Patents by Inventor Francisco de Leon
Francisco de Leon 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: 20170072882Abstract: A power supply system suitable for use by an aircraft is disclosed. The power system converts power from an unregulated DC power source to multiple AC and DC voltage outputs. The power supply system comprises an interleaved buck converter, and interleaved full-bridge converter, an interleaved inverter, and a control system. In one configuration, the interleaved inverter uses high-voltage DC generated by the interleaved four-bridge converter as its power input to generate a high-voltage AC output.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Inventors: Kamiar Karimi, Shengyi Liu, Duanyang Wang, Francisco de Leon, Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Kerim Colak, Mariusz Bojarski
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Publication number: 20170053740Abstract: A novel winding method is described herein which eliminates the circulating currents for wound transformers. A first layer of a wire is wound about the core at a first set of angles. Next, a loop is pulled to form slack in the wire and the wire is continued to be wound at a second set of angles. The loop provides sufficient slack for the cutting and connecting described further below. The winding and loop pulling continues for s sequences to achieve the desired winding. The wire is then cut at each loop.Type: ApplicationFiled: August 18, 2016Publication date: February 23, 2017Inventors: Francisco De León, Saeed Jazebi
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Publication number: 20170008405Abstract: A wireless charger for an electric vehicle and a resonant inverter comprising a resonant portion that serially connects to a phase shifting portion and serially connects with a load component and a method for controlling a resonant inverter having multiple phase shifts, comprising operating the frequency of the resonant inverter close to the resonant frequency of the inverter through the full operation range of the resonant inverter; and adjusting phase shifts to control the output power of the resonant inverter.Type: ApplicationFiled: February 18, 2015Publication date: January 12, 2017Applicant: NEW YORK UNIVERSITYInventors: Mariusz Bojarski, Dariusz Czarkowski, Francisco De Leon
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Patent number: 9533638Abstract: A power supply system suitable for use by an aircraft is disclosed. The power system converts power from an unregulated DC power source to multiple AC and DC voltage outputs. The power supply system comprises an interleaved buck converter, and interleaved full-bridge converter, an interleaved inverter, and a control system. In one configuration, the interleaved inverter uses high-voltage DC generated by the interleaved four-bridge converter as its power input to generate a high-voltage AC output.Type: GrantFiled: July 18, 2013Date of Patent: January 3, 2017Assignee: The Boeing CompanyInventors: Kamiar Karimi, Shengyi Liu, Duanyang Wang, Francisco de Leon, Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Kerim Colak, Mariusz Bojarski
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Publication number: 20160307047Abstract: A system comprising a computer-readable storage medium storing at least one program and a method for determining vehicle overlap with a parking space is presented. The method may include accessing a set of pixel coordinates defining a location of a vehicle within an image, and translating the set of pixel coordinates to a set of global coordinates defining a geospatial location of the vehicle. The method may further include accessing a set of known coordinates of the parking space. The method may further include determining an overlap amount by comparing the global coordinates of the vehicle with the known global coordinates of the parking space, and determining the vehicle overlaps the parking space based on the overlap amount transgressing a threshold overlap amount. The method may further include updating a data object associated with the vehicle to indicate the vehicle overlaps the parking space.Type: ApplicationFiled: April 14, 2016Publication date: October 20, 2016Inventors: Lokesh Babu Krishnamoorthy, Francisco de Leon, Madhavi Vudumula, Aileen Margaret Hackett
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Publication number: 20160307039Abstract: A system comprising a computer-readable storage medium storing at least one program and a method for identifying and monitoring vehicles in motion is presented. The method may include accessing sets of pixel coordinates defining a location of a vehicle within a first image and a second image. The method may further include translating the sets of pixel coordinates to sets of global coordinates defining a first and second geospatial location of the vehicle. The method further includes determining the vehicle is in motion based on a comparison of the first and second geospatial locations of the vehicle. The method further includes causing presentation of a user interface that includes a geospatial map with visual indicators of the first and second geospatial location of the vehicle.Type: ApplicationFiled: April 14, 2016Publication date: October 20, 2016Inventors: Lokesh Babu Krishnamoorthy, Francisco de Leon, Madhavi Vudumula, Aileen Margaret Hackett
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Patent number: 9425693Abstract: A voltage conversion system and methods are disclosed. Voltage converter cells are controlled using interleaved phase-shift modulation signals, and convert an input electrical current at an input voltage to an output electrical current at an output voltage. Each of the voltage converter cells comprises: a transformer comprising a primary side and a secondary side, a full-bridge voltage converter connected in parallel to the primary side, and center-tapped rectifiers connected in series to the secondary side. One or more group of outputs of the voltage converters are coupled in series via the center-tapped rectifiers.Type: GrantFiled: June 24, 2014Date of Patent: August 23, 2016Assignee: The Boeing CompanyInventors: Duanyang Wang, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Lijun Gao, Shengyi Liu
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Publication number: 20160232411Abstract: A system comprising a computer-readable storage medium storing at least one program and a method for monitoring parking rule violations is presented. The method may include accessing a set of pixel coordinates defining a location of a vehicle within an image. The method may further include determining occupancy of a parking space depicted in the image based on the set of pixel coordinates, and determining a violation of a parking rule based on the occupancy of the parking space by the vehicle. The method may further include generating presentation data corresponding to a user interface that includes a geospatial map of an area that includes the parking space, and a visual indicator of the violation on the geospatial map at a location of the parking space. The method may further include causing presentation of the user interface on a client device communicatively coupled to the system.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Inventors: Lokesh Babu Krishnamoorthy, Madhavi Vudumula, Francisco de Leon, Aileen Margaret Hackett, Kevin Koji Okamoto, Siong Ming Lim
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Patent number: 9401633Abstract: A method and apparatus for converting direct current into alternating current. The direct current is converted into a number of alternating currents using a switch system. The number of alternating currents is filtered using a set of inductors and a set of capacitors. Higher-frequency electromagnetic interference is blocked using a choke located between the set of inductors and the set of capacitors.Type: GrantFiled: January 24, 2014Date of Patent: July 26, 2016Assignee: The Boeing CompanyInventors: Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Shengyi Liu
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Publication number: 20160176301Abstract: A system for wirelessly charging an electric vehicle comprises a wireless charging coil having a first end, a second end, and a plurality of turns. The first end has a first turn having a first radius r1 and the second end has an Nth turn having an Nth radius rN, rN<r1 such that the wireless charging coil is funnel shaped, where, an ascending distance between each adjacent turn of the wireless charging coil is: ?j,j+1?=?j+i?3,j+i?2+(?34???i,i+1), for j?4 and rj+1?>0 where, ?j,j+1?=rj??rj+1? is the distance between adjacent turns, ? is between 0.05% and 0.2%, i is 2 to N; j is 1 to N; and ?34? is an ascending distance between the third turn and the fourth turn.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Applicant: New York UniversityInventors: Jingduo Huang, Dariusz Czarkowski, Francisco De Leon, Mariusz Bojarski
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Publication number: 20160126731Abstract: A programmable AC load in communication with an equipment under test (EUT) is disclosed. The EUT generates an equipment under test voltage. The programmable alternating current (AC) load includes an active load profiler (ALP), a grid-connecter inverter, and an operational mode selector. The operational mode selector is in communication with an AC side of the grid-connected inverter. The operational mode selector places the programmable AC load in either a regenerative mode where the equipment under test voltage is sent to a main grid or a dissipative mode where the equipment under test voltage is dissipated by heat.Type: ApplicationFiled: October 30, 2014Publication date: May 5, 2016Inventors: Dazhong Gu, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Eugene V. Solodovnik, Shengyi Liu
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Patent number: 9331594Abstract: A method and apparatus for converting direct current into alternating current. An initial voltage level of an input voltage source is changed using a dual converter to form a plurality of voltage sources. Each of the plurality of voltage sources has voltage levels different from the initial voltage level. An inverter is supplied direct current from the plurality of voltage sources formed by the dual converter. The direct current is converted into a number of alternating currents using the inverter.Type: GrantFiled: January 24, 2014Date of Patent: May 3, 2016Assignee: THE BOEING COMPANYInventors: Dazhong Gu, Qingquan Tang, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Shengyi Liu
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Publication number: 20150214854Abstract: A method and apparatus for converting direct current into alternating current. An initial voltage level of an input voltage source is changed using a dual converter to form a plurality of voltage sources. Each of the plurality of voltage sources has voltage levels different from the initial voltage level. An inverter is supplied direct current from the plurality of voltage sources formed by the dual converter. The direct current is converted into a number of alternating currents using the inverter.Type: ApplicationFiled: January 24, 2014Publication date: July 30, 2015Applicant: The Boeing CompanyInventors: Dazhong Gu, Qingquan Tang, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Shengyi Liu
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Publication number: 20150214832Abstract: A method and apparatus for converting direct current into alternating current. The direct current is converted into a number of alternating currents using a switch system. The number of alternating currents is filtered using a set of inductors and a set of capacitors. Higher-frequency electromagnetic interference is blocked using a choke located between the set of inductors and the set of capacitors.Type: ApplicationFiled: January 24, 2014Publication date: July 30, 2015Applicant: THE BOEING COMPANYInventors: Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Shengyi Liu
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Patent number: 9048726Abstract: A control system for a power drive section of a three-phase system is disclosed. The control system comprises a positive sequence channel, a negative sequence channel, and a zero sequence channel. The positive sequence channel processes positive sequence error signals, the negative sequence channel processes negative sequence error signals, and the zero sequence channel processes zero sequence error signals. Each sequence channel includes a harmonic repetitive controller, a repetitive controller compensator, and a fundamental frequency controller configured to operate in parallel with the harmonic repetitive controller and repetitive controller compensator. Both the repetitive controller compensator of the negative sequence channel and the repetitive controller compensator of the positive sequence channel are configured with the same, first frequency response.Type: GrantFiled: March 11, 2013Date of Patent: June 2, 2015Assignee: The Boeing CompanyInventors: Qingquan Tang, Dariusz Czarkowski, Francisco de Leon, Kamiar Karimi, Shengyi Liu
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Patent number: 8964432Abstract: A power conversion system is disclosed that provides multiphase power, including phase voltages for each phase of the multiphase power. The system comprises a plurality of inverters that generate PWM output voltages based on PWM control signals. A plurality of inductive components is configured to receive the PWM output voltages to generate the phase voltages. The PWM output voltages cause circulating current flows through the inductive components. A voltage controller is employed that is responsive to the phase voltages to generate voltage modulation signals corresponding to the phase voltages. A plurality of current sharing channels are respectively associated with each of the plurality of inductive components and are configured generate current sharing modulation signals in response to the circulating current flows. The PWM control signals are generated based on modulation signals obtained by combining the current sharing modulation signals and voltage modulation signals.Type: GrantFiled: January 29, 2013Date of Patent: February 24, 2015Assignee: The Boeing CompanyInventors: Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Francisco de Leon, Kamiar Karimi, Shengyi Liu
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Publication number: 20150028989Abstract: Toroidal transformers are currently used only in low-voltage applications. There is no published experience for toroidal transformer design at distribution-level voltages. Toroidal transformers are provided with electrostatic shielding to make possible high voltage applications and withstand the impulse test.Type: ApplicationFiled: July 22, 2014Publication date: January 29, 2015Inventor: Francisco De Leon
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Publication number: 20150021983Abstract: A power supply system suitable for use by an aircraft is disclosed. The power system converts power from an unregulated DC power source to multiple AC and DC voltage outputs. The power supply system comprises an interleaved buck converter, and interleaved full-bridge converter, an interleaved inverter, and a control system. In one configuration, the interleaved inverter uses high-voltage DC generated by the interleaved four-bridge converter as its power input to generate a high-voltage AC output.Type: ApplicationFiled: July 18, 2013Publication date: January 22, 2015Inventors: Kamiar Karimi, Shengyi Liu, Duanyang Wang, Francisco de Leon, Qingquan Tang, Dazhong Gu, Dariusz Czarkowski, Kerim Colak, Mariusz Bojarski
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Publication number: 20150021994Abstract: A power supply system is disclosed that includes a first interleaved power supply, a second interleaved power supply, and a common electromagnetic interference filter. The common electromagnetic interference filter is configured to provide DC power from a DC power source to both the first interleaved power supply and the second interleaved power supply. In one example, the common electromagnetic interference filter comprises a localized filter stage configured to receive DC power from the DC power source, and a distributed filter stage configured to receive DC power from the localized filter stage. The distributed filter stage includes a first set of common mode capacitors electrically connected to and physically proximate input power lines of the first interleaved power supply, and a second set of common mode capacitors electrically connected to and physically proximate input power lines of the second interleaved power supply.Type: ApplicationFiled: September 23, 2013Publication date: January 22, 2015Applicant: The Boeing CompanyInventors: Mariusz Bojarski, Kerim Colak, Dazhong Gu, Duanyang Wang, Qingquan Tang, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Shengyi Liu
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Publication number: 20140307481Abstract: A voltage conversion system and methods are disclosed. Voltage converter cells are controlled using interleaved phase-shift modulation signals, and convert an input electrical current at an input voltage to an output electrical current at an output voltage. Each of the voltage converter cells comprises: a transformer comprising a primary side and a secondary side, a full-bridge voltage converter connected in parallel to the primary side, and center-tapped rectifiers connected in series to the secondary side. One or more group of outputs of the voltage converters are coupled in series via the center-tapped rectifiers.Type: ApplicationFiled: June 24, 2014Publication date: October 16, 2014Inventors: Duanyang Wang, Dariusz Czarkowski, Francisco de Leon, Kamiar J. Karimi, Lijun Gao, Shengyi Liu