Patents by Inventor William S. Heglund
William S. Heglund 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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Publication number: 20240063635Abstract: An example electrical power system includes a bus current controller configured to adjust a direct current (DC) provided on a DC bus, and a plurality of energy storage modules (ESMs). Each ESM includes at least one energy storage device, and includes a DC/DC converter configured to control charging of the at least one energy storage device from the DC bus and discharging of the at least one energy storage device onto the DC bus. A shared system controller is configured to control the bus current controller and the plurality of DC/DC converters. A method of controlling an electrical power system is also disclosed.Type: ApplicationFiled: November 2, 2023Publication date: February 22, 2024Inventors: Matthew L. Wilhide, William S. Heglund
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Patent number: 11905029Abstract: System and methods for passive power sharing of parallel sources are provided. Aspects include a first DC power supply including a first generator and a rectifier circuit, a second DC power supply including a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point, a first current sensing device coupled between the first output of the first DC power supply and the common bus point, a first generator controller configured to receive a first current signal from the first current sensing device, analyze the first current signal to determine a first voltage droop value based on the first current signal, and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value.Type: GrantFiled: May 24, 2021Date of Patent: February 20, 2024Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Michael C. Harke, John F. Defenbaugh, William S. Heglund
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Patent number: 11870249Abstract: An example electrical power system includes a bus current controller configured to adjust a direct current (DC) provided on a DC bus, and a plurality of energy storage modules (ESMs). Each ESM includes at least one energy storage device, and includes a DC/DC converter configured to control charging of the at least one energy storage device from the DC bus and discharging of the at least one energy storage device onto the DC bus. A shared system controller is configured to control the bus current controller and the plurality of DC/DC converters. A method of controlling an electrical power system is also disclosed.Type: GrantFiled: May 24, 2018Date of Patent: January 9, 2024Assignee: Hamilton Sundstrand CorporationInventors: Matthew L Wilhide, William S. Heglund
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Patent number: 11735911Abstract: Systems for power sharing coordination of parallel sources are provided. Aspects include a first DC power supply, a second DC power supply, a first generator controller configured to operate the first DC power source, a first current sensing device coupled between the first DC power supply and the common bus point, a second current sensing device coupled between the common bus point and a load, wherein the first generator controller is configured to receive a first current signal from the first current sensing device, receive a second current signal from the second current sensing device, determine a load share percentage for the first DC power supply, determine a first voltage adjustment based on the first current signal, the second current signal, and the load share percentage, and operate the first DC power supply to adjust a first voltage output by the first voltage adjustment.Type: GrantFiled: January 6, 2022Date of Patent: August 22, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Michael C. Harke, William S. Heglund
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Publication number: 20230065688Abstract: A generator system can include a first generator, a first controller operatively connected to the first generator to control a first generator voltage output, a second generator, and a second controller operatively connected to the second generator to control a second generator voltage output. The first generator and the second generator can be configured in a parallel generator configuration to share load power. The first controller and the second controller can be configured to provide foldback control. The first controller and the second controller can be configured to calibrate foldback to correct for current sharing imbalance between the first generator and the second generator.Type: ApplicationFiled: August 26, 2021Publication date: March 2, 2023Applicant: Hamilton Sundstrand CorporationInventors: Thomas P. Joyce, Michael C. Harke, William S. Heglund, Lon R. Hoegberg
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Publication number: 20230011032Abstract: Provided are embodiments for a power generation system. The system includes a generator comprising a first set of stator windings and a second set of stator windings; a first rectifier coupled to an output of the first set of stator windings; a second rectifier coupled to an output of the second set of stator windings; and an electrical connection coupling an output of the first rectifier and an output of the second rectifier, wherein the electrical connection is used to provide a DC supply to a load. Also provided are embodiments for a method for operating the power generation system.Type: ApplicationFiled: July 9, 2021Publication date: January 12, 2023Inventors: Frank Z. Feng, Andreas C. Koenig, William S. Heglund
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Publication number: 20220376498Abstract: Systems for power sharing coordination of parallel sources are provided. Aspects include a first DC power supply, a second DC power supply, a first generator controller configured to operate the first DC power source, a first current sensing device coupled between the first DC power supply and the common bus point, a second current sensing device coupled between the common bus point and a load, wherein the first generator controller is configured to receive a first current signal from the first current sensing device, receive a second current signal from the second current sensing device, determine a load share percentage for the first DC power supply, determine a first voltage adjustment based on the first current signal, the second current signal, and the load share percentage, and operate the first DC power supply to adjust a first voltage output by the first voltage adjustment.Type: ApplicationFiled: January 6, 2022Publication date: November 24, 2022Inventors: Michael C. Harke, William S. Heglund
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Publication number: 20220371744Abstract: System and methods for passive power sharing of parallel sources are provided. Aspects include a first DC power supply including a first generator and a rectifier circuit, a second DC power supply including a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point, a first current sensing device coupled between the first output of the first DC power supply and the common bus point, a first generator controller configured to receive a first current signal from the first current sensing device, analyze the first current signal to determine a first voltage droop value based on the first current signal, and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value.Type: ApplicationFiled: May 24, 2021Publication date: November 24, 2022Inventors: Michael C. Harke, John F. Defenbaugh, William S. Heglund
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Publication number: 20220200477Abstract: A power supply system to provide power to a load connected between first and second connectors. The system includes a generator that produces an alternating current generator output and a rectifier that receives the alternating current generator output and converts it into a direct current output and provides the direct current (DC) output between the first and second connectors. The system also includes a filter connected to the rectifier and between the connectors and that smooths the DC output. The filter includes a midpoint configured to be connected to ground. The system also includes a fault clearing source connected to the first connector that provides a clearing voltage to the first connector when a ground fault occurs on the first connector.Type: ApplicationFiled: December 23, 2020Publication date: June 23, 2022Inventor: William S. Heglund
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Patent number: 11355929Abstract: Systems for power sharing coordination of parallel sources are provided. Aspects include a first DC power supply, a second DC power supply, a first generator controller configured to operate the first DC power source, a first current sensing device coupled between the first DC power supply and the common bus point, a second current sensing device coupled between the common bus point and a load, wherein the first generator controller is configured to receive a first current signal from the first current sensing device, receive a second current signal from the second current sensing device, determine a load share percentage for the first DC power supply, determine a first voltage adjustment based on the first current signal, the second current signal, and the load share percentage, and operate the first DC power supply to adjust a first voltage output by the first voltage adjustment.Type: GrantFiled: May 24, 2021Date of Patent: June 7, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Michael C. Harke, William S. Heglund
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Patent number: 10931129Abstract: Embodiments include systems, methods, and devices for voltage regulation of a hybrid energy storage module (HESM). The embodiments include a system controller including a first voltage regulator and a second voltage regulator, a first HESM coupled to the system controller, where the first HESM is coupled to a first bus, and a second HESM coupled to the system controller, where the second HESM is coupled to a second bus, and the first bus and the second bus are different.Type: GrantFiled: April 19, 2018Date of Patent: February 23, 2021Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Matthew L. Wilhide, William S. Heglund
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Patent number: 10630420Abstract: An electrical power system for an aircraft may comprise a hybrid energy storage system, a first high voltage bus coupled to an input of said hybrid energy storage system, a second high voltage bus coupled to an output of said hybrid energy storage system, and a directed energy system coupled to the second high voltage bus. The hybrid energy storage system receives DC power via the input from said first high voltage bus, converts the DC power to a converted DC power, and dynamically stores the converted DC power and/or provides said converted DC power via said output to said directed energy system via the second high voltage bus.Type: GrantFiled: June 30, 2017Date of Patent: April 21, 2020Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: William S. Heglund, Matthew L. Wilhide
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Publication number: 20190359064Abstract: An example electrical power system includes a bus current controller configured to adjust a direct current (DC) provided on a DC bus, and a plurality of energy storage modules (ESMs). Each ESM includes at least one energy storage device, and includes a DC/DC converter configured to control charging of the at least one energy storage device from the DC bus and discharging of the at least one energy storage device onto the DC bus. A shared system controller is configured to control the bus current controller and the plurality of DC/DC converters. A method of controlling an electrical power system is also disclosed.Type: ApplicationFiled: May 24, 2018Publication date: November 28, 2019Inventors: Matthew L. Wilhide, William S. Heglund
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Publication number: 20190326763Abstract: Embodiments include systems, methods, and devices for voltage regulation of a hybrid energy storage module (HESM). The embodiments include a system controller including a first voltage regulator and a second voltage regulator, a first HESM coupled to the system controller, where the first HESM is coupled to a first bus, and a second HESM coupled to the system controller, where the second HESM is coupled to a second bus, and the first bus and the second bus are different.Type: ApplicationFiled: April 19, 2018Publication date: October 24, 2019Inventors: Matthew L. Wilhide, William S. Heglund
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Publication number: 20190006867Abstract: An electrical power system for an aircraft may comprise a hybrid energy storage system, a first high voltage bus coupled to an input of said hybrid energy storage system, a second high voltage bus coupled to an output of said hybrid energy storage system, and a directed energy system coupled to the second high voltage bus. The hybrid energy storage system receives DC power via the input from said first high voltage bus, converts the DC power to a converted DC power, and dynamically stores the converted DC power and/or provides said converted DC power via said output to said directed energy system via the second high voltage bus.Type: ApplicationFiled: June 30, 2017Publication date: January 3, 2019Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: William S. Heglund, Matthew L. Wilhide
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Patent number: 9121476Abstract: A transmission for providing mechanical power from an input includes a transmission assembly having an arm configured and adapted to be connected to a mechanical input for rotation at an input speed. A first planet is rotatably mounted to a first end of the arm. A trim ring operatively contacts the first planet for mutual rotation therewith. A brake is operatively connected to the trim ring for controlling rotation of the trim ring. A second planet is rotatably mounted to a second end of the arm. The second planet operatively contacts the first planet for mutual rotation therewith. An output ring operatively contacts the second planet for mutual rotation therewith to rotate at an output speed based on an input speed of the arm and a trim speed of the trim ring.Type: GrantFiled: April 12, 2013Date of Patent: September 1, 2015Assignee: Hamilton Sundstrand CorporationInventors: William S. Heglund, Glenn C. Lemmers, Jr.
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Publication number: 20140309077Abstract: A transmission for providing mechanical power from an input includes a transmission assembly having an arm configured and adapted to be connected to a mechanical input for rotation at an input speed. A first planet is rotatably mounted to a first end of the arm. A trim ring operatively contacts the first planet for mutual rotation therewith. A brake is operatively connected to the trim ring for controlling rotation of the trim ring. A second planet is rotatably mounted to a second end of the arm. The second planet operatively contacts the first planet for mutual rotation therewith. An output ring operatively contacts the second planet for mutual rotation therewith to rotate at an output speed based on an input speed of the arm and a trim speed of the trim ring.Type: ApplicationFiled: April 12, 2013Publication date: October 16, 2014Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: William S. Heglund, Glenn C. Lemmers, JR.
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Patent number: 6359412Abstract: A control for operating an inverter coupled to a switched reluctance machine is responsive to the magnitudes of current flowing in the phase windings of the machines and controls switches in legs of the inverter based upon such magnitude.Type: GrantFiled: April 9, 1996Date of Patent: March 19, 2002Assignee: Hamilton Sundstrand CorporationInventor: William S. Heglund
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Patent number: 6011377Abstract: An electric power starter/generator system for converting electrical energy from a remote dc electrical power source coupled to a dc distribution bus to mechanical energy to start a turbine engine in a start mode, and for converting mechanical energy from the turbine engine to electrical energy to power utilization equipment connected to the dc bus in a generate mode, comprises a switched reluctance machine, an inverter having a dc input/output coupled to the dc distribution bus, and at least a first and a second switch coupling each of the machine's phase windings to the dc bus, and at least a first and a second diode for cross-cupling each of said phase windings to the dc bus, and a controller coupled to the inverter for monitoring and controlling system performance during the start mode and the generate mode of system operation.Type: GrantFiled: March 1, 1994Date of Patent: January 4, 2000Assignee: Hamilton Sundstrand CorporationInventors: William S. Heglund, Stephen R. Jones
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Patent number: 5936386Abstract: A method of linearizing the output performance of a switched reluctance generator, comprises the steps of exciting the switched reluctance generator during a first phase of operation at a turn-on angle which need not be accurately calculated to produce the desired excitation current. Next, during a second phase of commutation, the switched reluctance generator is freewheeled when a phase current of the switched reluctance generator exceeds a first calculated current level. This freewheeling continues until the phase current of the switched reluctance generator exceeds a second calculated current level, at which point the switched reluctance generator enters the generation phase of its commutation cycle. The linearization of the performance occurs because the first and second calculated current levels are calculated as a function of energy converted per electrical cycle.Type: GrantFiled: September 10, 1997Date of Patent: August 10, 1999Assignee: Sundstrand CorporationInventor: William S. Heglund