Transverse Flux Patents (Class 310/156.02)
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Patent number: 11827371Abstract: An electrical power system for an aircraft includes a DC:AC power electronics converter and a transverse flux electrical machine. The transverse flux electrical machine includes a rotor that is coupleable to a rotating shaft of a propulsor of the aircraft, wherein the rotor includes a plurality of permanent magnets defining a number, NP, of evenly distributed rotor poles. The transverse flux electrical machine further includes a stator arranged to interact with the rotor, such that a torque is produced. The stator includes a plurality of coils.Type: GrantFiled: May 24, 2023Date of Patent: November 28, 2023Assignee: Rolls-Royce Deutschland Ltd & Co KGInventors: Ellis F H Chong, Andreas Reeh, Johannes Gabriel Bauer, Anton Rudenko
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Patent number: 11522396Abstract: A rotor includes: a rotor core; a plurality of plate-shaped magnets forming multiple poles, each arranged in the rotor core with a pair of magnetic pole faces thereof being positioned in a direction intersecting with the radial direction of the rotor core; and a plurality of voids formed in the rotor core, each arranged in contact with the magnetic pole face that is located on a side closer to the central axis of the rotor core, of each of the magnets forming multiple poles.Type: GrantFiled: June 17, 2020Date of Patent: December 6, 2022Assignee: FANUC CORPORATIONInventor: Yohei Kamiya
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Patent number: 11418076Abstract: An electric machine rotor includes a core, a first end plate, a second end plate, and a shaft. The core defines an internal cavity. The first and second end plates each define a central orifice and are respectively secured to opposing axial ends of the core. The shaft is disposed within the cavity and engages the first and second end plates within the central orifices to facilitate synchronized rotation of and torque transfer between the core and shaft.Type: GrantFiled: June 26, 2018Date of Patent: August 16, 2022Assignee: Ford Global Technologies, LLCInventors: Chun Tang, Cyrille Goldstein, Jacob Krizan
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Patent number: 11183893Abstract: A rotary electric device includes a stator, and a rotor including a rotor core having magnetic poles and permanent magnets at the magnetic poles. Each of two embedding holes in each magnetic pole includes a loading region in which the permanent magnet is loaded, an inner periphery-side gap, and an outer periphery-side gap. Defining D as the minimum distance from the outer periphery-side gap to an outer peripheral surface of the rotor core, Was the width of a teeth of the stator, H0 as the sum of the magnetomotive forces generated in the portion corresponding to a magnetic pole angle ? in one magnetic pole, and H1 as the magnetomotive force generated in one tooth, the rotor core is formed such that D?W×(H0/H1).Type: GrantFiled: December 19, 2019Date of Patent: November 23, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventors: Masakatsu Matsubara, Takashi Hanai, Hideki Hisada, Yusuke Matsuoka
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Patent number: 11005319Abstract: An electrical machine (10) for driving a vehicle comprises: a stator (14) having stator grooves (34) running axially and running uniformly around an axis of the electrical machine (10), through which grooves a stator winding (42) runs; and a rotor (12) with axially running poles (16), which rotor is mounted inside the stator (14) for rotation around the axis of the electrical machine (10), wherein two pole magnets (20) with rectangular cross-section are arranged in each pole (16) of the rotor (12) in an axially running pole opening (18) forming a V in respect of one another. The electrical machine (10) is optimized with respect to a plurality of geometrical parameters which have been optimized by optimization of optimization parameters which are determined from the geometric parameters.Type: GrantFiled: September 13, 2017Date of Patent: May 11, 2021Assignee: Robert Bosch GmbHInventors: Mickael Kremer, Sebastian Tabarelli, Johannes Riedl
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Patent number: 10658886Abstract: A rotor for a machine includes a plurality of rotor segments, each rotor segment forming a rotor pole and having two permanent magnets interior to the rotor to direct magnetic flux from the permanent magnets through one rotor pole of one rotor segment, through an air gap of a rotor-stator interface between the rotor and the stator, and through a stator pole, wherein at least one rotor segment comprises a saturatable bridge section comprising a structural arch to cause permanent magnet flux from at least one rotor permanent magnet to traverse through an air region of the rotor to core material of the rotor.Type: GrantFiled: November 6, 2017Date of Patent: May 19, 2020Assignee: QM Power, Inc.Inventor: Charles J. Flynn
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Patent number: 10483891Abstract: Embodiments herein relate to a permanent magnet (PM) dynamoelectric machine. The machine includes a drive shaft, a PM rotor assembly with multiple PMs arranged around a periphery of the rotor assembly, a first stator assembly including a stator yoke, having stator teeth mounted to the stator core with distal ends proximate the outer periphery of the rotor assembly separated by a first air gap and multiple stator coils mounted between the stator teeth. The machine also includes a second stator assembly including a stator yoke, having stator teeth mounted to the stator core with distal ends forming closed slots, proximate an inner periphery of the rotor assembly separated by a second air gap and at least one control coil, the a control coil wrapped about a saturable region of the stator teeth thereof, each saturable region is operable to divert magnetic flux of the PMs through the stator teeth.Type: GrantFiled: January 6, 2017Date of Patent: November 19, 2019Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: Jacek F. Gieras
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Patent number: 10432076Abstract: A hybrid electric machine includes N phases (N?1), each phase having first and second assemblies movable relative to one another and each having a set of teeth made up of a number of teeth that are equally distributed according to a plurality of periods, in which: a. the first assembly is made up of two magnetized parts, each including a magnet magnetically coupled with two toothed yokes, the magnet of one of the magnetized parts being polarized along the same axis but in the opposite direction to the polarization of the magnet of the second magnetized part; b. the second assembly including at least two toothed zones with pitches identical to the pitch of the toothed yokes; c. one of the assemblies has at least two sets of teeth in phase, and the other assembly has at least two sets of teeth which are out of phase by a half-period.Type: GrantFiled: March 19, 2015Date of Patent: October 1, 2019Assignee: MMT SAInventors: Arnaud Hyppias, Hubert Poinceau
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Patent number: 10027189Abstract: According to an embodiment, an electric rotating machine includes a rotor element, an annular coil, a plurality of stator cores, and a plurality of wedge members. The rotor element is rotatable around a rotation axis. The coil is provided to be coaxial with the rotation axis. The plurality of stator cores are provided opposite to the rotor element and each includes a pair of magnetic pole parts opposing each other with the coil being interposed therebetween. Each of the plurality of wedge members is arranged between adjacent stator cores to apply preloads to the adjacent stator cores, the preloads containing components in a rotation direction of the rotor element and being opposite to each other.Type: GrantFiled: May 29, 2015Date of Patent: July 17, 2018Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Takahashi, Takahiro Kokubo, Yasuhito Ueda
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Patent number: 9755492Abstract: The invention concerns a rotatable transverse flux electrical machine (TFEM) comprising a stator portion; and a rotor portion rotatably located in respect with the stator portion, the rotor portion including an alternate sequence of magnets and concentrators radially disposed about a rotation axis thereof; the stator portion including at least one phase, the at least one phase including a plurality of cores cooperating with a coil disposed about the rotation axis, each core including a skewed pair of poles to progressively electromagnetically engage an electromagnetic field of respective cooperating concentrators. The invention is also concerned with a plurality of elements located in desired positions in the TFEM and also with a linear TFEM.Type: GrantFiled: August 1, 2013Date of Patent: September 5, 2017Assignee: EOCYCLE TECHNOLOGIES INC.Inventors: Raphael Nadeau, Daniel Massicotte, Eric Adams, Simon Cote, Patrice Fortin, Jean-Francois Bernier-Synnott
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Patent number: 9748804Abstract: An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level.Type: GrantFiled: October 12, 2016Date of Patent: August 29, 2017Assignee: Genesis Robotics LLPInventor: James Brent Klassen
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Patent number: 9742228Abstract: An electric machine, such as an Internal Permanent magnet or Synchronous Reluctance machine, having X phases, that includes a stator assembly, having M slots, with a stator core and stator teeth, that is further configured with stator windings to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface that defines a cavity; and a rotor assembly, having N poles, disposed within the cavity which is configured to rotate about the longitudinal axis, wherein the rotor assembly includes a shaft, a rotor core located circumferentially around the shaft. The machine is configured such that a value k=M/(X*N) wherein k is a non-integer greater than about 1.3. The electric machine may alternatively, or additionally, include a non-uniformed gap between the exterior surface of the rotor spokes and the interior stator surface of the stator.Type: GrantFiled: October 18, 2013Date of Patent: August 22, 2017Assignee: GENERAL ELECTRIC COMPANYInventors: Patel Bhageerath Reddy, Kum-Kang Huh, Ayman Mohamed Fawzi El-Refaie, Steven Joseph Galioto
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Patent number: 9722479Abstract: The invention concerns a windmill including a rotatable transverse flux electrical machine (TFEM) comprising a stator portion; and a rotor portion rotatably located in respect with the stator portion, the rotor portion including an alternate sequence of magnets and concentrators radially disposed about a rotation axis thereof; the stator portion including at least one phase, the at least one phase including a plurality of cores cooperating with a coil disposed about the rotation axis, each core including a skewed pair of poles to progressively electromagnetically engage an electromagnetic field of respective cooperating concentrators. The invention is also concerned with a plurality of elements located in desired positions in the TFEM.Type: GrantFiled: August 1, 2013Date of Patent: August 1, 2017Assignee: EOCYCLE TECHNOLOGIES INC.Inventors: Raphael Nadeau, Daniel Massicotte, Eric Adams, Simon Cote, Patrice Fortin, Jean-Francois Bernier-Synnott
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Patent number: 9559560Abstract: A modular stator adapted to be used in a transverse flux electrical machine (TFEM) includes a plurality of phase modules comprising respective halves sized and designed to receive therein a plurality of cores about a rotational axis. The phase modules are adapted to be assembled together to produce a multi-phase stator and disassembled to replace or maintain a phase module. The phase modules are configured to be angularly shifted from one another to produce a multi-phase TFEM. A TFEM phase assembly and a kit of phases components sized and designed to assemble a multi-phase stator are also encompassed by the present application.Type: GrantFiled: September 23, 2013Date of Patent: January 31, 2017Assignee: EOCYCLE TECHNOLOGIES INC.Inventors: Raphael Nadeau, Daniel Massicotte, Eric Adams, Simon Cote, Patrice Fortin, Jean-Francois Bernier-Synnott
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Patent number: 9543792Abstract: According to one embodiment, a rotary electric machine includes a rotor that is rotatable at a predetermined position and includes a plurality of first magnetic members arranged along an outer circumferential surface, the first magnetic members each including a first magnetic pole and a second magnetic pole. The rotary electric machine includes a first supporting member that surrounds a periphery of the rotor. The rotary electric machine includes a plurality of second supporting members that are fixed to an inner circumferential surface of the first supporting member. The rotary electric machine includes a plurality of second magnetic members that are fixed on side surfaces of the second supporting members and that have a third magnetic pole facing the first magnetic pole with an air gap and a fourth magnetic pole facing the second magnetic pole with an air gap.Type: GrantFiled: September 11, 2014Date of Patent: January 10, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Takahashi, Yasuhito Ueda
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Patent number: 9407116Abstract: A multi-gap type rotary electric machine is provided, where the machine is provided a shaft supported rotatably by a baring secured to a housing. An annular rotor is secured to the shaft and configured to rotate together with the shaft. Double stators are secured to the housing and configured to have gaps between the stators and the rotor. Relationships of: 3.5<P13/P6 ??(1) and P7/P6>0.5 ??(2) are met, where P6 denotes a circumferential width of each of outer salient poles, P7 denotes a circumferential width of each of inner salient poles, and P13 denotes a circumferential width of each of the outer magnets.Type: GrantFiled: December 9, 2013Date of Patent: August 2, 2016Assignee: DENSO CORPORATIONInventors: Keiji Kondou, Shin Kusase, Takeo Maekawa
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Patent number: 9006951Abstract: Electrical machines, for example transverse flux machines and/or commutated flux machines, may be “balanced” to achieve reduced overall cogging torque via utilization of one or more cogging torque reduction devices. Cogging torque reduction devices may be configured and/or otherwise customized in order to reduce and/or minimize cogging torque in an electrical machine, by generating a counteracting cogging torque waveform that at least partially counteracts and/or cancels the initial cogging torque waveform of the electrical machine.Type: GrantFiled: June 28, 2012Date of Patent: April 14, 2015Assignee: Electric Torque Machines IncInventors: Thomas F. Janecek, John M Dyer, Tyler K. Williams
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Patent number: 8994243Abstract: An electrical machine stator assembly comprises: an electroconductive coil arranged circumferentially with respect to the rotational axis; a plurality of pairs of side lamination assemblies arranged circumferentially with respect to the rotational axis; a plurality of pairs of switch lamination assemblies arranged circumferentially with respect to the rotational axis and positioned adjacent ends of side lamination assemblies proximal the rotor; and at least one tooth associated with each switch lamination assembly and proximal the rotor. Each switch lamination assembly comprises a first group of laminated materials aligned generally circumferentially and generally in a first direction with respect to the rotational axis, the first direction being one selected from the group consisting of the axial and radial directions with respect to the rotational axis.Type: GrantFiled: November 7, 2012Date of Patent: March 31, 2015Assignee: Electric Torque Machines IncInventors: David G. Calley, John M. Dyer, Thomas F. Janecek, Tyler K. Williams
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Patent number: 8994239Abstract: An axial flux Halbach rotor comprise: a first magnet set and a second magnet set. Further comprises: a plurality of first magnets that are respective featured by their respective first magnetizing directions and are arranged interconnecting to each other by the use of a first connecting element while allowing any two neighboring first magnets to be spaced from each other by a first distance; and the second magnet set further comprises: a plurality of second magnets that are respectively featured by their respective second magnetizing directions and are arranged interconnecting to each other by the use of a second connecting element while allowing any two neighboring second magnets to be spaced from each other by a second distance. In addition, the first magnet set and the second magnet set are arranged inlaid into each other while allowing the plural first magnets and the plural second magnets to be dispose alternatively.Type: GrantFiled: March 11, 2013Date of Patent: March 31, 2015Assignee: Industrial Technology Research InstituteInventors: Wen-Yang Peng, Han-Ping Yang, Cheng-Hsuan Lin, Chau-Shin Jang
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Publication number: 20140361653Abstract: An electrical machine includes a rotor comprising a rotor core and a plurality of permanent magnets embedded radially within the rotor core to form a plurality of rotor poles. The electrical machine further includes a stator comprising a stator core disposed concentrically outside the rotor and including a plurality of stator teeth defining a plurality of stator slots there between. An arithmetic sum or difference of twice the number of stator teeth and the number of the stator poles equals the number of rotor poles.Type: ApplicationFiled: August 22, 2014Publication date: December 11, 2014Inventors: Patrick Lee Jansen, Ronghai Qu
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Publication number: 20140354101Abstract: A rotor is formed with a partition wall interposed between a first magnetic body and a second magnetic body. Projections of the partition wall block gaps between salient poles of the first magnetic body and salient poles of the second magnetic body which are arranged at shifted positions when seen in an axial direction of a rotating shaft to shield a flow of air flowing in the axial direction. Notches are formed in parts other than the gaps to decrease a volume thereof and to reduce inertia thereof.Type: ApplicationFiled: April 10, 2012Publication date: December 4, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Goto, Hideaki Arita, Kanji Shinkawa, Akihiro Daikoku
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Publication number: 20140306568Abstract: Various configurations of an electrometric turbine are discussed. In one possible arrangement the turbine is a radial drum type turbine 1800 and includes a pair of opposing magnetic assemblies 18011, 18012 with drum 1802 positioned therebetween. Each of the magnetic assemblies 18011, 18012 includes a pair of coils an outer coil 18031 and an inner coil 18032. The coils are arranged concentrically about the axis of rotation of the drum 1802, i.e. the coils 18031, 18032 are co-axial with the rotational axis of the drum 1802. The drum 1802 includes at least one conductive element 1805 coupled to current transfer mechanisms 1806 which pass current across the drum 1802. As current is passed across the conductive layer 1805 of the drum 1802 torque is generated on the drum 1802. The torque is transferred to the output shaft 1807 which passes through the drum and magnetic elements.Type: ApplicationFiled: November 15, 2013Publication date: October 16, 2014Applicant: HERON ENERGY PTE LTDInventors: Ante GUINA, John KELLS, Kurt LABES, Stuart GALT, Johannes S. DE BEER, David B. T. SERCOMBE, Rene FUGER
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Patent number: 8860270Abstract: A transverse flux machine includes: a winding wound in a rotational direction; a stationary component in which first ferromagnets and second ferromagnets surrounding a part of the winding are arranged in the rotational direction; a rotor capable of rotating around a rotational axis; and a rotary component opposing the stationary component and attached to the rotor, wherein the rotary component having: third ferromagnets opposing the first ferromagnets; fourth ferromagnets opposing the second ferromagnets; and first magnetic field generating sections and second magnetic field generating sections intervened between the third ferromagnets and the fourth ferromagnets, wherein the first magnetic field generating sections and the second magnetic field generating sections generate magnetic fields from an opposing surface of the rotary component toward an opposing surface of the stationary component, and directions of the magnetic fields are opposite of one another.Type: GrantFiled: September 14, 2011Date of Patent: October 14, 2014Assignee: Kabushiki Kaisha ToshibaInventor: Yasuhito Ueda
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Publication number: 20140265698Abstract: An electric generator with a transverse magnetic field has an enclosing unit, a rotor unit and a stator unit. The rotor unit is mounted in the enclosing unit and has multiple pairs of permanent magnets. The stator unit has multiple magnetizers. Each magnetizer is wound around by a winding, and has two magnetizing blocks oppositely mounted on two ends of the magnetizer to correspond to a corresponding pair of permanent magnets. When the rotor unit is rotated, a magnetic field passes through the magnetizing blocks and the winding on each magnetizer to generate power. The electric generator is a single-phase or multi-phase electric generator depending on whether a pair number of the permanent magnets is or is not equal to a number of the magnetizers. As having multiple magnetizers and multiple windings, the stator unit can increase a total magnetic flux passing therethrough for the electric generator to generate more power.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: National Yunlin University of Science and TechnologyInventor: Wan-Tsun Tseng
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Patent number: 8803393Abstract: Disclosed is a stator device adapted to be arranged in an electrical machine, where the electrical machine further includes a moving device, where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to direction of motion of the moving device, and where each phase comprises a first stator core section having a set of teeth, a second stator core section having a set of teeth, and a coil, and where the teeth are arranged to protrude towards the moving device; and wherein at least two neighboring phases share a stator core section, so that the first stator core section of a first phase and a second stator core section of a second phase is formed as a single unit.Type: GrantFiled: April 12, 2013Date of Patent: August 12, 2014Assignee: Hoganas AB (Publ)Inventors: Glynn James Atkinson, Alan G Jack, Barrie Mecrow
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Patent number: 8760023Abstract: Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve reduced overall cogging torque via implementation of a sixth-phase offset. Individual cogging torque waveforms in the electrical machine may be evenly distributed across one-sixth of a voltage phase or other suitable spacing, resulting in a reduced magnitude and/or increased sinusoidality of the overall cogging torque waveform for the electrical machine.Type: GrantFiled: July 17, 2012Date of Patent: June 24, 2014Assignee: Electric Torque Machines, Inc.Inventors: David G. Calley, Daniel S. Cole, John M. Dyer, Thomas F. Janecek
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Publication number: 20140139161Abstract: A transverse flux machine includes a stator having a circular coil wound in a rotational direction and a rotor arranged to face the first ferromagnet across a gap. The stator has a plurality of first ferromagnets surrounding a part of the circular coil in the rotational direction separately. The rotor is rotatable about a center axis of the circular coil relative to the stator. The rotor has a plurality of second ferromagnets arranged in the rotational direction separately. A first member and a second member are inserted between adjacent ones of the second ferromagnets. The first member and the second member generate two magnetic fields opposite to each other in the circumference direction.Type: ApplicationFiled: September 4, 2013Publication date: May 22, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Yasuhito UEDA
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Publication number: 20140132121Abstract: A transverse flux electric motor (10) includes an inner stator (15) and an outer rotor (12). The rotor (12) comprises a plurality of permanent magnets (70) in an alternating arrangement with a plurality of flux concentration strips (50). The flux concentration strips (50) contain grooves (60) on a surface (58) remote from the stator (15). The stator (15) may comprise a plurality of stator units (80), each comprising a stator yoke (82) positioned between a pair of stator cores (84). The stator cores (84) are substantially gear shaped and comprise a plurality of stator teeth (92). The stator teeth (92) of different stator cores (84) are circumferentially offset from each other. The stator yoke (82) may comprise a coiled metal strip wrapped around a central shaft (72) of the motor (10).Type: ApplicationFiled: November 14, 2013Publication date: May 15, 2014Applicant: Johnson Electric S.A.Inventors: Jinyun GAN, Chuiyou ZHOU, Wei ZHANG, Xiaomei YUAN
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Publication number: 20140125181Abstract: A magnetic field-modulated transverse flux multiphase permanent magnet motor consisting of a stator and a rotor. A number m of phase armature units are arranged in a row along the axial direction within a motor housing (1); each successive phase armature unit is offset in the circumferential direction by an electrical angle of 360°/m; the armature coil (2) is embedded within an annular cavity between the first to the third stator iron core tooth segments (3, 4, 5); the external circumferential surfaces of the first and the third rotor iron core tooth segments (6, 8) are respectively grooved in the axial direction with k/2 permanent magnet slots; the rotor permanent magnet slot on the first rotor iron core tooth segment (6) is axially offset from the rotor permanent magnet slot on the third rotor iron core tooth segment (8) by one-half the rotor tooth pitch; the direction of magnetization of the rotor permanent magnets (9) is identical.Type: ApplicationFiled: July 3, 2012Publication date: May 8, 2014Applicant: HARBIN INSTITUTE OF TECHNOLOGYInventors: Baoquan Kou, Dagang Xie, Jun Luo, Guolong Yang
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Publication number: 20140103767Abstract: A rotatable transverse flux electrical machine (TFEM) comprising a stator portion and a rotor portion operatively disposed inside the stator portion is described therein, the rotor portion comprising a plurality of magnets and concentrators alternatively affixed in a cylindrical arrangement to a non-magnetic magnets-and-concentrators supporting frame, the non-magnetic magnets-and-concentrators supporting frame being operatively secured to an axial shaft concentrically aligned with a rotational axis of the rotor portion.Type: ApplicationFiled: October 16, 2013Publication date: April 17, 2014Applicant: EOCYCLE TECHNOLOGIES INC.Inventors: Raphael NADEAU, Daniel MASSICOTTE, Eric ADAMS, Simon COTE, Patrice FORTIN, Jean-Francois BERNIER-SYNNOTT
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Publication number: 20140062242Abstract: A transverse flux motor (10) includes a housing (20), a stator (50), and a rotor (30) external to the stator (50) and installed onto the housing. The stator (50) includes a stator sub-assembly including at least one pair of stator core elements (52), each having multiple stator pole teeth (56) circumferentially offset from pole teeth of the other stator core element in the pair. The rotor (30) includes a rotor body (32) made of a single piece part or multiple rotor body laminas (36). The rotor body (32) includes multiple magnetic flux retention features (40) for positioning first magnets (34). Two adjacent magnetic flux retention features (48) define a second magnet retention feature (47) for positioning a second magnet (45) that form a substantially U-shape together with two neighboring first magnets with the same magnetic poles facing each other.Type: ApplicationFiled: September 6, 2013Publication date: March 6, 2014Applicant: Johnson Electric S.A.Inventors: Yue LI, Jinyun GAN, Chuiyou ZHOU, Yanfei LIAO, Xiaomei YUAN
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Patent number: 8648513Abstract: A permanent magnet type rotating electric machine includes: a rotor including a rotor core having a polygonal shape and a plurality of permanent magnets; and a stator including a stator core and armature windings, in which, when the number of poles is M, the number of slots is N, M permanent magnets are sequentially numbered from first to M-th in a circumferential direction, and a positional shift amount in the circumferential direction from a corresponding one of equiangularly arranged reference positions, each being at the same radial distance from a center of a rotating shaft, for an i-th (i=1, 2, . . . , M) permanent magnet is hi, M unit vectors in total, each being in an angular direction of 2?N(i?1)/M (rad), are defined, and a sum of M vectors obtained by multiplying the unit vectors respectively by the positional shift amount hi is smaller than a maximum value of an absolute value of the positional shift amount hi.Type: GrantFiled: September 26, 2008Date of Patent: February 11, 2014Assignee: Mitsubishi Electronics CorporationInventors: Masatsugu Nakano, Kazuhisa Takashima, Satoru Akutsu, Yoshihito Asao
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Publication number: 20140035417Abstract: The invention concerns a rotatable transverse flux electrical machine (TFEM) comprising a stator portion; and a rotor portion rotatably located in respect with the stator portion, the rotor portion including an alternate sequence of magnets and concentrators radially disposed about a rotation axis thereof; the stator portion including at least one phase, the at least one phase including a plurality of cores cooperating with a coil disposed about the rotation axis, each core including a skewed pair of poles to progressively electromagnetically engage an electromagnetic field of respective cooperating concentrators. The invention is also concerned with a plurality of elements located in desired positions in the TFEM and also with a linear TFEM.Type: ApplicationFiled: August 1, 2013Publication date: February 6, 2014Applicant: EOCYCLE TECHNOLOGIES INC.Inventors: Raphael NADEAU, Daniel MASSICOTTE, Eric ADAMS, Simon COTE, Patrice FORTIN, Jean-Francois BERNIER-SYNNOTT
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Patent number: 8624463Abstract: The invention relates to a transverse flux motor comprising at least one stator and at least one rotor. Magnetically active elements of the stator are formed in an annular manner and with a U-shaped inner contour on the stator and the rotor is in the form of a disk or a ring. The rotor comprises magnetically active sections consisting of a soft-magnetic or permanent-magnetic material, that are radially oriented in an annular manner towards at least one front surface of the rotor. The invention also relates to a drive method according to the transverse flux principle, whereby magnetically active sections of at least one disk-type or annular rotor, that are radially oriented in an annular manner towards at least one front surface of the rotor, interact with magnetically active elements having a U-shaped inner contour in an annular manner on at least one stator, in order to rotate the rotor.Type: GrantFiled: October 22, 2009Date of Patent: January 7, 2014Assignee: Leantec Motor GmbH & Co. KGInventor: Michael Schmidt
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Patent number: 8604658Abstract: A permanent magnet type rotating electric machine includes: a rotor including a rotor core having a polygonal shape and a plurality of permanent magnets; and a stator including a stator core and armature windings, in which, when the number of poles is M, the number of slots is N, M permanent magnets are sequentially numbered from first to M-th in a circumferential direction, and a positional shift amount in the circumferential direction from a corresponding one of equiangularly arranged reference positions, each being at the same radial distance from a center of a rotating shaft, for an i-th (i=1, 2, . . . , M) permanent magnet is hi, M unit vectors in total, each being in an angular direction of 2?N(i?1)/M (rad), are defined, and a sum of M vectors obtained by multiplying the unit vectors respectively by the positional shift amount hi is smaller than a maximum value of an absolute value of the positional shift amount hi.Type: GrantFiled: September 26, 2008Date of Patent: December 10, 2013Assignee: Mitsubishi Electronics CorporationInventors: Masatsugu Nakano, Kazuhisa Takashima, Satoru Akutsu, Yoshihito Asao
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Publication number: 20130270928Abstract: A stator core section for a stator of a modulated pole machine, the modulated pole machine including the stator, a moving device, and an active gap between respective interface surfaces of the moving device and the stator for communicating magnetic flux between the stator and the moving device, the moving device being adapted to move relative to the stator in a direction of motion, wherein the stator core section includes a stator core back from which a plurality of teeth extend, each tooth extending in a respective first direction defining a direction towards the rotor, the teeth being arranged along a second direction defining the direction of motion, each tooth having at least one side wall facing a neighbouring tooth and an interface surface facing the active gap, the interface surface and the side wall forming an edge connecting the interface surface and the side wall.Type: ApplicationFiled: December 20, 2011Publication date: October 17, 2013Applicant: HÕGANÃS AB (PUBL)Inventor: Göran Nord
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Publication number: 20130234554Abstract: An object of the invention is to provide a transverse flux machine apparatus (TFMA) with simple and economical core structure. The TFMA employs a core having laminated iron plates. The core has left diagonal portions and right diagonal portions for forming the 3D flux passages. A plurality of the 3D structures employs laminated iron cores with diagonal portions. By means of employing the diagonal portions, the core looks like a centipede. The centipede-like TFM called CTFM can have a plurality of types. A plurality of motor structure and a plurality of driving means are proposed for the CTFM.Type: ApplicationFiled: April 20, 2012Publication date: September 12, 2013Inventor: Shouichi TANAKA
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Publication number: 20130169096Abstract: Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve reduced overall cogging torque via implementation of a sixth-phase offset. Individual cogging torque waveforms in the electrical machine may be evenly distributed across one-sixth of a voltage phase or other suitable spacing, resulting in a reduced magnitude and/or increased sinusoidality of the overall cogging torque waveform for the electrical machine.Type: ApplicationFiled: July 17, 2012Publication date: July 4, 2013Applicant: ELECTRIC TORQUE MACHINES INC.Inventors: David G. Calley, Daniel S. Cole, John M. Dyer, Thomas F. Janecek
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Patent number: 8471423Abstract: A rotary machine including two coaxial parts, the first part including an intermediate part, an energizing coil, and fingers distributed around the circumference of the intermediate part with a constant finger pitch and directed alternately in opposite directions. The fingers are positioned so as to interlace over part of the coil. The second part includes a permanent magnet and two lateral parts mounted substantially coaxially, the lateral parts being secured to the permanent magnetic part so as to have opposite polarities, the lateral parts including protrusions distributed around the circumference of the lateral parts and arranged in alternation on one and the other of the lateral parts with a protrusion pitch substantially equal to the finger pitch. A control device can be equipped with such a rotary machine.Type: GrantFiled: April 9, 2009Date of Patent: June 25, 2013Assignee: Schneider Electric Industries SASInventors: Christophe Cartier Millon, Benoit Froidurot
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Patent number: 8441162Abstract: Disclosed is a stator device adapted to be arranged in an electrical machine, where the electrical machine further comprises a moving device, where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to direction of motion of the moving device, and where each phase comprises a first stator core section having a set of teeth, a second stator core section having a set of teeth, and a coil, and where the teeth are arranged to protrude towards the moving device; and wherein at least two neighboring phases share a stator core section, so that the first stator core section of a first phase and a second stator core section of a second phase is formed as a single unit.Type: GrantFiled: September 20, 2010Date of Patent: May 14, 2013Assignee: Hoganas AB (Publ)Inventors: Glynn James Atkinson, Alan G. Jack, Barrie Mecrow
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Publication number: 20130113320Abstract: An electrical machine stator assembly comprises: an electroconductive coil arranged circumferentially with respect to the rotational axis; a plurality of pairs of side lamination assemblies arranged circumferentially with respect to the rotational axis; a plurality of pairs of switch lamination assemblies arranged circumferentially with respect to the rotational axis and positioned adjacent ends of side lamination assemblies proximal the rotor; and at least one tooth associated with each switch lamination assembly and proximal the rotor. Each switch lamination assembly comprises a first group of laminated materials aligned generally circumferentially and generally in a first direction with respect to the rotational axis, the first direction being one selected from the group consisting of the axial and radial directions with respect to the rotational axis.Type: ApplicationFiled: November 7, 2012Publication date: May 9, 2013Applicant: Electric Torque Machines, Inc.Inventor: Electric Torque Machines, Inc.
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Patent number: 8415848Abstract: Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve increased efficiency, increased output torque, and/or reduced operating losses via use of extended magnets, overhung rotors, and/or stator tooth overlap. Extended magnets may reduce flux leakage between adjacent flux concentrators. Overhung rotors may reduce flux leakage, and may also facilitate voltage balancing in polyphase devices. Stator tooth overlap may reduce hysteresis losses, for example losses in flux concentrating portions of an electrical machine.Type: GrantFiled: October 12, 2011Date of Patent: April 9, 2013Assignee: Electric Torque Machines, Inc.Inventors: David G. Calley, Daniel S Cole, John M. Dyer, Thomas F. Janecek
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Patent number: 8395291Abstract: Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to be coupled to an electric bicycle or other light electric vehicle. Certain exemplary electrical machines may be configured with a high torque density and/or lower operating losses, providing improved operational characteristics to an e-bike. Moreover, certain exemplary electrical machines may replace a gear cassette on a bicycle, allowing conversion of the bicycle from manual to electric operation.Type: GrantFiled: May 3, 2010Date of Patent: March 12, 2013Assignee: Electric Torque Machines, Inc.Inventors: David G. Calley, Daniel S. Cole, John M. Dyer, Thomas F. Janecek, J. Scott Reynolds
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Patent number: 8390160Abstract: An electromechanical actuator for controlling the position of an aircraft component has a linear actuator to be driven to position a component. A transverse flux motor drives the linear actuator to move in a linear direction and control the position of the component.Type: GrantFiled: January 14, 2010Date of Patent: March 5, 2013Assignee: Hamilton Sundstrand CorporationInventors: Jacek F. Gieras, Gregory I. Rozman
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Patent number: 8381389Abstract: A method for assembling the rotor (R) connected with a shaft (4) and made by permanent magnets (2). The method includes providing an annular flange (9); forming a plurality of fixed linear guides on the annular flange (9); positioning another annular flange (90) on the guides; and locking the second flange (90) to the guides, so that the magnets (2) are clamped, inside the guides, by the first and the second flange (9, 90). The guides are formed by inserting a rod (13) through each of passing holes (91) in the first flange (9) and locking the rods (13) to the first flange (9); fitting, on the rods (13), a body (12) having a central portion with a passing hole (121) and side arms (122); fitting a spacer (11) on each rod (13); and fitting, on each rod, a body (12) having a passing hole (121) and two arms (122).Type: GrantFiled: August 25, 2009Date of Patent: February 26, 2013Inventors: Renzo Lisi, Leonardo Lenzi
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Patent number: 8354767Abstract: A permanent magnet machine is provided comprising a stator and a rotor, the rotor being adapted to rotate relative to the stator, the rotor comprising a plurality of permanent magnets separated in the circumferential direction from each other by axially extending rotor pole pieces for concentrating the magnetic flux from the permanent magnets, the stator having a structure that defines axial limits of an air gap between the stator and the rotor for communicating magnetic flux between the stator and the rotor, wherein that at least some of the permanent magnets extend axially outside the axial limits of the air gap as defined by the stator structure.Type: GrantFiled: March 18, 2009Date of Patent: January 15, 2013Assignee: Hoganas AB (Publ.)Inventors: Lars-Olov Pennander, Alan G. Jack, Glynn James Atkinson
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Patent number: 8299669Abstract: A rim driven thruster comprises an annular housing, a propulsor assembly, a magnetic rotor assembly and a transverse flux stator assembly. The annular housing defines a flow path extending along an axis. The propulsor assembly is supported within the housing and comprises propeller blades extending radially from the axis of the flow path. The propeller blades are configured to rotate about the axis. The magnetic rotor assembly is mounted to radially outer ends of the propeller blades. The transverse flux stator assembly is mounted to the annular housing and is configured to provide electromagnetic torque to the magnetic rotor assembly.Type: GrantFiled: October 18, 2010Date of Patent: October 30, 2012Assignee: Hamilton Sundstrand CorporationInventors: Jacek F. Gieras, Gregory I. Rozman
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Publication number: 20120249035Abstract: A transverse flux machine includes: a winding wound in a rotational direction; a stationary component in which first ferromagnets and second ferromagnets surrounding a part of the winding are arranged in the rotational direction; a rotor capable of rotating around a rotational axis; and a rotary component opposing the stationary component and attached to the rotor, wherein the rotary component having: third ferromagnets opposing the first ferromagnets; fourth ferromagnets opposing the second ferromagnets; and first magnetic field generating sections and second magnetic field generating sections intervened between the third ferromagnets and the fourth ferromagnets, wherein the first magnetic field generating sections and the second magnetic field generating sections generate magnetic fields from an opposing surface of the rotary component toward an opposing surface of the stationary component, and directions of the magnetic fields are opposite of one another.Type: ApplicationFiled: September 14, 2011Publication date: October 4, 2012Inventor: Yasuhito UEDA
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Publication number: 20120228965Abstract: The present invention provides a direct-drive electric machine such as a generator and a motor comprising a rotor or a mover and a stator. The direct-drive electric machine is configured with a plural-module combination structure in which the rotor or the mover and the stator are mutually combined such that a plurality of modules form one phase, respectively.Type: ApplicationFiled: September 15, 2010Publication date: September 13, 2012Inventors: Deok Je Bang, Bong Jun Kim, Jan Abraham Ferreira, Henk Polinder
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Publication number: 20120200177Abstract: Disclosed is a stator device adapted to be arranged in an electrical machine, where the electrical machine further comprises a moving device, where the stator device is a multi-phase stator device, where the phases are arranged side-by-side in a direction perpendicular to direction of motion of the moving device, and where each phase comprises a first stator core section having a set of teeth, a second stator core section having a set of teeth, and a coil, and where the teeth are arranged to protrude towards the moving device; and wherein at least two neighbouring phases share a stator core section, so that the first stator core section of a first phase and a second stator core section of a second phase is formed as a single unit.Type: ApplicationFiled: September 20, 2010Publication date: August 9, 2012Applicant: HÖGANÄS AB (Publ)Inventors: Glynn James Atkinson, Alan G. Jack, Barrie Mecrow