Patents by Inventor Roy David Schultz
Roy David Schultz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9906108Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: GrantFiled: December 3, 2014Date of Patent: February 27, 2018Assignee: General Electric CompanyInventors: Kum Kang Huh, Patel Bhageerath Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Patent number: 9871418Abstract: A rotor component that comprises a rotor circuit configured for use with either an interior permanent magnet (IPM) machine or a synchronous reluctance machine (SRM) that includes a pole circuit made of a conductive, non-magnetic material and has a midpoint that substantially aligns with a d-axis of the IPM or SRM. An electric machine with a similar rotor component therein or having a loop or ring of a conductive, non-magnetic material that is substantially concentric about a d-axis of the electric machine.Type: GrantFiled: December 18, 2015Date of Patent: January 16, 2018Assignee: General Electric CompanyInventors: Kum Kang Huh, Patel Bhageerath Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Patent number: 9490682Abstract: A system (for controlling cooling of an alternator) comprises a control system, an alternator, and a blower fan, the alternator having a stator and a rotor. The control system is adapted to estimate one or more temperatures of the stator and/or rotor of the alternator using a thermal model. The control system is also adapted to control the blower fan to cool the alternator by providing a specified amount of air flow across the stator and rotor of the alternator, based on the estimated one or more temperatures of the stator and/or rotor.Type: GrantFiled: May 31, 2013Date of Patent: November 8, 2016Assignee: General Electric CompanyInventors: Maksim V. Borisenko, Edward Thomas Petrak, Roy David Schultz, Rajeev Verma, Sunil Srinivasa Murthy
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Publication number: 20160105064Abstract: A rotor component that comprises a rotor circuit configured for use with either an interior permanent magnet (IPM) machine or a synchronous reluctance machine (SRM) that includes a pole circuit made of a conductive, non-magnetic material and has a midpoint that substantially aligns with a d-axis of the IPM or SRM. An electric machine with a similar rotor component therein or having a loop or ring of a conductive, non-magnetic material that is substantially concentric about a d-axis of the electric machine.Type: ApplicationFiled: December 18, 2015Publication date: April 14, 2016Inventors: Kum Kang Huh, Patel Bhageerath Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Patent number: 9160213Abstract: Various methods and systems are provided for regulating traction motor temperature via control of a traction motor blower. In one embodiment, a method comprises adjusting a speed of a traction motor blower based on ambient temperature, traction motor loss, and one or more traction motor temperatures.Type: GrantFiled: September 6, 2012Date of Patent: October 13, 2015Assignee: General Electric CompanyInventors: Roy David Schultz, Jeffrey Daigle, Sudhir Gupta
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Patent number: 9093878Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: GrantFiled: November 1, 2012Date of Patent: July 28, 2015Assignee: General Electric CompanyInventors: Kum Kang Huh, Patel Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Publication number: 20150145255Abstract: A system (for controlling cooling of an alternator) comprises a control system, an alternator, and a blower fan, the alternator having a stator and a rotor. The control system is adapted to estimate one or more temperatures of the stator and/or rotor of the alternator using a thermal model. The control system is also adapted to control the blower fan to cool the alternator by providing a specified amount of air flow across the stator and rotor of the alternator, based on the estimated one or more temperatures of the stator and/or rotor.Type: ApplicationFiled: May 31, 2013Publication date: May 28, 2015Applicant: General Electric CompanyInventors: Maksim V. Borisenko, Edward Thomas Petrak, Roy David Schultz, Rajeev Verma, Sunil Srinivasa Murthy
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Publication number: 20150084471Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: ApplicationFiled: December 3, 2014Publication date: March 26, 2015Inventors: Kum Kang Huh, Patel Bhageerath Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Publication number: 20140116286Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: ApplicationFiled: November 1, 2012Publication date: May 1, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Kum Kang Huh, Patel Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
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Publication number: 20140062371Abstract: Various methods and systems are provided for regulating fraction motor temperature via control of a traction motor blower. In one embodiment, a method comprises adjusting a speed of a traction motor blower based on ambient temperature, traction motor loss, and one or more traction motor temperatures.Type: ApplicationFiled: September 6, 2012Publication date: March 6, 2014Inventors: Roy David Schultz, Jeffrey Daigle, Sudhir Gupta
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Publication number: 20090224624Abstract: A rotor structure for an interior permanent magnet (IPM) electromotive machine is provided. The rotor structure includes at least one rotor lamination including a first group of slots and a second group of slots arranged to form a magnetic pole. The first group of slots may be arranged to form a magnetic flux along a direct axis of the magnetic pole resulting from the first and second group of slots. At least some of the first group of slots is arranged to receive a respective permanent magnet. The second group of slots is arranged to provide a separation for the magnetic flux from adjacent magnetic poles and lying along a quadrature axis of said magnetic pole. At least some of the second group of slots is arranged without a permanent magnet. The rotor structure further includes a magneto-mechanical barrier arranged to reduce a peak level of mechanical stress occurring by the first and/or the second group of slots and/or impede a flow of magnetic flux through the barrier.Type: ApplicationFiled: March 3, 2009Publication date: September 10, 2009Inventors: AJITH KUTTANNAIR KUMAR, Ramasamy Anbarasu, Anshuman Tripathi, Arvind Kumar Tiwari, Roy David Schultz, Patrick Lee Jansen, Rammohan Rao Kalluri, Shishir Chandrasekhar Menon
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Publication number: 20090173841Abstract: A method is provided for distinguishing a valid locomotive control signal from an invalid control signal resulting from the presence of at least one interfering signal. The method includes detecting a signal, and transforming the signal into the frequency domain to create a transformed signal having a number of frequency domain peaks. The validity of the signal is determined based on at least of a number, a spacing, and a magnitude of the frequency domain peaks in the transformed signal.Type: ApplicationFiled: January 9, 2008Publication date: July 9, 2009Inventors: Ajith Kuttannair Kumar, Samuel Robert Mollet, Michael Scott Mitchell, Roy David Schultz, John Hayward Johnson
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Patent number: 6208057Abstract: An electrical machine includes one or more multiple-phase electrical power windings and an auxiliary winding. The auxiliary winding when closed generates electromagnetic fields which partially cancel fields generated during the operation of the electrical machine. The result is reduced audible noise from the electrical machine.Type: GrantFiled: December 28, 1998Date of Patent: March 27, 2001Assignee: Visteon Global Technologies, Inc.Inventors: Roy David Schultz, Shawn Swales
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Patent number: 5663605Abstract: In several embodiments of the present invention, an alternator is disclosed. The alternator includes a rotor having both wound-field and permanent magnet poles. The wound-field and permanent magnet poles are disposed about the circumference of the rotor.Type: GrantFiled: May 3, 1995Date of Patent: September 2, 1997Assignee: Ford Motor CompanyInventors: Paul Michael Evans, Roy David Schultz