Combined Permanent And Electromagnet Patents (Class 310/181)
  • Patent number: 10348174
    Abstract: An electric motor includes a rotor and a stator including a stator core, a plurality of armature windings, a plurality of field windings, and a plurality of bonded magnets. The stator core has a plurality of teeth alternately defining field slots and armature slots along a circumferential direction, and a stator yoke magnetically coupling the plurality of teeth opposite the rotor. Each armature winding is wound around two of the teeth sandwiched between an adjacent pair of the armature slots. Each field winding is wound around two of the teeth sandwiched between an adjacent pair of the field slots. The magnets are individually located in the field slots while opposing the field windings in the radial direction. Each adjacent pair of the magnets along the circumferential direction respectively has an adjacent pair of pole surfaces, with the adjacent pair of pole surfaces having a same polarity.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: July 9, 2019
    Assignees: Daikin Industries, Ltd., Nagoya Institute of Technology
    Inventors: Yoshinari Asano, Takashi Kosaka
  • Patent number: 10284038
    Abstract: An electromechanical rotary actuator includes a stator having teeth extending inwardly from an inner wall surface, wherein free ends of each tooth form an aperture dimensioned for receiving a rotor, the free ends forming a gap therebetween. A segmented set of electrical coils extends around each tooth, wherein each coil of the segmented set has a thickness sufficient for passing through the gap between the first and second teeth. Electrically insulating tabs extend into an opening around each tooth carrying the segmented set of coils. The tabs maintain each of the coils within the segmented set in a spaced relation to the stator. When fabricating the actuator, each of the coils are fabricated and individually placed around a tooth with each coil having a thickness and breadth for optimally packing the stator.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: May 7, 2019
    Assignee: Pangolin Laser Systems, Inc.
    Inventor: William R. Benner, Jr.
  • Patent number: 10250111
    Abstract: Exchangeable stator components are selected and exchangeable rotor components are selected to transform a motor from one motor class to another motor class. A motor comprises at least two stator rings, at least two outer rotor rings, a first input, and a second input. The first input comprises at least one exchangeable stator component selected from a stator component group consisting of a stator spacer ring and an axially magnetized stator magnet ring. The second input comprises at least one exchangeable rotor component from a rotor component group consisting of a rotor spacer ring and an axially magnetized rotor magnet ring.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 2, 2019
    Assignee: QM Power, Inc.
    Inventor: Charles J. Flynn
  • Patent number: 10205358
    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.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: February 12, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Lei Hao, Chandra S. Namuduri, Murali Pandi, Thomas Wolfgang Nehl, Avoki M. Omekanda
  • Patent number: 10090721
    Abstract: A method for producing a rotor body includes producing one or more fiber strips from fiber material, and providing cutouts in the fiber strip or in the fiber strips. The fiber strip or the fiber strips are oriented in relation to one another such that at least one of the cutouts lies on another of the cutouts so that cutouts which lie one above the other form a three-dimensional receptacle for a magnet. A rotor for an electric motor with a rotor body is also provided.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: October 2, 2018
    Assignee: LEANTEC Motor GmbH
    Inventor: Josef Schnoell
  • Patent number: 10084361
    Abstract: A motor includes a rotating portion with a shaft extending along a rotation axis and a rotor that rotates together with the shaft, a stationary portion with a stator located radially outside of the rotor and a magnetic sensor located above the rotor to detect a rotational position of the rotor. The rotor includes a rotor core, a rotor magnet located radially outside of the rotor core and under the magnetic sensor, in contact with the rotor core or located opposite to the rotor core with a first gap therebetween. A recessed portion is recessed from each of an upper end surface and an outer circumferential surface of the rotor core. An inner circumferential surface of a lower end portion of the rotor holder is fixed to a radially inner surface of the recessed portion.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: September 25, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Kazuya Kitaji, Jun Nagasawa, Keizo Furukawa
  • Patent number: 10033255
    Abstract: A driving motor includes a rotor body that is rotatably installed inside a stator with a predetermined void therebetween and has a rotor coil wound on multiple rotator teeth. The rotor body includes: i) multiple wedges inserted between the rotor teeth of the rotor body in an axial direction and supporting the rotor coil; and ii) end coil covers mounted on both axial ends of the rotor body, respectively and connected with the wedge members. Each wedge member includes a wedge body disposed between the rotor teeth in the axial direction and connected with the end coil covers. Each wedge body is made of a metallic material having a conductivity and has an insulating layer formed on an outer surface other than both cross sections connected to the end coil covers. The end coil covers are also made of a metallic material having a conductivity and are connected with the ends of each wedge body.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 24, 2018
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Sangjin Park, WoongChan Chae, Jungwoo Lee
  • Patent number: 10018967
    Abstract: A method for orienting a timepiece component including ferromagnetic material, where, on both ends of this component, two magnetic fields each attract it onto a pole piece, with an unbalance in the intensity of these fields around this component, in order to create a differential in the forces thereon and to press one of these ends onto a contact surface of one of the pole pieces, and to hold the other end at a distance from the other pole piece. A magnetic pivot includes such a component with two ends. It includes a guide device with surfaces of two pole pieces each generating a magnetic field attracting one of these ends, the magnetic forces exerted on the two ends being of different intensity, in order to attract only one end into contact with only one of these pole piece surfaces.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 10, 2018
    Assignee: Montres Breguet S.A.
    Inventors: Sylvain Marechal, Davide Sarchi, Olivier Karlen, Arnaud Todeschini
  • Patent number: 9847164
    Abstract: An inductor core including a two separate inductor core components which, when assembled with each other, together form the inductor core and define a common axis; wherein the inductor core components form at least one magnetic flux barrier, the magnetic flux barrier having a width in the circumferential direction relative to the common axis; wherein the width is adjustable by rotating the inductor core components relative to each other around the common axis.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: December 19, 2017
    Assignee: HÖGANÄS AB (PUBL)
    Inventor: Lars-Olov Pennander
  • Patent number: 9843278
    Abstract: Aspects of a power conversion system can include a capacitor which stores direct current power, an inverter, and a pair of direct current terminals of which are connected to two ends of the capacitor and to the alternating current terminals of which an alternating current motor acting as a load is connected. Also included can be an upper and lower arm portion of which the connection point of semiconductor switches connected in series is connected to the neutral point of the motor, a direct current power source connected in parallel to the upper and lower arm portion and a switch connected between one of the direct current terminals of the inverter and one end of the upper and lower arm portion. The other direct current terminal of the inverter can be connected to the other end of the upper and lower arm portion.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: December 12, 2017
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Akio Toba
  • Patent number: 9812932
    Abstract: A motor includes a rotating portion including a shaft and a rotor, and a stationary portion including a stator and a magnetic sensor. The magnetic sensor is located above the rotor to detect the rotational position of the rotor. The rotor includes a tubular rotor core defined by laminated steel sheets; a rotor magnet including an upper end surface at an axial level higher than an axial level of an upper end surface of the rotor core; and a rotor holder including a ferromagnetic body, and above the rotor core and radially inside of the rotor magnet. Each of the rotor core and an outer cylindrical portion of the rotor holder is in contact with the rotor magnet or opposite to the rotor magnet with a gap intervening therebetween.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 7, 2017
    Assignee: NIDEC CORPORATION
    Inventors: Kazuya Kitaji, Jun Nagasawa, Keizo Furukawa
  • Patent number: 9755477
    Abstract: The aim of the invention is to better compensate for specifiable forces on a magnetic mounting. This is achieved by a magnetic mounting device with a first magnet device (10), which is designed in an annular manner and which has a central axis, for retaining a shaft on the central axis in a rotatable manner by means of magnetic forces. The magnetic mounting device additionally has a second magnet device (12), which is independent of the first magnet device (10), for compensating for a specifiable force acting on the shaft. In this manner, the magnetic mounting device can compensate for the gravitational force or forces based on imbalances.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: September 5, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Roland Bittner, Markus Hösle, Hilmar Konrad
  • Patent number: 9712029
    Abstract: A holding element (68, 82) for attaching magnets (62) to a rotor (20) of an electrical machine (10). This electrical machine is, in particular, designed as an AC generator and comprises intermediate spaces (60) between the individual poles (24, 25). The holding element (68, 82) comprises a top side (72) and spring lugs (70) which axially fix the magnets (62). The holding element (68, 82) has claw-like projections (74) which bear against flanks (80) of the poles (24, 25) when the holding element (68, 82) is in the fitted state.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: July 18, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Christa Bauch, Guenter Rademacher, Martin Schulz, Ngoc-Thach Nguyen, Guillermo Saiz, Paola Zapico Fanjul, Vincent Riou
  • Patent number: 9698718
    Abstract: A motor speed control system includes a motor, a control module and a displaying module. The motor includes a rotor and a stator. The rotor includes at least one induction rotor portion. The stator includes at least one induction stator portion. The induction rotor portion is corresponding to the induction stator portion. The control module is electrically connected to the rotor and the stator. The control module controls an induction rotor current of the induction rotor portion and an induction stator current of the induction stator portion to produce a rotor speed. The control module decreases or turns off the induction rotor current to keep the rotor speed at a predetermined value according to a rotational inertia of the rotor and the induction stator current when the rotor speed reaches the predetermined value. The displaying module displays the rotor speed and variable currents.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: July 4, 2017
    Assignee: HANKING POWER TECHNOLOGY CO., LTD.
    Inventor: Tzu-Nan Chuang
  • Patent number: 9676277
    Abstract: An inverter for an electric machine as well as a method for operating an inverter for an electric machine. In this context, the inverter has at least one output stage unit for producing a connection between the electric machine and a power supply network, a control unit for controlling the at least one output stage unit, a supply unit independent of the power supply network for the power supply of the output stage unit(s), at least one emergency operation control assigned to the output stage unit(s) for controlling the output stage unit(s) in the fault case, as well as at least one emergency operation supply assigned to the output stage unit(s) for generating a power supply for the output stage unit(s) from the power supply network in the fault case.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: June 13, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Albrecht Schwarz, Matthias Heil, Axel Haas
  • Patent number: 9634530
    Abstract: A rotor comprises a first rotor lamination and a second rotor lamination. The first rotor lamination and the second rotor lamination are configured for defining, when joined into rotor assembly, a central axis of rotation and a plurality of interior magnet pockets disposed symmetrically about the central axis of rotation, each pocket of the plurality of interior magnet pockets is configured for housing and retaining a permanent magnet. A method of forming a rotor comprises forming a first rotor lamination and a second rotor lamination, rotating the second rotor lamination about an axis of symmetry of the second rotor lamination; and mating the first rotor lamination to the second rotor lamination such that a first notch of the first rotor lamination is disposed adjacent to the first notch of the second rotor lamination.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 25, 2017
    Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
    Inventors: Steven D. Klein, Jeffrey T. Klass, Mohammed R. Islam, Mohammad S. Islam, Mazharul H. Chowdhury
  • Patent number: 9624939
    Abstract: A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmolded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: April 18, 2017
    Assignee: DANFOSS A/S
    Inventors: Lin Sun, Alain Pepin
  • Patent number: 9601949
    Abstract: The invention relates to a synchronous machine with hybridenergisation, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator (16) with a multiphase stator winding (18) and a laminated rotor (20) with an energizer winding (29), which together with permanent magnets (24,25) around the rotor periphery, provides the energisation for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves (40) for the energiser windings (29) are disproportionately enlarged in relation to the groove base (44) and are preferably bell-shaped.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 21, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Kurt Reutlinger, Markus Heidrich
  • Patent number: 9525330
    Abstract: An electropermanent linear actuator has a stator, forcer, drive circuitry, and feedback control mechanism. The stator includes at least one electropermanent magnet with a coil that passes current pulses that change the magnetization of the magnet, which change persists after current is removed. The forcer moves with respect to the stator in response to the persistent changes in magnetization. Drive circuitry controls the position or speed of the actuator by controlling the timing, magnitude, and/or shape of the current pulses. The voltage and duration of pulses are of sufficient magnitude to cause the magnetization change to persist after cessation of current, with voltage and current returning substantially to zero between pulses. The feedback control mechanism determines, based on actuator velocity or position, when the next current pulse should be issued, pulse issuance being timed so that the actuator will continue to move throughout the absence of applied current between pulses.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: December 20, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Ara Knaian, Neil A. Gershenfeld, Maxim Lobovsky
  • Patent number: 9509189
    Abstract: A magnetic wedge comprises a first element of magnetic material extending longitudinally along a first direction and second element of non-magnetic material coupled to the first element and having at least one skew portion relative to the longitudinal extension direction of the wedge.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: November 29, 2016
    Assignee: Nidec ASI S.p.A.
    Inventors: Fabio Luise, Antonio Calonico
  • Patent number: 9467031
    Abstract: Methods and apparatus that employ a coil-less magnetoelectric flux switch arrangement to repeatedly switch magnetic flux from at least one permanent magnet for the purposes of generating motive force and/or electrical energy.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 11, 2016
    Inventor: Brad D. Pedersen
  • Patent number: 9270144
    Abstract: An electromechanical rotary actuator includes a rotor and a stator having one or more slots into which one or more coils are placed. The stator includes a rotor position restoring means which overcomes cogging outside a desired rotation range. The rotor position restoration means may include one or more restoring magnets or optionally include a contoured cavity within the stator proximate the rotor. One stator includes teeth having contoured ends forming a portion of the aperture within which the rotor operates. Distal ends of the teeth form a relatively large gap compared to typical actuators, wherein the gap is sized to the rotor magnet. An actuator desirably having a high torque constant, low coil resistance and a low coil inductance is provided.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: February 23, 2016
    Inventor: William R. Benner, Jr.
  • Patent number: 9184646
    Abstract: Embodiments of the invention provide a starter machine control system including an electronic control unit. The control system can include a starter machine that is in communication with the electronic control unit. The starter machine can comprise a solenoid assembly that includes at least one biasing members and a coil winding. The starter machine can also include a motor that is coupled to a pinion. The motor can include a field assembly and an armature assembly. The field assembly can include a support body and permanent magnets that are supported within the support body. A plurality of flux members can be disposed between the permanent magnets. A plurality of windings can be disposed around the flux members and can be coupled to a control circuit.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: November 10, 2015
    Assignee: REMY TECHNOLOGIES, LLC
    Inventor: David A. Fulton
  • Patent number: 9178353
    Abstract: An active bypass diode circuit that mitigates the hazard of arc flash events in a Photovoltaic (PV) solar power array, and a PV solar power module that utilizes a plurality of said active bypass circuits are disclosed The active bypass circuit comprises a diode, a switch in parallel with the diode, a control circuit for opening and closing the switch, a circuit for detecting arc flash events, a power management circuit, a power supply circuit, and a capacitor. When an arc flash event is detected, all the switches are closed concurrently, reducing the voltage produced by the PV string to a level that is too low the sustain the arc, and thereby terminating the arc.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: November 3, 2015
    Assignee: Sunfield Semiconductor, Inc.
    Inventor: Steven Andrew Robbins
  • Patent number: 9160206
    Abstract: The aim of the invention is to provide an electric motor which has a high torque at low rotation speeds and a high power at high rotation speeds. The invention therefore proposes an electric motor with permanent-magnet excitation having a first active part (10), which is fitted with permanent magnets (11), and a second active part (10), which can be moved in relation to the first active part (10) by magnetic force of the permanent magnets (11). The electric motor also has a heating device (12) with which the magnetic field of at least one of the permanent magnets (11) can be weakened by heating the permanent magnets as a function of a speed of the first active part (10) in relation to the second active part (8).
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: October 13, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Detlef Potoradi, Rolf Vollmer, Dirk Van Riesen
  • Patent number: 9160218
    Abstract: A machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (E1) distributed within a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed within an intermediate portion of the magnetic body. The circumferential polar section includes a third recess (E3), and a portion of the magnetic body forming a bridge having a height of around 0.7 mm to around 2 mm is retained between an apex of the recess and an outer pole face.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: October 13, 2015
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Jean-Claude Matt, Jean-Claude Mipo, Li Li, Albert Foggia
  • Patent number: 9035524
    Abstract: The present invention provides an auxiliary excitation winding set to be installed at the rotary part of the electric machine (104) composed of a rotary part of the permanent magnetic electric machine or a rotary part of the reluctance electric machine of the switched DC brushless electric machine (1000), and an electric conductive annular brush device (107) is served as an interface for transmitting the electric power, thereby inputting the excitation electric power to the auxiliary excitation winding set; and through controlling the value and the polarity of excitation voltage and current, the magnetic pole of the rotary part of magnet-motive electric machine (104) of the switched DC brushless electric machine (1000) can be performed with the excitation effect of auxiliary excitation or differential excitation or auxiliary compound excitation or differential compound excitation.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: May 19, 2015
    Inventor: Tai-Her Yang
  • Patent number: 9018815
    Abstract: The generator comprises a stator (10) having a plurality of protruding portions for stator pole (12) on the outer peripheral surface of the stator main unit (11), and a rotor (20) having a plurality of protruding portions for rotor (22) mounted around the stator (10) in a rotatable state. Since the height of the plurality of protruding portions for stator pole (12) decreases along the rotational or reverse rotational direction of the rotor (20), a torque waveform containing odd-order components is generated when the rotor (20) is rotated coaxially around the stator (10). The plurality of protruding portions for stator pole (12) comprises a first protrusion group for stator pole (12A) and a second protrusion group for stator pole (12B), and the first protrusion group for stator pole (12A) and the second protrusion group for stator pole (12B) are formed with the protruding portions for stator pole (12) laid out along the circumferential direction spaced apart from each other.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: April 28, 2015
    Assignee: Tohoku University
    Inventors: Kenji Nakamura, Osamu Ichinokura
  • Patent number: 9018891
    Abstract: A motor includes a frame, a shaft rotatably mounted onto the frame, and at least one disc mounted onto the shaft. At least one permanent magnet is mounted on the disc, and at least one electromagnet and at least one coil are mounted to the frame in rotational magnetic proximity to the permanent magnet. A battery is connectable to the electromagnet and the coil for energizing the electromagnet and for receiving electrical current from the coil for charging the battery. A relay switch controls the transmission of electrical power from the battery to the electromagnet. A sensor generates a signal to the relay switch to activate electrical power to the electromagnet upon sensing that the permanent magnet is positioned with respect to the electromagnet such that a magnetic force generated by the electromagnet would be effective for inducing movement of the permanent magnet and consequent rotation of the disc.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 28, 2015
    Inventor: Clifford R. Rabal
  • Patent number: 9013196
    Abstract: An electric machine includes a first active part, which has a plurality of active part segments disposed one behind the other in a direction of movement of the electric machine, with each of the active part segments including a position measuring device, and a second active part with a measuring device for identifying the respective position measuring device. Each position measuring device has at least one position measuring unit having a dielectric constant, wherein the dielectric constant of the position measuring unit in one of the active part segments is different than the dielectric constant in an adjacent one of the active part segments. The measuring device includes at least one measuring unit to determine the dielectric constant of the position measuring units.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: April 21, 2015
    Assignee: Siemens Aktiegesellschaft
    Inventor: Roland Finkler
  • Patent number: 9000649
    Abstract: The present invention relates to a multi-set switched DC brushless electric machine having its rotary part of electric machine being installed with an auxiliary excitation winding set, for being connected in series with a magnetic field winding set of electric machine of another electric machine through the auxiliary excitation winding set installed on the rotary part of electric machine, such that the excitation can be variable through altering the current of the magnetic field winding set of electric machine of the another electric machine thereby changing the operational characteristic of the electric machine.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: April 7, 2015
    Inventor: Tai-Her Yang
  • Publication number: 20150084472
    Abstract: The invention relates to an electrical power motor-generator excited by magnetic transference, and which further comprises a stator (1) and a rotor (2) with an external core (3) stationary relative to the stator and rotor, said external core (3) comprising: an outer axial part, or axial armature (6) joined to the stator (1), an inner part that communicates through an air gap (4) with the rotor (2), a third part, disk (8), that joins the other two parts, where the rotor does not have any excitation coils, and hence no rings or collector brushes. The outer core (3) has an axial permanent magnet (12) and permanent magnets (10) on the outer axial part (6) thereof, and electromagnets (11) in the other two parts or on the disk (8). The rotor does not have brushes to create a magnetic field, which is created by the magnets and coils of the outer core (3), the magnetic flow transmitting the induction flow to the rotating rotor, through an air gap, thus dispensing with rings and collector brushes.
    Type: Application
    Filed: March 21, 2013
    Publication date: March 26, 2015
    Inventors: Arturo Perez Rodriguez, Jose Luis Lopez Martin
  • Patent number: 8970083
    Abstract: An improved motor (90) broadly including a first member (30) and a second member (20) mounted for movement relative to one another. The first member has a plurality of poles (32) spaced substantially equidistantly. The second member has a plurality of arms (22). Each arm includes a plurality of fingers (27), a permanent magnet (29), and a coil (25). The fingers are arranged such that their distal end generally faces toward the poles on the first member. Each permanent magnet has a width that is greater than the pole spacing. Each arm is associated with one of a number of phases. The fingers of the arms within a particular phase are arranged such that they simultaneously align with respective poles when the first and second members are in one position relative to one another.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: March 3, 2015
    Assignee: Moog Inc.
    Inventor: Steve Zong-Ping Zhao
  • Publication number: 20150054373
    Abstract: The invention relates to commutatorless, brushless DC machine with stationary armature and method of operating the same. The armature system is so deployed within magnetic flux producing arrangement having closed path for flux through magnetic substance except air gaps, that the two coil sides of an armature coil are facing like poles of two different magnetic field systems 1 and 2. During DC generator operation magnetic field systems are rotated or moved linearly in same direction with respect to stationary armature such that DC emf in each coil is sum of emfs of all insulated conductor which are alternatingly facing magnetic fields 1 and 2. During DC motor operation rotatable torque or linear force is generated by armature coil conductors carrying direct current on magnetic field systems 1 and 2, causing the rotation or linear movement of the above said two magnetic field systems in same direction.
    Type: Application
    Filed: January 30, 2013
    Publication date: February 26, 2015
    Inventor: Sambhaji Shankarrao MANE
  • Patent number: 8922086
    Abstract: A synchronous electric machine having a fixed stator, a multi-phase stator winding and having a rotor which has poles, excited in a predefined sequence, over its circumference, the number of poles being changeable as a function of the intensity and the direction of a field current in at least one field coil of the rotor. For improving the efficiency of the machine and for reducing the number of field coils and the entire coil cross section it is provided that the rotor has a laminated core, laminated in the axial direction, which has grooves on the circumference for accommodating the at least one field coil and that the at least one field coil is situated on the circumference of the rotor with a step size which corresponds to the pole pitch of the lower number of poles.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: December 30, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Kurt Reutlinger
  • Publication number: 20140368077
    Abstract: A hybrid excitation rotating electrical machine configured with a rotor having a shaft extended on at least one side in an axial direction, and first and second cores that are separated in the axial direction with a gap between the cores. First magnetic poles that are excited by a permanent magnet and second magnetic poles that are not excited by the permanent magnet are alternately arranged in a circumferential direction in each of the first and second cores. The first magnetic poles of the first core have a different polarity from that of the first magnetic poles of the second core, and the first magnetic poles of one of the first and second cores are placed so as to face the second magnetic poles of the other of the first and second cores in the axial direction with the gap between the magnetic poles.
    Type: Application
    Filed: January 31, 2013
    Publication date: December 18, 2014
    Applicant: AISIN AW CO., LTD.
    Inventors: Junichi Yokota, Katsuichi Kono, Ken Takeda
  • Publication number: 20140285053
    Abstract: A flux-regulated permanent magnet machine (PMM) includes a stationary portion and a rotating portion. The stationary portion includes a plurality of stator/armature windings. The rotating portion includes a plurality of permanent magnets and a control/field winding that is supplied with current to control the magnetic flux presented to the stator/armature windings.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 25, 2014
    Applicant: Hamilton Sundstrand Corporation
    Inventor: Richard A. Himmelmann
  • Patent number: 8836190
    Abstract: A magnetic bearing (108) with an axis of rotation (106), wherein the magnetic bearing comprises: a cylindrical rotor (116) comprising a ferromagnetic material (118, 338, 440) wherein the cylindrical rotor has an axis of symmetry (114), wherein the cylindrical rotor has an inner radius (124), wherein the cylindrical rotor has a top side (128), a static hub (120), wherein the static hub has an overhang (122) which protrudes from the static hub and is located adjacent to the top side, a lift magnetic actuator apparatus (130) for controlling the distance (126) between the top side and the overhang, a radial magnetic actuator apparatus (132) for controlling the distance (136) between the inner radius and the axis of rotation.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: September 16, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Sahin Funda, Krijn Frederik Bustraan, Olav Seijger, Justus Bjorn Post
  • Patent number: 8810102
    Abstract: The invention relates to an electric machine, in particular to a generator for supplying the electrical system of a motor vehicle, comprising a laminated rotor (20) with an energiser winding (29), which provides the energisation for the machine preferably in conjunction with permanent magnets (24, 25) arranged on the rotor periphery. According to the invention, the rotor laminate bundle (21) is made up of at least two part bundles (21a, b) in the axial direction with grooves (40) running into each other and with poles offset relative to each other (32 to 38). A machine with reduced detent torque is thus obtained with grooves (40) aligned parallel to the axis, in which the energiser windings (29) can be placed with a high filling factor and without production difficulties and without the risk of damaging the winding insulation.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: August 19, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Kurt Reutlinger
  • Patent number: 8796898
    Abstract: According to one embodiment, a rotor is configured by a rotor core and magnetic poles. Two or more types of permanent magnets are used such that each product of coercivity and thickness in the magnetization direction becomes different. A stator is located outside the rotor with air gap therebetween and configured by an armature core winding. At least one permanent magnet is magnetized by a magnetic field by a current of the armature winding to change a magnetic flux content thereof irreversibly. A short circuited coil is provided to surround a magnetic path portion of the other permanent magnet excluding the magnet changed irreversibly and a portion adjacent to the other permanent magnet where the magnetic flux leaks. A short-circuit current is generated in the short circuited coil by the magnetic flux generated by conducting a magnetization current to the winding. A magnetic field is generated by the short-circuit current.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 5, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Hashiba, Kazuto Sakai, Norio Takahashi, Kazuaki Yuuki, Masanori Arata, Yusuke Matsuoka, Motoyasu Mochizuki, Tadashi Tokumasu
  • Patent number: 8791613
    Abstract: A flywheel levitation apparatus and associated method are described for use in a flywheel driven power storage system having a rotor and which provides for an upward vertical movement of the rotor along an axis of rotation. The rotor includes a rotor face defining a cutaway section. A magnetic lifting force is applied to the rotor to at least in part serve in levitating the rotor. The magnetic lifting force exhibits a modified gap sensitivity that is smaller as compared to a conventional gap sensitivity that would be exhibited in an absence of the cutaway section.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: July 29, 2014
    Assignee: Beacon Power, LLC
    Inventor: Jimpo Wang
  • Publication number: 20140184010
    Abstract: The invention relates to a synchronous machine with hybridenergisation, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator (16) with a multiphase stator winding (18) and a laminated rotor (20) with an energizer winding (29), which together with permanent magnets (24,25) around the rotor periphery, provides the energisation for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves (40) for the energiser windings (29) are disproportionately enlarged in relation to the groove base (44) and are preferably bell-shaped.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 3, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Kurt Reutlinger, Markus Heidrich
  • Patent number: 8749105
    Abstract: A high-efficiency magnetic inductor rotary machine in which eddy current loss is reduced even if driven at super-high-speed rotation, and a fluid transfer apparatus that uses the same. In the magnetic inductor rotary machines, first and second stator cores are disposed coaxially such that circumferential positions of teeth are aligned, and first and second rotor cores are fixed coaxially to a rotating shaft such that salient poles are offset by a pitch of half a salient pole circumferentially, and are disposed on an inner peripheral side of the first and second stator cores. A salient pole width of the salient poles of the first and second rotor cores is configured so as to be greater than an opening width of slots of a stator.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: June 10, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideaki Arita, Masaya Inoue, Masahiro Iezawa, Toshihiko Miyake
  • Patent number: 8729766
    Abstract: The invention relates to a synchronous machine with hybrid energization, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator (16) with a multiphase stator winding (18) and a laminated rotor (20) with an energizer winding (29), which together with permanent magnets (24,25) around the rotor periphery, provides the energization for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves (40) for the energizer windings (29) are disproportionately enlarged in relation to the groove base (44) and are preferably bell-shaped.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: May 20, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Kurt Reutlinger, Markus Heidrich
  • Publication number: 20140091665
    Abstract: A DC electric rotating machine, mainly for the starter of an automotive vehicle. The machine includes a stator including a wound structure forming a plurality of poles extending along the circumference of the stator, a rotor, and a set of brushes adapted for the electric supply of the rotor by commutation of the electric current in sections of the rotor. The wound structure of the stator includes a plurality of slots between two central parts of consecutive poles of the stator, these slots being formed in a magnetic body of the stator. At least one of the slots including at least one conducting segment forming a winding of an electrical coil.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 3, 2014
    Applicant: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventors: Nicolas LABBE, Benoit DUPEUX, Jean-Paul YONNET
  • Publication number: 20140077654
    Abstract: Disclosed is a rotor for a motor in a vehicle. More specifically, the rotor includes a rotation shaft serving as a center of rotation of the rotor, a core installed at the rotation shaft and comprising a plurality of teeth radially protruding with respect to the rotation shaft, a coil wound around the tooth to generate a magnetic field by an external power source, and a pair of permanent magnets installed at both sides of the teeth. Also disclosed is a synchronous motor including the rotor, and a wound rotor synchronous motor.
    Type: Application
    Filed: December 10, 2012
    Publication date: March 20, 2014
    Applicant: HYUNDAI MOTOR COMPANY
    Inventor: Hyundai Motor Company
  • Patent number: 8674575
    Abstract: An increase of the magnetization current can be restrained during demagnetization and magnetization, and a variable speed operation can be achieved at a high power output over a wide range of from a low speed to a high speed. A rotor 1 is configured by a rotor core 2, permanent magnets 3 having a small value as the product of the coercivity and the thickness in the magnetization direction thereof, and permanent magnets 4 having a large value as the product. When reducing a flux linkage of the permanent magnets 3, a magnetic field directed to the reverse direction of the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them. When increasing a flux linkage of the permanent magnets 3, a magnetic field directed to the same direction as the magnetization direction of the permanent magnets 3 due to a current of an armature coil is caused to act on them.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: March 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuto Sakai, Yutaka Hashiba, Yosuke Otsubo, Yusuke Matsuoka, Norio Takahashi, Tadashi Tokumasu
  • Patent number: 8664814
    Abstract: Disclosed herein is a switched reluctance motor including: a rotor part including a rotor core having a shaft fixedly coupled to the center thereof and a plurality of rotor salient poles formed to be protruded from an outer peripheral surface of the rotor core; a stator part including a stator yoke having the rotor part rotatably received in an inner portion thereof and a plurality of stator salient poles formed to be protruded from the stator yoke in a direction toward the rotor salient poles so as to correspond to the rotor salient poles and having coils wound therearound; and a printed circuit board fixedly coupled to an upper portion of the stator part and including a plurality of ground parts having the coils penetrating therethrough, the coil being wound around the plurality of stator salient poles.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: March 4, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Jin Su Seok
  • Patent number: 8653710
    Abstract: A rotor has rotor cores divided in the axial direction. A permanent magnet is mounted at the position of each of the magnetic poles of cores. The permanent magnet of each magnetic pole is configured by a single tabular member that penetrates the two divided cores in the axial direction. Convex parts are respectively provided on the outer peripheries of the respective magnetic poles of the rotor cores along the axial direction of the rotor. The convex parts are provided to positions that are displaced for each of the two divided cores. The magnetic flux density increases in the convex parts, which becomes the magnetic pole center. Since the convex parts positions are displaced to each other, a skew function can be exhibited even if the permanent magnet is mounted at the same position.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Norio Takahashi, Kazuto Sakai, Yutaka Hashiba, Kazuaki Yuuki, Masanori Arata, Yusuke Matsuoka, Tadashi Tokumasu
  • Patent number: 8648514
    Abstract: In a rotary electric motor a first stator core and a second stator core are disposed coaxially so as to be separated by a predetermined distance axially and such that circumferential positions of teeth are aligned, and a first rotor core and a second rotor core on which salient poles are disposed at a uniform angular pitch circumferentially are fixed coaxially to a rotating shaft so as to be positioned on inner peripheral sides of the first stator core and the second stator core, respectively, and so as to be offset circumferentially by a pitch of half a salient pole from each other. A first permanent magnet that is magnetically oriented such that a direction of magnetization is radially inward is disposed on an outer peripheral surface of a core back of the first stator core, and an outer peripheral surface of the first permanent magnet and the outer peripheral surface of the core back of the second stator core are linked by a frame that is made of a magnetic material.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: February 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideaki Arita, Masaya Inoue, Masahiro Iezawa, Hayato Yoshino, Kazuhiko Baba, Hitoshi Kawaguchi, Toshihiko Miyake