Abstract: A hybrid power generating device can include: a first substrate; a lower electrode layer disposed on the first substrate; a piezoelectric layer disposed on the lower electrode layer, and formed of a complex in which an inorganic piezoelectric material and an organic polymer matrix are mixed; a spacer disposed on the piezoelectric layer; an upper electrode layer disposed on the spacer and configured to rub against the piezoelectric layer so as to be charged along with the piezoelectric layer; and a second substrate disposed on the upper electrode layer.

Abstract: Provided is a stator that can easily attach a coil to a tooth and that can reduce concentration of stress generated in the core during operation. The stator includes a plurality of divided cores aligned in a circumferential direction. Each divided core includes a tooth, and a divided back yoke extending from an end on a radially outside of the tooth to a first circumferential side. A radial width of the divided back yoke is smaller than or equal to a circumferential width of the tooth. A connecting surface is arranged at an end on a second circumferential side of the divided yoke, the connecting surface being a plane or a convex surface extending from a side surface on the second circumferential side of the tooth to an outer circumferential surface of the divided back yoke.

Abstract: An electric machine is provided that includes a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The rotor core is configured so that the electric machine satisfies predetermined operating parameters. In one embodiment, the electric machine is coupled with an engine through a belt drive train and provides cranking (engine starting), regeneration and torque assist modes.

Abstract: An electric machine for starting an internal combustion engine, comprising a housing (10) having at least one sealing device (14) which seals an interior (10a) of the housing with respect to the surroundings of the housing (10), and at least one pressure reduction device (1), wherein the at least one pressure reduction device (1) is embodied so as to be moveable in a translatory fashion relative to the at least one sealing device (14) in order to form, in the case of an overpressure in the interior (10a) of the housing, at least one venting duct via which an at least partial reduction in pressure is ensured.

Abstract: An electric machine includes a housing having an air inlet opening near a front or rear end of the housing for aspirating air, and an air outlet opening for expelling air. The housing accommodates a stator, and a rotor is mounted in the housing for rotation about an axis of rotation. Mounted on a side of the housing in parallel relation to the axis of rotation is a hood-like attachment to cover the air inlet and outlet openings so that air expelled from the housing through the air outlet opening is fed back to the air inlet opening. Disposed in the stator are pipes for flow of a liquid cooling medium to directly cool the stator during operation. At least some of the pipes project beyond the stator toward the front and rear ends, so that during operation heat is removed by the pipes from air flowing in the housing.

Abstract: A first power control system has a first to a third motor wires and a second power control system has a fourth to a sixth motor wires. The first to the third motor wires and the fourth to the sixth motor wires are located on a concentric circle of a center of a magnet and located to be symmetrical to each other with respect to the magnet. The first and the third motor wires, which are located at both sides of the second motor wire in a circumferential direction of an electric motor portion, are asymmetrically arranged with respect to the second motor wire. The fourth and the sixth motor wires, which are located at both sides of the fifth motor wire in the circumferential direction, are asymmetrically arranged with respect to the fifth motor wire. As a result, a size of an electrical driving device can be made smaller.

Abstract: A vibration motor is provided in the present disclosure. The vibration motor includes a stationary part, a vibration part and an elastic connector. The stationary part includes a housing providing an accommodating space. The vibration part is suspended within the accommodating space by the elastic connector. The stationary part comprises a coil, and the vibration part comprises a first magnet set and a second magnet set; the first magnet set and the second magnet set are respectively disposed at two opposite sides of the coil to generate a closed magnetic loop. The first magnet set includes a first left magnet, a first middle magnet and a first right magnet, the second magnet set includes a second left magnet, a second middle magnet and a second right magnet which are opposite to the first left magnet, the first middle magnet and the first right magnet respectively.

Abstract: A rotary electric machine in accordance with the invention includes: a case including a front-side housing and a rear-side housing; a rotor having a field winding placed in the case; a stator having an armature winding placed in the case; a power module for energizing armature current that flows in the armature winding; a heat sink, on which the power module is mounted, for cooling the power module; a field circuit module for controlling field current that flows in the field winding; and a control circuit for controlling the operation of the power module and the field circuit module, wherein the power module includes a pair of power modules mounted opposite to each other on a base surface of the heat sink, and the heat sink includes a plurality of cooling fins placed thereon.

Abstract: Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.

Abstract: A rolling-element bearing for an electromagnetic solenoid includes a hollow cylindrical cage with a plurality of spherical pockets formed around a first circumference and a second circumference of the cage. The pockets around the first circumference are offset from the pockets around the second circumference. Spherical rolling elements are provided in the spherical pockets and are captured for free rotation in the first pockets and second pockets.

Abstract: A cooling assembly is disclosed for use with an electric machine having a housing, a shaft rotatably supported within the housing, a rotor operatively coupled to rotate with the shaft, and a stator annularly surrounding the rotor. The cooling assembly may have an axial passage formed along a longitudinal axis of the shaft and configured to direct cooling oil from a first end of the shaft towards a second end of the shaft opposite the first end of the shaft. The cooling assembly may also have an angled passage fluidly connected to the axial passage and configured to redirect the cooling oil towards a gap between an outer surface of the rotor and an inner surface of the stator. The cooling assembly may further have an arcuate groove formed along the outer surface of the rotor and configured to sling the cooling oil towards opposing ends of the rotor.

Abstract: Provided is a synchronous reluctance rotating electrical machine that has superior rotor strength, and that can be manufactured at low cost. Asynchronous reluctance motor has a rotor wherein a multiple of quadrature axes are formed in a circumferential direction. The rotor has two neighboring quadrature axis holes sandwiching a center bridge in the circumferential direction of the rotor in order to form one quadrature axis. The quadrature axis holes communicate with an outer periphery of the rotor on a side opposite to that of the center bridge. The center bridge is located on the outer side, in a radial direction of the rotor, of an inscribed circle of the multiple of quadrature axis holes. Also, the rotor 3 has a direct axis projection protruding in the direction of a direct axis between two neighboring quadrature axes.

Abstract: Provided is an inverter-integrated electric compressor which has improved assembly properties and assembly precision, and improved productivity. In this inverter-integrated electric compressor, a P-N terminal is provided on the inverter device main substrate, and a power source-side cable can be connected to the P-N terminal by inserting a connector provided at one end; by arranging and mounting multiple high-voltage electric components on the back of the main substrate in the area where the P-N terminal is arranged, a filter circuit is provided on the main substrate. The multiple high-voltage electric components are integrally coupled via fitting units provided on the housing cases of one another and are arranged in a prescribed position on the back of the main substrate with a positioning means provided on one of the housing cases.

Abstract: The present disclosure relates to an electromagnetic actuator of the type producing a force due to the current that remains substantially constant over the entirety of its useful travel Y and that has a low force in the absence of current, including at least one stator structure, at least one electrical supply coil, and a moving member, the stator structure having, on the one hand, a central pole running perpendicular to the direction of the travel Y and having a width YC1 in the direction of the travel and terminating at its end in a width YC2 that is greater than or equal to the travel Y of the moving member, YC2 being greater than YC1, and, on the other hand, two lateral poles having widths YL1 in the direction of the travel and terminating at their end in a width YL2 greater than YL1.

Abstract: A motor includes a shaft, a rotor magnet, an armature, an upper bracket, a lower bracket, and a fixing member. An insulator includes magnetic pole tooth insulating portions, each of which covers a separate one of magnetic pole teeth, and a core back insulating portion configured to cover at least portions of upper and lower end surfaces of a core back. A stator core includes a fixing member arranging portion. The core back insulating portion includes a core back insulating projecting portion configured to project in an axial direction away from a surface covering the core back, and including a radially inner surface located radially inward of a radially inner end of the fixing member arranging portion. The core back insulating projecting portion includes a cut portion at a position radially opposed to the fixing member.

Abstract: An electrostatic energy-harvesting device is provided. The electrostatic energy-harvesting device with a 3-dimensional cone shape includes a first structure including a first substrate having a cone shape with an opened lower surface and a hollow inside, and a first rubbing electrified body disposed on an outer surface of the first substrate; a second structure including a second substrate having the same shape as the first substrate and a second rubbing electrified body which includes a material having opposite electrification characteristics to the first rubbing electrified body and disposed on an inner surface of the second substrate; and leader lines connected to each of the first rubbing electrified body and the second rubbing electrified body.

Abstract: A stator for an electric machine includes a cylindrical stator body having several stator slots. A first coil is inserted into the stator slots for a first phase, where the first coil has a first coil end on at least one face of the stator body. A second coil is inserted into the stator slots for a second phase, where the second coil has a second coil end on the at least one face of the stator body. A third coil may be inserted into the stator slots for a third phase, where the third coil has a third coil end on the at least one face of the stator body. The stator includes a molded body for receiving and electrically insulating the coil ends, where the molded body extends in a first ring area and a second ring area concentric with respect to the first ring area.

Abstract: An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical/rotating work or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets arranged in a circumferentially extending and inwardly facing fashion according to a first perimeter array, the outer component further incorporating a rotating shaft projecting from a central location. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component.

Abstract: An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical/rotating work or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets arranged in a circumferentially extending and inwardly facing fashion according to a first perimeter array, the outer component further incorporating a rotating shaft projecting from a central location. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component.

Abstract: A driver device has a semiconductor module in which a motor terminal extends from a molded body and is connected to a motor wire. A heat sink of the driver device has a module mounting surface, which extends axially outward from an axial end of the motor section, on which the semiconductor module is fastened. The motor terminal includes a base region on a molded body side of a bend location and an extension region on a tip side of the bend location. The extension region has a connection portion on which an insertion hole receives the motor wire. A terminal angle between the extension region and a perpendicular line perpendicular to the motor wire is greater than zero degree. As such, the volume of the driver device is reduced.