Patents by Inventor Alexander Gray
Alexander Gray 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: 20160232457Abstract: A system and method for providing various user interfaces is disclosed. In one embodiment, the various user interfaces include a series of user interfaces that guide a user through the machine learning process. In one embodiment, the various user interfaces are associated with a unified, project-based data scientist workspace to visually prepare, build, deploy, visualize and manage models, their results and datasets.Type: ApplicationFiled: February 11, 2016Publication date: August 11, 2016Inventors: Alexander Gray, Christopher Nelson, Vladimir Rodeski, Lawrence Kite, Nitesh Kumar, Maxsim Gibiansky, Sachinder Chawla, Philip Song, Abhimanyu Aditya
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Publication number: 20160164427Abstract: An apparatus and method for controlling the delivery of power from a DC source to an AC grid includes an inverter configured to deliver power from the unipolar input source to the AC grid and an inverter controller. The inverter includes an input converter, an active filter, and an output converter. The inverter controller includes an input converter controller, an active filter controller and an output converter controller. The input converter controller is configured to control a current delivered by the input converter to a galvanically isolated unipolar bus of the inverter. The output converter is configured to control the output converter to deliver power to the AC grid. Additionally, the active filter controller is configured to control the active filter to supply substantially all the power that is deliver by the output controller to the AC grid at a grid frequency.Type: ApplicationFiled: December 8, 2015Publication date: June 9, 2016Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray, Trishan Esram
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Publication number: 20160110657Abstract: A system and method for selecting a machine learning method and optimizing the parameters that control its behavior including receiving data; determining, using one or more processors, a first candidate machine learning method; tuning, using one or more processors, one or more parameters of the first candidate machine learning method; determining, using one or more processors, that the first candidate machine learning method and a first parameter configuration for the first candidate machine learning method are the best based on a measure of fitness subsequent to satisfaction of a stop condition; and outputting, using one or more processors, the first candidate machine learning method and the first parameter configuration for the first candidate machine learning method.Type: ApplicationFiled: October 14, 2015Publication date: April 21, 2016Inventors: Maxsim Gibiansky, Ryan Riegel, Yi Yang, Parikshit Ram, Alexander Gray
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Patent number: 9225256Abstract: An apparatus and method for controlling the delivery of power from a DC source to an AC grid includes an inverter configured to deliver power from the unipolar input source to the AC grid and an inverter controller. The inverter includes an input converter, an active filter, and an output converter. The inverter controller includes an input converter controller, an active filter controller and an output converter controller. The input converter controller is configured to control a current delivered by the input converter to a galvanically isolated unipolar bus of the inverter. The output converter is configured to control the output converter to deliver power to the AC grid. Additionally, the active filter controller is configured to control the active filter to supply substantially all the power that is deliver by the output controller to the AC grid at a grid frequency.Type: GrantFiled: July 8, 2013Date of Patent: December 29, 2015Assignee: SUNPOWER CORPORATIONInventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray, Trishan Esram
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Publication number: 20150333617Abstract: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, and an active filter, each of which is electrically coupled to a bus. The bus may be a DC bus or an AC bus. The input converter is configured to convert the input DC waveform to a DC or AC bus waveform. The output converter is configured to convert the bus waveform to the output AC waveform at a grid frequency. The active filter is configured to reduce a double-frequency ripple power of the bus waveform by supplying power to and absorbing power from the power bus.Type: ApplicationFiled: July 27, 2015Publication date: November 19, 2015Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray
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Publication number: 20150229221Abstract: Regulation of powertrain converter circuits is provided. The power conversion may include converting between direct current and alternating current and the regulation may include reduction of distortion on switching start up and zero-crossings. Solid-state implementations, code implementations, and mixed implementations are provided.Type: ApplicationFiled: April 20, 2015Publication date: August 13, 2015Applicant: SUNPOWER CORPORATIONInventors: Alexander Gray, Patrick L. Chapman
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Patent number: 9093919Abstract: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, and an active filter, each of which is electrically coupled to a bus. The bus may be a DC bus or an AC bus. The input converter is configured to convert the input DC waveform to a DC or AC bus waveform. The output converter is configured to convert the bus waveform to the output AC waveform at a grid frequency. The active filter is configured to reduce a double-frequency ripple power of the bus waveform by supplying power to and absorbing power from the power bus.Type: GrantFiled: October 2, 2012Date of Patent: July 28, 2015Assignee: SunPower CorporationInventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray
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Patent number: 9048740Abstract: Power conversion methods, systems, articles of manufacture, and devices are provided. The power conversion may include converting between direct current and alternating current wherein switching losses associated with latent electrical charges are reduced. Current sensing may be low-side bus reference. Solid-state implementations, code implementations, and mixed implementations are provided.Type: GrantFiled: July 23, 2013Date of Patent: June 2, 2015Assignee: SunPower CorporationInventors: Alexander Gray, Patrick L. Chapman
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Patent number: 8842454Abstract: An apparatus for delivering AC power to an AC load may include a plurality of inverters to receive direct current (DC) power from a respective DC power source and respectively provide AC power to an AC load. The apparatus may further include a first controller to generate a first control signal based on total AC current and total AC voltage being delivered to the AC load by the plurality of inverters. The apparatus may further include a plurality of secondary controllers to each receive the first control signal and each produce a respective secondary control signal based on the first control signal. The respective secondary control signal for each of the plurality of secondary controllers is configured to control a corresponding one of the plurality of inverters to provide a portion of the AC power.Type: GrantFiled: February 17, 2011Date of Patent: September 23, 2014Assignee: SolarBridge Technologies, Inc.Inventors: Brian Johnson, Philip Krein, Alexander Gray, Patrick L. Chapman
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Patent number: 8817510Abstract: An apparatus and method for controlling a DC-to-AC inverter is disclosed. The DC-to-AC inverter may be configured to convert DC power received from an alternative energy source to AC power for supplying an AC grid or load. The inverter may determine whether the power presently supplied by the alternative energy source is less than a predetermined amount of power and, if so, disable an output converter of the inverter. Additionally, the inverter may predict the voltage of a DC bus of the inverter at a future point in time and, if the predicted DC bus voltage is greater than a predetermined maximum DC bus voltage, enable the output converter to transfer energy from the DC bus to the AC grid to reduce the DC bus voltage.Type: GrantFiled: October 2, 2012Date of Patent: August 26, 2014Assignee: SolarBridge Technologies, Inc.Inventors: Trishan Esram, Alexander Gray, Eric Martina, Patrick Chapman
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Publication number: 20140003100Abstract: An apparatus and method for controlling the delivery of power from a DC source to an AC grid includes an inverter configured to deliver power from the unipolar input source to the AC grid and an inverter controller. The inverter includes an input converter, an active filter, and an output converter. The inverter controller includes an input converter controller, an active filter controller and an output converter controller. The input converter controller is configured to control a current delivered by the input converter to a galvanically isolated unipolar bus of the inverter. The output converter is configured to control the output converter to deliver power to the AC grid. Additionally, the active filter controller is configured to control the active filter to supply substantially all the power that is deliver by the output controller to the AC grid at a grid frequency.Type: ApplicationFiled: July 8, 2013Publication date: January 2, 2014Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray
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Publication number: 20130308345Abstract: Power conversion methods, systems, articles of manufacture, and devices are provided. The power conversion may include converting between direct current and alternating current wherein switching losses associated with latent electrical charges are reduced. Current sensing may be low-side bus reference. Solid-state implementations, code implementations, and mixed implementations are provided.Type: ApplicationFiled: July 23, 2013Publication date: November 21, 2013Applicant: SolarBridge Technologies, Inc.Inventors: Alexander Gray, Patrick L. Chapman
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Patent number: 8508964Abstract: Power conversion methods, systems, articles of manufacture, and devices are provided. The power conversion may include converting between direct current and alternating current wherein switching losses associated with latent electrical charges are reduced. Current sensing may be low-side bus reference. Solid-state implementations, code implementations, and mixed implementations are provided.Type: GrantFiled: December 3, 2010Date of Patent: August 13, 2013Assignee: SolarBridge Technologies, Inc.Inventors: Alexander Gray, Patrick L. Chapman
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Patent number: 8482947Abstract: An apparatus and method for controlling the delivery of power from a DC source to an AC grid includes an inverter configured to deliver power from the unipolar input source to the AC grid and an inverter controller. The inverter includes an input converter, an active filter, and an output converter. The inverter controller includes an input converter controller, an active filter controller and an output converter controller. The input converter controller is configured to control a current delivered by the input converter to a galvanically isolated unipolar bus of the inverter. The output converter is configured to control the output converter to deliver power to the AC grid. Additionally, the active filter controller is configured to control the active filter to supply substantially all the power that is deliver by the output controller to the AC grid at a grid frequency.Type: GrantFiled: September 21, 2009Date of Patent: July 9, 2013Assignee: SolarBridge Technologies, Inc.Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray, Trishan Esram
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Patent number: 8450985Abstract: An energy recovery circuit receives and stores energy associated with switching transitions in a power converter having a first switch and a second switch configured to be operated to selectively apply a voltage source to an output load. The energy recovery circuit includes an inductive element, a diode, and a capacitive element. The inductive element receives at least a portion of electrical current flowing through one of the first switch and the second switch. The at least a portion of the electrical current flows through the diode to charge the capacitive element with a voltage. The energy recovery circuit includes a recovery power converter to transfer the voltage from the capacitor.Type: GrantFiled: September 16, 2009Date of Patent: May 28, 2013Assignee: SolarBridge Technologies, Inc.Inventors: Alexander Gray, Patrick L. Chapman
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Publication number: 20130027998Abstract: An apparatus and method for controlling a DC-to-AC inverter is disclosed. The DC-to-AC inverter may be configured to convert DC power received from an alternative energy source to AC power for supplying an AC grid or load. The inverter may determine whether the power presently supplied by the alternative energy source is less than a predetermined amount of power and, if so, disable an output converter of the inverter. Additionally, the inverter may predict the voltage of a DC bus of the inverter at a future point in time and, if the predicted DC bus voltage is greater than a predetermined maximum DC bus voltage, enable the output converter to transfer energy from the DC bus to the AC grid to reduce the DC bus voltage.Type: ApplicationFiled: October 2, 2012Publication date: January 31, 2013Inventors: Trishan Esram, Alexander Gray, Eric Martina, Patrick Chapman
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Publication number: 20130027982Abstract: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, and an active filter, each of which is electrically coupled to a bus. The bus may be a DC bus or an AC bus. The input converter is configured to convert the input DC waveform to a DC or AC bus waveform. The output converter is configured to convert the bus waveform to the output AC waveform at a grid frequency. The active filter is configured to reduce a double-frequency ripple power of the bus waveform by supplying power to and absorbing power from the power bus.Type: ApplicationFiled: October 2, 2012Publication date: January 31, 2013Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray
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Patent number: 8279642Abstract: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, and an active filter, each of which is electrically coupled to a bus. The bus may be a DC bus or an AC bus. The input converter is configured to convert the input DC waveform to a DC or AC bus waveform. The output converter is configured to convert the bus waveform to the output AC waveform at a grid frequency. The active filter is configured to reduce a double-frequency ripple power of the bus waveform by supplying power to and absorbing power from the power bus.Type: GrantFiled: September 21, 2009Date of Patent: October 2, 2012Assignee: SolarBridge Technologies, Inc.Inventors: Patrick L. Chapman, Brian T. Kuhn, Robert S. Balog, Jonathan W. Kimball, Philip T. Krein, Alexander Gray
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Patent number: 8279649Abstract: An apparatus and method for controlling a DC-to-AC inverter is disclosed. The DC-to-AC inverter may be configured to convert DC power received from an alternative energy source to AC power for supplying an AC grid or load. The inverter may determine whether the power presently supplied by the alternative energy source is less than a predetermined amount of power and, if so, disable an output converter of the inverter. Additionally, the inverter may predict the voltage of a DC bus of the inverter at a future point in time and, if the predicted DC bus voltage is greater than a predetermined maximum DC bus voltage, enable the output converter to transfer energy from the DC bus to the AC grid to reduce the DC bus voltage.Type: GrantFiled: October 11, 2010Date of Patent: October 2, 2012Assignee: SolarBridge Technologies, Inc.Inventors: Trishan Esram, Alexander Gray, Eric Martina, Patrick L. Chapman
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Patent number: D721519Type: GrantFiled: November 4, 2013Date of Patent: January 27, 2015Assignee: Standard Fiber LLCInventors: W. Alexander Gray, III, Russ Holbrook