公开(公告)号：US20240248522A1

公开(公告)日：2024-07-25

申请号：US18307375

申请日：2023-04-26

Applicant: General Electric Company

Inventor： Kum Kang Huh ,  Hridya Ittamveettil ,  Luis J. Garces ,  Rajib Datta ,  Di Pan ,  Yukai Wang

IPC: G06F1/30 ,  B64D41/00 ,  H02M1/00 ,  H02M7/797

CPC classification number: G06F1/30 ,  B64D41/00 ,  H02M1/0043 ,  H02M7/797

Abstract: A multilevel power converter includes a plurality of switches, a first DC link capacitor, a second DC link capacitor, and one or more processors configured to: generate, for a duty cycle of the multilevel power converter, a pulse width modulated pulse pattern in accordance with a reduced common mode voltage scheme; modify the pulse width modulated pulse pattern to render a modified pulse pattern; and cause the plurality of switches to implement the duty cycle based at least in part on the modified pulse pattern to render a common mode voltage pulse to balance voltages at the first DC link capacitor and the second DC link capacitor.

公开(公告)号：US20230396147A1

公开(公告)日：2023-12-07

申请号：US18453629

申请日：2023-08-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Pan ,  Yichao Zhang ,  Yuntao Xu ,  Yukai Wang

IPC: H02M1/08 ,  H02M7/487 ,  H02M7/5395

CPC classification number: H02M1/08 ,  H02M7/487 ,  H02M7/5395

Abstract: A power converter apparatus comprises a set of switching elements communicatively coupled with a set of gate drive circuits. Each gate drive circuit is configured to provide a respective drive signal to a corresponding switching element, each switching element being switchably responsive to the respective drive signal. The apparatus includes a controller module configured to control an output state of the power converter, and selectively change one of a respective gate resistance and a respective gate current of a corresponding subset of the gate drive circuits based on the output state of the power converter.

公开(公告)号：US20230058067A1

公开(公告)日：2023-02-23

申请号：US17401402

申请日：2021-08-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Pan ,  Yichao Zhang ,  Yuntao Xu ,  Yukai Wang

IPC: H02M1/08 ,  H02M7/5395 ,  H02M7/487

Abstract: A power converter apparatus comprises a set of switching elements communicatively coupled with a set of gate drive circuits. Each gate drive circuit is configured to provide a respective drive signal to a corresponding switching element, each switching element being switchably responsive to the respective drive signal. The apparatus includes a controller module configured to control an output state of the power converter, and selectively change one of a respective gate resistance and a respective gate current of a corresponding subset of the gate drive circuits based on the output state of the power converter.

公开(公告)号：US20250055366A1

公开(公告)日：2025-02-13

申请号：US18927037

申请日：2024-10-25

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Pan ,  Yichao Zhang ,  Yuntao Xu ,  Yukai Wang

IPC: H02M1/08 ,  H02M7/487 ,  H02M7/5395

Abstract: A power converter apparatus comprises a set of switching elements communicatively coupled with a set of gate drive circuits. Each gate drive circuit is configured to provide a respective drive signal to a corresponding switching element, each switching element being switchably responsive to the respective drive signal. The apparatus includes a controller module configured to control an output state of the power converter, and selectively change one of a respective gate resistance and a respective gate current of a corresponding subset of the gate drive circuits based on the output state of the power converter.

公开(公告)号：US12132391B2

公开(公告)日：2024-10-29

申请号：US18453629

申请日：2023-08-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Pan ,  Yichao Zhang ,  Yuntao Xu ,  Yukai Wang

IPC: H02M1/08 ,  H02M7/487 ,  H02M7/5395

CPC classification number: H02M1/08 ,  H02M7/487 ,  H02M7/5395

Abstract: A power converter apparatus comprises a set of switching elements communicatively coupled with a set of gate drive circuits. Each gate drive circuit is configured to provide a respective drive signal to a corresponding switching element, each switching element being switchably responsive to the respective drive signal. The apparatus includes a controller module configured to control an output state of the power converter, and selectively change one of a respective gate resistance and a respective gate current of a corresponding subset of the gate drive circuits based on the output state of the power converter.

公开(公告)号：US11831232B2

公开(公告)日：2023-11-28

申请号：US17401402

申请日：2021-08-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Pan ,  Yichao Zhang ,  Yuntao Xu ,  Yukai Wang

IPC: H02M1/08 ,  H02M7/487 ,  H02M7/5395

CPC classification number: H02M1/08 ,  H02M7/487 ,  H02M7/5395

Abstract: A power converter apparatus comprises a set of switching elements communicatively coupled with a set of gate drive circuits. Each gate drive circuit is configured to provide a respective drive signal to a corresponding switching element, each switching element being switchably responsive to the respective drive signal. The apparatus includes a controller module configured to control an output state of the power converter, and selectively change one of a respective gate resistance and a respective gate current of a corresponding subset of the gate drive circuits based on the output state of the power converter.

公开(公告)号：US11177759B2

公开(公告)日：2021-11-16

申请号：US16698622

申请日：2019-11-27

Applicant: General Electric Company

Inventor： Kum-Kang Huh ,  Yukai Wang ,  Nidhishri Tapadia ,  Di Pan

IPC: H02P27/08 ,  H02P21/18 ,  H02P21/22

Abstract: A drive system for driving an AC electric machine includes an electric machine power converter that provides a primary current excitation vector having a magnitude and angle to drive the AC electric machine. A control system separate from or incorporated into the power converter causes the power converter to inject a carrier signal to the AC electric machine that is superimposed onto the current vector and that generates a carrier response signal that has sensitivity to magnetic alignment information of the AC electric machine at its operating point, the carrier response signal providing a measurable magnetic alignment signature of the AC electric machine. The control system causes the power converter to inject the carrier signal at an injection angle between a constant flux injection angle and a constant torque injection angle, to reduce noise and/or vibration of the AC electric machine caused by the injected carrier signal.

公开(公告)号：US20200169212A1

公开(公告)日：2020-05-28

申请号：US16698622

申请日：2019-11-27

Applicant: General Electric Company

Inventor： Kum-Kang Huh ,  Yukai Wang ,  Nidhishri Tapadia ,  Di Pan

IPC: H02P27/08 ,  H02P21/22 ,  H02P21/18

Abstract: A drive system for driving an AC electric machine includes an electric machine power converter that provides a primary current excitation vector having a magnitude and angle to drive the AC electric machine. A control system separate from or incorporated into the power converter causes the power converter to inject a carrier signal to the AC electric machine that is superimposed onto the current vector and that generates a carrier response signal that has sensitivity to magnetic alignment information of the AC electric machine at its operating point, the carrier response signal providing a measurable magnetic alignment signature of the AC electric machine. The control system causes the power converter to inject the carrier signal at an injection angle between a constant flux injection angle and a constant torque injection angle, to reduce noise and/or vibration of the AC electric machine caused by the injected carrier signal.