公开(公告)号：US11591009B2

公开(公告)日：2023-02-28

申请号：US16693516

申请日：2019-11-25

Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

Inventor： Haibo Li ,  Prerit Pramod ,  Krishna M P K Namburi ,  Zhe Zhang

IPC: B62D5/04 ,  H02P21/22 ,  H02P6/08

Abstract: Technical solutions are described for controlling operation of an electric machine such as a permanent magnet synchronous motor (PMSM) drive or motor control system to protect against excessive machine current or voltage in a PMSM drive. Systems and methods employ a torque control algorithm for PMSMs that uses the constraints of both machine current and voltage capability in PMSM drives, and online torque command modification according to the maximum allowed torque under these machine current and voltage constraints.

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.