Patents by Inventor Hans Wennerstrom

Hans Wennerstrom 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).

  • Publication number: 20240128011
    Abstract: The invention comprises a method for assembling an inductor, including the steps of: providing a multiple sided inductor core comprising a central opening therethrough; inserting turn insert sections into the central opening; aligning the turn insert sections with a winding alignment guide, the winding alignment guide comprising a set of guide wings and a set of guide gaps between elements of the set of guide wings; placing turn wrapping sections within the guide gaps; and fastening the turn insert sections to the turn wrapping sections.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 18, 2024
    Inventors: Grant A. MacLennan, Hans Wennerstrom
  • Patent number: 11817254
    Abstract: The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: November 14, 2023
    Inventors: Hans Wennerstrom, Grant A. MacLennan
  • Publication number: 20230335330
    Abstract: The invention comprises an apparatus, comprising: an inductor, comprising: an inductor core and a winding comprising a wound shape around the inductor core, where the winding comprises a first cross-sectional area at a first longitudinal position along the winding and a second cross-sectional area at a second longitudinal position along the winding, the second cross-sectional area at least twenty percent larger than the first cross-sectional area. Optionally and preferably, the winding includes a first set of cast elements sharing a first geometric shape and a second set of cast elements sharing a second geometric shape, where the alternating members of the first set of cast elements and the second set of cast elements are welded together to form the winding.
    Type: Application
    Filed: June 18, 2022
    Publication date: October 19, 2023
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Publication number: 20230317357
    Abstract: The invention comprises a method and apparatus for processing power, comprising the steps of: generating/using 3-phase power; feeding an AC drive with the 3-phase power, the AC drive generating a first output; and transforming the first output with a zigzag transformer, the zigzag transformer linked to at least one load output/load connector. The method and apparatus comprises an optional filter for filtering the 3-phase power prior to the step of transforming, the filter including a distributed gap core material.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 5, 2023
    Inventors: Grant A. MacLennan, Hans Wennerstrom
  • Publication number: 20230018831
    Abstract: The invention comprises an apparatus, comprising an inductor, the inductor comprising: an inductor core; a first winding section comprising a first cast shape and a second winding section comprising the first cast shape, the first winding section mechanically joined to the second winding section to form a winding, the winding forming a wound shape about the inductor core. Optionally and preferably, a third winding section, comprising a second cast shape, mechanically joins the first winding section to the second winding section and a mechanical connector and/or an aluminum weld join the first winding section to the third winding section.
    Type: Application
    Filed: June 18, 2022
    Publication date: January 19, 2023
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Publication number: 20220415563
    Abstract: The invention comprises a method for manufacturing an inductor, comprising the steps of: casting a first cast winding section; casting a second cast winding section; and mechanically coupling the first cast winding section to the second cast winding section to form a section of a winding about a core of the inductor. Optionally, a first end of a connector section is welded to the first cast winding section and a second end of the connector section is welded to the second cast winding section, where the first and second cast winding sections have a common cast shape.
    Type: Application
    Filed: May 25, 2022
    Publication date: December 29, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer
  • Publication number: 20220406518
    Abstract: The invention comprises a method, including the steps of: providing an inductor core and longitudinally joining a first electrical turn section to a second electrical turn section to form at least part of an electrical turn of a winding about the inductor core and optionally including at least one of the steps of: (1) additive manufacturing, casting, stamping from metal stock, cutting material, and/or bending metal to form the first electrical turn section and/or (2) welding and/or mechanically joining the first electrical turn section to the second electrical turn section.
    Type: Application
    Filed: July 20, 2022
    Publication date: December 22, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Publication number: 20220399155
    Abstract: The invention comprises a method for forming an inductor, comprising the steps of: providing an inductor core and fastening at least ten sections of a winding together to form a winding, the winding comprising a formed wound shape about the inductor core. Optionally and preferably the step of fastening repeats steps of joining a member of a first set of winding parts to an element of a second set of winding parts, where the two sets of winding parts have different cast or formed shapes.
    Type: Application
    Filed: July 14, 2022
    Publication date: December 15, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Publication number: 20220384096
    Abstract: The invention comprises a method of: providing an inductor core, placing a winding guide within an inch of the inductor core, positioning a first turn element with the winding guide, positioning a second turn element with the winding guide, and mechanically coupling the first turn element to the second turn element to form at least a part of a winding, the winding forming a wrapped shape about the inductor core. Optionally and preferably, turn elements are subsequently joined, mechanically coupled, and/or welded together to form sections of the winding.
    Type: Application
    Filed: June 18, 2022
    Publication date: December 1, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Publication number: 20220367106
    Abstract: The invention comprises an apparatus, comprising: an inductor, the inductor comprising: an electrical turn about an inductor core, the inductor core comprising a ring shape; the electrical turn comprising a first width at a first radial distance from a center of the inductor core and a second width at a second radial distance from the center, the second width at least ten percent larger than the first width. Optionally and preferably, the electrical turn comprises: a first cast element and a second cast element and a mechanical connection connecting the first cast element to the second cast element, such as an aluminum weld.
    Type: Application
    Filed: June 6, 2022
    Publication date: November 17, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer, Matt Cotner, Saul Gonzalez
  • Patent number: 11501911
    Abstract: The invention comprises a method for manufacturing an inductor, comprising the steps of: casting a cast winding comprising an inner cavity; inserting a first inductor core subsection into the inner cavity; inserting a second inductor core subsection into the inner cavity; and mechanically coupling the first inductor core subsection to the second inductor core subsection to form an inductor core wound by the cast windings. The method of manufacturing optionally includes the steps of: forming at least a portion of the cast winding into an arced helical shape; forming the first inductor core subsection and the second inductor core subsection into elements of a torpid shaped inductor core; deforming the cast winding to physically allow the step of inserting the first inductor core subsection into the inner cavity; and/or deforming at least a portion of the cast winding into an arced helical coil shape after the step of inserting.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: November 15, 2022
    Inventors: Grant A. MacLennan, Hans Wennerstrom, Steve Schiffer
  • Publication number: 20220189686
    Abstract: The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.
    Type: Application
    Filed: January 30, 2022
    Publication date: June 16, 2022
    Applicant: CTM Magnetics ,Inc
    Inventors: Hans Wennerstrom, Grant A. MacLennan, Corey Jones
  • Patent number: 11361895
    Abstract: The invention comprises an inverter/converter yielding high frequency harmonics and/or non-sixty Hertz output coupled to a high frequency inductor-capacitor filter apparatus. For example, an inverter/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency modulated by a fundamental frequency and a set of harmonic frequencies, where the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. An inductor-capacitor filter, comprising an inductor having a distributed gap core material, receives power output from the inverter/converter and processes the power by passing the fundamental frequency while reducing amplitude of the harmonic frequencies.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: June 14, 2022
    Inventors: Hans Wennerstrom, Grant A. MacLennan, Edward Handy
  • Patent number: 11139103
    Abstract: The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: October 5, 2021
    Inventors: Hans Wennerstrom, Grant A. MacLennan, Corey Jones
  • Publication number: 20210257152
    Abstract: The invention comprises a multi-inductor mounting/cooling apparatus and method of use thereof comprising: an elongated tube having a first elongated section and a second elongated section separated by at least a first longitudinal split down a length of the elongated tube and at least three inductors affixed to a baseplate, the at least three inductors positioned within the elongated tube, the at least three inductors comprising a plurality of connectors extending radially outward through at least one aperture formed between the first elongated section and the second elongated section. Optionally and preferably a fan is positioned within and/or at an end of the elongated tube.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 19, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Steve Schiffer, Matt Cotner, Grant A. MacLennan, Hans Wennerstrom
  • Publication number: 20210257151
    Abstract: The invention comprises a harmonic filter apparatus and method of use thereof, the harmonic filter including a delta circuit comprising: (1) a first leg connecting a first apex to a second apex of the delta circuit; a second leg connecting the second apex to a third apex of the delta circuit; and a third leg connecting the third apex to the first apex and (2) a first capacitor and a second capacitor wired in parallel within the first leg of the delta circuit. Optionally and preferably, each apex of the delta circuit is connected to individual phases of three phase power via respective inductor—coupled inductor pairs, where the harmonic filter magnetically isolates individual phases of the three phase power.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 19, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Hans Wennerstrom, Grant A. MacLennan, Steve Schiffer
  • Publication number: 20210257150
    Abstract: The invention comprises a fabricated inductor winding apparatus and method of use/manufacture thereof, where the inductor has a core and a fabricated winding. The fabricated winding comprises a plurality of turns, a first turn of the plurality of turns comprising a first sub-section and a second sub-section, the first sub-section electrically connected to the second sub-section with a first non-wire electrical connection during an assembly step of the inductor and the second sub-section of the first turn electrically connected to a second turn with a second electrical connection formed during a winding step.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 19, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Grant A. MacLennan, Corey Jones, Hans Wennerstrom
  • Publication number: 20210241967
    Abstract: The invention comprises a method for fastening an inductor, comprising an aperture therethrough, to a mounting surface with a set of at least two mechanical straps and a strap force of ten to one hundred pounds of force per strap, the step of fastening further comprising the step of: passing at least a first portion of each of a first and second mechanical strap of the set of mechanical straps through the aperture and on opposing sides of the aperture, the first portion comprising a non-conductive material, where the inductor winding is fabricated during installation and/or the inductor is a component of a harmonic filter magnetically isolating and filtering individual phases of three phase power.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Corey Jones, Steve Schiffer, Grant A. MacLennan, Hans Wennerstrom
  • Publication number: 20210241965
    Abstract: The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Hans Wennerstrom, Grant A. MacLennan
  • Publication number: 20210241966
    Abstract: The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: CTM Magnetics, Inc.
    Inventors: Hans Wennerstrom, Grant A. MacLennan