公开(公告)号：US09834206B1

公开(公告)日：2017-12-05

申请号：US15472718

申请日：2017-03-29

Applicant: Ford Global Technologies, LLC

Inventor： Shuitao Yang ,  Yan Zhou ,  Kevin L. Newman ,  Lihua Chen ,  Fan Xu ,  Mohammed Khorshed Alam

IPC: B60W20/50 ,  B60W10/06 ,  B60W10/08 ,  B60L11/18 ,  B60K1/04 ,  B60W10/115 ,  H02M7/5387 ,  H02P27/06 ,  B60L11/08 ,  B60L7/14 ,  B60K6/28 ,  B60K6/365

CPC classification number: B60W20/50 ,  B60K1/04 ,  B60K6/28 ,  B60K6/34 ,  B60K6/365 ,  B60K6/445 ,  B60L7/14 ,  B60L11/08 ,  B60L11/1803 ,  B60L11/1861 ,  B60L11/1864 ,  B60L2210/42 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/547 ,  B60W10/06 ,  B60W10/08 ,  B60W10/115 ,  B60W10/26 ,  B60W2510/0638 ,  B60W2510/083 ,  B60W2510/244 ,  B60W2710/0644 ,  B60W2710/0666 ,  B60W2710/083 ,  B60W2710/244 ,  B60Y2200/92 ,  H02M7/5387 ,  H02M7/53875 ,  H02M2001/007 ,  H02M2001/008 ,  H02M2001/325 ,  H02P27/06 ,  Y10S903/907 ,  Y10S903/91 ,  Y10S903/93

Abstract: A hybrid drive system has a battery and a combustion engine for energy sources. The system has a traction motor, a generator, a variable voltage converter (VVC), a motor inverter, a generator inverter, a bus coupling the VVC to the inverters, and a controller. The controller regulates engine speed, motor torque, and generator torque. The engine speed is determined according to a driver torque demand. In normal conditions, 1) the controller regulates the engine speed by modifying a generator torque command, and 2) the bus voltage is regulated using the VVC and battery. When the controller detects a fault in which the battery and VVC become unavailable for regulating the bus voltage, then the controller regulates a motor inverter power output to match a sum of a generator inverter power output and an estimated power loss of the inverters in order to regulate the bus voltage.

公开(公告)号：US20170334294A1

公开(公告)日：2017-11-23

申请号：US15159051

申请日：2016-05-19

Applicant: Ford Global Technologies, LLC

Inventor： Lihua Chen ,  Yan Zhou ,  Shuitao Yang

IPC: B60L3/00 ,  H02P27/08 ,  H02P29/028 ,  H02M7/5387

CPC classification number: B60L3/0061 ,  B60L3/04 ,  B60L11/1803 ,  B60L15/025 ,  B60L15/08 ,  B60L2210/40 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  H02M7/53875 ,  H02P27/08 ,  H02P29/028 ,  H02P29/032

Abstract: A vehicle power system includes a controller configured to issue commands to open a selected set of switches of an inverter and then to operate the selected set of switches according to a pulse width modulation signal having an increasing duty cycle such that input current to a battery is driven towards zero and a magnitude of d-axis current of the drive system is reduced in response to a fault with an electric drive system.

公开(公告)号：US10967743B2

公开(公告)日：2021-04-06

申请号：US15437714

申请日：2017-02-21

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen ,  Yan Zhou ,  Shuitao Yang ,  Fan Xu

IPC: B60L50/15 ,  B60L50/16 ,  B60L15/00 ,  B60L50/61 ,  H02P27/06 ,  H02P27/08

Abstract: A powertrain for a vehicle includes an electric machine coupled with a first inverter, a traction battery and a second inverter. The traction battery is coupled between a neutral terminal of the electric machine and a negative terminal of the first inverter. The second inverter is coupled in parallel with the first inverter with respect to a direct current (DC) bus, and configured to drive a second electric machine.

公开(公告)号：US10576828B2

公开(公告)日：2020-03-03

申请号：US15404393

申请日：2017-01-12

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Jogendra S. Thongam ,  Shuitao Yang ,  Mohammed Khorshed Alam ,  Lihua Chen ,  Fan Xu ,  Yan Zhou

IPC: B60L11/18 ,  B60L7/14 ,  B60L53/24 ,  H02M3/158

Abstract: A variable voltage converter for an electric drive system has upper and lower switching devices in series between positive and negative buses. An inductance couples a junction between the switching devices to a DC battery. A controller is configured to drive the switches according to PWM gate signals based on an expected boost ratio of the converter. The PWM gate signals have a nominal dead-time insertion for both the upper and lower switching devices when the expected boost ratio is greater than a predetermined boost ratio. In order to extend a range of achievable boost ratios during regeneration operation, the PWM gate signals are without dead-time insertion for the upper switching device and the lower switching device remains continuously off when the expected boost ratio is less than the predetermined boost ratio.

公开(公告)号：US10389352B1

公开(公告)日：2019-08-20

申请号：US15904381

申请日：2018-02-25

Applicant: Ford Global Technologies, LLC

Inventor： Fan Xu ,  Lihua Chen ,  Baoming Ge ,  Yan Zhou ,  Shuitao Yang

IPC: H02P1/00 ,  H03K17/16 ,  H02M1/08 ,  H02P27/06 ,  B60L11/18

Abstract: A power electronics module is arranged to pass power between a traction battery and electric machine, and includes a pair of parallel power transistors and a differential mode choke arranged to, responsive to current flow through the choke, drive gate voltages of the power transistors apart to reduce differences in current magnitudes output by the transistors.

公开(公告)号：US10320220B2

公开(公告)日：2019-06-11

申请号：US15684657

申请日：2017-08-23

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen ,  Shuitao Yang ,  Yan Zhou ,  Fan Xu ,  Mohammed Khorshed Alam

IPC: H02P25/18 ,  H02J7/02 ,  B60L11/18 ,  H02K3/28 ,  H02J7/00

Abstract: A powertrain for a vehicle includes an electric machine and a controller. The electric machine has electrically isolated windings and is coupled with an inverter. The controller may be programmed to configure respective terminals of the windings to form a Y-connection, and responsive to an electrical connection between the vehicle and a 3-phase power grid, reconfigure the respective terminals such that each is coupled to a respective phase of the 3-phase power grid.

公开(公告)号：US20180236877A1

公开(公告)日：2018-08-23

申请号：US15437714

申请日：2017-02-21

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen ,  Yan Zhou ,  Shuitao Yang ,  Fan Xu

IPC: B60L11/12 ,  H02P27/06

CPC classification number: B60L50/15 ,  B60L15/007 ,  B60L50/16 ,  B60L50/61 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2220/50 ,  H02P27/06 ,  H02P27/08 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7022 ,  Y02T10/7077 ,  Y02T10/7241

Abstract: A powertrain for a vehicle includes an electric machine coupled with a first inverter, a traction battery and a second inverter. The traction battery is coupled between a neutral terminal of the electric machine and a negative terminal of the first inverter. The second inverter is coupled in parallel with the first inverter with respect to a direct current (DC) bus, and configured to drive a second electric machine.

公开(公告)号：US20180219546A1

公开(公告)日：2018-08-02

申请号：US15420827

申请日：2017-01-31

Applicant: Ford Global Technologies, LLC

Inventor： Shuitao Yang ,  Fan Xu ,  Yan Zhou ,  Lihua Chen ,  Mohammed Khorshed Alam

IPC: H03K17/16 ,  H02M7/5395 ,  H02M1/088 ,  H02P27/08 ,  B60L11/18 ,  B60L15/02

CPC classification number: H03K17/166 ,  B60L11/1803 ,  B60L15/02 ,  B60L2210/14 ,  H02M1/08 ,  H02M1/088 ,  H02M3/155 ,  H02M7/483 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0058 ,  H02M2001/007 ,  H02P27/08 ,  H02P2201/07 ,  H02P2201/09 ,  H02P2201/11 ,  H03K17/0822 ,  H03K17/165 ,  H03K17/168 ,  H03K2217/009 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7225 ,  Y02T10/92

Abstract: A gate driver of a power device includes a power supply and a resonant circuit. The power supply may have a positive potential and a negative potential. The resonant circuit may include an inductor and be configured to recirculate charge during turn-off by inducing a first field based on a positive charge from a gate caused by the positive potential, and in response to reversal of a voltage across the inductor, collapsing the first field to draw charge from the gate.

公开(公告)号：US20180194234A1

公开(公告)日：2018-07-12

申请号：US15404537

申请日：2017-01-12

Applicant: Ford Global Technologies, LLC

Inventor： Fan Xu ,  Shuitao Yang ,  Yan Zhou ,  Mohammed Khorshed Alam ,  Lihua Chen

IPC: B60L11/08 ,  H02P9/00 ,  H02P6/14 ,  H02P27/08 ,  B60L11/18 ,  H02J7/14

CPC classification number: B60L11/08 ,  B60L11/12 ,  B60L11/1803 ,  B60L11/1811 ,  B60L15/08 ,  B60L15/2045 ,  B60L2210/10 ,  B60L2210/14 ,  B60L2210/40 ,  B60L2240/526 ,  B60L2240/80 ,  H02J7/1423 ,  H02J2007/143 ,  H02P27/08 ,  H02P27/085 ,  Y02T10/7005 ,  Y02T10/7022

Abstract: A vehicle power system may include a gate driver configured to drive a traction gate and a generator gate corresponding to switches of a variable voltage controller such that the gates have alternating pulse width modulation ON periods. The gates may be driven in response to a throughput magnitude falling below a threshold. The gate driver may be further configured to drive the gates such that a duty cycle of one of the gates is zero in response to the throughput exceeding the threshold.

公开(公告)号：US20180154784A1

公开(公告)日：2018-06-07

申请号：US15366226

申请日：2016-12-01

Applicant: Ford Global Technologies, LLC

Inventor： Fan Xu ,  Shuitao Yang ,  Yan Zhou ,  Lihua Chen ,  Mohammed Khorshed Alam

IPC: B60L11/18 ,  H02M3/158 ,  H02M7/537

CPC classification number: B60L11/1812 ,  B60L11/1816 ,  B60L2210/10 ,  B60L2210/40 ,  H02M1/08 ,  H02M1/15 ,  H02M3/158 ,  H02M7/537 ,  H02M7/53871 ,  H02M2001/0054 ,  H02M2001/327 ,  H02M2001/342 ,  H03K17/166

Abstract: A vehicle powertrain includes a switch configured to provide a drive current to an electric machine and coupled with a diode array and a gate driver. The gate driver may be configured to, in response to a voltage across the array exceeding a threshold while providing the drive current in a presence of a turn-off request, confine operation of a resistive switch to a linear region to decrease a rate of change of the drive current proportional to the voltage.