公开(公告)号：US20230366968A1

公开(公告)日：2023-11-16

申请号：US17742870

申请日：2022-05-12

Applicant: BorgWarner Inc.

Inventor： Caleb W. Secrest ,  James R. Smith

IPC: G01R35/00 ,  H02P23/14 ,  G01P3/48 ,  G01R19/00

CPC classification number: G01R35/00 ,  H02P23/14 ,  G01P3/48 ,  G01R19/0038

Abstract: A method of evaluating current sensor measurements of an electric machine system includes acquiring a first current signal corresponding to a first measurement of a first phase current of a three phase electric current supply to an electric machine, and acquiring a second current signal corresponding to a second measurement of a second phase current of the three phase electric current supply. The method also includes determining a machine velocity, shifting the first current signal by a signal processing component to generate a shifted first current signal having a shifted phase, the signal processing component including a tuning parameter that is a function of the machine velocity, calculating an amplitude difference between the shifted first current signal and the second current signal, and determining a plausibility of the first measurement and the second measurement based on the difference.

公开(公告)号：US20240391324A1

公开(公告)日：2024-11-28

申请号：US18200087

申请日：2023-05-22

Applicant: BorgWarner Inc.

Inventor： Chikezie M. Emeghara ,  Hassan H. Eldeeb ,  Siddharth Ballal ,  Caleb W. Secrest

IPC: B60L3/00 ,  B60L15/20 ,  B60L53/20 ,  G01R19/25

Abstract: A control system configured to control an electric motor of an electric vehicle (EV) includes a current sensor offset detector that determines an offset of one or more current sensors; a gain compensator that determines a second order harmonic component in d- and q-axis currents due to gain errors in one or more sensors; and a controller that generates a control signal that compensates for the offset or gain error mismatch of the current sensor(s).

公开(公告)号：US11239787B2

公开(公告)日：2022-02-01

申请号：US17011223

申请日：2020-09-03

Applicant: BorgWarner Inc.

Inventor： Caleb W. Secrest

IPC: H02P27/08 ,  H02M1/38 ,  H02M7/5387

Abstract: A control system and method of controlling a multi-phase electric machine for controlling the flow of electrical current between a voltage source and the multi-phase electric machine or other application/load. The control system includes, between each phase of the multi-phase electric machine and the voltage source: a high side diode and a high side switch positioned in parallel between a positive terminal of the voltage source and the electric machine with the high side diode being reverse biased with regard to the positive terminal; and a low side diode and a low side switch positioned in parallel between a negative terminal of the voltage source and the electric machine with the low side diode being reverse biased with regard to the electric machine. The control system operates the high side and low side switches to provide efficient operation of the electric machine.

公开(公告)号：US12047022B2

公开(公告)日：2024-07-23

申请号：US17492766

申请日：2021-10-04

Applicant: BorgWarner Inc.

Inventor： Dwarakanath V. Simili ,  Caleb W. Secrest

IPC: H02P21/14 ,  H02P21/00

CPC classification number: H02P21/141 ,  H02P21/0089

Abstract: A method of controlling a motor controlled by a motor controller that includes a complex vector flux regulator (CVλR). The method includes: receiving at a field weakening regulator of the motor controller a modulation index that is a scaled version of an available voltage available to be provided to the motor by a voltage source; comparing the modulation index to a feedback modulation index to produce an error scalar that has a magnitude in a flux domain; determining a final direction (αfinal) of the error scalar in the flux domain; and providing the CVλR with flux commands in the d and q domain based on the error scalar and the direction.

公开(公告)号：US11927662B2

公开(公告)日：2024-03-12

申请号：US17742870

申请日：2022-05-12

Applicant: BorgWarner Inc.

Inventor： Caleb W. Secrest ,  James R. Smith

IPC: G01R19/00 ,  G01P3/48 ,  G01R35/00 ,  H02P23/14

CPC classification number: G01R35/00 ,  G01P3/48 ,  G01R19/0038 ,  H02P23/14

Abstract: A method of evaluating current sensor measurements of an electric machine system includes acquiring a first current signal corresponding to a first measurement of a first phase current of a three phase electric current supply to an electric machine, and acquiring a second current signal corresponding to a second measurement of a second phase current of the three phase electric current supply. The method also includes determining a machine velocity, shifting the first current signal by a signal processing component to generate a shifted first current signal having a shifted phase, the signal processing component including a tuning parameter that is a function of the machine velocity, calculating an amplitude difference between the shifted first current signal and the second current signal, and determining a plausibility of the first measurement and the second measurement based on the difference.

公开(公告)号：US20210104971A1

公开(公告)日：2021-04-08

申请号：US17011223

申请日：2020-09-03

Applicant: BorgWarner Inc.

Inventor： Caleb W. Secrest

IPC: H02P27/08 ,  H02M7/5387 ,  H02M1/38

Abstract: A control system and method of controlling a multi-phase electric machine for controlling the flow of electrical current between a voltage source and the multi-phase electric machine or other application/load. The control system includes, between each phase of the multi-phase electric machine and the voltage source: a high side diode and a high side switch positioned in parallel between a positive terminal of the voltage source and the electric machine with the high side diode being reverse biased with regard to the positive terminal; and a low side diode and a low side switch positioned in parallel between a negative terminal of the voltage source and the electric machine with the low side diode being reverse biased with regard to the electric machine. The control system operates the high side and low side switches to provide efficient operation of the electric machine.

公开(公告)号：US20250115139A1

公开(公告)日：2025-04-10

申请号：US18376599

申请日：2023-10-04

Applicant: BorgWarner Inc.

Inventor： Hassan H. Eldeeb ,  Ujjwal Kumar ,  Ronald J. Krefta ,  Caleb W. Secrest

IPC: B60L15/20 ,  B60L15/04 ,  H02M1/00 ,  H02M7/5395

Abstract: A method of operating a power inverter for an electric machine includes selecting an inverter switching technique; determining a frequency range for inverter switching; determining a direct current (DC) voltage range for inverter switching; determining an optimal switching map including an inverter switching technique and frequency selection for each value of torque-speed on a torque-speed curve; and controlling switches included in the power inverter using the optimal switching map.

公开(公告)号：US20240424906A1

公开(公告)日：2024-12-26

申请号：US18211776

申请日：2023-06-20

Applicant: BorgWarner Inc.

Inventor： James Smith ,  Hassan H. Eldeeb ,  Caleb W. Secrest ,  Siddharth Ballal

IPC: B60L3/00

Abstract: A control system for generating a torque command for an electric motor carried by an electric vehicle (EV) including a motion observer configured to receive an angular position of an output shaft of the electric motor and an ideal torque command and output an estimated disturbance torque value; and a controller configured to receive the estimated disturbance torque value as well as output a harmonic disturbance torque value.