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公开(公告)号：US20230081528A1
公开(公告)日：2023-03-16
申请号：US18049319
申请日：2022-10-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US20210309112A1
公开(公告)日：2021-10-07
申请号：US17352436
申请日：2021-06-21
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US10696163B2
公开(公告)日：2020-06-30
申请号：US16366263
申请日：2019-03-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
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公开(公告)号：US20250058641A1
公开(公告)日：2025-02-20
申请号：US18937212
申请日：2024-11-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US20200276902A1
公开(公告)日：2020-09-03
申请号：US16877828
申请日：2020-05-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
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Patent Agency Ranking
公开(公告)号：US20170341518A1
公开(公告)日：2017-11-30
申请号：US15680261
申请日：2017-08-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
CPC classification number: B60L7/14 , B60L7/18 , B60L7/26 , B60L11/1803 , B60L15/2009 , B60L2220/12 , B60L2240/421 , B60L2240/423 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/72 , Y02T10/7275
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
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公开(公告)号：US11040625B2
公开(公告)日：2021-06-22
申请号：US14938602
申请日：2015-11-11
Applicant: Texas Instruments Incorporated
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve an braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US20170129340A1
公开(公告)日：2017-05-11
申请号：US14938602
申请日：2015-11-11
Applicant: Texas Instruments Incorporated
Inventor： Aravind Samba Murthy , David Patrick Magee
CPC classification number: B60L7/14 , B60L7/18 , B60L15/025 , B60L15/2009 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , H02P3/16 , H02P21/22 , H02P21/36 , H02P27/08 , Y02T10/643 , Y02T10/646 , Y02T10/72 , Y02T10/7275
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve an braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US12168401B2
公开(公告)日：2024-12-17
申请号：US18049319
申请日：2022-10-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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公开(公告)号：US11479124B2
公开(公告)日：2022-10-25
申请号：US17352436
申请日：2021-06-21
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
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