opening.

Abstract: A rotary electric machine armature that includes a cylindrical armature core and a coil wound around the armature core, wherein: the coil is formed by joining a plurality of segment conductors to each other; the segment conductors have respective conductor side portions that extend along the axial direction; the conductor side portions are provided with respective joint portions; the joint portions have respective facing surfaces; the joint portions of a pair of the segment conductors are joined to each other with the facing surfaces of the joint portions facing each other; and a facing surface of the facing surfaces is formed so as to have a portion that faces a radial direction and so as not to have portions that overlap each other as viewed in the radial direction over the entire facing surface.

Abstract: A self-centering bearing assembly is provided. The bearing assembly includes a magnetic bearing device configured to support a rotating shaft and a magnetic bearing support housing. The magnetic bearing housing has a disc-like shape and multiple tabs extending from an outer diameter portion in an axial direction. The bearing assembly further includes an auxiliary bearing device configured to support the rotating shaft during an auxiliary bearing condition, and an auxiliary bearing support housing. The auxiliary bearing support housing has a disc-like shape with a first diameter portion and a second diameter portion. The first diameter portion has a larger diameter than the second diameter portion. The tabs are configured to couple to the second diameter portion such that the auxiliary bearing support housing is concentric to the magnetic bearing support housing.

Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.

Abstract: Magnetic levitation bearing structure includes a cylinder body, a rotating shaft, a motor stator, a motor rotor, an axial bearing, a radial bearing and a displacement sensing device; the displacement sensing device, the axial bearing stator, and the radial bearing stator are directly fixed on an inner wall of the cylinder body.

Abstract: An encoder includes: a magnet rotatably supported; a control board including a magnetic field sensor that detects a magnetic field produced by the magnet and outputs a signal, and an arithmetic unit that detects rotation of the magnet on the basis of the output of the magnetic field sensor; a magnetic shielding cover made of a soft magnetic material; an encoder bracket used to fix the magnetic shielding cover; a protective cover fixed with being sandwiched between the magnetic shielding cover and the encoder bracket to cover the magnet and the control board to prevent entry of foreign substances; and a sealing member sandwiched between the protective cover and the encoder bracket. The magnetic shielding cover covers the magnet, the control board, and the protective cover, and the sealing member is compressed between the encoder bracket and the protective cover.

Abstract: A device for producing electricity. The device includes a substrate having spaced apart first and second surfaces and doped a first dopant type, first semiconductor material layers disposed atop the first substrate surface and doped the first dopant type, and second semiconductor material layers disposed atop the first semiconductor material layers and doped a second dopant type. A first contact is in electrical contact with the second substrate surface or in electrical contact with one of the first semiconductor material layers. A beta particle source emits beta particles that penetrate into the semiconductor material layers; the beta particle source is proximate the uppermost layer of the second plurality of semiconductor material layers. A second contact is in electrical contact with one of the second plurality of semiconductor material layers. In one embodiment, bi-polar contacts (the first and second contacts) are co-located on each major face of the device.

Abstract: A triboelectric generator includes first and second electrodes spaced apart from each other, a first charging object on a surface of the first electrode facing the second electrode, a second charging object provided between the first charging object and the second electrode, and a grounding unit configured to intermittently interconnect the second charging object and a charge reservoir due to motion of the second charging object. The first charging object is configured to be positively charged due to contact. The second charging object is configured to be negatively charged due to contact.

Abstract: A thrust magnetic bearing includes a stator having a coil, and a rotor. The stator includes main and auxiliary stator magnetic-pole surfaces. The rotor includes main and auxiliary rotor magnetic-pole surfaces facing the main and auxiliary stator magnetic-pole surfaces. When an electric current flows in the coil, an electromagnetic force in an axial direction is generated between the main stator and rotor magnetic-pole surfaces, and an electromagnetic force in a radial direction is generated between the auxiliary stator and rotor magnetic-pole surfaces. When the rotor is displaced in the radial direction, a radial force that acts on the rotor between the auxiliary stator and rotor magnetic-pole surfaces is increased in a direction of the displacement, and a radial force that acts on the rotor between the main stator and rotor magnetic-pole surfaces is increased in a direction opposite to the direction of the displacement.

Abstract: A vibration-driven energy harvesting device includes: a first vibration-driven energy harvesting assembly constituted with a first fixed comb tooth portion and a first movable comb tooth portion that are interdigitated with each other; a second vibration-driven energy harvesting assembly constituted with a second fixed comb tooth portion and a second movable comb tooth portion that are interdigitated with each other; a first output electrode connected to the first vibration-driven energy harvesting assembly; and a second output electrode connected to the second vibration-driven energy harvesting assembly, wherein: an output of the first vibration-driven energy harvesting assembly is different from an output of the second vibration-driven energy harvesting assembly.

Abstract: A brush apparatus for a slip ring system of a current-energized electric machine for a motor vehicle is provided for supplying a rotor of the electric machine with current, wherein the brush apparatus is securable to a component of the electric machine that is mounted in fixed relation to the rotor. The brush apparatus includes a brush carrier having a cartridge-type holder and a brush arranged in the cartridge-type holder and forming a sliding contact with a slip ring of the slip ring system. The brush apparatus also includes a retaining device, formed from an electrically insulating material for retaining the brush carrier, which has a securing region for securing the brush apparatus on the component, and a heat-conducting core enclosed in the retaining device, which is exposed for the purpose of heat dissipation at least in the securing region of the retaining device that is couplable to the component.

Abstract: A slip ring body for electrically contacting an asynchronous machine includes first and second slip rings rigidly connected to one another, with at least two conductor bars fastened to each of the slip rings. At least one of the slip rings has a recess for passage of the conductor bars of the other slip ring and defining around the recess a first region in which air is at least partially present and which has a magnetic conductivity that is lower than a magnetic conductivity in a second region in which the conductor bars to the one slip ring are fastened, or which second region is embodied for contacting with an energy-transmitting brush. The first and second regions are not made of copper. The recess defines an opening cross-sectional area which is greater than a cross-sectional area of the conductor bars fastened to the one slip ring.

Abstract: A power generation body includes a first member, a second member, and a cushioning material. The first member includes a first insulating film that forms a first surface. The second member includes a second insulating film that forms a second surface that opposes the first surface and comes into contact with the first surface. The cushioning material is arranged on a side opposite to the first surface of the first member. The first member and the second member are configured such that a real contact surface area between the first surface and the second surface area changes according to pressure applied to the first member and the second member, and one of the first insulating film and the second insulating film is positively charged and the other is negatively charged due to the real contact surface area changing.