Patents by Inventor Daniel DIAZ-LOPEZ
Daniel DIAZ-LOPEZ 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: 11613444Abstract: A power management system comprises an AC-power-source controller configured to control power supply between the AC power source and a common DC bus, the AC-power-source controller further configured to limit AC power supplied from the AC power source to the common DC bus to a first AC-power-source power limit; a power inverter configured to invert the DC power on the common DC bus into AC output power for driving the electric motor; a DC power source configured to supply DC power to the common DC bus; and a DC-power-source controller configured to control power supply between the DC power source and the common DC bus, the DC-power-source controller further configured to start supplying DC power from the DC power source to the common DC bus in response to a detection of a voltage drop on the common DC bus from a AC-power-source reference voltage to a DC-power-source reference voltage.Type: GrantFiled: October 16, 2019Date of Patent: March 28, 2023Assignee: OTIS ELEVATOR COMPANYInventors: Virgilio Valdivia Guerrero, Ismail Agirman, Daniel Diaz-Lopez, Mario Sanz Abia, Herbert Horbrugger, Stephan Glessner
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Patent number: 11067496Abstract: A new system is described that is able to detect mechanical failures in a rotating shaft or shafts such as those which may be found in an aircraft or other mechanical device or vehicle. The system comprises a first accelerometer provided on the rotating shaft to be monitored and a reference accelerometer provided elsewhere. The system can compensate information received from these accelerometers so as to determine a fault in the rotating shaft that is being monitored.Type: GrantFiled: September 21, 2018Date of Patent: July 20, 2021Assignee: GOODRICH ACTUATION SYSTEMS LIMITEDInventors: Fabien Dubois, Laura Albiol-Tendillo, Daniel Diaz-Lopez
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Patent number: 10972031Abstract: The present disclosure provides a system and method that provides active damping at the input of a motor drive system without the need for the hardware used in conventional and RC damping circuits. According to the disclosure a virtual damping network is realised at the input of the motor drive system based on modification of field-oriented control, FOC. More specifically, a control algorithm creates a virtual damping impedance at the motor drive input by applying a damping algorithm to both q and d components of the motor current.Type: GrantFiled: July 10, 2018Date of Patent: April 6, 2021Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Virgilio Valdivia Guerrero, Joshua Parkin, Thomas Gietzold, Grzegorz Popek, Daniel Diaz-Lopez
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Publication number: 20200122962Abstract: A power management system comprises an AC-power-source controller configured to control power supply between the AC power source and a common DC bus, the AC-power-source controller further configured to limit AC power supplied from the AC power source to the common DC bus to a first AC-power-source power limit; a power inverter configured to invert the DC power on the common DC bus into AC output power for driving the electric motor; a DC power source configured to supply DC power to the common DC bus; and a DC-power-source controller configured to control power supply between the DC power source and the common DC bus, the DC-power-source controller further configured to start supplying DC power from the DC power source to the common DC bus in response to a detection of a voltage drop on the common DC bus from a AC-power-source reference voltage to a DC-power-source reference voltage.Type: ApplicationFiled: October 16, 2019Publication date: April 23, 2020Inventors: Virgilio Valdivia Guerrero, Ismail Agirman, Daniel Diaz-Lopez, Mario Sanz Abia, Herbert Horbrugger, Stephan Glessner
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Publication number: 20200122960Abstract: A power management system for an elevator system. A power management system for an elevator system includes a power converter having three input terminals, two of the three input terminals coupled to a main power source for supplying single-phase AC power to the power management system, the power converter configured to convert the AC power from the main power source into DC power on a common DC bus, a secondary power source for supplying DC power to the common DC bus, a power inverter configured to invert the DC power on the common DC bus into AC output power for driving an electric motor of the elevator system, and a dynamic braking resistor which is coupled between a third input terminal among the three input terminals of the three-phase power converter and the common DC bus.Type: ApplicationFiled: October 16, 2019Publication date: April 23, 2020Inventors: Virgilio Valdivia Guerrero, Ismail Agirman, Daniel Diaz-Lopez, Mario Sanz Abia, Stephan Glessner, Herbert Horbrugger
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Publication number: 20200122961Abstract: A power management system for an elevator system includes a power converter having input terminals coupled to an AC power source supplying AC power to the power management system and output terminals coupled to a common DC bus, the power converter configured to convert the AC power from the AC power source into DC power on the common DC bus and vice versa; an AC load coupled to the input terminals of the power converter; a second power source for supplying DC power to the common DC bus; a power inverter configured to invert the DC power on the common DC bus into AC output power for driving an electric motor of the elevator system; and a controller configured to detect a failure of the AC power source.Type: ApplicationFiled: October 18, 2019Publication date: April 23, 2020Inventors: Virgilio Valdivia Guerrero, Daniel Diaz-Lopez, Mario Sanz Abia, Herbert Horbrugger, Stephan Glessner
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Patent number: 10518898Abstract: Systems for exchanging information between a cargo handling system of an aircraft and a Power Drive Unit (PDU) are described herein. The systems include a power source provided within the aircraft and a first PDU provided within the aircraft. The power source is capable of providing DC power to the at least one PDU via an electrical power line. The power source further including a first Power Line Communication (PLC) node and the PDU further including a second Power Line Communication (PLC) node. The first PLC node being capable of communicating with the second PLC node via the electrical power line.Type: GrantFiled: May 13, 2016Date of Patent: December 31, 2019Assignee: GOODRICH CORPORATIONInventors: Daniel Diaz Lopez, Piyush Agrawal, Raymond Foley, William A. Veronesi, Scott Harms
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Publication number: 20190162651Abstract: A new system is described that is able to detect mechanical failures in a rotating shaft or shafts such as those which may be found in an aircraft or other mechanical device or vehicle. The system comprises a first accelerometer provided on the rotating shaft to be monitored and a reference accelerometer provided elsewhere, and further comprising means for comparing information received from these accelerometers so as to determine a fault in the rotating shaft that is being monitored.Type: ApplicationFiled: September 21, 2018Publication date: May 30, 2019Inventors: Fabien DUBOIS, Laura ALBIOL-TENDILLO, Daniel DIAZ-LOPEZ
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Publication number: 20190089281Abstract: The present disclosure provides a system and method that provides active damping at the input of a motor drive system without the need for the hardware used in conventional and RC damping circuits. According to the disclosure a virtual damping network is realised at the input of the motor drive system based on modification of field-oriented control, FOC. More specifically, a control algorithm creates a virtual damping impedance at the motor drive input by applying a damping algorithm to both q and d components of the motor current.Type: ApplicationFiled: July 10, 2018Publication date: March 21, 2019Inventors: Virgilio VALDIVIA GUERRERO, Joshua PARKIN, Thomas GIETZOLD, Grzegorz POPEK, Daniel DIAZ-LOPEZ
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Patent number: 10199161Abstract: The present improvement essentially integrates a DC link inductance within an interphase power transformer (IPT). The integration is achieved by creating auxiliary magnetic paths for leakage inductance inside the IPT core. The magnetic path can be created, for example, by incorporating extra portions of magnetic material commonly referred to hereinafter as shunts. The IPT flux shared between windings does not cross these shunts. Therefore, this magnetic path increases the self-inductance of the IPT but does not contribute to the mutual inductance between windings. This extra magnetic path allows for leakage inductance of a much higher quantity than that achievable with a conventional IPT.Type: GrantFiled: February 15, 2017Date of Patent: February 5, 2019Assignee: GOODRICH CONTROL SYSTEMSInventors: Virgilio Valdivia-Guerrero, Daniel Diaz-Lopez, Joshua Parkin
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Publication number: 20170327242Abstract: Systems for exchanging information between a cargo handling system of an aircraft and a Power Drive Unit (PDU) are described herein. The systems include a power source provided within the aircraft and a first PDU provided within the aircraft. The power source is capable of providing DC power to the at least one PDU via an electrical power line. The power source further including a first Power Line Communication (PLC) node and the PDU further including a second Power Line Communication (PLC) node. The first PLC node being capable of communicating with the second PLC node via the electrical power line.Type: ApplicationFiled: May 13, 2016Publication date: November 16, 2017Inventors: Daniel Diaz Lopez, Piyush Agrawal, Raymond Foley, William A. Veronesi, Scott Harms
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Publication number: 20170250023Abstract: The present improvement essentially integrates a DC link inductance within an interphase power transformer (IPT). The integration is achieved by creating auxiliary magnetic paths for leakage inductance inside the IPT core. The magnetic path can be created, for example, by incorporating extra portions of magnetic material commonly referred to hereinafter as shunts. The IPT flux shared between windings does not cross these shunts. Therefore, this magnetic path increases the self-inductance of the IPT but does not contribute to the mutual inductance between windings. This extra magnetic path allows for leakage inductance of a much higher quantity than that achievable with a conventional IPT.Type: ApplicationFiled: February 15, 2017Publication date: August 31, 2017Inventors: Virgilio VALDIVIA-GUERRERO, Daniel DIAZ-LOPEZ, Joshua PARKIN