Combined Permanent And Electromagnet Patents (Class 310/181)
  • Patent number: 11472292
    Abstract: A manipulation system capable of controlling various functions in a vehicle includes a detachable rotary manipulation system capable of corresponding to various manipulation environments using an electromagnet and a method of controlling the same. The method includes determining whether a rotary manipulation unit having a plurality of magnets disposed thereat has been attached based on a change in current of a plurality of electromagnetic coils disposed at an attachment unit and controlling whether to activate at least some of the plurality of electromagnetic coils based on at least one of the number of clicks per rotation corresponding to a function to be controlled or a manipulation system type of the rotary manipulation unit upon determining that the rotary manipulation unit has been attached.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: October 18, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Hoon Chung, Sung Un Kim, Si Hoon Sung
  • Patent number: 11316417
    Abstract: A Rotor of a claw pole machine (12), having a rotor winding (5), which is surrounded by pole fingers of claw poles, for generating an excitation field, and having permanent magnets (8, 10), wherein two permanent magnets (8), which are arranged offset in the circumferential direction and have a magnetization in the circumferential direction, are allocated to a pole finger (3) in the axial direction next to the pole finger, a magnetic flux guiding element (9) being arranged between the two permanent magnets (8).
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: April 26, 2022
    Assignee: SEG Automotive Germany GmbH
    Inventor: Enrico Carraro
  • Patent number: 11218102
    Abstract: In a method for determining the rotor position of a three-phase machine without using a rotary encoder, and a device for controlling a three-phase motor without using a rotary encoder, the three-phase machine is fed by a converter that can be operated by pulse-width modulation, and the converter has model variables for the rotor angle and the current indicator of the three-phase machine, and the converter has device(s) by using which, in control operation, at least two values are measured which represent a measure of the local inductances of the machine which represent a measure of the local inductances of the machine, the error of the model rotor angle is determined in that, depending on the model rotor angle and the model current indicator, at least two weighting factors are determined, and in that a weighted sum is formed from the at least two measured values and the at least two weighting factors, and in that a further offset value is subtracted from the sum, which is likewise determined on the basis of t
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 4, 2022
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Wolfgang Hammel, Harald Wolf
  • Patent number: 11088577
    Abstract: A permanent magnet synchronous machine includes a stator including a plurality of split core blocks that are continuously arranged in a rotation direction of a rotor. The plurality of split core blocks each includes: a permanent magnet; a pair of teeth arranged on both ends of the permanent magnet so as to sandwich the permanent magnet in the rotation direction; and connection teeth, which are provided on axial end portions of the pair of teeth sandwiching the permanent magnet, and are configured to connect the pair of teeth.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: August 10, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshinori Tanaka, Kenta Motoyoshi, Toru Ogawa, Shinichi Yamaguchi, Ryuichi Takiguchi
  • Patent number: 11043879
    Abstract: An electric motor has a stator defining multiple stator poles with associated electrical windings, and a rotor having multiple rotor poles. The rotor has flux barriers between adjacent rotor poles, the flux barriers each having a material with an electrical conductivity higher than the rotor pole material. The flux barriers are electrically isolated from one another external to the ferromagnetic material. Eddy currents are induced in the flux barrier to cause destructive interference of an impending magnetic field, such that the flux barrier effectively acts to inhibit magnetic flux during motor operation, which in some cases will result in a repulsive force that will act to increase an induced motive force on the rotor poles.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 22, 2021
    Assignee: Tau Motors, Inc.
    Inventors: Matthew J. Rubin, Walter Wesley Pennington, III, Gregory Gordon Stevenson, Adam Daniel Ambrecht, Euzeli Cipriano dos Santos, Jr.
  • Patent number: 10998777
    Abstract: An electric motor includes a stator including four split cores, and a rotor having four magnetic poles. Each of the split cores includes a yoke and a tooth. An angle ?1 [degree] formed by a side surface of the tooth and a side surface of the yoke on an inner side in a radial direction of the stator satisfies 90 degrees??1<180 degrees.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 4, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Yuji Takayama, Keisuke Uemura
  • Patent number: 10944302
    Abstract: A variable-reluctance stator system for use with a radial-flux rotor of a permanent-magnet generator incorporates radially-oriented stator teeth uniformly circumferentially distributed around a central axis, and at least one moveable magnetically-permeable element in magnetic communication with at least one pair of adjacent stator teeth. Radially-inboard edges of the stator teeth are located outside a cylindrical boundary centered about the central axis and configured to receive the radial-flux rotor. Each moveable magnetically-permeable element is axially positionable relative to the stator teeth along an associated positioning axis substantially parallel to the central axis, so as to provide for linking magnetic flux between the pair of adjacent stator teeth via the moveable magnetically-permeable element.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 9, 2021
    Assignee: WILLIAMS INTERNATIONAL CO., L.L.C.
    Inventor: Tristan M. Fletcher
  • Patent number: 10916981
    Abstract: The inventive concept relates to a permanent magnet rotating device having a minimized cogging torque, a permanent magnet generator using the same, and a motor, and more particularly, an objective of the inventive concept is to minimize a cogging torque of a permanent magnet rotating device including a stator and a rotor used in a motor or a generator by a simple combination of the number of poles and the number of slots and a proper arrangement of permanent magnets without using various conventional methods for reducing cogging torque while increasing costs. Through the inventive concept, cogging torque is minimized when a combination of the number of poles and the number of slots are adjusted, the width of lower ends of slots and a spacing distance between the permanent magnets are made the same, and a proper winding method and a pitch are applied.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: February 9, 2021
    Inventor: Soon Chang Roh
  • Patent number: 10897186
    Abstract: The invention relates to a torque motor comprising a stator and a rotor that extend along a common central axis. The stator includes an integral magnetic body and at least one pair of radial teeth that extend along the central axis and define slots for receiving stator windings, and at least one permanent magnet supported by the integral magnetic body. The torque motor also includes a winding support for the stator windings that has a hollow body that extends along the central axis and that delimits a chamber for receiving the rotor, and cavities for receiving the stator windings. In this way, the stator windings are integrated in the stator by the winding support, fitted with the stator windings, being axially inserted into the integral magnetic body.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: January 19, 2021
    Assignee: LIEBHERR-AEROSPACE TOULOUSE SAS
    Inventors: Loïc Verhille, François Ramadour, Raphael Vilamot, Rémi Wojcieszonak
  • Patent number: 10819259
    Abstract: An electric machine is presented. The electric machine includes a stator. The electric machine further includes rotor disposed adjacent to the stator. The rotor includes a rotor core, a plurality of permanent magnets disposed in contact with the rotor core, a plurality of permanent magnets disposed in contact with the rotor core to modulate torque exerted on the rotor.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: October 27, 2020
    Assignee: GE GLOBAL SOURCING LLC
    Inventors: Patel Bhageerath Reddy, Deepak Aravind
  • Patent number: 10734852
    Abstract: A motor includes a stator, a rotor and a case. The rotor includes a first rotor core, a second rotor core, and a field magnet. Each of the first rotor core and the second rotor core includes a core base and a plurality of claw poles. The field magnet is located between the core bases. The case includes a cylindrical yoke housing and a lid. To balance magnetic flux from the first rotor core with magnetic flux from the second rotor core, the distance between the rotor and the stator is varied from the distance between the rotor and the yoke housing or the teeth of the stator are shaped to enable magnetic saturation.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 4, 2020
    Assignee: ASMO CO., LTD.
    Inventors: Koji Mikami, Shigemasa Kato, Yoji Yamada, Seiya Yokoyama
  • Patent number: 10727719
    Abstract: A power generator assembly including a rotating part and a non-rotating part is provided. It is proposed that the rotating part includes first and second, circumferentially adjacent generator units. Each generator unit includes at least one coil, at least one permanent magnet and two pole shoes having pole surfaces facing radially outward. The non-rotating part includes an arc-shaped saddle adaptor of ferromagnetic material arranged with a radial distance to the pole surfaces. The saddle adaptor is configured to close a magnetic circuit passing via the pole shoes through the coil in a rotational position where the saddle adaptor overlaps with the pole shoes of a generator unit. According to the invention, a pole shoe of the first generator unit and an adjacent pole shoe of the second generator unit have the same magnetic polarity.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Gerard McGoogan, Georgo Angelis, Toon Kuijpers, Aditya Mehendale, Gerard Johannes Pieter Nijsse, Funda Sahin Nomaler, Andreas Clemens van der Ham
  • Patent number: 10727718
    Abstract: A rotating part that includes at least one generator unit having at least one coil, at least one permanent magnet and two pole shoes having pole surfaces facing radially outward is provided, The non-rotating part has an arc-shaped saddle adaptor of ferromagnetic material arranged with a radial distance to the pole surfaces. The saddle adaptor is configured to close a magnetic circuit passing via the pole shoes through the coil in a rotational position where the saddle adaptor overlaps with the pole shoes of the generator unit.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Gerard McGoogan, Georgo Angelis, Toon Kuijpers, Andreas Clemens van der Ham
  • Patent number: 10714993
    Abstract: A rotor includes a cylindrical a rotor core having a plurality of magnet insertion holes extending along a central axis of the cylindrical shape and permanent magnets inserted into the magnet insertion holes, respectively. A slit extending along the central axis is provided between an outer circumferential surface of the rotor core and at least one of the magnet insertion holes. The slit inner lines extend toward the outer circumferential surface of the rotor core from the apex of the slit, the apex being located on a side of the magnet insertion holes. The slit outer line connects side ends of the slit inner lines located on a side opposite to the apex.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Masahiro Nigo
  • Patent number: 10686354
    Abstract: A rotary electrical machine includes: a rotary electrical machine having a stator and a rotor; and a control device. The rotor includes: a field core having a boss part and claw-shaped magnetic pole parts; a field winding that is wound on the boss part; and permanent magnets that are arranged between the claw-shaped magnetic pole parts. A d-axis magnetic circuit formed by magnetomotive force of the field winding and at least part of first and second magnet magnetic circuits formed by magnetic force of the permanent magnets are shared. When an electrical load is connected to the rotor, a permeance Prt of the d-axis magnetic circuit is set to be smaller than a permeance Pst of the q-axis magnetic circuit. The control device performs phase control such that the rotary electrical machine performs either power running or regeneration.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: June 16, 2020
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 10608515
    Abstract: A synchronous motor includes: a stator core formed by stacking, in the axial direction, magnetic steel sheets stamped into a specific shape; and a cylindrical permanent magnet having magnetic poles formed on its outer circumferential surface and having polar anisotropic orientation corresponding to the number of magnetic poles. The permanent magnet is longer than the stator core in an axial direction. Grooves are formed in a portion of an outer circumferential surface of the permanent magnet that is opposed to the stator core and in a portion of the outer circumferential surface of the permanent magnet that is not opposed to the stator core and is located only on one side in the axial direction, and the grooves extends in the axial direction and are formed at a fixed interval in a rotation direction at an inter-magnetic pole portion.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: March 31, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Matsuoka, Hiroyuki Ishii, Hiroki Aso, Yuto Urabe
  • Patent number: 10505413
    Abstract: An interior permanent magnet motor includes a stator comprising a hollow and a plurality of coils provided around the hollow; and a rotor rotatably disposed in the hollow of the stator and comprising a plurality of permanent magnets therein. Each of the plurality of permanent magnets of the rotor comprises a central permanent magnet; a pair of side permanent magnets provided at opposite ends of the central permanent magnet to be inclined toward an outer circumferential surface of the rotor; and a pair of bathers provided between the central permanent magnet and the pair of side permanent magnets, a thickness of each of the pair of bathers is equal to or greater than a thickness of the central permanent magnet. The thickness of the central permanent magnet is greater than a thickness of each of the pair of side permanent magnets.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 10, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-taek Lim, Sung-il Kim, Hyung-chul Lee, Jun-seok Kim, Tae-ho Yoon
  • Patent number: 10498274
    Abstract: An electric power system (EPS) may comprise a modular multilevel converter (MMC) and a synchronous generator in electronic communication with the MMC. The synchronous generator may comprise a stator comprising inner slots and outer slots. First, second, and third windings may be disposed in the inner slots configured to receive first, second, and third phase signals, respectively. The first, second, and third windings may each split into two arms, each arm comprising an additional winding disposed in the outer slots of the stator.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: December 3, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jacek F Gieras, Gregory I Rozman, Steven J Moss
  • Patent number: 10454328
    Abstract: The present invention relates to a high performance rotating electrical machine which aims at downsizing, and challenges inevitable technical problems such as deterioration of efficiency ? caused by copper loss and temperature rise inside the rotating electrical machine due to heat generation induced by eddy current generated in a magnetic body.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: October 22, 2019
    Assignee: M-LINK CO., LTD.
    Inventors: Manabu Shiraki, Shuichi Omomo
  • 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: 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: 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: 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