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公开(公告)号：US11569770B2
公开(公告)日：2023-01-31
申请号：US16029908
申请日：2018-07-09
Applicant: Ford Global Technologies, LLC
Inventor： Jiyao Wang , Wei Xu , Silong Li
Abstract: A system for controlling an electric machine of a vehicle includes, among other things, a controller module configured to attenuate noise from the electric machine by altering a corrective voltage in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise. A method of controlling noise associated with an electric machine of a vehicle includes, among other things, altering a corrective voltage to attenuate noise in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise.
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公开(公告)号：US11296644B2
公开(公告)日：2022-04-05
申请号：US16747418
申请日：2020-01-20
Applicant: Ford Global Technologies, LLC
Inventor： Xuemei Sun , Jiyao Wang , Hongjie Wu , William Reynolds , Silong Li , Michael W. Degner
IPC: H02P29/024 , H02M7/5387 , H02P27/08
Abstract: 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.
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公开(公告)号：US10910985B2
公开(公告)日：2021-02-02
申请号：US16207480
申请日：2018-12-03
Applicant: Ford Global Technologies, LLC
Inventor： Jiyao Wang , Wei Xu , Silong Li
Abstract: An electric drive system has a motor including a rotor, an inverter, and a controller. The controller perturbs a position of the rotor via a pulse width modulation (PWM) command to the inverter such that the motor receives an Id current that changes during the perturbing and an Iq current, and responsive to the Iq current settling at zero during the perturbing, alters the PWM command to cause the rotor to rotate.
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公开(公告)号：US10819197B1
公开(公告)日：2020-10-27
申请号：US16386017
申请日：2019-04-16
Applicant: Ford Global Technologies, LLC
Inventor： Silong Li , Jiyao Wang , Wei Xu
Abstract: A vehicle power system includes an electric machine, an inverter electrically connected with the electric machine, and a controller. The controller, while injecting AC voltage output by the inverter into the electric machine as a DC voltage input to the inverter changes, drives a duty ratio of the inverter toward a constant value to obtain resolver offset information associated with the electric machine from a current response of the electric machine to the AC voltage.
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Patent Agency Ranking
公开(公告)号：US20200336051A1
公开(公告)日：2020-10-22
申请号：US16386017
申请日：2019-04-16
Applicant: Ford Global Technologies, LLC
Inventor： Silong Li , Jiyao Wang , Wei Xu
Abstract: A vehicle power system includes an electric machine, an inverter electrically connected with the electric machine, and a controller. The controller, while injecting AC voltage output by the inverter into the electric machine as a DC voltage input to the inverter changes, drives a duty ratio of the inverter toward a constant value to obtain resolver offset information associated with the electric machine from a current response of the electric machine to the AC voltage.
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公开(公告)号：US20200177121A1
公开(公告)日：2020-06-04
申请号：US16207480
申请日：2018-12-03
Applicant: Ford Global Technologies, LLC
Inventor： Jiyao Wang , Wei Xu , Silong Li
Abstract: An electric drive system has a motor including a rotor, an inverter, and a controller. The controller perturbs a position of the rotor via a pulse width modulation (PWM) command to the inverter such that the motor receives an Id current that changes during the perturbing and an Iq current, and responsive to the Iq current settling at zero during the perturbing, alters the PWM command to cause the rotor to rotate.
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公开(公告)号：US20200014318A1
公开(公告)日：2020-01-09
申请号：US16029908
申请日：2018-07-09
Applicant: Ford Global Technologies, LLC
Inventor： Jiyao Wang , Wei Xu , Silong Li
Abstract: A system for controlling an electric machine of a vehicle includes, among other things, a controller module configured to attenuate noise from the electric machine by altering a corrective voltage in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise. A method of controlling noise associated with an electric machine of a vehicle includes, among other things, altering a corrective voltage to attenuate noise in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise.
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公开(公告)号：US10525843B1
公开(公告)日：2020-01-07
申请号：US16012136
申请日：2018-06-19
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Jiyao Wang , Wei Xu , Yinghan Xu , Silong Li
Abstract: An electric drive system for a vehicle includes an electric machine having first conductors arranged in slots of a stator to form phase windings and a second conductor arranged in the slots to form a secondary winding that produces a voltage indicative of a common mode voltage caused by voltages applied to the phase windings. The voltage can be used to supply power to electronic components and for diagnosis and control of the electric machine and an associated inverter.
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公开(公告)号：US20190296679A1
公开(公告)日：2019-09-26
申请号：US15927227
申请日：2018-03-21
Applicant: Ford Global Technologies, LLC
Inventor： Silong Li , Wei Xu , Jiyao Wang , Yinghan Xu
Abstract: In an electrified vehicle having a synchronous traction motor, an inverter is connected to stator windings by three power cables. If these cables are accidentally connected to the wrong windings, the resulting torque will not match the desired torque, and may even be in the wrong direction. To avoid this problem, a test is performed any time that the cables may have been unplugged and re-connected. The inverter is commanded to generate a rotating magnetic field while the rotor is held stationary, resulting in a positive and a negative response current. A relationship between a phase angle of the negative response current and the rotor position indicates which cables are connected to which windings. If the cables are incorrectly connected, the controller disables the motor and informs an operator which cables to swap to achieve correct connection.
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