公开(公告)号：US11616457B2

公开(公告)日：2023-03-28

申请号：US17496226

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Nakul Shah ,  Prerit Pramod ,  Krishna MPK Namburi

IPC: H02P6/08 ,  H02P27/08 ,  H02P25/022

Abstract: A method of controlling operation of an electric machine includes: determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; determining a motor current-based torque limit based on a motor current limit; determining a final torque limit based on the voltage-based torque limit and the motor current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; determining an initial current command corresponding to the inverter satisfying a regenerative current limit of the DC bus; and calculating a final current command based on, at least, the limited command torque and the initial current command. The method includes the final current command exceeding the initial current command to cause the electric machine to produce a torque corresponding to the limited torque command.

公开(公告)号：US11884341B2

公开(公告)日：2024-01-30

申请号：US17496206

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Prerit Pramod ,  Krishna M P K Namburi ,  Nakul Shah

IPC: B62D5/04

CPC classification number: B62D5/0463 ,  B62D5/0409

Abstract: A method of controlling operation of an electric machine includes: calculating a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; calculating a current-based torque limit based on a motor current limit; determining a final torque limit based on the voltage-based torque limit and the current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; and generating at least one current command based on, at least, the limited command torque. A control system for controlling operation of an electric machine is also provided.

公开(公告)号：US11938918B2

公开(公告)日：2024-03-26

申请号：US17496241

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Nakul Shah ,  Prerit Pramod ,  Krishna MPK Namburi

IPC: B60W10/08 ,  B60L15/20

CPC classification number: B60W10/08 ,  B60L15/20 ,  B60L2240/423 ,  B60W2710/083

Abstract: A method of controlling operation of an electric machine includes: determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; determining a motor current-based torque limit based on a motor current limit; determining a supply current-based torque limit based on a supply rating, to supply current to the inverter, of the DC bus; determining a regenerative current-based torque limit based on a receive rating, to receive current from the inverter, of the DC bus; determining a final torque limit based on the voltage-based torque limit, the motor current-based torque limit, the supply current-based torque limit, and the regenerative current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; and calculating at least one current command based on, at least, the limited command torque.

公开(公告)号：US20220105978A1

公开(公告)日：2022-04-07

申请号：US17496206

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Prerit Pramod ,  Krishna MPK Namburi ,  Nakul Shah

IPC: B62D5/04

Abstract: A method of controlling operation of an electric machine includes: calculating a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; calculating a current-based torque limit based on a motor current limit; determining a final torque limit based on the voltage-based torque limit and the current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; and generating at least one current command based on, at least, the limited command torque. A control system for controlling operation of an electric machine is also provided.

公开(公告)号：US20220109386A1

公开(公告)日：2022-04-07

申请号：US17496226

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Nakul Shah ,  Prerit Pramod ,  Krishna MPK Namburi

IPC: H02P6/08 ,  H02P25/022 ,  H02P27/08

Abstract: A method of controlling operation of an electric machine includes: determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; determining a motor current-based torque limit based on a motor current limit; determining a final torque limit based on the voltage-based torque limit and the motor current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; determining an initial current command corresponding to the inverter satisfying a regenerative current limit of the DC bus; and calculating a final current command based on, at least, the limited command torque and the initial current command. The method includes the final current command exceeding the initial current command to cause the electric machine to produce a torque corresponding to the limited torque command.

公开(公告)号：US20220105923A1

公开(公告)日：2022-04-07

申请号：US17496241

申请日：2021-10-07

Applicant: Steering Solutions IP Holding Corporation

Inventor： Nakul Shah ,  Prerit Pramod ,  Krishna MPK Namburi

IPC: B60W10/08 ,  B60L15/20

Abstract: A method of controlling operation of an electric machine includes: determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; determining a motor current-based torque limit based on a motor current limit; determining a supply current-based torque limit based on a supply rating, to supply current to the inverter, of the DC bus; determining a regenerative current-based torque limit based on a receive rating, to receive current from the inverter, of the DC bus; determining a final torque limit based on the voltage-based torque limit, the motor current-based torque limit, the supply current-based torque limit, and the regenerative current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; and calculating at least one current command based on, at least, the limited command torque.