Patents by Inventor Robert M. Cuzner
Robert M. Cuzner 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: 11394290Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: GrantFiled: April 8, 2021Date of Patent: July 19, 2022Assignee: DRS Naval Power Systems, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Publication number: 20210257900Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: ApplicationFiled: April 8, 2021Publication date: August 19, 2021Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Patent number: 11011973Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: GrantFiled: March 23, 2020Date of Patent: May 18, 2021Assignee: DRS Naval Power Systems, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Publication number: 20200227999Abstract: A methods and systems for generating rectified signals are disclosed. For example, a system performing the methods includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: ApplicationFiled: March 23, 2020Publication date: July 16, 2020Applicant: DRS Power & Control Technologies, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Patent number: 10630162Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: GrantFiled: July 6, 2018Date of Patent: April 21, 2020Assignee: DRS Power & Control Technologies, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Publication number: 20180316257Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: ApplicationFiled: July 6, 2018Publication date: November 1, 2018Applicant: DRS Power & Control Technologies, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Patent number: 10056820Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: GrantFiled: November 5, 2015Date of Patent: August 21, 2018Assignee: DRS POWER & CONTROL TECHNOLOGIES, INC.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Publication number: 20160126824Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: ApplicationFiled: November 5, 2015Publication date: May 5, 2016Applicant: DRS Power & Control Technologies, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Patent number: 9240732Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: GrantFiled: May 22, 2013Date of Patent: January 19, 2016Assignee: DRS Power & Control Technologies, Inc.Inventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Publication number: 20140334210Abstract: Systems and methods disclosed herein include a controller for a current source rectifier that is configured to facilitate operation in both continuous and discontinuous conduction modes. The controller comprises a discontinuous mode detection unit configured to determine when input current of the current source rectifier becomes discontinuous and a duty cycle calculation unit adapted to calculate duty cycles for the current source rectifier differently for operation in continuous or discontinuous mode. The controller is adapted to transition to a mode of operation to provide an input current that approximates a sinusoidal current during both the continuous and discontinuous modes of operation. The controller outputs control signals to turn on one or more of the electrical switches in the current source rectifier based on the calculated duty cycles.Type: ApplicationFiled: May 29, 2013Publication date: November 13, 2014Inventor: Robert M. Cuzner
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Patent number: 8873261Abstract: Systems and methods disclosed herein include a controller for a current source rectifier that is configured to facilitate operation in both continuous and discontinuous conduction modes. The controller comprises a discontinuous mode detection unit configured to determine when input current of the current source rectifier becomes discontinuous and a duty cycle calculation unit adapted to calculate duty cycles for the current source rectifier differently for operation in continuous or discontinuous mode. The controller is adapted to transition to a mode of operation to provide an input current that approximates a sinusoidal current during both the continuous and discontinuous modes of operation. The controller outputs control signals to turn on one or more of the electrical switches in the current source rectifier based on the calculated duty cycles.Type: GrantFiled: May 29, 2013Date of Patent: October 28, 2014Assignee: DRS Power & Control Technologies, Inc.Inventor: Robert M. Cuzner
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Publication number: 20130314953Abstract: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control signals. The system also includes a rectifier controller configured to receive a current sense signal indicative of the rectified output current and to generate the control signals based at least in part on the current sense signal, where the control signals cause the current source rectifier to attenuate at least one of a plurality of harmonic frequencies in the rectified output current.Type: ApplicationFiled: May 22, 2013Publication date: November 28, 2013Applicant: Engineered Electric Company d/b/a DRS FremontInventors: Robert M. Cuzner, Ashish R. Bendre, William R. Kranz
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Patent number: 7920393Abstract: A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance the upper and lower DC link voltages. The converter may be an inverter or a rectifier.Type: GrantFiled: June 2, 2008Date of Patent: April 5, 2011Assignee: DRS Power & Control Technologies, Inc.Inventors: Ashish R. Bendre, James C. Vander Meer, Robert M. Cuzner, Craig Goshaw
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Publication number: 20080298103Abstract: A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance the upper and lower DC link voltages. The converter may be an inverter or a rectifier.Type: ApplicationFiled: June 2, 2008Publication date: December 4, 2008Applicant: DRS POWER & CONTROL TECHNOLOGIES, INC.Inventors: Ashish R. Bendre, James C. Vander Meer, Robert M. Cuzner, Craig Goshaw