Spaced-segment Core Patents (Class 310/216.109)
  • Patent number: 10224767
    Abstract: In one aspect of the invention for which protection is sought there is provided an electric machine comprising a substantially circular rotor and a stator, wherein the stator comprises at least one substantially arcuate segment. Aspects of the invention also relate to a stator segment comprising at least one inter-pole shield disposed between adjacent teeth. Further aspects of the invention also relate to a stator segment having a first shield disposed at a first circumferential end thereof and/or a second shield disposed at a second circumferential end thereof. Aspects of the invention also relate to a stator segment having a radially outwardly directed protuberance.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: March 5, 2019
    Assignee: Jaguar Land Rover Limited
    Inventors: Alexandros Michaelides, Xavier Vinamata, Jose Soler
  • Patent number: 9013082
    Abstract: A rotating machine is provided, including a rotor and a stator set. The rotor rotates around an axis, wherein the rotor includes a first permanent magnet set and a second permanent magnet set, the first permanent magnet set is magnetized in a circumference direction of the axis, and the second permanent magnet set is magnetized in an axial direction of the axis. The stator set corresponds to the rotor, wherein the stator set includes a radial stator member and an axial stator member, the axial stator member corresponds to the rotor in the axial direction of the axis, and the radial stator member corresponds to the rotor in a radial direction of the axis.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: April 21, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Xiao Ge, Jian-Ping Ying, Hong-Cheng Sheu, Hongliu Zhu
  • Patent number: 9000650
    Abstract: The invention relates to a laminated core for electromagnetic applications with at least two segments (2), of which at least one on a side-edge (11), comprises an engagement groove (12) and the other at an opposite side-edge (9) comprises a corresponding engagement projection (10), via which the two segments (2) are connected to one another into a component, wherein the engagement groove (12) comprises an undercut in the form of a widened section (26) distanced to the groove opening, and the engagement projection (10) and the engagement groove (12) are dimensionally matched to one another in a manner such that the engagement projection (10) and/or engagement groove (12) are plastically deformed by way of inserting the engagement projection (10) into the engagement groove (12), so that the engagement projection (10) engages into the widened section (26) of the engagement groove (12), as well as to a method for the manufacture of such a laminated core.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: April 7, 2015
    Assignee: Grundfos a/s
    Inventors: Niels Kristian Bach Andersen, Brian Lundsted Poulsen, Thomas Blad, Kjeld Hellegaard
  • Publication number: 20140091673
    Abstract: The present invention relates a stator segment for an electrical machine, comprising a plurality of windings, each winding having a winding starting and ending point, and a stator yoke with a plurality of stator slots for receiving at least one stator winding, said segment having a first side and a second side. At least one winding having its starting point at the first side, and its ending point at the first side of the segment, the at least one winding is received in one or more stator slots.
    Type: Application
    Filed: November 6, 2011
    Publication date: April 3, 2014
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Ramasamy Anbarasu, Mohamed Osama, Raphael Neumann
  • Patent number: 8618711
    Abstract: A three-phase DC motor includes a rotor 30 having poles 30a and a stator 28 having core units 32b arranged around the rotor 30. Three or more coils are wound around the core units 32b. An outer surface of the rotor 30 has alternating poles of N and S around the circumference of the rotor 30. The coils 35a, 35b, 35c, and 35d are placed only within a range defined by second virtual planes P2 specified respectively by rotating a first virtual plane P1 according to a predetermined angle in a rotor rotating direction and a direction opposite thereto. The first virtual plane P1 passes through the axial center of the rotor 30. The inner surface of the adjacent 3N (N=1, 2, 3, . . . ) number of core units 32b are delimited within a width of one pole on the outer surface of the rotor 30.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 31, 2013
    Assignee: Nabtesco Corporation
    Inventor: Yasuyuki Shirai
  • Patent number: 8575817
    Abstract: Rotor and stator segments for a generator and motor apparatus are provided. The apparatus includes: a pair of parallel, spaced apart stator segments, each stator segment comprising a stator winding set; and a rotor segment slidably coupled to the pair of stator segments, the rotor segment comprising a magnet and being dimensioned to fit between the parallel, spaced apart stator segments. The apparatus may include a support structure, the rotor segment being slidably coupled to the support structure and the stator segment being attached to the support structure. The apparatus may be a rim generator, wind turbine generator or other electrical machine. The stator winding set includes a stator winding, and may include other electrical or electronic components, including possibly a power factor capacitor, direct current filtering capacitor, supercapacitor, and one or more diodes. The stator winding set may be encapsulated within the stator segment.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: November 5, 2013
    Assignee: Clean Current Limited Partnership
    Inventors: Mihai C. Platon, Virgil F. Young
  • Publication number: 20130187505
    Abstract: A rotor having a dividable core for an electric motor, and a production method thereof. A rotor has a generally annular supporting member; a plurality of shaft portions positioned on the supporting member in a circumferential direction at regular intervals, the shaft portions extending generally parallel to a rotation axis of the rotor; and a plurality of divided cores each having a hole portion which is fitted to each shaft portion. By annularly connecting the divided cores, a generally annular dividable core for the rotor is formed. Each divided core has connecting portions at both circumferential ends thereof, and each connecting portion is configured to be connected to a connecting portion of a neighboring divided core while the divided core is fitted to the shaft portion.
    Type: Application
    Filed: November 28, 2012
    Publication date: July 25, 2013
    Applicant: FANUC CORPORATION
    Inventor: FANUC CORPORATION
  • Patent number: 8319389
    Abstract: An electric machine and stator assembly includes a segmented stator having stator portions. Each stator portion includes stator laminations, end plates arranged axially on opposing sides of the stator portion, and structural plates arranged interior to the end plates. Each of the support plates has a portion with notch-like structures that is embedded within the stator laminations. Stabilizing couple the end plates and the structural plates together. Connectors are provided to connect the stator portions together.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Kiruba Sivasubramaniam Haran, James Pellegrino Alexander, Jay Zhiqiang Cao, Evangelos Trifon Laskaris, Murtuza Lokhandwalla, Jeremy Daniel Van Dam, Robert Michael Zirin
  • Patent number: 8129881
    Abstract: A ring motor (1) as a direct drive, particularly for vertical mills or rod mills, has a stator (6) and a rotor (12) configured as a rotating milling body (10), wherein the stator (6) has at least two different excitation systems, and the milling body (10) has only a toothed structure, which electromagnetically interacts with the excitation systems of the stator (6) and thus brings about a rotation of the milling body (10).
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: March 6, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Markus Hösle
  • Patent number: 8044551
    Abstract: A stator for an electric motor is provided. The stator includes segmented cores each having one yoke and at least one pole protruding from the yoke in a radial direction, bobbins formed to receive the at least one pole therein, having blocking walls that extend from one side of ends of the at least one pole in a circumferential direction thereby to block a space between the at least one pole, and coupled to the at least one pole, and stator coils wound on the bobbins. A temperature of the segmented cores and the stator coils are prevented from rising and a noise occurrence is reduced.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: October 25, 2011
    Assignee: LG Electronics Inc.
    Inventor: Sang-Young Kim
  • Publication number: 20100289363
    Abstract: A rotating electromagnetic machine has a tubular axle with mounting rings, a common ring, a coil input ring, and at least one bearing set mounted on it. A fitting is secured at a distal end of the tubular axle, and a commutator is secured at the proximal end. A housing is mounted on the bearing sets through adaptors. Connecting bars extend axially within the axle with lateral rods joined to the connecting bars at their distal ends, the bars commuting between segments of the commutator electromagnetic coils. A plurality of the electromagnetic coils are secured to the coil input ring. The coils are formed of spiral turns of a single flat strip electrically conductive material. A plurality of peripheral and sector magnets are mounted adjacent to the electromagnetic coils with electromagnetic interaction when relative motion occurs between the coils and the magnets.
    Type: Application
    Filed: July 9, 2008
    Publication date: November 18, 2010
    Inventor: Dumitru Bojiuc
  • Publication number: 20100285702
    Abstract: An apparatus is disclosed for a hybrid electric power system for use in a multi-wheeled hybrid electric vehicle, and particularly for use in hybrid electric vehicles designed for operation in hostile environments where reliability and survivability of the propulsion system of the vehicle are important. The hybrid electric power system advantageously comprises at least one segmented electrical machine having multiple pairs of parallel stator segments with a magnetic rotor segment between each pair, for generating power from a thermodynamic engine, or for providing power to a driven wheel of the hybrid electric vehicle. A hybrid electric power system is also provided which comprises at least one distributed segmented electrical machine which comprises a distributed electrical energy storage system.
    Type: Application
    Filed: December 19, 2008
    Publication date: November 11, 2010
    Applicant: CLEAN CURRENT POWER SYSTEMS INCORPORATED
    Inventor: Mihai C. Platon
  • Patent number: 7679256
    Abstract: A rotary electric machine capable of effectively utilizing both end faces of a rotor in the rotating axis direction by suppressing magnetic saturation comprises a stator having axial parts (31) and (32) and a radial part. The axial part (31) comprises cores (311) to (314) and coils (321) to (324), and the axial part (32) comprises cores (312) to (315) and coils (322) to (325). The radial part comprises cores (332) to (337) and coils (352) to (357). The width of each of the cores (311) to (315) in the circumferential direction is twice the width of each of the cores (332) to (337) in the circumferential direction. The number of windings of each of the coils (321) to (325) is equal to the number of windings of each of the coils (352) to (357).
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: March 16, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazutaka Tatematsu, Ryoji Mizutani, Yasuhiro Endo, Yasuhide Yagyu, Nobuyuki Matsui, Yoshiaki Kano
  • Publication number: 20100007225
    Abstract: A generator or motor apparatus having a stator formed of a plurality of pairs of parallel stator segments is provided The pairs of parallel segments are connected together to form a channel in which an annular rotor moves The annular rotor also comprises a plurality of detachable segments connected together to form an annular tram operable to move through said channel Each stator segment comprises a stator winding set and each rotor segment comprises a magnet dimensioned to fit between the parallel spaced apart stator segments The apparatus may include a support structure, the rotor segments being slidably coupled to the support structure and the stator segments being attached the support structure The apparatus may be a rim generator, wind turbine generator or other electrical machine The stator winding set includes a winding, and may include other electrical or electronic components, including possibly a power factor capacitor, direct current filtering capacitor, supercapacitor, and one or more diodes The s
    Type: Application
    Filed: February 7, 2007
    Publication date: January 14, 2010
    Applicant: CLEAN CURRENT POWER SYSTEMS INCORPORATED
    Inventors: Mihai C. Platon, Virgil F. Young
  • Patent number: 7646130
    Abstract: A stator assembly is provided for an electric motor having a longitudinal axis. The stator assembly includes at least one stator segment having a first end member having a stator tooth and at least one of a stator shoe and a back iron. A second end member is positioned with respect to the first end member and has a stator tooth and at least one of a stator shoe and a back iron. A winding generally circumscribes the stator tooth of the first end member and the stator tooth of the second end member. The first and second end members have a parting line generally perpendicular to the longitudinal axis of the motor. A motor incorporating the stator assembly of the present invention is disclosed. Additionally, a method of forming the stator assembly of the present invention is described.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: January 12, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Alan G. Holmes, Richard A. Ordo, Ahmed M. El-Antably
  • Publication number: 20090273245
    Abstract: A stator core is formed by arranging divided cores (20) in a circumference direction in cylindrical shape. On an upper end surface (60) of a core back (50) of the divided core, holes (62, 64) are made. Then, on the upper end surface, a reinforcing ring (40) having through holes (66, 68) is arranged, and is connected with rivets (70, 72). Thus, stress is transmitted not only through a side surface (58) but also through the reinforcing ring (40), between the adjacent divided cores. Thus, strength of the stator using a powder magnetic core is ensured and a space is saved.
    Type: Application
    Filed: June 14, 2007
    Publication date: November 5, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yasuhiro Endo, Kazutaka Tatematsu, Yutaka Komatsu
  • Publication number: 20090267443
    Abstract: A stator for an electric motor comprises: a plurality of segmented cores each having one yoke and at least one pole protruding from the yokes in a radial direction; a plurality of bobbins formed to receive the poles therein, having blocking walls extending from one side of ends of the poles in a circumferential direction thereby to block a space between the poles, and coupled to the poles; and stator coils wound on the bobbins. Accordingly, the temperature of the stator core and the stator coil are prevented from rising, and a noise occurrence is reduced. Also, a winding operation for the stator coil and a manufacturing process are facilitated.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 29, 2009
    Inventor: Sang-Young Kim
  • Publication number: 20090243424
    Abstract: A gap winding motor includes a stator and a rotor. The stator includes a stator core and air-core coils for generating a rotating magnetic field which are attached to an inner peripheral surface of the stator core. The rotor is disposed so as to face the stator with an air gap therebetween. A stator core is divided into two core portions in an axial direction of the motor, and a spacer is disposed between the core portions. A unique air-gap section is provided between the core portions, and coil terminal processes are performed in the air-gap section between the core portions.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 1, 2009
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kazuya WATANABE, Masahiko Tanabe