Patents by Inventor Matthias Preindl
Matthias Preindl 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: 20240125865Abstract: Disclosed are systems, methods, and other implementations, including a method for managing battery performance that includes measuring voltage response data for a lithium-ion battery in response to a current pulse perturbation injected into the lithium-ion battery, and determining in real-time, based on the measured voltage response data, resultant degradation data representative of estimated physical degradation of the lithium-ion battery.Type: ApplicationFiled: October 4, 2023Publication date: April 18, 2024Inventors: Alan Gen Li, Alan C. West, Matthias Preindl
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Publication number: 20240125862Abstract: Disclosed are systems, methods, and other implementations, including a method for monitoring and managing battery performance that includes deriving a representation of diffusion overpotential behavior for a lithium-ion battery according to a discrete-time state-space approximation of a convolution-defined diffusion (CDD) model for the lithium-ion battery, and determining behavior of the lithium-ion battery according to the discrete-time state-space approximation of the convolution-defined diffusion (CDD) model for the lithium-ion battery.Type: ApplicationFiled: October 4, 2023Publication date: April 18, 2024Applicant: The Trustees of Columbia University in the City of New YorkInventors: Alan Gen Li, Matthias Preindl
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Patent number: 11936255Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.Type: GrantFiled: June 9, 2023Date of Patent: March 19, 2024Assignee: Tau Motors, Inc.Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
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Patent number: 11912147Abstract: A system may mitigate leakage currents in non-isolated charging stations for electric vehicles. The system may include a bank of one or more parallel capacitors per phase electrically coupled to an AC voltage source, wherein a neutral point of the one or more parallel capacitors is electrically coupled to a DC ground; a bank of one or more inductors per phase electrically coupled to the one or more parallel capacitors, wherein each inductor is in series with and downstream from one capacitor; a rectifier electrically coupled to and downstream from the one or more parallel inductors, wherein the rectifier converts the AC voltage source to a DC voltage for supply to a battery; a DC bus electrically coupled to the rectifier; and a controller, wherein the controller is configured to mitigate leakage currents by controlling a voltage of at least one of the bank of one or more parallel capacitors.Type: GrantFiled: February 11, 2021Date of Patent: February 27, 2024Assignees: The Trustees of Columbia University in the City of New York, Longmax Corporation LTD.Inventors: William-Michael Eull, Liwei Zhou, Weizhong Wang, Gangqi Cen, Matthias Preindl
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Publication number: 20240014721Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.Type: ApplicationFiled: June 9, 2023Publication date: January 11, 2024Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
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Publication number: 20240014751Abstract: A parallel inverter system for solar tracker systems minimizes circulating currents, mitigates ripple, and increases efficiency. The parallel inverter system includes inverters coupled together in parallel, a common DC bus coupled between a DC load and inputs of the inverters, a common AC bus coupled between outputs of the inverters and an electrical power grid, and a common-mode filter coupled to the output of each of the inverters. The parallel inverter system also includes controllers coupled to the inverters, respectively, the controllers configured to generate interleaved pulse width modulation (PWM) signals, respectively. The PWM signals are synchronized with each other. The PWM signals may be synchronized with each other via the EtherCAT protocol.Type: ApplicationFiled: July 10, 2023Publication date: January 11, 2024Inventors: Matthias Preindl, Yang Liu, Alexander W. AU
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Publication number: 20230412087Abstract: Disclosed are methods, systems, devices, and other implementations, including a voltage converter system that includes a plurality of energy storage elements, a plurality of switching devices, each of which is in electrical communication with at least one of the plurality of the storage elements, with the plurality of storage elements and the plurality of switching devices being configured in a multi-level arrangement of multiple voltage converting cells. The system further includes a plurality of controllers to actuate one or more of the plurality of switching devices to independently control voltage levels of at least one energy storage element of the multiple voltage converting cells. In some embodiments, the cells may include an arrangement of two capacitors and an inductor that define a buck-boost converter circuit. Alternatively, the cells may have a Dual Active Half Bridge (DAHB) converter configuration with a primary side separated from a secondary side by a transformer.Type: ApplicationFiled: August 31, 2023Publication date: December 21, 2023Inventors: Matthias Preindl, Matthew Jahnes
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Publication number: 20230387779Abstract: Disclosed are methods, systems, devices, and other implementations, including a voltage converter device that includes one or more inductive elements to deliver inductor current to an output section of the voltage converter device, at least one switching device to control current flow at the output section of the voltage converter device, and a controller to controllably vary, according to a predictive model, a subsequently applied switching frequency to the at least one switching device to maintain zero-voltage switching based, at least in part, on the inductor current of the one or more inductive elements.Type: ApplicationFiled: June 6, 2023Publication date: November 30, 2023Inventors: Matthias Preindl, Liwei Zhou
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Publication number: 20230387842Abstract: Disclosed are implementations, including a method that includes obtaining measurement samples relating to electrical operation of an electric motor drive providing power to an electric motor, deriving, based on the samples, instantaneous estimates for parameters characterizing speed and/or position of the motor according to an optimization process based on a cost function defined for the samples, and applying a filtering operation to the instantaneous estimates to generate filtered values of the motor's speed and/or position. The filtering operation includes computing the filtered values using the derived instantaneous estimates in response to a determination that a computed convexity of the cost function is greater than or equal to a convexity threshold value, and/or applying a least-squares filtering operation to the derived instantaneous estimates and using at least one set of previous estimates derived according to the optimization process applied to previous measurement samples.Type: ApplicationFiled: April 21, 2023Publication date: November 30, 2023Inventor: Matthias Preindl
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Patent number: 11757338Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.Type: GrantFiled: August 2, 2021Date of Patent: September 12, 2023Assignee: Tau Motors, Inc.Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
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Publication number: 20230280410Abstract: An approach to control or monitoring of battery operation makes use of an artificial neural network (ANN), which receives one or more battery attributes for a Lithium ion (Li-ion) battery, and determines, based on the received one or more battery attributes, a state-of-charge (SOC) and/or a state-of-health (SOH) estimate for the Li-ion battery. The ANN includes at least one of a recurrent neural network (RNN) and a convolutional neural network (CNN), and the series of values of the battery attributes includes at one of battery voltage values, battery current values, and battery temperature values.Type: ApplicationFiled: March 7, 2023Publication date: September 7, 2023Inventors: Ephram Chemali, Matthias Preindl
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Patent number: 11711009Abstract: Disclosed are methods, systems, devices, and other implementations, including a voltage converter device that includes one or more inductive elements to deliver inductor current to an output section of the voltage converter device, at least one switching device to control current flow at the output section of the voltage converter device, and a controller to controllably vary, according to a predictive model, a subsequently applied switching frequency to the at least one switching device to maintain zero-voltage switching based, at least in part, on the inductor current of the one or more inductive elements.Type: GrantFiled: October 21, 2020Date of Patent: July 25, 2023Assignee: The Trustees of Columbia University in the City of New YorkInventors: Matthias Preindl, Liwei Zhou
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Publication number: 20230231444Abstract: An electric machine includes a stator defining multiple stator poles with associated stator windings configured to receive a stator current. The electric machine also includes a rotor defining multiple fixed rotor poles with associated rotor windings, wherein the rotor defines a field energizable by magnetic fields produced by the stator windings when receiving the stator current to produce relative motion between the rotor and the stator and wherein the rotor is maintained in synchronicity with the magnetic fields produced by the stator during operation of the electric machine. The electric machine also includes a rectification system configured control against an alternating current being induced in the rotor poles as the field is energized by magnetic fields produced by the stator windings when receiving the stator current.Type: ApplicationFiled: March 7, 2023Publication date: July 20, 2023Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
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Patent number: 11671042Abstract: Disclosed are implementations, including a method that includes obtaining measurement samples relating to electrical operation of an electric motor drive providing power to an electric motor, deriving, based on the samples, instantaneous estimates for parameters characterizing speed and/or position of the motor according to an optimization process based on a cost function defined for the samples, and applying a filtering operation to the instantaneous estimates to generate filtered values of the motor's speed and/or position. The filtering operation includes computing the filtered values using the derived instantaneous estimates in response to a determination that a computed convexity of the cost function is greater than or equal to a convexity threshold value, and/or applying a least-squares filtering operation to the derived instantaneous estimates and using at least one set of previous estimates derived according to the optimization process applied to previous measurement samples.Type: GrantFiled: September 24, 2021Date of Patent: June 6, 2023Assignee: Tire Trustees of Columbia University in the City of New YorkInventor: Matthias Preindl
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Publication number: 20230145709Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.Type: ApplicationFiled: August 2, 2021Publication date: May 11, 2023Inventors: Walter Wesley PENNINGTON, III, Matthew J. RUBIN, Gregory Gordon STEVENSON, Michael Parker OWEN, Ethan BAGGET SWINT, Matthias PREINDL
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Patent number: 11637481Abstract: An electric machine includes a stator defining multiple stator poles with associated stator windings configured to receive a stator current. The electric machine also includes a rotor defining multiple fixed rotor poles with associated rotor windings, wherein the rotor defines a field energizable by magnetic fields produced by the stator windings when receiving the stator current to produce relative motion between the rotor and the stator and wherein the rotor is maintained in synchronicity with the magnetic fields produced by the stator during operation of the electric machine. The electric machine also includes a rectification system configured control against an alternating current being induced in the rotor poles as the field is energized by magnetic fields produced by the stator windings when receiving the stator current.Type: GrantFiled: August 2, 2021Date of Patent: April 25, 2023Assignee: Tau Motors, Inc.Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
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Patent number: 11637331Abstract: An approach to control or monitoring of battery operation makes use of an artificial neural network (ANN), which receives one or more battery attributes for a Lithium ion (Li-ion) battery, and determines, based on the received one or more battery attributes, a state-of-charge (SOC) and/or a state-of-health (SOH) estimate for the Li-ion battery. The ANN includes at least one of a recurrent neural network (RNN) and a convolutional neural network (CNN), and the series of values of the battery attributes includes at one of battery voltage values, battery current values, and battery temperature values.Type: GrantFiled: November 19, 2019Date of Patent: April 25, 2023Assignees: The Trustees of Columbia University in the City of New York, McMaster UniversityInventors: Ephram Chemali, Matthias Preindl
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Publication number: 20220271549Abstract: An approach to control or monitoring of battery operation makes use of a recurrent neural network (RNN), which receives one or more battery attributes for a Lithium ion (Li-ion) battery, and determines, based on the received one or more battery attributes, a state-of-charge (SOC) estimate for the Li-ion battery.Type: ApplicationFiled: October 8, 2021Publication date: August 25, 2022Inventors: Ephram Chemali, Matthias Preindl
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Publication number: 20220255480Abstract: Disclosed are implementations, including a method that includes obtaining measurement samples relating to electrical operation of an electric motor drive providing power to an electric motor, deriving, based on the samples, instantaneous estimates for parameters characterizing speed and/or position of the motor according to an optimization process based on a cost function defined for the samples, and applying a filtering operation to the instantaneous estimates to generate filtered values of the motor's speed and/or position. The filtering operation includes computing the filtered values using the derived instantaneous estimates in response to a determination that a computed convexity of the cost function is greater than or equal to a convexity threshold value, and/or applying a least-squares filtering operation to the derived instantaneous estimates and using at least one set of previous estimates derived according to the optimization process applied to previous measurement samples.Type: ApplicationFiled: September 24, 2021Publication date: August 11, 2022Inventor: Matthias Preindl
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Patent number: 11171498Abstract: An approach to control or monitoring of battery operation makes use of a recurrent neural network (RNN), which receives one or more battery attributes for a Lithium ion (Li-ion) battery, and determines, based on the received one or more battery attributes, a state-of-charge (SOC) estimate for the Li-ion battery.Type: GrantFiled: November 19, 2018Date of Patent: November 9, 2021Assignees: The Trustees of Columbia University in the City of New York, McMaster UniversityInventors: Ephram Chemali, Matthias Preindl