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公开(公告)号：US09853589B2
公开(公告)日：2017-12-26
申请号：US15059941
申请日：2016-03-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Constantin C. Stancu , Brian A. Welchko
CPC classification number: H02P27/08 , B60L11/1803 , B60L15/02 , B60L2210/10 , B60L2210/40 , B60L2240/429 , B60L2240/529 , B60W10/08 , B60W20/00 , H02P6/14 , H02P6/15 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7077 , Y02T10/7241
Abstract: An electric power system including a front-end converter that is supplied electric power from a high-voltage DC power source, and an associated motor control system is described. A control method includes monitoring the electric machine and determining a reference current based upon the electric power supplied from the high-voltage DC power source. A motor current is determined based upon the monitoring of the electric machine, and a feed-forward current is determined based upon the motor current and the monitoring of the electric machine. A first duty cycle is determined based upon the reference current, the motor current and the feed-forward current, and a feed-forward duty cycle is determined based upon the monitoring of the electric machine. A second duty cycle is determined based upon the feed-forward duty cycle and the first duty cycle, and the front-end converter is controlled based upon the second duty cycle.
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公开(公告)号：US20170302215A1
公开(公告)日：2017-10-19
申请号：US15130333
申请日：2016-04-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Brian A. Welchko , Constantin C. Stancu
IPC: H02P29/024 , H02P27/08 , H02P6/182
CPC classification number: H02P29/024 , H02P6/182 , H02P27/085
Abstract: An electric power system for supplying power to a permanent magnet electric machine includes a high-voltage DC power source that is disposed to supply electric power to a front-end converter connected via a high-voltage DC bus to an electric inverter that is connected to the electric machine. A method for operating a control system includes monitoring the electric machine. Upon detecting a fault associated with the electric machine, a controller commands operation of the front-end converter to generate a voltage level on the high-voltage DC bus that is a maximum setpoint voltage level and monitors back-emf voltage level from the electric machine. The inverter is controlled to a three-phase open state when the back-emf voltage level is less than the maximum setpoint voltage level. The inverter is controlled to a three-phase short state when the back-emf voltage level is greater than the maximum setpoint voltage level.
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3.发明授权公开(公告)号：US11316391B2
公开(公告)日：2022-04-26
申请号：US16806354
申请日：2020-03-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Bojian Cao , Brent S. Gagas
Abstract: A method for controlling transient operation of a rotary electric machine in an electric powertrain or other electrical system includes, during a shunt angle transition occurring during a maximum torque per ampere (MTPA) control region, determining an estimated output torque of the electric machine via a torque estimation block using d-axis and q-axis current commands and an additional value, i.e., an actual shunt angle or a machine temperature. The method includes subtracting the estimated output torque from a commanded output torque to derive an adjusted commanded torque value or torque error, and calculating, from the torque error, a delta d-axis current command and a delta q-axis current command. The method includes adjusting d-axis and q-axis current commands using the delta commands to produce adjusted d-axis and q-axis current commands, which are then used as closed-loop feedback control terms by the torque estimation block.
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公开(公告)号：US20170257049A1
公开(公告)日：2017-09-07
申请号：US15059941
申请日：2016-03-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Constantin C. Stancu , Brian A. Welchko
CPC classification number: H02P27/08 , B60L11/1803 , B60L15/02 , B60L2210/10 , B60L2210/40 , B60L2240/429 , B60L2240/529 , B60W10/08 , B60W20/00 , H02P6/14 , H02P6/15 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7077 , Y02T10/7241
Abstract: An electric power system including a front-end converter that is supplied electric power from a high-voltage DC power source, and an associated motor control system is described. A control method includes monitoring the electric machine and determining a reference current based upon the electric power supplied from the high-voltage DC power source. A motor current is determined based upon the monitoring of the electric machine, and a feed-forward current is determined based upon the motor current and the monitoring of the electric machine. A first duty cycle is determined based upon the reference current, the motor current and the feed-forward current, and a feed-forward duty cycle is determined based upon the monitoring of the electric machine. A second duty cycle is determined based upon the feed-forward duty cycle and the first duty cycle, and the front-end converter is controlled based upon the second duty cycle.
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公开(公告)号：US20220089034A1
公开(公告)日：2022-03-24
申请号：US17031052
申请日：2020-09-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Bojian Cao , Brent S. Gagas
IPC: B60L15/02 , B60W30/188
Abstract: A method for controlling transient operation of a variable flux machine (VFM) includes, during a shunt angle transition, receiving a commanded and measured shunt angle when operating in a predetermined operating region, e.g., maximum torque per ampere or field weakening. The method includes calculating d-axis and q-axis delta current terms (ΔId and ΔIq) required to maintain an output torque level of the VFM through a duration of the shunt angle transition, then applying the required ΔId and ΔId terms as feed-forward terms to adjust a d-axis current (Id) term and a q-axis current (Iq) term from a respective lookup table. In this manner the controller maintains the output torque level of the VFM during the shunt angle transition. An electric powertrain includes the VFM, a TPIM, and the controller. A PM machine may be controlled by substituting temperature for shunt angle.
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Patent Agency Ranking
公开(公告)号：US09774288B1
公开(公告)日：2017-09-26
申请号：US15225941
申请日：2016-08-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Brian A. Welchko , Constantin C. Stancu
Abstract: An electric machine assembly includes an electric machine, an inverter configured to provide pulse-width modulation characterized by a switching frequency and a controller. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the switching frequency to minimize a beat frequency phenomenon. Execution of the instructions by the processor causes the controller to obtain a first function (G1) and a second function (G2) based at least partially on the original pulse ratio (PR0). The original pulse ratio (PR0) is a ratio of the switching frequency and a predefined fundamental frequency. If each of a plurality of conditions are met, a new pulse ratio (PRN) is determined based at least partially on the original pulse ratio (PR0), the first function (G1) and the second function (G2).
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公开(公告)号：US11926221B2
公开(公告)日：2024-03-12
申请号：US17031052
申请日：2020-09-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Bojian Cao , Brent S. Gagas
IPC: H02P25/10 , B60L15/02 , B60W30/188 , H02P21/20
CPC classification number: B60L15/025 , B60W30/188 , H02P21/20 , B60L2240/423 , B60L2240/429 , B60W2510/083 , B60W2510/085 , B60W2520/40
Abstract: A method for controlling transient operation of a variable flux machine (VFM) includes, during a shunt angle transition, receiving a commanded and measured shunt angle when operating in a predetermined operating region, e.g., maximum torque per ampere or field weakening. The method includes calculating d-axis and q-axis delta current terms (ΔId and ΔIq) required to maintain an output torque level of the VFM through a duration of the shunt angle transition, then applying the required ΔId and ΔId terms as feed-forward terms to adjust a d-axis current (Id) term and a q-axis current (Iq) term from a respective lookup table. In this manner the controller maintains the output torque level of the VFM during the shunt angle transition. An electric powertrain includes the VFM, a TPIM, and the controller. A PM machine may be controlled by substituting temperature for shunt angle.
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公开(公告)号：US10164563B2
公开(公告)日：2018-12-25
申请号：US15130333
申请日：2016-04-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Brian A. Welchko , Constantin C. Stancu
IPC: H02H7/09 , H02P29/024 , H02P6/182 , H02P27/08
Abstract: An electric power system for supplying power to a permanent magnet electric machine includes a high-voltage DC power source that is disposed to supply electric power to a front-end converter connected via a high-voltage DC bus to an electric inverter that is connected to the electric machine. A method for operating a control system includes monitoring the electric machine. Upon detecting a fault associated with the electric machine, a controller commands operation of the front-end converter to generate a voltage level on the high-voltage DC bus that is a maximum setpoint voltage level and monitors back-emf voltage level from the electric machine. The inverter is controlled to a three-phase open state when the back-emf voltage level is less than the maximum setpoint voltage level. The inverter is controlled to a three-phase short state when the back-emf voltage level is greater than the maximum setpoint voltage level.
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9.发明申请公开(公告)号：US20210273505A1
公开(公告)日：2021-09-02
申请号：US16806354
申请日：2020-03-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Bojian Cao , Brent S. Gagas
Abstract: A method for controlling transient operation of a rotary electric machine in an electric powertrain or other electrical system includes, during a shunt angle transition occurring during a maximum torque per ampere (MTPA) control region, determining an estimated output torque of the electric machine via a torque estimation block using d-axis and q-axis current commands and an additional value, i.e., an actual shunt angle or a machine temperature. The method includes subtracting the estimated output torque from a commanded output torque to derive an adjusted commanded torque value or torque error, and calculating, from the torque error, a delta d-axis current command and a delta q-axis current command. The method includes adjusting d-axis and q-axis current commands using the delta commands to produce adjusted d-axis and q-axis current commands, which are then used as closed-loop feedback control terms by the torque estimation block.
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公开(公告)号：US10171021B2
公开(公告)日：2019-01-01
申请号：US15479170
申请日：2017-04-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xin Jing , Brian A. Welchko , Constantin C. Stancu
Abstract: Methods may involve determining a minimum voltage for a voltage command. A maximum voltage for the voltage command may be determined. A first representation of a first performance curve corresponding to the minimum voltage may be determined. A second representation of a second performance curve corresponding to the maximum voltage may be determined. An operating point to be achieved through the voltage command may be obtained. An evaluation may be made of whether the operating point lies between the first and second representations. When the operating point lies between the first and second representations, an interpolation may be conducted between the first and second representations to determine a magnitude of the voltage command.
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