Impregnated Or Coated Patents (Class 310/45)
  • Patent number: 10670335
    Abstract: A method for manufacturing an enameled wire includes providing a conductor with an enamel coating thereon, and exposing the conductor to a light with a wavelength absorbable by a solvent included in the enamel coating to evaporate the solvent. The light includes a peak wavelength of less than 4 ?m.
    Type: Grant
    Filed: April 25, 2015
    Date of Patent: June 2, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Yasuhiro Funayama, Ken Omori, Shunichiro Sato
  • Patent number: 10644569
    Abstract: Provided is a rotor including a rotor core, a plurality of teeth disposed at an outer side of the rotor core, and an insulator configured to surround the teeth wherein the teeth are detachably coupled to the rotor core, the insulator includes a body configured to surround the teeth, and a blade configured to protrude from at least one of an upper surface and a lower surface of the body, and thereby the number of manufacturing components is reduced and manufacturing costs and the number of manufacturing processes are reduced.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 5, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Jong Chan Lee
  • Patent number: 10605230
    Abstract: The present invention disclosure describes an integrated rotary wind turbine and electrical generating device that uses electrical current conductors such as a plurality of parallel plate capacitors or a plurality of wire equivalent sheets in combination with a plurality of magnets, stator, rotatable substructure, wind collectors, etc. to generate electricity. The turbine assembly simplifies the construction, reduces weight, reduces cost and improves heat dissipation of the assembly. It is also more environmentally friendly and amenable to use in isolated applications and as part of a highly distributed micro-grid.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: March 31, 2020
    Inventor: Stuart Lahtinen
  • Patent number: 10522265
    Abstract: The invention relates to a solid, in particular strip-shaped insulation material, to the use thereof in a vacuum impregnation method and a thus produced insulation system and to an electric machine using the insulation system, in particular for the medium and high voltage range, that is for medium and high voltage machines, in particular rotating electric machines in the medium and high voltage range and to semi-finished products for electric switching systems. According to the invention, the curing catalyst is a covalently-bridged di-imidazol derivative and/or a covalently-bridged di-pyrazol derivative.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 31, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jürgen Huber, Dieter Schirm, Matthias Übler
  • Patent number: 10389204
    Abstract: A plurality of reinforcing ribs, which extend from a cover-side bearing in an outer radial direction, is formed at a portion of a cover, at which a reaction force generated in response to operation of an electric actuator is applied. The reinforcing ribs can improve strength of the portion of the cover, at which the reaction force is applied. Therefore, it is possible to avoid a damage, such as deformation, a crack, at the resin cover caused by the reaction force applied to the cover.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: August 20, 2019
    Assignee: DENSO CORPORATION
    Inventors: Naoaki Kouno, Hiroki Shimada, Tetsuji Yamanaka, Etsugo Yanagida
  • Patent number: 10224780
    Abstract: A motor includes: a rotor; an enclosure member having a front housing, a rear housing, and a stator surrounding the rotor; an output shaft-side coolant supply port on an outer circumference of the enclosure member; output shaft-side coolant supply paths configured to supply coolant from the output shaft-side coolant supply port to an output shaft side; a counter-output shaft-side coolant supply port on the outer circumference of the enclosure member; counter-output shaft-side coolant supply paths configured to supply coolant from the counter-output shaft-side supply port to a counter-output shaft side; a temperature measurement unit configured to measure a temperature of the enclosure member; switching parts configured to switch between a plurality of coolants based on the temperature of the enclosure member; and coolant flow paths that connect the output shaft-side coolant supply port and the counter-output shaft-side coolant supply port to the switching parts.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: March 5, 2019
    Assignee: FANUC CORPORATION
    Inventor: Kyouhei Katsuki
  • Patent number: 10050509
    Abstract: Systems and methods of generating, storing and/or distributing electric power are disclosed. The system may include two or more direct current battery subsystems, a direct current motor/alternating current generator combination, an electric power distribution network, and battery recharging elements. One battery subsystem may power an alternating current generator while the other battery subsystem charges using a portion of the generated power. Excess power may service other electric loads. The roles of the battery subsystems may be switched periodically between charging and powering, repeatedly. A gear box may connect the electric motor and generator to adjust the relative rotational speeds of each for optimal performance of the system.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: August 14, 2018
    Assignee: ENERGY PRODUCING SYSTEMS OF AMERICA LLC
    Inventors: Robert J. Featherly, Rudolph M. Toncich
  • Patent number: 9917544
    Abstract: A method and power converter unit for operating a generator includes a rotatable shaft operably coupled with a source of rotational force, a rotor mounted to the rotatable shaft and having at least one rotor pole defining a rotatable direct axis, a stator encircling the rotor and having a set of stator windings, and a power output electrically coupled with the set of stator windings and operable in a power generating mode and a power absorption mode
    Type: Grant
    Filed: February 13, 2016
    Date of Patent: March 13, 2018
    Assignee: GE Aviation Systems, LLC
    Inventors: Ryan Lee Buffenbarger, Xiaochuan Jia, Slobodan Gataric
  • Patent number: 9768656
    Abstract: A three-phase alternating current electric motor wherein when a number of pole pairs of a rotor is P and a number of slots in which stator windings are inserted is N, N/(6P) becomes an irreducible fraction with a value of a denominator of 4 or more and wherein the relation of N>3P stands, in which the motor, for the layout of one layer of windings arranged in the slots, the UVW three-phases are arranged so as to have rotational symmetry of ±120 degrees in terms of mechanical angle from each other and, for the layout of the second layer, the windings are arranged reversed in direction by 180 degrees in electrical angle from the phases of the first layer of windings which have rotational symmetry and offset by M number of slots from the first layer, where T is a particular odd number for the relationship of 4/35?|T?2PM/N|? 8/35 is given.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 19, 2017
    Assignee: FANUC CORPORATION
    Inventor: Takashi Ito
  • Patent number: 9614404
    Abstract: A stator of a rotary electric machine includes a stator core and coils. The stator core is provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction. The coils are wound around through the slots. The coils include coil end portions which protrude outward in the axial direction from an end surface of the stator core. The stator includes a restricting member situated on an inner side of the coil end portions in the radial direction. The restricting member serves to prevent deformation of the coil end portions inward in the radial direction.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 4, 2017
    Assignee: Fanuc Corporation
    Inventors: Shinobu Takano, Yohei Arimatsu
  • Patent number: 9362801
    Abstract: A high-voltage flywheel energy storage system to prevent ionization, plasma formation, and electrical arc discharge and corresponding method are provided. The high-voltage flywheel energy storage system prevents ionization, plasma formation, and electrical arc discharge by isolating the motor windings and motor end windings from the partial vacuum environment existing in the flywheel housing.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: June 7, 2016
    Assignee: TEMPORAL POWER LTD.
    Inventors: Jeffrey A. Veltri, Cody J. MacNeil
  • Patent number: 9331540
    Abstract: An end winding corona protection including a winding of a rotating electric machine, having a conductor and a groundwall insulation surrounding the conductor, an end winding corona protection arranged on the outer surface of the groundwall insulation, the end winding corona protection comprising a first layer characterized in that the surface resistance of the first layer is in the range of 10 Ohm to 80 Ohm, and in that the end winding corona protection further comprises a second layer arranged on the outer surface of the first layer, wherein the second layer is made of semiconductive material, and wherein third layer is arranged on the outer surface of the second layer and made of medium resistive material.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: May 3, 2016
    Assignee: ALSTOM RENEWABLE TECHNOLOGIES
    Inventors: Andreas Koepfler, Jeremy Poux, Thomas Lugand
  • Patent number: 9312735
    Abstract: A stator includes a core fixed to a case of a rotary electric machine, and a plurality of winding wire coils that are wound on the core and that form a coil end protruded in the axial direction of the core. The two winding wire coils have a first and second conducting wires that are exposed in a distal end of each of the two coils. The stator includes: a joint in which the first and second wires are joined together at the coil end and in which proximal portions of the two coils approach each other with an acute angle therebetween so that the first and second wires lie on each other; and an insulating coat formed to enclose the joint with an insulating material that is coated entirely over peripheries of the two coils in their circumferential directions while filling a space across which the proximal portions form the acute angle. A rotary electric machine includes the stator, the case and a rotor.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 12, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Takasaki, Akihito Koike
  • Patent number: 9291155
    Abstract: In order to provide a vacuum pump motor which is free from rotation imbalance, there is provided a vacuum pump motor 10 which is connected directly to a pump main shaft 21 of a vacuum pump 20, including a motor rotor 120 which is attached directly or indirectly to the pump main shaft 21 and balance rings 127 which are attached directly or indirectly to the pump main shaft 21 at ends thereof which are spaced apart from end portions of a rotor core 123, wherein the balance rings 127 contain a material having anticorrosion properties.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: March 22, 2016
    Assignee: EBARA CORPORATION
    Inventors: Yoshinori Ojima, Takashi Hozumi, Naoya Yoshida, Takanori Inada, Toshiharu Nakazawa
  • Patent number: 9293972
    Abstract: Embodiments of an apparatus for forming insulation for an electrical component are provided herein. In one embodiment an apparatus for forming an insulation for an electrical component may include an actuator to pull an electrical component in a substantially linear direction, wherein the actuator is configured to move the electrical component in at least one direction relative to the substantially linear direction; a material source configured to provide a material to one or more surfaces of the electrical component as the electrical component is moved proximate the material source, wherein the material comprises at least a portion of an insulation; and a plurality of movable dies having inner surfaces disposed such that the material conforms to the one or more surfaces of the electrical component as the electrical component is moved through the plurality of movable dies.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: March 22, 2016
    Assignee: General Electric Company
    Inventors: Martin Kin-Fei Lee, Yang Cao
  • Patent number: 9154013
    Abstract: An electric motor has a stator, a shaft and a rotor. The stator has an annular yoke portion; a plurality of stator teeth inwardly extending from the yoke portion; stator windings wound on the stator teeth; and a molded member made of heat conductive plastic material. The molded member has a plurality of fins arranged on an outer wall of the yoke portion, a covering portion disposed in the spaces between adjacent stator teeth, and two connecting portions respectively located at axially outer end faces of the yoke portion and connected to the covering portion and the fins. The covering portion covers an inner wall of the yoke portion and the stator windings, and connects to the fins via the connecting portions. Heat generated by the stator windings is transmitted to the fins via the covering portion and the connecting portions, where it is dissipated.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: October 6, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: James Ching Sik Lau, Xiao Jun Yang, Cheong Wing Yuen, Yu Ying Li, Yang Qing Hou
  • Patent number: 9083207
    Abstract: A high-voltage flywheel energy storage system to prevent ionization, plasma formation, and electrical are discharge and corresponding method are provided. The high-voltage flywheel energy storage system prevents ionization, plasma formation, and electrical are discharge by isolating the motor windings and motor end windings from the partial vacuum environment existing in the flywheel housing.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: July 14, 2015
    Assignee: Temporal Power Ltd.
    Inventors: Jeffrey A. Veltri, Cody J. MacNeil
  • Patent number: 9035503
    Abstract: A stator arrangement particularly suitable for use in an air-cooled generator or other such electric machine includes a stator with an outer stator surface, an opening therein defining an inner stator surface, and longitudinally opposed stator end surfaces. Conductive coils are supported by the stator, and include end turns overlying the longitudinally opposed stator end surfaces. In order to block out environmental contaminants and prevent conductive coil shorting, protective barriers are mounted over the end turns and secured to the stator.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: May 19, 2015
    Assignee: KOLLMORGEN CORPORATION
    Inventors: Bradley A. Trago, Stephen Mark Fields
  • Publication number: 20150130300
    Abstract: The present invention provides a rotary motor including at least a field magnet having field winding, and an armature having armature winding with an electrically insulating coating material applied thereto, and the coating material includes at least two layers of; a lower-layer coating material including a first low-viscosity resin liquid; and an upper-layer coating material including a second low-viscosity resin liquid with at least hollow glass beads and a thermoplastic resin added thereto. Thus, a rotary motor can be achieved which achieves a balance between an efficiency improvement and reliability.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 14, 2015
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshikazu Yamagata
  • Patent number: 9000639
    Abstract: A mounting cap is provided for use with an insulated stator of an outer rotor motor. The mounting cap is configured to support the stator and is fixed to the stator to prevent relative rotation therebetween. The mounting cap includes mounting structure configured to fix the mounting cap to the machine, such that the stator is fixed to and supported on the machine by the mounting cap. Furthermore, the mounting cap is configured to facilitate routing of wiring associated with the stator.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: April 7, 2015
    Assignee: Nidec Motor Corporation
    Inventors: Daniel E. Bailey, L. Ranney Dohogne, Daniel E. Hilton, Philip S. Johnson
  • Publication number: 20150084449
    Abstract: Obtain a rotary electric machine by which a share of coil slots for a stator winding in slots, which are formed in a stator core, can be increased, and heat generation at a central portion of a stator can be decreased. The stator winding is composed of coil slots, which are inserted to the slots, and coil ends extended toward the outside in the axis direction of the stator core; and the coil conductors of the coil slots are configured in such a way that cross-sectional areas at central portions in the axis direction are wider cross-sectional areas at both end portions, and the cross-sectional areas of the coil conductors are reduced along the coil slots from the central portions to the both end portions.
    Type: Application
    Filed: March 4, 2014
    Publication date: March 26, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yutaka IKURA, Shinkichi Sawa, Tatsuro Hino, Tetsuya Yokogawa, Atsushi Sakaue
  • Publication number: 20150076935
    Abstract: A rotor for a rotating electrical machine may include a number of pole teeth which carry a field winding, slots formed between the pole teeth, slot wedges provided in the slots, and separators arranged in the slots, the separators extending, starting from the slot wedges, between the windings in a direction toward a slot base.
    Type: Application
    Filed: January 22, 2013
    Publication date: March 19, 2015
    Inventors: Michael Bulatow, Knut Welke
  • Patent number: 8963382
    Abstract: A stator includes a ring-shaped stator core having a plurality of slots arranged in a circumferential direction and a stator coil wound around the slots. The stator coil disposed within the slots is fixed by an impregnating material applied from an inner peripheral side of the stator core. An innermost-diameter coil wire of the stator coil positioned on the innermost-diameter side within the slots is provided with a first angle section that is angled towards an outward core-diameter direction side from a center section in a core-axis direction towards one end side, and a second angle section that is angled towards the outward core-diameter direction side from the center section in the core-axis direction towards another end side. The center section in the core-axis direction of the innermost-diameter coil wire projects towards an inward core-diameter direction side.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: February 24, 2015
    Assignee: Denso Corporation
    Inventors: Shigenori Yoneda, Toshiaki Oohara
  • Patent number: 8946962
    Abstract: An electric motor for high-temperature applications. The electric motor includes a rotor and a stator with a hollow-cylindrical, ironless stator winding of stoved-enamel wire. Furthermore, a soft-magnetic return is provided which encloses the stator winding. The stator winding is supported by a hollow-cylindrical supporting sleeve lying radially inside against the stator winding.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: February 3, 2015
    Assignee: Maxon Motor AG
    Inventors: Robin Phillips, Kornelia Kunstmann, Walter Kuhn
  • Patent number: 8946948
    Abstract: A motor includes a cover made of a resin material. The cover includes a first annular portion arranged to extend in an annular shape above coils, a side wall portion arranged to extend downward from an outer circumferential portion of the first annular portion, and a second annular portion arranged to extend radially outward or radially inward from a lower end portion of the side wall portion along an upper surface of a circuit board. The side wall portion is arranged to extend in an axial direction while filling in gaps between teeth on a radially inner side of radially outer end surfaces of the teeth. The coils are covered by the cover to be protected from dust, water droplets, etc. The radially outer end surfaces of the teeth are exposed from the cover, and are thus arranged to be in radial proximity to a rotor magnet.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: February 3, 2015
    Assignee: Nidec Corporation
    Inventors: Masaki Adachi, Yoshiaki Oguma, Yasuyuki Kaji
  • Publication number: 20150028701
    Abstract: A stator bar includes a substantially quadrangular conductive element made of a plurality of interwoven strands. The stator bar also includes an electric insulation applied around the conductive element and including a plurality of corners corresponding to corners of the conductive element. The electric insulation includes an inner insulation zone facing the conductive element, and an outer insulation zone surrounding the inner insulation zone. The radius of at least one of the corners is between 1.5-2.5 millimeters. Permittivity at the corners of the electric insulation decreases by 35-45% from the inner insulation zone facing the conductive element towards the outer insulation zone. The insulation includes at least one mica layer, where one of the at least one mica layer includes titanium dioxide (TiO2).
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Applicant: ALSTOM Technology Ltd
    Inventors: Thomas BAUMANN, Massimiliano Vezzoli, Dieter Stoll, Johann Haldemann
  • Patent number: 8910371
    Abstract: A rotor for an induction motor includes a rotor core having first and second ends and a plurality of conductor bars. Each conductor bar has a respective first end extending beyond the first end of said rotor core. Each first exposed end has a respective enclosed opening. The rotor also includes an end ring comprising a casting of material flowed between the respective first ends of the conductor bars and through the respective closed openings.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: December 16, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Richard M. Kleber, Thomas A. Perry, John S. Agapiou
  • Patent number: 8884488
    Abstract: A stator for an electric rotating machine includes a stator core which has a plurality of slots and a stator winding which is provided at the stator core. The stator winding has a plurality of conductor segments each of which includes an inner conducting body accommodated in the slot of the stator core and coil ends exposed from the slot, and weld portions which are connected with each other by welding the conductor segments at at least one of the coil ends. The weld portions are annularly disposed with an interval therebetween. The weld portions are coated with an insulating resin material. The resin material is formed of a plurality of layered insulating films.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: November 11, 2014
    Assignee: Denso Corporation
    Inventors: Shigenobu Nakamura, Akira Takasaki
  • Patent number: 8884476
    Abstract: A high-temperature insulation assembly for use in high-temperature electrical machines and a method for forming a high-temperature insulation assembly for insulating conducting material in a high-temperature electrical machine. The assembly includes a polymeric film and at least one ceramic coating disposed on the polymeric film. The polymeric film is disposed over conductive wiring or used as a conductor winding insulator for phase separation and slot liner.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 11, 2014
    Assignee: General Electric Company
    Inventors: Weijun Yin, Ri-an Zhao, Min Yan
  • Patent number: 8878406
    Abstract: A stator includes a stator core having a plurality of slot segments, a plurality of stator winding conductors arranged in select ones of the plurality of slot segments, a jumper conductor interconnecting select ones of the plurality of stator winding conductors to form one or more stator windings, a common conductor connected to at least one of the stator winding conductors, a phase conductor connected to corresponding ones of the one or more stator windings, and a composite sleeve provided on at least one of the jumper conductor, the common conductor, and the phase conductor. The composite sleeve includes a first sleeve, and a second sleeve positioned about the first sleeve. One of the first and second sleeves is formed from a compressed amide synthetic fiber. The first and second sleeves cooperate to provide protection for the conductor from external elements.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: November 4, 2014
    Assignee: Remy Technologies, L.L.C.
    Inventors: Colin Hamer, John Matthew Sigler, Max A. Butcher, Arlen Phillip Suter
  • Patent number: 8853908
    Abstract: A magnet rotor assembly comprises a magnet sleeve held on a rotor shaft by a rigid adhesive layer that includes at least one axial wedge shape corresponding to an axial irregularity on at least one of the surfaces bonded by the adhesive layer. Improved crush strength in the magnet sleeve and in other bonded metal parts, both initially and after exposure to high temperatures is accomplished by impregnating the parts with a curable resin.
    Type: Grant
    Filed: February 27, 2011
    Date of Patent: October 7, 2014
    Assignee: MBS Engineering, LLC
    Inventors: Stanley Byron Musselman, Edward E Welker, Mitchell L Spencer, Viswanathan Panchanathan
  • Publication number: 20140292115
    Abstract: A stator for an electric motor for use at very high temperatures of up to 550° C. is provided, comprising a stator winding with an axis and with several winding wire ends which are passed out at a front end of the stator winding. The stator further comprises a stator winding interconnection with several ring conductors which are arranged at the front end of the stator winding coaxially to same and are axially spaced apart from each other. The ring conductors serve the electrical contacting of the winding wire ends. It is provided that an electrically insulating distance ring is respectively provided between axially successive ring conductors, wherein the ring conductors and the distance rings are alternately stacked.
    Type: Application
    Filed: March 23, 2014
    Publication date: October 2, 2014
    Inventors: Yaaqub BRZUSKA, Kornelia STUBICAR, Pia ASCHWANDEN, Tobias HÄNNI, Bernd HAGE, Bernd FÜRDERER
  • Publication number: 20140225462
    Abstract: A rotor includes a first rotor core, a second rotor core, a permanent magnet and a resin layer. The first rotor core includes a first core base and first claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the first core base. The second rotor core includes a second core base and second claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the second core base. The first rotor core and the second rotor core are combined with each other so that the first and second core bases are opposed to each other and the first and second claw-shaped magnetic poles are alternately arranged in the circumferential direction of the rotor. The permanent magnet includes at least a main field magnet. The main field magnet is located between the first and second core bases in the axial direction, and is magnetized in the axial direction.
    Type: Application
    Filed: January 17, 2014
    Publication date: August 14, 2014
    Inventors: Yoji YAMADA, Chie MORITA, Seiya YOKOYAMA, Koji MIKAMI, Takahiro TSUCHIYA
  • Publication number: 20140217837
    Abstract: A stator for an electric motor or generator comprising a circumferential support having a plurality of protrusions circumferentially distributed about the support; and a plurality of teeth arranged to receive coil windings, wherein each tooth includes a recess with interlocking means formed within the recess for engaging with a protrusion mounted on the circumferential support in a radial direction.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 7, 2014
    Applicant: PROTEAN ELECTRIC
    Inventor: Esad Jaganjac
  • Publication number: 20140212296
    Abstract: A method of at least one of coating of and applying lacquer on magnetic rings of a rotor magnetic bearing mounted on the rotor, includes arranging of the magnetic rings (4) of the magnetic bearing on the rotor (1) at a location (3) provided for the magnetic rings (4), and coating of and/or applying lacquer on exposed surfaces (10) of the magnetic rings (4), respectively. The rotor includes magnetic rings arranged thereon or therein and coated or having lacquer applied thereon in accordance with the above-described method, and a vacuum pump includes such a rotor.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 31, 2014
    Applicant: Pfeiffer Vacuum GmbH
    Inventors: Marco Antonacci, Herbert Stammler
  • Publication number: 20140183985
    Abstract: A large peeling force due to heat occurs at the boundary between the insulation coating over the coil end and the coil conductor when the stator coil emits heat and reaches a high temperature due to the high output of the rotating electric machine that causes the insulation coating to peel from the conductor consequently causing insulation defects. A sloped surface is formed on the insulation coating so that the thickness of the tip of the insulation coating on the coil end has a shape having a slope that becomes gradually thinner towards the welded coupling section made by welding the conductor.
    Type: Application
    Filed: June 11, 2012
    Publication date: July 3, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshimi Kurahara, Koji Obata, Shuya Hagiwara
  • Publication number: 20140167532
    Abstract: A rotor of a motor capable of improving durability of the motor by increasing a bonding force between a ring magnet and a resin. The rotor includes a ring magnet having an insertion hole passing through the center thereof, a shaft inserted into the insertion hole, and a resin that is disposed between the insertion hole and the shaft and fixes the ring magnet and the shaft. The resin extends to upper and lower surfaces of the ring magnet so as to cover at least parts of the upper and lower surfaces of the ring magnet.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Inventors: Young Il PARK, Dong Ju SHIN
  • Patent number: 8754562
    Abstract: An electrical coil assembly for use in a flooded electrical machine operating in an electrically conductive and/or chemically aggressive medium, and a method for manufacturing an electrical coil assembly, are disclosed. The electrical coil assembly incorporates an electrical cable coil winding and a magnetic core. The electrical coil winding is wound of electrical cable with dielectric insulation that is also a waterproof molecular barrier and is covered with at least one layer of waterproof adhesive material. The magnetic core is substantially surrounded with a dielectric insulation layer, which is covered with at least one layer of waterproof adhesive material. The combination of dielectric insulation and waterproof adhesive layers provide protection against the ingress of water and accordingly reduce risk of electrical fault and failure of the electrical coil assembly in submerged service.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: June 17, 2014
    Assignee: Clean Current Power Systems Incorporated
    Inventors: Mihai C. Platon, Eyup Mete Sireli
  • Patent number: 8735724
    Abstract: An electric equipment of the present invention has an insulation structure at a welding part formed by joining end parts of a plurality of conductors with each other, the welding part having a rectangular cross section and being coated with an insulating coating, in which the insulating coating is voidless and has a coating thickness of 50 to 1000 ?m in the welding part, and in which an edge cover ratio of the insulating coating is 20% or more. According to the present invention, the insulation performance of the insulation structure in which the welding part formed by joining the end parts of the plurality of conductors with each other can be improved, the welding part having a rectangular cross section and being coated with an insulating coating, and a highly reliable electric equipment can be provided.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: May 27, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Takahito Muraki, Satoru Amou
  • Publication number: 20140112807
    Abstract: A motor protection structure includes a stator assembly, a casing and a filling material. The stator assembly is coated with a coating and fitted on one side of the casing. The casing has a receiving space for receiving a circuit board. The filling material is filled in the receiving space to enclose the circuit board. The filling material is connected to the coating to fully seal the stator assembly and the casing so as to lower manufacturing cost and shorten working time.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Wei-Cheng Chen, Ping-Chi Kuo, Chu-Hsien Chou, Shih-Chieh Lin
  • Patent number: 8702898
    Abstract: A method for connecting a first joining partner to a second joining partner. After provision of the first joining partner and the second joining partner, a lacquer layer is applied to the first joining partner. Then the first joining partner and the second joining partner are saturated together with an impregnating resin. The lacquer layer is produced from a lacquer composition based on an epoxy resin mixture, a curing accelerator, a silane-based, epoxy-functional bonding agent, and a solvent. The epoxy resin mixture has 10 wt.-% to 94 wt.-% of at least one solid epoxy resin with a maximum epoxy count of 2 Eq/kg, 1 wt.-% to 50 wt.-% of at least one solid, multifunctional epoxy resin with an epoxy count >4 Eq/kg, and 5 wt.-% to 40 wt.-% of a phenol and/or kresol novolak with a melting point >30° C. After impregnation, the viscosity of the impregnating resin is reduced such that the first joining partner and the second joining partner are connected to one another.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: April 22, 2014
    Assignee: Vacuumschmeize GmgH & Co. KG
    Inventor: Lothar Zapf
  • Publication number: 20140091647
    Abstract: A method for insulating a motor/generator coil includes providing a thermoplastic copolymer material in liquid form and applying a coating of the thermoplastic copolymer to the motor/generator coil in a thickness sufficient to withstand a predetermined minimum voltage threshold.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sanjay GUPTA, Ravi Kumar MUSINANA
  • Publication number: 20140084713
    Abstract: A rotating electric machine includes: a stator including a stator core, slots provided in the stator core at equal intervals along the circumferential direction, and coils placed in the stator slots and configured to generate a rotating magnetic field; and a rotor rotatably provided with a predetermined rotation gap between the stator core and the rotor, wherein the rotating electric machine further comprising a first varnish applied between the slots in the stator core and the coils for impregnation, and a second varnish applied directly onto enamel coating of the coils outside of the slots in the axial direction, the first varnish is a thermosetting varnish having a shear bond strength of a flat wire between the coils and the varnish is higher than that of the second varnish, and the second varnish is a thermosetting varnish having a glass transition temperature of approximately 104° C.
    Type: Application
    Filed: May 21, 2012
    Publication date: March 27, 2014
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshimi Kurahara, Koji Obata, Shuya Hagiwara
  • Publication number: 20140077499
    Abstract: The present invention provides an underwater electric rotating device and an underwater generator using the same. The device includes a rotating shaft, at least a portion of which is rotated in an underwater environment; a rotor which is rotated along with the rotating shaft; a stator which is provided around the rotor and rotates the rotor using electric energy or generates electric energy using rotation of the rotor; and a housing which has at least two waterproof spaces therein which are separated from each other by a partition wall formed perpendicular to the rotating shaft. In the at least two waterproof spaces, a waterproof space that is disposed at the outermost position based on a waterproof space having the rotor and the stator therein is filled with a material that is higher in specific gravity or viscosity than water at room temperature under atmospheric pressure.
    Type: Application
    Filed: July 3, 2013
    Publication date: March 20, 2014
    Inventor: Sung Jun Joo
  • Patent number: 8664817
    Abstract: Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 4, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Michael R. Rumbaugh, Jim F. Evenson, Jackson E. Reynolds, David G. Korte
  • Publication number: 20140054985
    Abstract: A module for a rotor of an electric machine, said rotor being excited by means of permanent magnets and rotating in a liquid medium, wherein the module contains a cylindrical, active part having a plurality of circular, magnetically soft laminations which form a laminated stack and have a central opening for receiving a rotor shaft; wherein at least two permanent magnets protected against the liquid medium are arranged in at least two corresponding cutouts in the laminated stack, the cutouts being formed under a cylindrical circumferential surface of the laminated stack.
    Type: Application
    Filed: February 24, 2011
    Publication date: February 27, 2014
    Applicant: ANDRITZ RITZ GMBH
    Inventor: Johann Neiszer
  • Publication number: 20140042836
    Abstract: The stator of a vehicle-use electric rotating machine includes a stator core having slots formed along a circumferential direction thereof, segment conductors having a rectangular cross section and wound on the stator core such that each of the slots accommodates at least two of the segment conductors to form a stator winding, a sheet-like electric insulating member disposed in each of the slots so as to surround the segment conductors accommodated in the slot, the electric insulating member being formed with a plurality of projections projecting toward a wall surface of the slot, and a resin filled in each of the slots so as to impregnate into the electric insulating member.
    Type: Application
    Filed: July 3, 2013
    Publication date: February 13, 2014
    Applicant: DENSO CORPORATION
    Inventors: Toshimitsu SHIGA, Hiroaki TAKEDA
  • Publication number: 20140035400
    Abstract: A rotating electric machine includes a hollow cylindrical stator core and a stator coil mounted on the stator core. The stator core has a plurality of slots that are arranged in a circumferential direction of the stator core. The stator coil is formed of a plurality of substantially U-shaped electric conductor segments to include at least one ?-Y connection. The ?-Y connection is comprised of a ?-connected first three-phase winding and a Y-connected second three-phase winding. The first three-phase winding includes three phase windings that are ?-connected to define three terminals of the first three-phase winding therebetween. The second three-phase winding includes three phase windings that are respectively connected to the three terminals of the first three-phase winding. Further, the number of turns of the first three-phase winding and the number of turns of the second three-phase winding are respectively set to two different odd numbers.
    Type: Application
    Filed: June 3, 2013
    Publication date: February 6, 2014
    Inventor: Nobuhiro ASANO
  • Publication number: 20130334907
    Abstract: The rotor for an electric rotating machine includes a rotor core fixed to a rotating shaft and formed with at least one magnet accommodating hole, a magnet accommodated in the magnet accommodating hole, a resin portion filled in the magnet accommodating hole accommodating the magnet, a first end plate fixed to the rotating shaft at one axial side of the rotor core, and a second end plate fixed to the rotating shaft at the other axial side of the rotor core. The axial fixing force of the second end plate against the rotating shaft is smaller than that of the first end plate. At least a part of the resin portion is present in an axial area between the magnet accommodated in the magnet accommodating hole and the first end plate, and the magnet is in direct contact with the second end plate.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 19, 2013
    Inventors: Hiroyuki IKUTA, Atsuo ISHIZUKA, Junichi NAKAZONO
  • Publication number: 20130313923
    Abstract: A method of manufacturing an electric machine that includes providing a core defining a slot, coating a magnet body prior to installation of the magnet body into the slot and installing the magnet body into the slot wherein the coating on the magnet body has a thermal conductivity of at least about 0.3 W·m?1·K?1, advantageously of at least about 0.5 W·m?1·K?1, and even more advantageously of at least about 2 or 3 W·m?1·K?1 and wherein the coating is in a partially cured condition when the magnet body is inserted into the slot. The coating may form a substantially voidless material bridge between the magnet body and the core over at least a portion of the magnet body and thereby thermally couple the magnet body with the core. An electric machine manufactured in accordance with the method is also disclosed.
    Type: Application
    Filed: February 8, 2013
    Publication date: November 28, 2013
    Applicant: Remy Technologies, LLC
    Inventors: Colin Hamer, Brad Chamberlin