公开(公告)号：US20220094295A1

公开(公告)日：2022-03-24

申请号：US17028982

申请日：2020-09-22

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhendong Zhang ,  Jacob Lamb

IPC: H02P27/08 ,  H02P21/22

Abstract: For high frequency injection (HFI) transition disturbance elimination, a processor directs an HFI transition for a motor. The processor determines compensation pulse voltages for an HFI compensation pulse. The processor further injects a sum of the HFI compensation pulse and an HFI voltage into a current regulator voltage output signal for a compensation Pulse Width Modulation (PWM) cycle. The HFI compensation pulse settles an HFI current to a steady state

公开(公告)号：US20220065909A1

公开(公告)日：2022-03-03

申请号：US17010624

申请日：2020-09-02

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Lixiang Wei ,  Bing Li ,  Jacob Lamb

IPC: G01R27/08 ,  H02P23/14 ,  H02P27/06

Abstract: For motor stator resistance calculation, a method estimates an output voltage using a Direct Current (DC) bus voltage and a duty ratio for a motor drive at a first switching frequency and at least one second switching frequency. The method measures an output current at the first switching frequency and the at least one second switching frequency. The method calculates a first stator resistance for the first switching frequency and at least one second stator resistance for the at least one second switching frequency. The method estimates a stator resistance at a DC condition based on the first stator resistance and the at least one second stator resistance. The method sets a dynamic compensation based on a stator resistance error between the first switching frequency and the at least one second switching frequency.

公开(公告)号：US20220407439A1

公开(公告)日：2022-12-22

申请号：US17350090

申请日：2021-06-17

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jacob Lamb ,  Zhendong Zhang

IPC: H02P6/28

Abstract: For polyharmonic flux motor loss increase, a method offsets pulse width modulation (PWM) carriers to a motor to increase motor harmonics. The offset PWM carriers increase energy losses for the motor.

公开(公告)号：US11277088B1

公开(公告)日：2022-03-15

申请号：US17028982

申请日：2020-09-22

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhendong Zhang ,  Jacob Lamb

IPC: H02P27/08 ,  H02P21/22

Abstract: For high frequency injection (HFI) transition disturbance elimination, a processor directs an HFI transition for a motor. The processor determines compensation pulse voltages for an HFI compensation pulse. The processor further injects a sum of the HFI compensation pulse and an HFI voltage into a current regulator voltage output signal for a compensation Pulse Width Modulation (PWM) cycle. The HFI compensation pulse settles an HFI current to a steady state.

公开(公告)号：US11901855B2

公开(公告)日：2024-02-13

申请号：US17350090

申请日：2021-06-17

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jacob Lamb ,  Zhendong Zhang

IPC: H02P6/28 ,  H02P27/08

CPC classification number: H02P6/28

Abstract: For polyharmonic flux motor loss increase, a method offsets pulse width modulation (PWM) carriers to a motor to increase motor harmonics. The offset PWM carriers increase energy losses for the motor.

公开(公告)号：US11366147B2

公开(公告)日：2022-06-21

申请号：US17010624

申请日：2020-09-02

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Lixiang Wei ,  Bing Li ,  Jacob Lamb

IPC: H02P21/14 ,  G01R27/08 ,  H02P23/14 ,  H02P27/06

Abstract: For motor stator resistance calculation, a method estimates an output voltage using a Direct Current (DC) bus voltage and a duty ratio for a motor drive at a first switching frequency and at least one second switching frequency. The method measures an output current at the first switching frequency and the at least one second switching frequency. The method calculates a first stator resistance for the first switching frequency and at least one second stator resistance for the at least one second switching frequency. The method estimates a stator resistance at a DC condition based on the first stator resistance and the at least one second stator resistance. The method sets a dynamic compensation based on a stator resistance error between the first switching frequency and the at least one second switching frequency.

公开(公告)号：US11239780B1

公开(公告)日：2022-02-01

申请号：US17031359

申请日：2020-09-24

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Jacob Lamb ,  Bing Li ,  Brian Seibel

IPC: H02P21/14

Abstract: For flux map identification, a method applies an initial voltage to a motor. The motor is a salient motor. The method generates a flux map for the motor. The method iteratively applies a variable voltage to the motor. The variable voltage includes a constant current change calculated from the flux map. The method iteratively modifies the flux map.