Spaced-segment Core Patents (Class 310/216.109)
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Patent number: 11196307Abstract: The present invention relates to an electromagnetic assembly of polyphase structure, said assembly including: a yoke comprising an electromagnetic body; a plurality of spaced-apart blocks that protrude with respect to one of the carrier faces of the yoke and that are arranged, consecutively, along the periphery of the carrier face of the yoke; and at least one winding that is associated with the blocks, wherein there is only one yoke, the plurality of blocks is arranged in at least two groups of blocks (A, B, C) in which two consecutive blocks of a given group of blocks (A, B, C) are spaced apart by an inter-block distance (E), and each group of blocks (A, B, C) is separated from the adjacent group of blocks (A, B, C) by an inter-group distance (D) that is different from the inter-block distance (E).Type: GrantFiled: December 27, 2017Date of Patent: December 7, 2021Assignees: FRANCECOL TECHNOLOGY, ZODIAC ACTUATION SYSTEMS, MBDA FRANCEInventor: Francois Bernot
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Patent number: 11146123Abstract: A method of making a stator module for use in a stator assembly of an electric machine includes temporarily supporting a plurality of stator segments in a desired orientation using a temporary support. The desired orientation of the stator segments is a relative orientation of the stator segments within the stator module. A mold is placed around the plurality of stator segments and the mold is filled with a potting material to form a stator module such that the potting material supports the stator segments in their desired orientation. The temporary support is removed.Type: GrantFiled: January 31, 2013Date of Patent: October 12, 2021Assignee: GREEN RAY TECHNOLOGIES, LLCInventors: Ramon Anthony Caamaño, Hector Luis Moya, Jeffrey Wayne Harris, Robert R. Ferber
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Patent number: 11139727Abstract: The present invention relates to a permanent magnet electrical machine, and more particularly, to a permanent magnet electrical machine for reducing a detent force, the machine being capable of reducing a detent force by arranging a plurality of movers having the same teeth at predetermined intervals. In addition, according to the present invention, the permanent magnet electrical machine comprising a stator and a plurality of movers configured to perform linear motion, curvilinear motion, or rotary motion with respect to the stator is provided.Type: GrantFiled: December 21, 2017Date of Patent: October 5, 2021Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTEInventors: Shi Uk Chung, Jong Moo Kim
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Patent number: 10224767Abstract: 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: GrantFiled: November 20, 2013Date of Patent: March 5, 2019Assignee: Jaguar Land Rover LimitedInventors: Alexandros Michaelides, Xavier Vinamata, Jose Soler
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Patent number: 9013082Abstract: 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: GrantFiled: September 20, 2011Date of Patent: April 21, 2015Assignee: Delta Electronics, Inc.Inventors: Xiao Ge, Jian-Ping Ying, Hong-Cheng Sheu, Hongliu Zhu
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Patent number: 9000650Abstract: 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: GrantFiled: April 15, 2005Date of Patent: April 7, 2015Assignee: Grundfos a/sInventors: Niels Kristian Bach Andersen, Brian Lundsted Poulsen, Thomas Blad, Kjeld Hellegaard
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Publication number: 20140091673Abstract: 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: ApplicationFiled: November 6, 2011Publication date: April 3, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: Ramasamy Anbarasu, Mohamed Osama, Raphael Neumann
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Patent number: 8618711Abstract: 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: GrantFiled: January 18, 2012Date of Patent: December 31, 2013Assignee: Nabtesco CorporationInventor: Yasuyuki Shirai
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Patent number: 8575817Abstract: 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: GrantFiled: June 27, 2012Date of Patent: November 5, 2013Assignee: Clean Current Limited PartnershipInventors: Mihai C. Platon, Virgil F. Young
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Publication number: 20130187505Abstract: 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: ApplicationFiled: November 28, 2012Publication date: July 25, 2013Applicant: FANUC CORPORATIONInventor: FANUC CORPORATION
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Patent number: 8319389Abstract: 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: GrantFiled: August 30, 2010Date of Patent: November 27, 2012Assignee: General Electric CompanyInventors: Kiruba Sivasubramaniam Haran, James Pellegrino Alexander, Jay Zhiqiang Cao, Evangelos Trifon Laskaris, Murtuza Lokhandwalla, Jeremy Daniel Van Dam, Robert Michael Zirin
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Patent number: 8129881Abstract: 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: GrantFiled: January 16, 2008Date of Patent: March 6, 2012Assignee: Siemens AktiengesellschaftInventor: Markus Hösle
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Patent number: 8044551Abstract: 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: GrantFiled: September 19, 2007Date of Patent: October 25, 2011Assignee: LG Electronics Inc.Inventor: Sang-Young Kim
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Publication number: 20100289363Abstract: 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: ApplicationFiled: July 9, 2008Publication date: November 18, 2010Inventor: Dumitru Bojiuc
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Publication number: 20100285702Abstract: 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: ApplicationFiled: December 19, 2008Publication date: November 11, 2010Applicant: CLEAN CURRENT POWER SYSTEMS INCORPORATEDInventor: Mihai C. Platon
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Patent number: 7679256Abstract: 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: GrantFiled: June 10, 2005Date of Patent: March 16, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazutaka Tatematsu, Ryoji Mizutani, Yasuhiro Endo, Yasuhide Yagyu, Nobuyuki Matsui, Yoshiaki Kano
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Publication number: 20100007225Abstract: 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 sType: ApplicationFiled: February 7, 2007Publication date: January 14, 2010Applicant: CLEAN CURRENT POWER SYSTEMS INCORPORATEDInventors: Mihai C. Platon, Virgil F. Young
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Patent number: 7646130Abstract: 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: GrantFiled: April 26, 2006Date of Patent: January 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Alan G. Holmes, Richard A. Ordo, Ahmed M. El-Antably
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Publication number: 20090273245Abstract: 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: ApplicationFiled: June 14, 2007Publication date: November 5, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yasuhiro Endo, Kazutaka Tatematsu, Yutaka Komatsu
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Publication number: 20090267443Abstract: 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: ApplicationFiled: September 19, 2007Publication date: October 29, 2009Inventor: Sang-Young Kim
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Publication number: 20090243424Abstract: 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: ApplicationFiled: June 11, 2009Publication date: October 1, 2009Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Kazuya WATANABE, Masahiko Tanabe