Patents by Inventor Xuemei SUN
Xuemei SUN 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: 20230398879Abstract: An automotive control system includes a controller for use with an inverter configured to drive a traction motor with electrical energy from a traction battery. The controller is programmed to select a base switching frequency for a control signal for the inverter such that a switching noise sideband frequency of the inverter is the same as a harmonic frequency of the traction motor, modify the selected base switching frequency by a random switching frequency to obtain a modified switching frequency, and control the inverter with the control signal having the modified switching frequency for the inverter to drive the traction motor.Type: ApplicationFiled: June 14, 2022Publication date: December 14, 2023Applicant: Ford Global Technologies, LLCInventors: Xuemei Sun, Donald Albert Bradley
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Patent number: 11557999Abstract: A control method includes sequentially updating a next cycle pulse width modulation command for each of an upper switch and lower switch of a phase leg of a power converter according to an order defined by timing of a rising edge of the next cycle pulse width command for one of the switches relative to a rising edge of a previous cycle pulse width command for the one of the switches.Type: GrantFiled: January 14, 2021Date of Patent: January 17, 2023Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, Jiyao Wang
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Publication number: 20220224272Abstract: A control method includes sequentially updating a next cycle pulse width modulation command for each of an upper switch and lower switch of a phase leg of a power converter according to an order defined by timing of a rising edge of the next cycle pulse width command for one of the switches relative to a rising edge of a previous cycle pulse width command for the one of the switches.Type: ApplicationFiled: January 14, 2021Publication date: July 14, 2022Inventors: Xuemei Sun, Jiyao Wang
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Publication number: 20220158572Abstract: An electrified vehicle includes a traction battery, an inverter coupled to the traction battery and operable to convert direct current (DC) power from the traction battery to three-phase alternating current (AC) power, a three-phase electric machine coupled to the inverter by associated cables, a sensor configured to generate a signal associated with rotational position of a rotor of the three-phase electric machine, a current sensor associated with each cable/phase of the three-phase electric machine, and a controller programmed to generate non-zero phase current at each of a plurality of predetermined regularly spaced rotational positions by either adjusting rotor angle or injecting q-axis current, command the inverter to inject a test current pulse to the electric machine, and generate a diagnostic signal in response to any one of the current sensor signals being less than an associated threshold to detect a cable or current sensor anomaly in a single phase.Type: ApplicationFiled: November 18, 2020Publication date: May 19, 2022Applicant: Ford Global Technologies, LLCInventors: Xuemei SUN, Papiya BAGCHI, Rimma PARANSKY, Anish DASARI, Vishal SRIVASTAVA
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Patent number: 11296644Abstract: A vehicle includes a traction battery, an inverter, and a controller. The inverter includes a plurality of pairs of switches. Each of the pairs includes an upper switch that is directly electrically connected with a positive terminal of the traction battery and a lower switch that is directly electrically connected with a negative terminal of the traction battery. The controller, responsive to presence of a fault condition and during each of consecutive switching periods, deactivates all of the switches for a predetermined portion of the switching period, activates only the upper switches for another predetermined portion of the switching period, deactivates all of the switches for yet another predetermined portion of the switching period, and activates only the lower switches for still yet another predetermined portion of the switching period.Type: GrantFiled: January 20, 2020Date of Patent: April 5, 2022Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, Jiyao Wang, Hongjie Wu, William Reynolds, Silong Li, Michael W. Degner
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Patent number: 11285835Abstract: A system and method are disclosed for charging a depleted battery within a first hybrid vehicle when connected to a second hybrid vehicle using a junction box. The system may include a wire harness having high voltage interlock connectors (HVIL) and high voltage (HV) connectors that connected to both the first vehicle and second vehicle. The system may also include one or more controllers that engage the charged battery to start a first engine within the first vehicle or, alternatively, a second engine within the second vehicle. After the first engine or second engine is started, the charged battery will be disconnected and the depleted battery may be connected using a set of HV contactors. The first engine or the second engine may then be operated to charge the depleted battery. Charging may stop when the depleted battery is charged within a specified SoC range.Type: GrantFiled: November 12, 2019Date of Patent: March 29, 2022Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, John Paul Gibeau, William David Treharne
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Publication number: 20210226570Abstract: A vehicle includes a traction battery, an inverter, and a controller. The inverter includes a plurality of pairs of switches. Each of the pairs includes an upper switch that is directly electrically connected with a positive terminal of the traction battery and a lower switch that is directly electrically connected with a negative terminal of the traction battery. The controller, responsive to presence of a fault condition and during each of consecutive switching periods, deactivates all of the switches for a predetermined portion of the switching period, activates only the upper switches for another predetermined portion of the switching period, deactivates all of the switches for yet another predetermined portion of the switching period, and activates only the lower switches for still yet another predetermined portion of the switching period.Type: ApplicationFiled: January 20, 2020Publication date: July 22, 2021Inventors: Xuemei SUN, Jiyao WANG, Hongjie WU, William REYNOLDS, Silong LI, Michael W. DEGNER
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Publication number: 20210138922Abstract: A system and method are disclosed for charging a depleted battery within a first hybrid vehicle when connected to a second hybrid vehicle using a junction box. The system may include a wire harness having high voltage interlock connectors (HVIL) and high voltage (HV) connectors that connected to both the first vehicle and second vehicle. The system may also include one or more controllers that engage the charged battery to start a first engine within the first vehicle or, alternatively, a second engine within the second vehicle. After the first engine or second engine is started, the charged battery will be disconnected and the depleted battery may be connected using a set of HV contactors. The first engine or the second engine may then be operated to charge the depleted battery. Charging may stop when the depleted battery is charged within a specified SoC range.Type: ApplicationFiled: November 12, 2019Publication date: May 13, 2021Inventors: Xuemei SUN, John Paul GIBEAU, William David TREHARNE
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Patent number: 10814737Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.Type: GrantFiled: September 22, 2017Date of Patent: October 27, 2020Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, William David Treharne, Jonathan Andrew Butcher, Robert John Link, Philip Michael Gonzales
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Patent number: 10538169Abstract: A vehicle includes a traction motor having resonance frequency zones, an inverter including switches arranged to drive the traction motor, and a controller. The controller operates the switches only within specified sets of carrier frequencies such that noise side bands corresponding to the carrier frequencies fall outside the resonance frequency zones.Type: GrantFiled: June 4, 2018Date of Patent: January 21, 2020Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, Jami J. Miller, Christopher Wolf, Liqun Na
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Publication number: 20190366854Abstract: A vehicle includes a traction motor having resonance frequency zones, an inverter including switches arranged to drive the traction motor, and a controller. The controller operates the switches only within specified sets of carrier frequencies such that noise side hands corresponding to the carrier frequencies fall outside the resonance frequency zones.Type: ApplicationFiled: June 4, 2018Publication date: December 5, 2019Inventors: Xuemei Sun, Jami J. Miller, Christopher Wolf, Liqun Na
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Patent number: 10148209Abstract: A method, implemented in one or more controllers in a vehicle, includes, in a presence of a propulsive demand of the vehicle that is driven by an engine and an electric machine, holding electric machine current at a predetermined magnitude and sweeping an angle, defined between a reference current and a reference Iq component, through a predetermined range. The method further includes operating the electric machine thereafter according to a resolver offset derived from a value of the angle corresponding to an Iq component crossing zero.Type: GrantFiled: March 1, 2017Date of Patent: December 4, 2018Assignee: Ford Global Technologies, LLCInventors: William David Treharne, Jonathan Andrew Butcher, Xuemei Sun
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Patent number: 10114058Abstract: A vehicle includes a traction battery capable of being selectively coupled to a voltage bus. An inverter selectively couples the voltage bus to an electric machine. A leakage detection circuit including a switching element is connected between the voltage bus and a vehicle chassis. When the traction battery is coupled to the voltage bus and the switching element of the leakage detection circuit is closed, a leakage path in the electric machine may be checked by controlling the inverter to couple terminals of the electric machine to a common conductor of the voltage bus. A leakage path is detected when a leakage resistance associated with the leakage path is less than a predetermined resistance. The leakage resistance is ascertained by measuring a voltage within the leakage detection circuit. A location of the leakage path may be determined based on which components are coupled to the voltage bus.Type: GrantFiled: September 30, 2014Date of Patent: October 30, 2018Assignee: Ford Global Technologies, LLCInventor: Xuemei Sun
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Patent number: 10081261Abstract: A vehicle charging system includes a charger configured to receive power form an external power source and a connector. The connector is configured to receive power from the charger and transmit the received power to a vehicle via a high-voltage cable. The cable is configured to connect the connector to a vehicle battery. Each of the charger and the connector includes a high voltage interlock loop (HVIL) configured to cause the charger to cease power transfer upon recognizing a predetermined voltage difference at a pair of ports of the HVIL.Type: GrantFiled: October 1, 2014Date of Patent: September 25, 2018Assignee: Ford Global Technologies, LLCInventors: Jeffery R. Grimes, Benjamin A. Tabatowski-Bush, William David Treharne, Jonathan Andrew Butcher, Robert John Link, Xuemei Sun
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Publication number: 20180251119Abstract: A method, implemented in one or more controllers in a vehicle, includes, in a presence of a propulsive demand of the vehicle that is driven by an engine and an electric machine, holding electric machine current at a predetermined magnitude and sweeping an angle, defined between a reference current and a reference Iq component, through a predetermined range. The method further includes operating the electric machine thereafter according to a resolver offset derived from a value of the angle corresponding to an Iq component crossing zero.Type: ApplicationFiled: March 1, 2017Publication date: September 6, 2018Inventors: William David TREHARNE, Jonathan Andrew BUTCHER, Xuemei SUN
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Publication number: 20180009322Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.Type: ApplicationFiled: September 22, 2017Publication date: January 11, 2018Inventors: Xuemei SUN, William David TREHARNE, Jonathan Andrew BUTCHER, Robert John LINK, Philip Michael GONZALES
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Patent number: 9802495Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.Type: GrantFiled: August 22, 2014Date of Patent: October 31, 2017Assignee: Ford Global Technologies, LLCInventors: Xuemei Sun, William David Treharne, Jonathan Andrew Butcher, Robert John Link, Philip Michael Gonzales
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Publication number: 20160096438Abstract: A vehicle charging system includes a charger configured to receive power form an external power source and a connector. The connector is configured to receive power from the charger and transmit the received power to a vehicle via a high-voltage cable. The cable is configured to connect the connector to a vehicle battery. Each of the charger and the connector includes a high voltage interlock loop (HVIL) configured to cause the charger to cease power transfer upon recognizing a predetermined voltage difference at a pair of ports of the HVIL.Type: ApplicationFiled: October 1, 2014Publication date: April 7, 2016Inventors: Jeffery R. GRIMES, Benjamin A. TABATOWSKI-BUSH, William David TREHARNE, Jonathan Andrew BUTCHER, Robert John LINK, Xuemei SUN
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Publication number: 20160091551Abstract: A vehicle includes a traction battery capable of being selectively coupled to a voltage bus. An inverter selectively couples the voltage bus to an electric machine. A leakage detection circuit including a switching element is connected between the voltage bus and a vehicle chassis. When the traction battery is coupled to the voltage bus and the switching element of the leakage detection circuit is closed, a leakage path in the electric machine may be checked by controlling the inverter to couple terminals of the electric machine to a common conductor of the voltage bus. A leakage path is detected when a leakage resistance associated with the leakage path is less than a predetermined resistance. The leakage resistance is ascertained by measuring a voltage within the leakage detection circuit. A location of the leakage path may be determined based on which components are coupled to the voltage bus.Type: ApplicationFiled: September 30, 2014Publication date: March 31, 2016Inventor: Xuemei Sun
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Publication number: 20160052409Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.Type: ApplicationFiled: August 22, 2014Publication date: February 25, 2016Inventors: Xuemei SUN, William David TREHARNE, Jonathan Andrew BUTCHER, Robert John LINK, Philip Michael GONZALES