Abstract: An electric machine includes a machine rotor circumscribed by a machine stator, and having a rotor shaft, rotor stack, and end cap which rotate about an axis. The end cap includes lobes equal in number to a number of pole pairs of the machine rotor. A position sensor assembly has a predetermined alignment with the machine rotor and stator. The sensor assembly includes a sensor rotor formed by the lobes and a sensor stator having a printed circuit board with conductive sine and cosine traces. Machine rotor rotation causes the sensor assembly to output an unmodulated sine and cosine signals to a controller, which then calculates a calibrated reference angle. A magnetic axis of an electrical phase of the machine is aligned with and bisects a peak of the sine trace. A direct axis of the machine rotor aligns with an edge of a lobe.

Abstract: A lubricant supported electric motor includes a stator presenting an stator raceway, and a rotor movable relative to the stator and presenting a rotor raceway disposed in spaced relationship with the stator raceway to define a gap therebetween. A lubricant is disposed in the gap for supporting the rotor relative to the stator. The stator defines at least one hydrostatic support chamber disposed in radially recessed relationship relative to the stator raceway and in fluid communication with the gap. The stator also defines a passageway disposed in fluid communication with the at least one hydrostatic support chamber for providing lubricant to the at least one hydrostatic support chamber and the gap. A flow restriction mechanism is disposed in fluid communication with the passageway for controlling and balancing a supply and pressure of the lubricant in the hydrostatic support chamber.

Abstract: An interior permanent magnet machine includes a stator having electromagnetic windings. The machine also includes a rotor that is disposed concentrically with the stator and is disposed about a rotor axis, the rotor comprising a rotor core defined by a first rotor lamination that is arranged to receive a first magnet set according to a first rotor topology and a second magnet set according to a second rotor topology.

Abstract: A motor control system to drive an alternating-current (AC) motor, including a motor drive with a power circuit and a motor drive controller powered by the power circuit and configured to cause the power circuit to generate a motor voltage; a motor drive contactor having first contacts electrically connected between the power circuit and the AC motor; a bypass contactor having second contacts electrically connected between a line voltage source and the AC motor; and a bypass controller communicatively coupled with the motor drive contactor and the bypass contractor; wherein the motor drive controller is structured to generate a speed reference and to command the bypass controller to connect the AC motor to the line voltage source upon the motor drive controller determining that the speed reference is substantially equal to a line frequency of the line voltage source.

Abstract: An electric machine including a rotor shaft having an inner shaft core with a first composition and an outer shaft portion surrounding at least some of the inner shaft core. The outer shaft portion is fabricated from a material having a different composition than the inner shaft core. For example, the inner shaft core could be fabricated from a material having high thermal conductivity, such as copper, while the outer shaft portion is fabricated from a material with lesser thermal conductivity, but greater strength, for example steel. The two-material shaft with a highly thermally conductive core serves to conduct heat from the interior of the electric machine to the housing, or to an exterior apparatus or structure.

Abstract: The disclosure provides a manufacturing method of a touch sensor unit that includes a tubular insulator housing a plurality of electrodes, and the plurality of electrodes housed in the tubular insulator are prevented from being fixed in a short-circuited state by the resin flowing into the tubular insulator. The manufacturing method of the touch sensor unit includes: a first process of disposing an end of a sensor holder, a resistor, connection wires, and a separator, which are included in a mold part provided at an end of the touch sensor unit, in a mold; and a second process of supplying molten resin into the mold in a state where the tubular insulator housing linear electrodes is pressed from an outer side of the sensor holder in the mold. In the second process, the tubular insulator is pressed within a range where the tubular insulator and an insertion protrusion overlap.

Abstract: Aspects of the invention provide methods and systems for moving a plurality of moveable stages relative to a stator. The stator comprises a plurality of coils shaped to provide pluralities of coil trace groups where each coil trace group comprises a corresponding plurality of generally linearly elongated coil traces which extend across a stator tile. Each moveable stage comprises a plurality of magnet arrays. Methods and apparatus are provided for moving the moveable stages relative to the stator, where a magnet array from a first moveable stage and a magnet array from a second moveable stage both overlap a shared group of coil traces. For at least a portion of the time that the magnet arrays from the first and second moveable stages overlap the shared group of coil traces, currents are controllably driven in the shared coil trace group based on the positions of both the first and second moveable stages. The positions of the first and second moveable stages may be ascertained by feedback.

Abstract: According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R2 <0.84.

Abstract: A structure for assembling a temperature sensor of an annular terminal unit for a drive motor. The structure includes a terminal holder having an annular shape, a temperature sensor fixed to the terminal holder, a plurality of cores radially arranged on a lower surface of the terminal holder, a bobbin inserted into each of the plurality of cores, and a stator coil wound around each of the bobbins. The temperature sensor passes through the terminal holder in a vertical direction of the terminal holder and is inserted between the bobbins around which the stator coils are wound.

Abstract: Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

Abstract: One U-phase coil portion and the next U-phase coil portion in a circumferential direction, one V-phase coil portion and the next V-phase coil portion in the circumferential direction, and one W-phase coil portion and the next W-phase coil portion in the circumferential direction are electrically connected by conductive junctions, respectively.

Abstract: Provided is a generator that converts mechanical energy transmitted through a rotation shaft perpendicularly coupled to a flywheel as an output shaft of an engine into electrical energy. The generator includes: a rotor coupled to the rotation shaft and rotated together when the rotation shaft is rotated; and a stator which has an inner surface positioned adjacent to an outer surface of the rotor and is wound around with a coil, wherein the engine includes: a plurality of blades installed in a side surface of the flywheel facing the rotor and rotated together with the flywheel when the rotation shaft is rotated; and an engine bracket which has a through hole through which the rotation shaft passes, has one side that is opened to accommodate the flywheel therein, and is coupled to the stator, wherein the engine bracket forms an air flow path for guiding air flowed into the flywheel through an inside of the rotor to the stator, when the plurality of blades are rotated.

Abstract: A stator assembly for driving a rotor of an electrical planar motor includes a first arrangement of longitudinal stator layers and a second arrangement of oblique stator layers. The longitudinal stator layers comprise first coil conductors and the oblique stator layers comprise second coil conductors. The second coil conductors interact with second drive magnets to drive the rotor in a first direction, and the first coil conductors interact with first drive magnets to drive the rotor in a second direction, different from the first direction. The longitudinal and oblique stator layers are arranged on top of one another in a third direction, perpendicular to the first and second directions, where the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers have a shared central plane, each being symmetrically arranged with regard to the shared central plane, in the third direction.

Abstract: The invention relates to a stator active part for an electric motor, preferably a permanent-magnet-excited synchronous machine consisting of a hollow-cylindrical yoke, comprising an inner cladding and having a receptacle space, into which a coil support is inserted, wherein the coil support consists of a peripherally-closed, hollow-cylindrical tubular body extending in the axial direction (A) of the yoke, on the outer cladding of said body a plurality of coil holders being formed, wherein a finely-distributed coil is installed on each coil holder.

Abstract: A three-degree-of-freedom bearingless switched reluctance motor excited by a constant current source includes a rotor and a stator. The rotor consisting of a rotating shaft and a rotor core, where a plurality of rotor teeth is uniformly distributed on an outer circumference of the rotor core. The stator includes a stator core, a magnetic isolation ring, an axial suspension winding, and a magnetic conduction ring that are sequentially connected, and axial control cores and annular constant current source windings which are symmetrically arranged on both sides of the stator core. Outer edges of the axial control cores are connected to the magnetic conduction ring, and inner edges extend to the rotor core. The stator core and the magnetic isolation ring both consist of an axial part and a radial part of which an outer end is connected to an inner wall of the axial part.

Abstract: Stators (2) having teeth (4) and electrical windings (5) provided on the teeth (4), wherein the electrical windings (5) comprise graphene and/or carbon nanotubes, are already known. The electrical winding (5) of the stator (2) is produced in a winding process. The electrical winding (5) in the component of an electric machine according to the invention can be produced more easily, in particular further electrical phases can be built into the electrical winding (5) in a simpler and reproducible manner. According to the invention, the electrical windings (5) are each formed as a tubular fabric which encloses the tooth (4) to which it is assigned.

Abstract: A stator assembly for driving a rotor of a planar electrical motor includes longitudinal stator layers with first coil conductors and inclined stator layers with second coil conductors. The first coil conductors extend in an elongated manner in a first direction, and the second coil conductors extend in an elongated manner in a second direction, different from the first direction. The longitudinal and inclined stator layers are arranged on top of one another in a third direction, oriented perpendicularly to the first and second direction. An uppermost and lowermost stator layer of the stator assembly are each formed as a longitudinal stator layer with first coil conductors. The longitudinal stator layers are arranged in the third direction at most on one side next to an inclined stator layer, and the inclined stator layers are arranged in the third direction at most on one side next to a longitudinal stator layer.

Abstract: A rotating electric device comprising: an outer stator (210) comprising an outer stator iron core (211) having a plurality of outer stator winding slots (213) formed on the inner peripheral surface thereof at a predetermined interval in the circumferential direction, and an outer winding (510) wound around an outer stator iron core tooth (218) relatively formed by a pair of outer stator winding slots (213) adjacent to each other; an inner stator (220) comprising an inner stator iron core (221) having a plurality of inner stator winding slots (223) formed on the outer peripheral surface thereof at a predetermined interval in the circumferential direction; and a rotor (300) having, between the outer stator (210) and the inner stator (220).

Abstract: In a first aspect, a stator structure for an electrical machine is provided. The stator structure comprises a circumferential support having an external rim to support a plurality of electrical windings. The circumferential support comprises an air entrance, an air distribution channel and a plurality of axial air openings. The air entrance provides a passage between the air distribution channel and an outside of the stator structure. The air distribution channel extends through a portion of the circumferential support to circumferentially distribute an air flow from the air entrance. The plurality of axial air openings provides a passage between the air distribution channel and an outer side of the external rim to guide an air flow from the air distribution channel to the outer side of the external side.

Abstract: A claw pole stator for a transversal flux motor includes a multiplicity of segments positioned next to one another along a circumferential direction for the annular claw pole stator. Each segment extends from an inner circumferential surface along a radial direction to an outer circumferential surface and is delimited in the circumferential direction by a first side surface and a second side surface and in an axial direction by a first end surface and a second end surface. Each segment is connected by the side surfaces to at least one other segment to form the annular claw pole stator. Segments positioned adjacent each other contact each other by a first contact surface on the first side surface or by a second contact surface on the second side surface and due to the contact surfaces form a form-locking connection in the circumferential direction.