Abstract: A rotational difference is generated between a first and a second rotor and a third rotor, which causes an induced current to flow in a first rotor winding. This causes a torque to act between the first rotor and the third rotor. The rotary magnetic field generated by the induced current flowing through a second rotor winding interacts with a second stator, which in turn generates an induced electromotive force in a second stator winding. The induced electromotive force is applied via a phase adjustment circuit to a first stator winding, which generates a rotary magnetic field and causes a torque to act between the first stator and the third rotor. The rotary magnetic field generated by the second rotor winding and the induced current flowing in the second stator winding causes a torque to act between the second stator and the second rotor.

Abstract: An electric machine having a rectifier assembly placed within a rotating shaft of the electric machine to convert the AC output of the electric machine to the DC input prior to transmission of the electricity from the electric machine.

Abstract: A rotor for an electric rotating machine includes a hollow cylindrical rotor core and a plurality of magnets. The rotor core has a plurality of magnet-receiving holes formed therein. Each of the magnet-receiving holes has a plurality of wall surfaces including a radially innermost wall surface which is positioned radially innermost among the plurality of wall surfaces. Each of the magnets is received in a corresponding one of the magnet-receiving holes of the rotor core. Further, each of the magnets is arranged in the corresponding magnet-receiving hole so that among the thermal resistances between the magnet and the plurality of wall surfaces of the corresponding magnet-receiving hole, the thermal resistance between the magnet and the radially innermost wall surface of the corresponding magnet-receiving hole is lowest.

Abstract: A rotor parameter sensor is used for electric drives. A rotor of an electric engine or motor is monitored by a sensor sensing one or more physical observables or operation parameters. Furthermore, a method and system is used for monitoring an electric engine or motor for use in electric or hybrid vehicles.

Abstract: An electrical rotating machine system that can be easily maintained and can provide improved power generation efficiency. The electrical rotating machine system includes: a first electrical rotating machine having a first stator that has first stator windings, and a first rotor that has first rotor windings and is disposed on the internal diameter side of the first stator so as to have a gap between the internal diameter side of the first stator and the first rotor itself; a second electrical rotating machine having a second stator that has second stator windings, and a second rotor that has second rotor windings and is disposed on the internal diameter side of the second stator so as to have a gap between the internal diameter side of the second stator and the second rotor itself; and at least one power converter that is electrically connected to the first rotor windings and the second rotor windings, and configured to rotate when the first rotor rotates.

Abstract: A motor stator includes a plurality of separate core segments, a plurality of coils, and a fixing ring. Each core segment includes a yoke and a tooth extending from the yoke. The yokes are connected to form a substantially circular core, with the teeth extending inwards. Each coil is wound around a corresponding tooth. The fixing ring is fixed to the outer surface of the core.

Abstract: A system and method for controlling and stabilizing a satellite or other vehicle about any axis is disclosed. Embodiments achieve this three-axis control and stabilization with a spherical motor system or reaction sphere capable of storing momentum in a rotor. The spherical motor system comprises a spherical rotor having permanent magnets arranged in evenly-spaced antipodal pairs. Each of the permanent magnets are oriented with the same magnetic pole facing outward from a center of the rotor. The spherical motor system also comprises a stator which has magnetic sensors surrounding electromagnets. The spherical motor system further comprises a control system that controls timing and duration of energization of the electromagnets based on the detection of one of the permanent magnets by the magnetic sensors. Such a spherical motor system provides three-axis stabilization and control of a satellite (or other vehicle).

Abstract: An electric damper for a vehicle for damping a relative motion between two components includes an electrical generator, which can be driven by the relative motion, for generating an induced voltage. Said electrical generator has a stator, a rotor, and associated induction windings and field magnets. According to the invention, the rotor is designed as a two-part rotor, comprising an inner, stationary iron core and a radially outer hollow wheel, which carries the induction windings or the field magnets.

Abstract: A rotary solenoid includes a swing yoke to which two magnets are fixed and a fixed yoke including projection portions at opposite sides thereof. An electromagnetic coil including a major magnetic pole is arranged at a center of the fixed yoke. The rotary solenoid is arranged to define a magnetic circuit extending through one of the magnets, the major magnetic pole, the fixed yoke, the projection portion, and the other magnet at a shortest distance.

Abstract: A rotor includes a rotor iron core in which magnet insertion holes that are arrayed in a radial direction so as to be convex toward an inner peripheral side are provided for each magnetic pole, and in which the magnet insertion holes are arranged in a circumferential direction according to the number of magnetic poles, and flat-shaped permanent magnets that are inserted respectively in the magnet insertion holes, wherein the magnet insertion holes, which are arranged on an innermost peripheral side and adjacent to each other in a circumferential direction are provided in such a manner that the width of the magnet insertion hole gradually becomes larger toward the inner peripheral side such that the width of the iron core between the adjacent magnet insertion holes in a circumferential direction is constant in a radial direction.

Abstract: A linear vibration motor includes a stator part including a case having an internal space formed in the case, a bracket coupled to the case to close the internal space, and at least a magnet provided in the internal space, a vibrator part provided in the internal space, including a coil positioned so as to face the magnet and a printed circuit board having one end coupled to the bracket and the other end coupled to the coil, and an elastic member connecting the stator part and the vibrator part to each other.

Abstract: A device for producing electricity. The device comprises an indium gallium phosphide semiconductor material comprising a plurality of indium gallium phosphide material layers each layer having different dopant concentrations and doped with either n-type dopants or p-type dopants, a first terminal on a first surface of the semiconductor material, a beta particle source proximate the first surface for emitting beta particles that penetrate into the semiconductor material, and a second terminal on a second surface of the semiconductor material; the semiconductor material for producing current between the first and second terminals responsive to the beta particles penetrating into the semiconductor material.

Abstract: The rotary electric machine includes: a stator (1) of concentrated winding in which a stator winding (14) is wound around a stator core (11), the stator core including a coil bobbin (13) and an insulating paper (12); and as a mechanism for supporting a terminal portion of the stator winding extending from the stator disposed in an annular shape, an end portion supporting member (18) for supporting a winding finishing end portion of the stator winding in a substantially linear section (16) of the stator winding, the substantially linear section being provided from a last winding portion of the coil bobbin to the winding finishing end portion.

Abstract: A drive unit for automotive applications, specifically for application with or in combination with a motor vehicle door lock, a housing (5), a motor (1) as well as an associated motor shaft (2), and with at least one spring element (6) generating an axial force at one end of the motor shaft (2), with the spring element (6) being located in at least one receptacle (7, 8) in the housing (5). In a top view, the spring element (6) has essentially a T-shaped design with an end plate (6a) and cantilevers (6b) on both sides, with the end plate (6a) acting upon the motor shaft (2), and at least the cantilevers (6b) being arranged in the receptacle (7, 8).

Abstract: An electric machine includes a stator disposed about an axis in register with the rotor. The stator has a plurality of slots parallel to the axis. A plurality of windings with generally rectangular cross sections is provided with each winding having a first portion disposed radially inward of a second portion relative to the axis. At least two of the plurality of windings are at least partially inserted into each of the plurality of slots. The plurality of generally rectangular windings in each of the plurality of slots is configured to reduce resistive loss within the stator.

Abstract: A window regulator motor assembly has an electric motor, a worm, a gear and a controller. The motor has an end face and an output shaft extending outwardly from the end face. The motor further includes a connector extending outwardly from the end face spaced from and generally parallel to the output shaft. The worm is on the output shaft and is driven by the motor. The gear is driven by the worm. The controller includes a circuit board positioned between the output shaft and the motor connector. A motor control connector extends from a first face of the circuit board and engages the motor connector. A speed sensor is on the second face of the circuit board and faces the output shaft.

Abstract: A method is provided for making a synthetic jet ejector.

Abstract: A power tool with a combined printed circuit board (PCB) that reduces internal wiring of the power tool and provides a large amount of air flow to internal components. In some instances, the combined PCB has a surfboard shape and includes a motor control unit and power switching elements (Field Effect Transistors or FETs). The combined surfboard PCB is located above the trigger, but below the motor and drive mechanism. In other instances, the combined PCB has a doughnut shape and is located coaxially with a motor shaft. The combined PCB may be positioned between a doughnut-shaped control PCB and the motor.

Abstract: A first accommodation chamber accommodating therein an inverter unit with a built-in inverter circuit and a second accommodation chamber accommodating therein a filter unit with a built-in filter circuit are formed individually in different positions of a housing of a motor-driven compressor for a vehicle. The input terminals and the output terminals of the inverter unit and of the filter unit are all arranged so as to extend in the same direction.

Abstract: A transverse flux machine includes a stator having a circular coil wound in a rotational direction and a rotor arranged to face the first ferromagnet across a gap. The stator has a plurality of first ferromagnets surrounding a part of the circular coil in the rotational direction separately. The rotor is rotatable about a center axis of the circular coil relative to the stator. The rotor has a plurality of second ferromagnets arranged in the rotational direction separately. A first member and a second member are inserted between adjacent ones of the second ferromagnets. The first member and the second member generate two magnetic fields opposite to each other in the circumference direction.