Combined With Generating Coil Patents (Class 310/154.02)
  • Patent number: 10250100
    Abstract: Embodiments of the invention provide a starter that includes a motor with an armature that is coupled to a pinion. In some embodiments, the starter can include a main field coil that can be configured and arranged to produce a main magnetic field flux. Some embodiments include at least one auxiliary flux assembly arranged in close proximity with the main field coil and electrically disconnected from it. In some embodiments, a control system can operatively power the main field coil to produce a magnetic field flux. In some embodiments, the at least one auxiliary flux assembly can provide a supplementary field flux adding to the main magnetic field flux that interacts with the armature.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 2, 2019
    Assignees: REMY TECHNOLOGIES, L.L.C., REMY POWER PRODUCTS, L.L.C.
    Inventor: Michael D. Bradfield
  • Patent number: 9231460
    Abstract: A DC electric rotating machine, such as a starter of an automotive vehicle, includes a stator with salient poles having at least four poles distributed uniformly over the circumference of the stator, a rotor disposed inside the stator, a set of brushes adapted for the electric supply of the rotor, and at least two geometrically opposed salient poles. Each pole includes at least one substantially radial slot in a plane parallel to the axis of rotation of the rotor and preferably passes through the axis of the rotor. By minimizing the reaction fields of the armature, utilization of the magnetic material of the parts of the stator is balanced and a harmful armature reaction effect, which increases saturation of the polar parts of the inductor and which leads to reduction in the driving magnetic torque, is mitigated.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 5, 2016
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Nicolas Labbe, Benoit Dupeux, Jean-Paul Yonnet
  • Patent number: 9018815
    Abstract: The generator comprises a stator (10) having a plurality of protruding portions for stator pole (12) on the outer peripheral surface of the stator main unit (11), and a rotor (20) having a plurality of protruding portions for rotor (22) mounted around the stator (10) in a rotatable state. Since the height of the plurality of protruding portions for stator pole (12) decreases along the rotational or reverse rotational direction of the rotor (20), a torque waveform containing odd-order components is generated when the rotor (20) is rotated coaxially around the stator (10). The plurality of protruding portions for stator pole (12) comprises a first protrusion group for stator pole (12A) and a second protrusion group for stator pole (12B), and the first protrusion group for stator pole (12A) and the second protrusion group for stator pole (12B) are formed with the protruding portions for stator pole (12) laid out along the circumferential direction spaced apart from each other.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: April 28, 2015
    Assignee: Tohoku University
    Inventors: Kenji Nakamura, Osamu Ichinokura
  • Publication number: 20150054472
    Abstract: A self-excited alternator for generating electrical energy. The alternator includes a stator, a rotor, and an exciter. The rotor includes conductors which are integrated within the rotor via one of a casting process, a welding process, or a fastening process. The exciter includes a magnet producing a static magnetic field, and a rotatable conductive member coupled to the shaft and electrically coupled to the one or more conductors. The rotatable conductive member is operable to output the direct current to the one or more conductors upon rotation within the static magnetic field, thus exciting the alternator.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Kohler Co.
    Inventor: Adam Larson
  • Publication number: 20140346779
    Abstract: A windmill generator is provided configured to produce electric current to a receiving device when flux lines of a magnetic field are crossed by a coil. The windmill generator comprises a coil frame armature around which a coil is wrapped. Rare earth magnets are disposed in proximity to the coil. A set of wings may be coupled to the coil frame armature. When motion is induced to the coil from the pushing effect of moving air pushing the set of wings, an electric field and electric current due are produced due to flux lines of the magnetic field of the magnet being crossed by the moving coil. Alternatively, the set of wings may be coupled to the at least one magnet. When motion is induced to a magnet, an electric field/electric current is produced.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Applicant: NuSpecies Global Machines Corporation
    Inventors: Aston Gustavous Farquharson, Victor Roland Vargas Mousaa
  • Publication number: 20140265696
    Abstract: An electromagnetic generating transformer comprises one or more flux assembly having one or more magnetic field source having a positive pole and a negative pole and a magnetic field passing in a path between the positive pole and the negative pole and a conductor magnetically coupled with the one or more magnetic field source, the magnetic field source and the conductor being fixed relative to one another; a shunt is coupled with a motive source and configured to move the shunt into a primary position and a secondary position, wherein the magnitude of the magnetic field passing between the positive pole and the negative pole varies when the shunt is moved between the primary position and the secondary position.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Floor 36, Inc.
    Inventor: Carl E. Copeland, JR.
  • Publication number: 20140265693
    Abstract: An integrated starter-generator (ISG) system includes a flux-regulated permanent magnet machine (PMM), a wound-field synchronous machine, and a control coil controller. The flux-regulated PMM includes a stationary portion having a control coil and a plurality of permanent magnets, and a rotating portion that includes rotating armature windings. The wound-field synchronous machine includes a stationary portion that includes a main armature winding and a rotating portion that includes a main field winding that receives excitation from the flux-regulated PMM. The control coil controller controls current supplied to the control coil of the flux-regulated PMM to selectively control magnetic flux presented to the rotating armature windings.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Jacek F. Gieras, Gregory I. Rozman, Steven J. Moss
  • Publication number: 20140084727
    Abstract: An electrical generator apparatus, an electrical generator system and a method for generating electricity while using the electrical generator apparatus or the electrical generator system each include at least one hollow tubular arc component (i.e., generally a hollow tubular ring), at least one coil winding surrounding the at least a portion of the at least one hollow tubular arc component and at least one magnet movably located within a bore within the at least one hollow tubular arc component to pass through the at least one coil winding. By effecting a relative motion of the at least one magnet with respect to the at least one coil winding, an electrical output may be generated at the terminals of the at least one coil winding. The electrical generator apparatus, system and method may be particularly useful in generating electricity from water wave motion when the electrical generator apparatus is housed within a watertight enclosure that may serve as a buoy enclosure.
    Type: Application
    Filed: April 5, 2012
    Publication date: March 27, 2014
    Applicant: CORNELL UNIVERSITY
    Inventor: Angel F. Martinez
  • Publication number: 20130328431
    Abstract: A cylindrical-shape electromagnetic actuator comprising a plurality of pairs of magnets, the magnets of each pair being held at a distance from each other with an effective air gap formed therebetween for accommodating a coil structure; and a substantially cylindrical frame structure for supporting the pairs of magnets, the frame structure being configured such that substantially separate closed loop magnetic paths are provided for the respective pairs of magnets.
    Type: Application
    Filed: November 29, 2010
    Publication date: December 12, 2013
    Applicant: Agency for Science, Technology and Research
    Inventors: Tat Joo Teo, Guilin Yang
  • Publication number: 20130278103
    Abstract: A stator for an electrical motor or generator and method for manufacturing such stator includes providing a plurality of teeth and joining the teeth with a yoke. An electrically conductive winding is applied around each of the teeth. The teeth and/or yoke may be made from a stack of low-loss magnetic material sheets. The teeth and/or yoke may be made by folding a stack of magnetic material sheets.
    Type: Application
    Filed: December 13, 2011
    Publication date: October 24, 2013
    Inventors: Mark W. McPherson, Andrew D. Hirzel
  • Publication number: 20130229081
    Abstract: A power magnetic planetary gear set uses stator of a motor to provide electrically generated magnetic sections. The electrically generated magnetic sections are variable under the excitation control of coils and driver so that either the outer stator or the sun stator of the magnetic planetary gear set may be stationary and still provide self-revolutionary magnetic forces toward the planet gears disposed therebetween. The planet gears are also mounted on planet arms so as to revolve on their own axes and have orbital revolution with respect to the sun stator.
    Type: Application
    Filed: March 5, 2012
    Publication date: September 5, 2013
    Inventor: Cheng-Chi Huang
  • Publication number: 20130221680
    Abstract: A solution for harvesting energy from motion resulting from operation of an object, such as a vehicle, is provided. The motion can comprise low-frequency motion. The solution can include at least one magnet, at least one coil, a magnet supporting structure, a coil supporting structure, and a design component which provides a restoring force to at least one of: the magnet supporting structure or the coil supporting structure so as to ensure relative motion between the magnet(s) and coil(s). The relative motion of the magnet(s) and coil(s) generate energy which can be harvested for wireless monitoring or other purposes.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 29, 2013
    Applicant: INTERNATIONAL ELECTRONIC MACHINES CORPORATION
    Inventors: Zahid F. Mian, Ronald W. Gamache, Ryk E. Spoor
  • Patent number: 8508095
    Abstract: A flux-switching machine stator comprising two or more C-cores, each C-core having two legs and a back portion joining the legs, and a permanent magnet arranged between legs of adjacent C-cores. Each leg has a main portion and a tip portion further from the back portion characterized in that the tip portion of each leg is angled relative to the main portion of the respective leg.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: August 13, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Stephen Mark Husband, David James Powell, Zi-Qiang Zhu, Geraint Wyn Jewell, Arwyn Thomas
  • Patent number: 8459245
    Abstract: An electronically controlled, brushless DC, electromagnetic induction drive apparatus for use in a paintball marker active loader capable of directly driving the feeder element in the active loader while providing independently user selectable torque transfer capability and rotational speed whether used to continuously or intermittently rotate the loader feeder element. A plurality of selectively polarity reversible electromagnets are disposed in the loader housing and act to move a plurality of magnetic drive elements disposed on the rotating feed cone to rotate the feed cone a predetermined amount for each polarity cycle and cause paintballs to be fed into the paintball marker via a feed tube. A controller linked to the marker firing sequence manages the number and frequency of the sequential polarity changes of the electro-magnets to cause the feed cone to rotate in response to sensed movement of paintballs in the feed tube.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: June 11, 2013
    Inventors: Michael J. Fiorill, Donald Lee Kulp
  • Patent number: 8350502
    Abstract: An electromagnetic motor having a frame, and at least one disc rotatably mounted to the frame. At least one permanent magnet is mounted on the disc, and at least one electromagnet is mounted to the frame in magnetic proximity to the at least one permanent magnet. A battery is electrically coupled to the motor for powering the at least one electromagnet. A switch controls electrical power between the battery and the at least one electromagnet, and a sensing means is provided for controlling the switch to activate the at least one electromagnet with respect to the at least one permanent magnet to cause the at least one disc to rotate. Preferably, a generator is mechanically coupled to the motor and electrically coupled to the battery for generating electrical power to the battery, and a renewable energy source such as a photovoltaic cell is electrically coupled to the motor to supplement any net electrical loss.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: January 8, 2013
    Inventor: Clifford R. Rabal
  • Patent number: 8312871
    Abstract: An electronically controlled, brushless DC, electromagnetic induction drive apparatus for use in a paintball marker active loader capable of directly driving the feeder element in the active loader while providing user selectable torque transfer capability and rotational speed whether used to continuously or intermittently rotate the loader feeder element. A plurality of selectively polarity reversible electromagnets are disposed in the loader housing and act to move a plurality of magnetic drive elements disposed on the rotating feed cone to rotate the feed cone and cause paintballs to be fed into the paintball marker via a feed tube. A controller linked to the marker firing sequence manages the sequential polarity changes of the electro-magnets to cause the feed cone to rotate in response to movement of paintballs in the feed tube.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: November 20, 2012
    Inventors: Donald Lee Kulp, Robert E. Long, Jr., Michael J. Fiorill
  • Patent number: 8288907
    Abstract: An electric motor has a housing, a rotor rotatably installed in the housing, n permanent magnets with the same polarity fixed at an inner surface of the housing. The rotor is a wound armature having a plurality of teeth extending in a radial direction. The housing includes n inner projecting parts, the permanent magnets and the inner projecting parts being alternately arranged in a circumferential direction about the rotor. The magnets generate 2n magnetic circuits via the housing and the rotor, n being an integer greater than one. The size of at least a portion of a first air gap formed between the permanent magnets and the rotor is greater than the size of at least a portion of a second air gap formed between the inner projecting parts and the rotor.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: October 16, 2012
    Assignee: Johnson Electric S.A.
    Inventors: Rui Feng Qin, James Ching Sik Lau, Yong Bin Li, Cheng Shun Du, Yuan Jiang
  • Publication number: 20120217827
    Abstract: An electromechanical device includes at least one magnetic coil formed of an electric wire coated with a first insulating material wound a plurality of times to have a ring-like shape, and an insulating section made of a second insulating material and disposed so as to cover at least apart of the magnetic coil, and a withstand voltage between an outside of the insulating section and the magnetic coil across the insulating section is higher than a withstand voltage between the electric wires adjacent to each other in the magnetic coil.
    Type: Application
    Filed: February 27, 2012
    Publication date: August 30, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kesatoshi TAKEUCHI, Yojiro OKAKURA
  • Patent number: 8228020
    Abstract: An apparatus and method for controlling a hybrid motor, The hybrid motor, uses a permanent magnet instead of a field coil for a rotor, winds a coil round a stator in a multi-phase independent parallel manner, fixes a rectifying type encoder to the rotor and connects a sensor to a driving circuit. The apparatus comprises: an encoder attached to a rotor in cooperation with a pole sensor a speed input unit for generating a speed instruction signal a power switching circuit to generate motor driving signals; a drive module receiving the speed instruction signal and the sensor signal and outputting the speed instruction signal synchronized with the sensor signal as a driving motor signal; a power supply for applying a DC voltage to the power switching circuit; A logic power supply for converting the DC voltage into a logic voltage, and applying logic voltage to the drive module. The motor has n phases, n power switching circuits and n drive modules.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: July 24, 2012
    Assignee: Eni Co., Ltd.
    Inventors: Dong-Ryul Shin, Pyeong-Hun Cho
  • Patent number: 8159104
    Abstract: A motor-generator apparatus has a stator and a rotor in a cylindrical arrangement about a central longitudinal axis. The stator has a static circular magnetic surface spaced apart from, a static circular electromagnetic surface. The rotor has a cylindrical arrangement of radially oriented laminations positioned proximal to, and between the static circular magnetic, and the static circular electromagnetic surfaces. The rotor is supported for rotation relative to the stator. A circular arrangement of electromagnets are electrically interconnected for carrying an electrical current for energizing the circular electromagnetic surface which is discontinuous with a plurality of portions gapped apart.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 17, 2012
    Assignee: Clearwater Holdings, Ltd
    Inventor: Dumitru Bojiuc
  • Publication number: 20120025652
    Abstract: The generator comprises a stator (10) having a plurality of protruding portions for stator pole (12) on the outer peripheral surface of the stator main unit (11), and a rotor (20) having a plurality of protruding portions for rotor (22) mounted around the stator (10) in a rotatable state. Since the height of the plurality of protruding portions for stator pole (12) decreases along the rotational or reverse rotational direction of the rotor (20), a torque waveform containing odd-order components is generated when the rotor (20) is rotated coaxially around the stator (10). The plurality of protruding portions for stator pole (12) comprises a first protrusion group for stator pole (12A) and a second protrusion group for stator pole (12B), and the first protrusion group for stator pole (12A) and the second protrusion group for stator pole (12B) are formed with the protruding portions for stator pole (12) laid out along the circumferential direction spaced apart from each other.
    Type: Application
    Filed: November 30, 2009
    Publication date: February 2, 2012
    Applicant: TOHOKU UNIVERSITY
    Inventors: Kenji Nakamura, Osamu Ichinokura
  • Patent number: 8063517
    Abstract: The aim of the invention is to create a combined linear-rotary drive that has a compact, simple, and inexpensive design. Said aim is achieved by a combined drive comprising a linear driving device (3) and a rotary driving device (11), at least one of the two driving devices being provided with a hybrid reluctance motor. It is particularly advantageous to embody both driving devices as hybrid reluctance motors such that the rotor (4) can be produced at a low cost without permanent magnets in addition to ensuring that the drive has a very compact design.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 22, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: Erich Bott, Matthias Braun, Detlef Potoradi, Holger Schunk, Rolf Vollmer
  • Publication number: 20110181141
    Abstract: An electric motor, particularly for an actuating device for displacing a control device, such as a valve, a gate valve, a blow-out preventer or the like, for use in oil or gas production includes a stator and a rotor assigned to a motor shaft, and a position holding device for exerting a holding torque on the motor shaft. To improve an electric motor of this type such that said motor is of a compact structure, includes less additional parts for a corresponding position holding device and, particularly in case of failure of an external power supply, reliably prevents a situation where the motor shaft is moved out of the attained position upon corresponding pressure application e.g. by the control device, the position holding device comprises a plurality of permanent magnets, the permanent magnets being arranged in radial direction relative to the rotor and the motor shaft, respectively.
    Type: Application
    Filed: July 16, 2009
    Publication date: July 28, 2011
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Klaus Biester, Peter Kunow
  • Publication number: 20110121577
    Abstract: A method and device for using radial relative displacement between a magnet and coil to generate electricity from fluid motion. The device includes a support structural component, a moveable magnetic structure, a rotating structural component, and bearings. The moveable magnetic structure is coupled to the support structural component. The rotating structural component rotates relative to the support structural component. The bearings are coupled to or disposed with the rotating structural component. The rotation of the rotating structural component results in forces applied by the bearings on the moveable magnetic structure and movement of the moveable magnetic structure.
    Type: Application
    Filed: October 18, 2010
    Publication date: May 26, 2011
    Applicant: OSCILLA POWER INC.
    Inventor: Balakrishnan Nair
  • Publication number: 20100213778
    Abstract: An electromechanical device or magnetic motor includes a plurality of rotor magnet assemblies, a plurality of drive magnet assemblies that are laterally moveable with respect to the rotor magnet assemblies, a timing assembly for generating power pulses selectively supplied to the drive magnet assemblies, and electromagnetic coils associated with the drive magnet assemblies to receive the power pulses from the timing assembly to momentarily disrupt the magnetic field of such assemblies at selected times. The magnetic assemblies of the rotor mechanically rotate a shaft and interact with alternator windings to generate electrical power. The magnetic motor is self-contained with start/stop, rotational speed, diagnostics, global positioning, CPU and interface capability.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 26, 2010
    Inventor: Roger C. Knutson
  • Publication number: 20100133937
    Abstract: A method and device for using radial relative displacement between a magnet and coil to generate electricity from fluid motion. The device includes a support structural component, a movable magnetic structure, a rotating structural component, and bearings. The movable magnetic structure is coupled to the support structural component. The rotating structural component rotates relative to the support structural component. The bearings are coupled to or disposed with the rotating structural component. The rotation of the rotating structural component results in forces applied by the bearings on the movable magnetic structure and movement of the movable magnetic structure.
    Type: Application
    Filed: November 20, 2009
    Publication date: June 3, 2010
    Applicant: HiFunda, LLC
    Inventor: Balakrishnan Nair
  • Publication number: 20100066187
    Abstract: “IMPROVEMENT INTRODUCED IN ELECTRIC MOTOR”, foreseeing an electric motor indicated by reference (M) essentially comprising a stator (1), incorporating at least a coil (2) which is positioned or mounted in parallel with at least a respective fixed magnet (3), and when the current (C) is enabled, the flow (F) created by the coil (2) presents the same magnetic signal that the flow for the fixed magnet (3), closing the circuit though the air gap area (4), in the direction of rotor (5), to other air gap area (4) and to the core, the same occurring with the flow for the fixed magnet (3), passing from the core to the stator, to the air gap (4), to the rotor (5) and to other air gap area (4) and again to the core, then closing the circuit, creating two flows (F) that are combined to promote the rotation for the rotor (5); on the other hand, when the current is disabled, the flow for the fixed magnet enters in toroid setup, such as indicated by reference (F1) going through the core of the stator (1); foreseeing a fixe
    Type: Application
    Filed: September 16, 2008
    Publication date: March 18, 2010
    Inventor: Oscar Rolando Avila CUSICANQUI
  • Publication number: 20090121556
    Abstract: An electric machinery provided with a PM magnetic pole sandwiched by a permeable polar face and a magnetic circuit from an individual magnetic pole provides an innovative design of having disposed the PM magnetic pole sandwiched between the permeable polar face and the magnetic circuit from the individual magnetic pole to prevent PM magnetic pole from falling off and avoid PM magnetic pole magnetic force from being weakened by inverse excitation during the operation.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Inventor: Tai-Her Yang
  • Publication number: 20090121557
    Abstract: An electric machinery provided with a PM magnetic pole sandwiched by conduction winding excited magnetic poles is related to an innovative design of having a PM magnetic pole sandwiched by individual magnetic poles of conduction winding excited so to prevent the PM magnetic pole from falling off due to vibration and to prevent from weakening magnetic force by inverse excitement when the electric machinery is running.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Inventor: Tai-Her Yang
  • Patent number: 7476998
    Abstract: A magnetic drive apparatus including a rotor with a rotor magnetic flux generator, a stator with a stator magnetic flux generator and stator magnetic paths, and a magnetic flux controller provided in intermediate positions in said stator magnetic paths for controlling a magnetic flux flowing through the stator magnetic paths.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: January 13, 2009
    Assignee: Citizen Holdings Co., Ltd.
    Inventor: Toshinari Maeda
  • Patent number: 7453341
    Abstract: The present invention is a system and method for utilizing magnetic energy. The basic principles of the present invention may be implemented in a variety of systems and methods. A magnet may be rotated or an electromagnet may be controlled in order to control a magnetic field generated by a set of magnets. As a result, numerous, substantial benefits may be achieved by providing at least one set of multiple magnets. For example, the present invention may be used in systems and methods to perform a variety of functions including, but not limited to: (1) to control, manipulate, hold, and/or release a load; (2) to open and/or close a pathway; (3) to open and/or close a circuit; (4) to apply a magnetic field to a load and/or to remove a magnetic field from a load; (5) to intermittently apply and remove a magnetic field; (6) to increase the magnetic field that may be applied to a load; (7) to induce a load into motion; (8) to create energy; and (9) to improve the energy efficiency of a device or system.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: November 18, 2008
    Inventor: Jack W. Hildenbrand
  • Patent number: 7440689
    Abstract: An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first magnetic conductor and a second magnetic conductor. The first and the second magnetic conductors are respectively wound with a plurality of coils. The permanent magnet is adjoined to the body and has a first polarity and a second polarity opposing each other. The first magnetic conductor has at least a first extension member provided opposite to the first polarity. The second magnetic conductor has at least a second extension member provided opposite to the second polarity. The first extension member and the second extension member can better converge magnetic flux lines emanating from the coils when charged to the positions nearing the two polarities of the permanent magnet so high-efficiency focusing and zooming of lens can be achieved.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: October 21, 2008
    Assignee: Aiptek International Inc.
    Inventors: Kuo Tung Tiao, Shih Yuan Chang, Ming Jen Tsai
  • Patent number: 7348703
    Abstract: A pair of stators produce a magnetic field within a space between them a ferromagnetic toroidal rotor is rotationally mounted within the magnetic field. A plurality of windings are wound radially on the rotor and each winding provides a plurality of coils. Each of coils is interconnected through a switch, the switch configured for placing each of the coils within each winding alternatively in one of an electrical series connection, an electrical parallel connection, and an electrically isolated connection, so that when operated as a generator, a selected output voltage and current are produced by rotor rotation and when operated as a motor a selected output speed and torque are produced.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: March 25, 2008
    Inventor: Dumitru Bojiuc
  • Patent number: 6954019
    Abstract: Energy is generated by an apparatus and process which utilize magnetic forces to move a rotor in a circular direction to turn a rotor shaft. This apparatus and process convert magnetic energy into mechanical force or electrical energy.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: October 11, 2005
    Assignee: M International, LLC
    Inventor: Harry Paul Sprain
  • Patent number: 6927518
    Abstract: When one of armature coils is in a beginning of a commutation process, a center line of a trailing end tooth of a corresponding group of teeth, around which the one of the armature coils is wound, is generally aligned with a corresponding boundary between magnets. When the one of the armature coils is in an end of the commutation process, a center line of a leading end tooth of the corresponding group of the teeth is generally aligned with another boundary between the magnets.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: August 9, 2005
    Assignee: Asmo Co., Ltd.
    Inventors: Takeshi Tanaka, Hiroyuki Harada
  • Patent number: 6924579
    Abstract: A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator geometry minimizes flux leakage. The form of the flux conductor and flux switch terminations allows for a high number of poles and reduces magnetic reluctance.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: August 2, 2005
    Inventor: David Calley
  • Patent number: 6873235
    Abstract: One or more permanent magnets, or one or more permanent magnet arrays are used to produce shear force levitation. A primary application of shear force levitators is a levitated ring energy storage device. Such a levitated ring energy storage device includes a round support structure having a first magnetic levitator or levitator array encircling its outer periphery, and a ring encircling the support structure and having a second magnetic levitator or levitator array encircling its inner periphery, such that the first and second magnetic levitators (or levitator arrays) interact to produce a vertical force that levitates the ring.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: March 29, 2005
    Assignee: Magtube, Inc.
    Inventors: Orlo James Fiske, Chen Chen, Michael Richard Ricci, Bradley Evan Paden
  • Patent number: 6864608
    Abstract: Disclosed is a brushless generator with permanent magnets, which provides high-speed operation, simple maintenance, lightweight, and stable power. The brushless generator with permanent magnets including a main generator with a stator and a rotor; and an auxiliary generator having a stator made of a hollow stator core and a coil wound around the stator core, and a rotor made of a rotor core rotating within the stator core and a coil wound around the rotor core, where wedges and grooves are formed alternatively on the inner portion of the stator core of the auxiliary generator, and permanent magnets are embedded in the body of the grooves and the coil is wound around the body of the grooves. Accordingly, without the use of a brush, a rated load voltage is generated from the permanent magnets of the auxiliary generator, and voltage variations due to load variations are controlled by the windings of the auxiliary generator.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: March 8, 2005
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Do Hyun Kang, Yeon Ho Jeong
  • Publication number: 20040150288
    Abstract: A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator geometry minimizes flux leakage. The form of the flux conductor and flux switch terminations allows for a high number of poles and reduces magnetic reluctance.
    Type: Application
    Filed: November 25, 2003
    Publication date: August 5, 2004
    Inventor: David Calley
  • Patent number: 6707212
    Abstract: The present invention relates to an electrical machine which has one or several stators (2) edified by one or several statorpackages (21) that consists of one or several statorsections (22). The core (23) of the statorpackage is arranged to cooperate with a coil (24) which winding axis (2) of the machine to obtain axially directed magnetic flux. Further, the machine comprises one or several rotordiscs (11) that are arranged on the rotary axis (2).
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: March 16, 2004
    Inventor: Gustaf Bergmark
  • Patent number: 6703731
    Abstract: A permanent magnet direct current motor 10 has a permanent magnet stator with at least one permanent magnet 14. The magnet 14 faces poles of an armature core 26 across a small air gap. A speed sensor 12 is located in the air gap for detecting rotation of the armature core. The speed sensor 12 is a single turn coil fixed to a surface of the magnet 14 facing the armature core. Terminals 38 of the coil are located on an axial end surface of the magnet and mate with resiliently deformable fingers or spring biased terminals 36 fixed to the motor end cap 20.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: March 9, 2004
    Assignee: Johnson Electric S.A.
    Inventor: Ka-lun Lee
  • Patent number: 6664704
    Abstract: A motor/alternator is formed by a single toroidal magnet, which may be a hybrid magnet, having flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator minimizes the amount of material experiencing hysteresis by making the flux switches small and reduces eddy currents in the flux conductors by using a material very resistant to eddy currents. The subsequent reduction in core losses allows for very high electronic frequency operation and thus a high power density. The form of the flux conductors allows for a high number of poles in the motor/alternator thus enabling a high electronic frequency at modest rotational speed.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: December 16, 2003
    Inventor: David Gregory Calley
  • Patent number: 6563244
    Abstract: A composite-type electromagnet for a radial magnetic bearing has four composite-type electromagnet parts. Each part has four electromagnet cores formed of a magnetic material. The cores each have two protruding poles. A control coil is wound around each of the protruding poles and a biasing permanent magnet is disposed between each of the cores. The electromagnet cores and the biasing permanent magnets are in direct contact such that only a minute gap exists at a junction therebetween. A viscous material, adhesive material, or a magnetic fluid such as grease, having therein a material having high permeability and high saturation magnetic flux density is disposed in the minute gap so as to minimize magnetic flux leakage at the junction.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: May 13, 2003
    Assignee: Seiko Instruments Inc.
    Inventors: Akira Yamauchi, Okikazu Kuwahara
  • Patent number: 6563248
    Abstract: Electromagnets are placed to face each other in a yoke. Both ends of pole cores of the electromagnets are extended and bent. Permanent magnets are sandwiched between the extended parts of the pole cores. The north pole and south pole of the permanent magnet are in abutment with the north pole core and south pole core, respectively. When rotor windings and stator windings are not energized, a flux of the permanent magnets forms a closed magnetic circuit within the stator. When the rotor windings and the stator windings are energized, magnetic force lines of the electromagnets and permanent magnets flow through an armature core in the same direction via teeth and fluxes are increased.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: May 13, 2003
    Assignee: Asmo Co., Ltd.
    Inventor: Kazuhiro Fujita
  • Publication number: 20030038555
    Abstract: A slotless stator assembling two divided cores which jointly define a stator core into a cylindrical shape so as to contain therebetween a cylindrically shaped stator winding, wherein the stator winding has an outer diameter larger than an inner diameter of the stator core in the uncompressed condition of the winding. The stator winding is assembled inside the stator core in a radially inward compressed condition. Since the stator winding functions as a spring pressing the inside of the stator core so as to expand in the normal direction (the radial outward direction), the winding is mechanically secured by the resilient spring force to the inner periphery of the stator core. Hence there is no longer the need for a special fixation mechanism or adhesive when assembling the stator core winding and stator core together.
    Type: Application
    Filed: October 16, 2002
    Publication date: February 27, 2003
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masaru Ozawa, Takeo Fukuda
  • Publication number: 20020148099
    Abstract: The invention relates to a coil for an electric rotary machine, the coil comprising a substantially flat bundle of insulated wires wound around a winding axis so as to form a plurality of superposed turns, the cross-section of the bundle in the superposed turns having a long dimension that extends substantially perpendicularly to the winding axis of the coil.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 17, 2002
    Applicant: MOTEURS LEROY-SOMER
    Inventors: Andre Eydelie, Christophe Gilles, Laurent Jadeau, Philippe Augier, Jean-Marie Guillot
  • Publication number: 20020084714
    Abstract: Electromagnets are placed to face each other in a yoke. Both ends of pole cores of the electromagnets are extended and bent. Permanent magnets are sandwiched between the extended parts of the pole cores. The north pole and south pole of the permanent magnet are in abutment with the north pole core and south pole core, respectively. When rotor windings and stator windings are not energized, a flux of the permanent magnets forms a closed magnetic circuit within the stator. When the rotor windings and the stator windings are energized, magnetic force lines of the electromagnets and permanent magnets flow through an armature core in the same direction via teeth and fluxes are increased.
    Type: Application
    Filed: December 26, 2001
    Publication date: July 4, 2002
    Inventor: Kazuhiro Fujita
  • Patent number: 6376957
    Abstract: A generator or a 3-phase motor is arranged to provide multipolar permanent magnet excitation in combination with multipolar reluctance distribution wherein different numbers of poles are used for the permanent magnet excitation and for the reluctance distribution so that the principal working flux has a finite waveform. An annular rotor rotates about a cruciform stator. The magnets are buried in pole pieces of the stator so they converge radially inwardly with a triangular pole piece between them. Each pole piece is joined to the remainder of the stator by a bridge piece. The inner periphery of the rotor is formed as a circumferential array of teeth separated by recesses. The rotor may be within an annular stator or the machine may be linear.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: April 23, 2002
    Assignee: Newage International Ltd.
    Inventors: Lawrence Haydock, Edward Spooner
  • Patent number: 6373161
    Abstract: A rotating machine that can generate standard AC, high-frequency AC, or DC electricity by non-conventional means. The method involves changing the air gap between a pole of a stationary magnet and a ferromagnetic member on a rotating disk-like flywheel. Each time the distance of the air gap changes from a maximum to a minimum and back to a maximum, half a cycle of magnetic flux is produced in the circuit of the magnet. A conductor coil is wound around the magnet so that the half cycle of magnetic flux produces a half cycle of EMF in the conduction coil. The flywheel contains non-magnetic material as well as ferromagnetic material, which may be in the form of discrete bars or be shaped like a gear.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: April 16, 2002
    Inventor: Majid Z. Khalaf