Patents by Inventor James David

James David 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).

  • Thermal management of active discharge function in automotive inverters
    Patent number: 12351037
    Abstract: A thermal management system for an automotive inverter includes an active discharge circuit in thermal communication with a DC link capacitor, a thermal interface material positioned between the active discharge circuit and the DC link capacitor such that heat generated from the active discharge circuit is transferred to the DC link capacitor, and a coolant channel for a cooling fluid extending between the DC link capacitor and a base plate of the automotive inverter, wherein the heat generated from the active discharge circuit of the automotive inverter is transferred from the DC link capacitor to dissipate the heat. A method to thermally manage heat dissipated from automotive inverter is also provided.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: July 8, 2025
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: James David, Neeraj Sharma, Amit Ravindra Chavan, Ravikiran Panjabrao Rathod, Matthew Charles Haylock
  • Fuse and contactor management for an electric mobile application
    Patent number: 12187159
    Abstract: A system includes a vehicle including a motive electrical power path; a power distribution unit including: a current protection circuit disposed in the motive electrical power path, the current protection circuit including a fuse and a contactor in a series arrangement with the fuse; a high voltage power input coupling including a first electrical interface for a high voltage power source; and a high voltage power output coupling including a second electrical interface for a motive power load, where the current protection circuit electrically couples the high voltage power input coupling to the high voltage power output coupling.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 7, 2025
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Robert Stephen Douglass, Brandon William Fisher, Martin Wayne Mensch, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni
  • THERMAL MANAGEMENT OF ACTIVE DISCHARGE FUNCTION IN AUTOMOTIVE INVERTERS
    Publication number: 20240278648
    Abstract: A thermal management system for an automotive inverter includes an active discharge circuit in thermal communication with a DC link capacitor, a thermal interface material positioned between the active discharge circuit and the DC link capacitor such that heat generated from the active discharge circuit is transferred to the DC link capacitor, and a coolant channel for a cooling fluid extending between the DC link capacitor and a base plate of the automotive inverter, wherein the heat generated from the active discharge circuit of the automotive inverter is transferred from the DC link capacitor to dissipate the heat. A method to thermally manage heat dissipated from automotive inverter is also provided.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 22, 2024
    Inventors: James DAVID, Neeraj SHARMA, Amit Ravindra CHAVAN, Ravikiran Panjabrao RATHOD, Matthew Charles HAYLOCK
  • Power distribution unit with a configurable offset voltage for fuse current determination
    Patent number: 11664649
    Abstract: An apparatus to determine offset voltage to adjust a fuse current determination including a fuse load circuit structured to determine that no current is demanded for a fuse load, and to further determine that contactors associated with the fuse are open, an offset voltage determination circuit structured to determine an offset voltage corresponding to at least one component in a fuse circuit associated with the fuse, in response to the determining that no current is demanded for the fuse load, and an offset data management circuit structured to store the offset voltage, and to communicate a current calculation offset voltage for use by a controller to determine current flow through the fuse.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: May 30, 2023
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Brandon William Fisher, James David, Asheesh Soni
  • System, method, and apparatus for multi-port power converter and inverter assembly
    Patent number: 11658477
    Abstract: A multi-port power converter includes a housing that includes a plurality of ports structured to electrically interface to a plurality of loads, the plurality of loads having distinct electrical characteristics. The multi-port power converter also includes a plurality of solid state components configured to provide selected electrical power outputs and to accept selected electrical power inputs and a plurality of solid state switches configured to provide selected connectivity between the plurality of solid state components and the plurality of ports.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: May 23, 2023
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni, Karsten Gerving, Guido Vollmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'Amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Justin Keith Griffiths
  • CONTACTOR DAMAGE AND DIAGNOSTICS
    Publication number: 20220337070
    Abstract: A method includes interpreting a contactor open event and a contactor load value for a contactor positioned on a motive power circuit for a mobile application, determining that a contactor opening event under load has occurred in response to the contactor open event and the contactor load value, and updating a contactor wear condition in response to the contactor opening event under load, wherein updating the contactor wear condition comprises accumulating a number of the contactor opening events under load.
    Type: Application
    Filed: May 5, 2022
    Publication date: October 20, 2022
    Inventors: Justin Keith Griffiths, Nilesh Surase, Ritika Shetty, Shalini Tripathy, Somdut Dey, Madhavi Gupta, Mayura Madane, Sadiya Qureshi, Toseed Khan, Amit Chavan, Kumar Prasad Telikepalli, Atul Solvande, Hao Wang, Jiong Chen, Yueyue Deng, Jason Carroll, Srinivasan Arjun Tekalur, Jacob William Green, Ashok Chakravarthi Kandru, Cheng Luo, Tianyang Jiang, Cheng Wan, Ye Zhu, John Trublowski, Robert Stephen Douglass, Rajen Modi, Nilay Mehta, Laura Natali Valencia Fritsch, Han Li, Dongxin JIn, Lewei Qian, Jun Li, Hongrae Kim, Daniel R. Ouwenga, Patrick Herranz, Miroslav Horejs, Rohit Baranwal, Zhe Zhang, Martin Wayne Mensch, Brandon William Fisher, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Kumar Suda, Asheesh Kumar Soni, Rene Guy Gallet, Michael Scott Sullivan, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'Amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Anvaya R. Hingangave, Devendra Patil
  • FUSE AND CONTACTOR MANAGEMENT FOR AN ELECTRIC MOBILE APPLICATION
    Publication number: 20220274504
    Abstract: A system includes a vehicle including a motive electrical power path; a power distribution unit including: a current protection circuit disposed in the motive electrical power path, the current protection circuit including a fuse and a contactor in a series arrangement with the fuse; a high voltage power input coupling including a first electrical interface for a high voltage power source; and a high voltage power output coupling including a second electrical interface for a motive power load, where the current protection circuit electrically couples the high voltage power input coupling to the high voltage power output coupling.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 1, 2022
    Inventors: Robert Stephen Douglass, Brandon William Fisher, Martin Wayne Mensch, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni
  • Fuse and contactor management for an electric mobile application
    Patent number: 11370324
    Abstract: A system includes a vehicle including a motive electrical power path; a power distribution unit including: a current protection circuit disposed in the motive electrical power path, the current protection circuit including a fuse and a contactor in a series arrangement with the fuse; a high voltage power input coupling including a first electrical interface for a high voltage power source; and a high voltage power output coupling including a second electrical interface for a motive power load, where the current protection circuit electrically couples the high voltage power input coupling to the high voltage power output coupling.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 28, 2022
    Assignee: Eaton Intelligent Power Limited
    Inventors: Robert Stephen Douglass, Brandon William Fisher, Martin Wayne Mensch, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni
  • System, method, and apparatus for power distribution in an electric mobile application using a combined breaker and relay
    Patent number: 11070049
    Abstract: A mobile application includes a motive power circuit having a power storage device and an electrical load, where the power storage device and the electrical load are selectively electrically coupled through a power bus. The application includes a power distribution unit (PDU) electrically interposed between the power storage device and the electrical load, where the PDU includes a breaker/relay positioned on one of a high side and a low side of the power storage device. The breaker/relay includes a fixed contact and a moveable contact selectively electrically coupled to the fixed contact, where the moveable contact allows power flow through the power bus when electrically coupled to the fixed contact, and prevents power flow through the power bus when not electrically coupled to the fixed contact. The breaker/relay includes an armature coupled to the moveable contact, and capable to open or close the motive power circuit.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: July 20, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Justin Keith Griffiths
  • SYSTEM, METHOD, AND APPARATUS FOR MULTI-PORT POWER CONVERTER AND INVERTER ASSEMBLY
    Publication number: 20210218242
    Abstract: A multi-port power converter includes a housing that includes a plurality of ports structured to electrically interface to a plurality of loads, the plurality of loads having distinct electrical characteristics. The multi-port power converter also includes a plurality of solid state components configured to provide selected electrical power outputs and to accept selected electrical power inputs and a plurality of solid state switches configured to provide selected connectivity between the plurality of solid state components and the plurality of ports.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Justin Keith Griffiths
  • Power distribution unit and fuse management for an electric mobile application
    Patent number: 11052784
    Abstract: A system include a vehicle having a motive electrical power path and a power distribution unit (PDU). The PDU includes a current protection circuit disposed in the motive electrical power path, the current protection circuit including a thermal fuse and a contactor in a series arrangement with the thermal fuse, and a high voltage power input coupling having a first electrical interface for a high voltage power source. The high voltage power output coupling includes a second electrical interface for a motive power load. The current protection circuit electrically couples the high voltage power input to the high voltage power output, and the current protection circuit is at least partially disposed in a laminated layer of the PDU. The laminated layer includes an electrically conductive flow path disposed between two electrically insulating layers.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 6, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni
  • SYSTEM, METHOD, AND APPARATUS FOR MULTI-PORT POWER CONVERTER AND INVERTER ASSEMBLY
    Publication number: 20200381915
    Abstract: A multi-port power converter includes a housing that includes a plurality of ports structured to electrically interface to a plurality of loads, the plurality of loads having distinct electrical characteristics. The multi-port power converter also includes a plurality of solid state components configured to provide selected electrical power outputs and to accept selected electrical power inputs and a plurality of solid state switches configured to provide selected connectivity between the plurality of solid state components and the plurality of ports.
    Type: Application
    Filed: August 14, 2020
    Publication date: December 3, 2020
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Justin Keith Griffiths
  • POWER DISTRIBUTION AND CIRCUIT PROTECTION FOR A MOBILE APPLICATION HAVING A HIGH EFFICIENCY INVERTER
    Publication number: 20200274375
    Abstract: A power electronics assembly for a mobile application includes a first power electronics component selectively coupled to a high source on a first side and coupled to a high voltage battery on a second side, a second power electronics component selectively coupled to one of a low load or a low voltage battery on a first side and coupled to the high voltage battery on a second side; and a controller, including an operating mode circuit structured to determine a discharge operating mode for the mobile application, a power electronics configuration circuit structured to provide a switch state value for the first power electronics component and the second power electronics component in response to the discharge operating mode, and wherein the first power electronics component and the second power electronics component are responsive to the switch state value to coupled selected ones of the high source, low load, and low voltage battery to the high voltage battery.
    Type: Application
    Filed: March 23, 2020
    Publication date: August 27, 2020
    Inventors: Justin Keith Griffiths, Nilesh Surase, Ritika Shetty, Shalini Tripathy, Somdut Dey, Madhavi Gupta, Mayura Madane, Sadiya Qureshi, Toseed Khan, Amit Chavan, Kumar Prasad Telikepalli, Atul Solvande, Hao Wang, Jiong Chen, Yueyue Deng, Jason Carroll, Srinivasan Arjun Tekalur, Jacob William Green, Chakravarthi Kandru, Cheng Luo, Tianyang Jiang, Cheng Wan, Ye Zhu, John Trublowski, Robert Stephen Douglass, Rajen Modi, Nilay Mehta, Laura Natali Valencia Fritsch, Han Li, Dongxin Jin, Lewei Qian, Jun Li, Hongrae Kim, Daniel R. Ouwenga, Patrick Herranz, Miroslav Horejs, Rohit Baranwal, Zhe Zhang, Martin Wayne Mensch, Brandon William Fisher, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Kumar Suda, Asheesh Kumar Soni, Rene Guy Gallet, Michael Scott Sullivan, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'Amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Anvaya R. Hingangave, Devendra Patil
  • POWER DISTRIBUTION UNIT WITH A CONFIGURABLE OFFSET VOLTAGE FOR FUSE CURRENT DETERMINATION
    Publication number: 20200114777
    Abstract: An apparatus to determine offset voltage to adjust a fuse current determination including a fuse load circuit structured to determine that no current is demanded for a fuse load, and to further determine that contactors associated with the fuse are open, an offset voltage determination circuit structured to determine an offset voltage corresponding to at least one component in a fuse circuit associated with the fuse, in response to the determining that no current is demanded for the fuse load, and an offset data management circuit structured to store the offset voltage, and to communicate a current calculation offset voltage for use by a controller to determine current flow through the fuse.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Brandon William Fisher, James David, Asheesh Soni
  • Electrical motor coil short detection and protection
    Patent number: 10439388
    Abstract: A fault detection method for a multi-phase motor system applies a first duty cycle to first phase coil windings and applies a second duty cycle to second phase coil windings. The second duty cycle differs from the first duty cycle by a first difference value D1. A first current I1 is measured. A third duty cycle is applied to third phase coil windings and a fourth duty cycle is applied to the second phase coil windings. The fourth duty cycle differs from the third duty cycle by a second difference value D2. A second current I2 is measured. Line-to-line resistances R1, R2 are calculated using the difference values D1, D2, the measured currents 11, I2, and a measured DC voltage VDC. After determining a resistance difference ?R between the line-to-line resistances R1, R2, a comparison to a first non-zero threshold T1 indicates a fault.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: October 8, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Bharath Kumar Suda, James David
  • SYSTEM, METHOD, AND APPARATUS FOR POWER DISTRIBUTION IN AN ELECTRIC MOBILE APPLICATION USING A COMBINED BREAKER AND RELAY
    Publication number: 20190296541
    Abstract: A mobile application includes a motive power circuit having a power storage device and an electrical load, where the power storage device and the electrical load are selectively electrically coupled through a power bus. The application includes a power distribution unit (PDU) electrically interposed between the power storage device and the electrical load, where the PDU includes a breaker/relay positioned on one of a high side and a low side of the power storage device. The breaker/relay includes a fixed contact and a moveable contact selectively electrically coupled to the fixed contact, where the moveable contact allows power flow through the power bus when electrically coupled to the fixed contact, and prevents power flow through the power bus when not electrically coupled to the fixed contact. The breaker/relay includes an armature coupled to the moveable contact, and capable to open or close the motive power circuit.
    Type: Application
    Filed: April 10, 2019
    Publication date: September 26, 2019
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock
  • POWER DISTRIBUTION UNIT AND FUSE MANAGEMENT FOR AN ELECTRIC MOBILE APPLICATION
    Publication number: 20190140245
    Abstract: A system include a vehicle having a motive electrical power path and a power distribution unit (PDU). The PDU includes a current protection circuit disposed in the motive electrical power path, the current protection circuit including a thermal fuse and a contactor in a series arrangement with the thermal fuse, and a high voltage power input coupling having a first electrical interface for a high voltage power source. The high voltage power output coupling includes a second electrical interface for a motive power load. The current protection circuit electrically couples the high voltage power input to the high voltage power output, and the current protection circuit is at least partially disposed in a laminated layer of the PDU. The laminated layer includes an electrically conductive flow path disposed between two electrically insulating layers.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 9, 2019
    Inventors: Martin Wayne Mensch, Brandon William Fisher, Robert Stephen Douglass, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Suda, Asheesh Soni
  • Method to reduce electromagnetic interference in switching circuit applications
    Patent number: 10243500
    Abstract: A method for providing electromagnetic compatibility to a motor control circuit is provided. A base pulse width modulated signal is selected to apply to a motor control circuit, and comprises a duty cycle for controlling an affiliated motor. Sensed system conditions are inputted for selecting a hopping frequency and a hopping amplitude of an electro magnetic compatibility management signal. The hopping frequency and the hopping amplitude are overlayed on to the base pulse width modulated signal to create a control pulse width modulated signal. The hopping frequency dithers the frequency of the control pulse width modulated signal. The hopping amplitude restricts the amplitude of the frequency dither.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 26, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: James David, Bharath Kumar Suda, Asheesh Soni
  • ELECTRICAL MOTOR COIL SHORT DETECTION AND PROTECTION
    Publication number: 20190074682
    Abstract: A fault detection method for a multi-phase motor system applies a first duty cycle to first phase coil windings and applies a second duty cycle to second phase coil windings. The second duty cycle differs from the first duty cycle by a first difference value D1. A first current I1 is measured. A third duty cycle is applied to third phase coil windings and a fourth duty cycle is applied to the second phase coil windings. The fourth duty cycle differs from the third duty cycle by a second difference value D2. A second current I2 is measured. Line-to-line resistances R1, R2 are calculated using the difference values D1, D2, the measured currents 11, I2, and a measured DC voltage VDC. After determining a resistance difference ?R between the line-to-line resistances R1, R2, a comparison to a first non-zero threshold T1 indicates a fault.
    Type: Application
    Filed: March 3, 2017
    Publication date: March 7, 2019
    Applicant: Eaton Intelligent Power Limited
    Inventors: BHARATH KUMAR SUDA, James DAVID
  • METHOD TO REDUCE ELECTROMAGNETIC INTERFERENCE IN SWITCHING CIRCUIT APPLICATIONS
    Publication number: 20180123499
    Abstract: A method for providing electromagnetic compatibility to a motor control circuit is provided. A base pulse width modulated signal is selected to apply to a motor control circuit, and comprises a duty cycle for controlling an affiliated motor. Sensed system conditions are inputted for selecting a hopping frequency and a hopping amplitude of an electro magnetic compatibility management signal. The hopping frequency and the hopping amplitude are overlayed on to the base pulse width modulated signal to create a control pulse width modulated signal. The hopping frequency dithers the frequency of the control pulse width modulated signal. The hopping amplitude restricts the amplitude of the frequency dither.
    Type: Application
    Filed: April 20, 2016
    Publication date: May 3, 2018
    Applicant: EATON CORPORATION
    Inventors: JAMES DAVID, Bharath Kumar Suda, Asheesh Soni