Patents by Inventor Doyle F. Busse
Doyle F. Busse 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: 9625519Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.Type: GrantFiled: January 20, 2014Date of Patent: April 18, 2017Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse
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Patent number: 9553533Abstract: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.Type: GrantFiled: May 26, 2015Date of Patent: January 24, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Patent number: 9374021Abstract: Output voltage feedback systems and methods are provided for controlling voltage source inverter output voltages using low bandwidth buffer circuitry and low A/D converter sample rates to sense and sample PWM output voltage waveforms to provide an estimated volt-second value for phase voltage or line-line voltage as feedback for controlling the voltage source inverter.Type: GrantFiled: December 16, 2013Date of Patent: June 21, 2016Assignee: Rockwell Automation Technologies, Inc.Inventors: Rangarajan Tallam, Doyle F. Busse, Brian P. Brown, Russel J. Kerkman
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Publication number: 20160172992Abstract: Power converters are presented having a precharging resistance and a normally closed precharging switch with a controller to limit inrush current during precharging of a DC bus circuit capacitance while preventing operation of rectifier switching devices until the DC bus voltage reaches a threshold value, and then to open the precharging switch and allow selective operation of the rectifier switching devices, with a second capacitance coupled across a rectifier output to mitigate rectifier output voltage spikes due to common mode currents flowing through a DC link choke, and additional capacitors coupled between positive and negative rectifier output terminals and ground to limit the rectifier output terminal voltages with respect to ground.Type: ApplicationFiled: December 16, 2014Publication date: June 16, 2016Applicant: Rockwell Automation Technologies, Inc.Inventors: Rangarajan Tallam, Doyle F. Busse, Alia Rebecca Strandt
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Patent number: 9351420Abstract: A system for manufacturing an industrial automation drive includes a carrier frame configured to hold one or more semiconductor devices for use in the industrial automation drive. The carrier frame includes a set of fasteners disposed around an internal wall of the carrier frame such that each fastener of the set of fasteners includes an angled edge and a horizontal edge. Each fastener of the set of fasteners is configured to toollessly couple a power circuit board having the semiconductor devices to the carrier frame by bending from a first position when the power circuit board is pushed against the angled edge and returning to the first position when the power circuit board is pushed past the horizontal edge.Type: GrantFiled: October 30, 2012Date of Patent: May 24, 2016Assignee: Rockwell Automation Technologies, Inc.Inventors: Doyle F. Busse, Kevin G. Stachowiak, Kevin L. Baumann, Raymond G. Sladky, Gary R. Krenke, John C. Boetcher, Brian R. Krueger, Robert M. Michalski, Paul J. Grosskreuz, Joseph William Budill, Brian C. Frank, Martha A. Maxwell
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Publication number: 20150256112Abstract: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.Type: ApplicationFiled: May 26, 2015Publication date: September 10, 2015Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Publication number: 20150171772Abstract: Output voltage feedback systems and methods are provided for controlling voltage source inverter output voltages using low bandwidth buffer circuitry and low A/D converter sample rates to sense and sample PWM output voltage waveforms to provide an estimated volt-second value for phase voltage or line-line voltage is feedback for controlling the voltage source inverter.Type: ApplicationFiled: December 16, 2013Publication date: June 18, 2015Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: RANGARAJAN TALLAM, DOYLE F. BUSSE, BRIAN P. BROWN, RUSSEL J. KERKMAN
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Patent number: 9042146Abstract: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.Type: GrantFiled: July 13, 2012Date of Patent: May 26, 2015Assignee: Rockwell Automation Technologies, Inc.Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Patent number: 8953296Abstract: AC pre-charging techniques are provided for pre-charging the DC bus on a motor drive. AC pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, etc. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect a motor drive from the AC power supply under certain fault conditions.Type: GrantFiled: July 13, 2012Date of Patent: February 10, 2015Assignee: Rockwell Automation Technologies, Inc.Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Publication number: 20140132295Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.Type: ApplicationFiled: January 20, 2014Publication date: May 15, 2014Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse
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Patent number: 8643383Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.Type: GrantFiled: January 28, 2011Date of Patent: February 4, 2014Assignee: Rockwell Automation Technologies, Inc.Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse
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Publication number: 20130119903Abstract: AC pre-charging techniques are provided for pre-charging the DC bus on a motor drive. AC pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, etc. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect a motor drive from the AC power supply under certain fault conditions.Type: ApplicationFiled: July 13, 2012Publication date: May 16, 2013Applicant: Rockwell Automation Technologies, Inc.Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Publication number: 20130121051Abstract: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.Type: ApplicationFiled: July 13, 2012Publication date: May 16, 2013Applicant: Rockwell Automation Technologies, Inc.Inventors: Bruce W. Weiss, Doyle F. Busse, Jeremy J. Keegan, Lixiang Wei, Michael W. Loth, Rangarajan M. Tallam, Yogesh Patel
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Publication number: 20120194202Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.Type: ApplicationFiled: January 28, 2011Publication date: August 2, 2012Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse