公开(公告)号：US20210257956A1

公开(公告)日：2021-08-19

申请号：US16789640

申请日：2020-02-13

Applicant: General Electric Company

Inventor： Antonio Caiafa ,  Di Pan

IPC: H02P29/028 ,  H02P25/22 ,  H02P27/08 ,  H02P29/50

Abstract: A system may be provided that may include an integrated motor drive configured to couple to a motor. The integrated motor drive may include a first converter that may be configured to electrically couple with a winding assembly of the motor. The first converter may include at least first conversion circuitry configured to form a first electrical excitation waveform and second conversion circuitry coupled in parallel to the second conversion circuitry and configured to form a second electrical excitation waveform. The first converter may also include a first transformer configured to form a first summation electrical excitation waveform from the first electrical excitation waveform and the second electrical excitation waveform that drives the motor.

公开(公告)号：US20190140557A1

公开(公告)日：2019-05-09

申请号：US15806352

申请日：2017-11-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Jiangbiao He ,  Sachin Madhusoodhanan ,  Di Pan

IPC: H02M7/5395

Abstract: A method for operating a phase-leg of a three-level active neutral point clamped (3L-ANPC) converter is presented. The phase-leg includes an output terminal, a plurality of input terminals, and a plurality of switches disposed therebetween. The method includes operating the phase-leg in a neutral state to generate an output voltage having a neutral level. The method further includes transitioning the phase-leg to a first intermediate neutral state from the neutral state. Moreover, the method includes transitioning the phase-leg from the first intermediate neutral state to a first state to generate the output voltage having a first level. A modulator for operating the phase-leg of the 3L-ANPC converter is also presented. Moreover, a 3L-ANPC converter including the modulator is presented.

公开(公告)号：US10273940B2

公开(公告)日：2019-04-30

申请号：US15152664

申请日：2016-05-12

Applicant: General Electric Company

Inventor： Di Pan ,  Liwei Hao ,  Lijun He ,  Stefan Grubic

IPC: G06F11/00 ,  F03D17/00 ,  F03D7/02 ,  F03D80/70

Abstract: The present disclosure is directed to a system and method for detecting damage of a pitch bearing of a wind turbine. The pitch bearing is part of a pitch drive system having a plurality of pitch drive motors. The method includes measuring at least one electrical signal of the pitch drive system. The method also includes processing the electrical signal(s) of the pitch drive system and comparing the electrical signals of the pitch drive system with a baseline threshold. Thus, the method also includes determining whether damage is present in the pitch bearing based, at least in part, on the comparison, wherein the electrical signal(s) exceeding the baseline threshold is indicative of damage in the pitch bearing.

公开(公告)号：US20180375456A1

公开(公告)日：2018-12-27

申请号：US15634723

申请日：2017-06-27

Applicant: General Electric Company

Inventor： Kum Kang Huh ,  Di Pan ,  David Allan Torrey ,  Nathaniel Benedict Hawes ,  Tomas Sadilek

IPC: H02P23/14 ,  H02P27/06 ,  E21B43/12

Abstract: A method includes controlling a first power output to an electric machine during a transient event. Controlling the first power output includes measuring values of the first power output provided to the electric machine during the transient event, receiving an estimated speed input of the electric machine, determining adjustment commands to compensate the first power output for the transient event of the electric machine, generating switch commands for gate drives of a variable frequency drive (VFD) based at least in part on the adjustment commands, and modifying the first power output during the transient event based on the switch commands.

公开(公告)号：US20180097466A1

公开(公告)日：2018-04-05

申请号：US15282399

申请日：2016-09-30

Applicant: General Electric Company

Inventor： Kum Kang Huh ,  David Allan Torrey ,  Di Pan ,  Nathaniel Benedict Hawes ,  Tomas Sadilek

IPC: H02P29/028 ,  F04D13/08 ,  F04D13/10 ,  F04D15/00 ,  F04D29/22 ,  F04D29/42 ,  H02K11/26 ,  H02K5/132

CPC classification number: H02P29/028 ,  E21B43/128 ,  F04D13/086 ,  F04D13/10 ,  F04D15/0088 ,  F04D29/22 ,  F04D29/426 ,  H02K5/132 ,  H02K11/26

Abstract: A method of controlling an electric motor assembly includes detecting a backspin event of an electric motor, and managing a response to the detected backspin event of the electric motor. The backspin event of the electric motor is detected based at least in part on feedback from a sensor configured to measure a current or a voltage on a cable coupled to the electric motor. The response includes communicating an alert to personnel, controlling the voltage on the cable to be less than a voltage threshold, or any combination thereof.

公开(公告)号：US20180094512A1

公开(公告)日：2018-04-05

申请号：US15282321

申请日：2016-09-30

Applicant: General Electric Company

Inventor： Tomas Sadilek ,  Nathaniel Benedict Hawes ,  David Allan Torrey ,  Di Pan ,  Kum Kang Huh

IPC: E21B43/12 ,  E21B47/00 ,  H02P9/14 ,  H02P25/022 ,  H02P27/06

CPC classification number: E21B43/128 ,  E21B47/0007 ,  H02P9/14 ,  H02P21/20 ,  H02P25/024 ,  H02P27/04 ,  H02P27/06

Abstract: A system including a control system is provided. The control system includes a main drive that receives power from a power source and outputs a variable frequency and a variable amplitude AC voltage. The control system also includes a controller to interface with the main drive and an electric machine. The controller receives one or more electrical signals associated with an operating condition of the electric machine from one or more sensors disposed between the electric machine and the main drive. The controller determines correction information based on the received electrical signals and based on a desired operating condition of the electric machine. The controller transmits the correction information to the main drive. The correction information corresponds to a rotor position of the electric machine or operating commands configured to implement the desired operating condition of the electric machine.

公开(公告)号：US12034298B2

公开(公告)日：2024-07-09

申请号：US17571691

申请日：2022-01-10

Applicant: General Electric Company

Inventor： Honggang Wang ,  Di Pan ,  Kum Kang Huh

IPC: H02J1/10 ,  B64D41/00 ,  F01D15/10

CPC classification number: H02J1/106 ,  F01D15/10 ,  B64D2041/005 ,  B64D2221/00 ,  F05D2220/762 ,  F05D2220/768 ,  H02J2310/44

Abstract: An aircraft electrical system including: a first DC power bus and a fuel cell assembly including a first fuel cell group, wherein the first fuel cell group is electrically coupled directly to the first DC power bus without a voltage converter to provide a first power output to the first DC power bus.

公开(公告)号：US20200067383A1

公开(公告)日：2020-02-27

申请号：US16113401

申请日：2018-08-27

Applicant: General Electric Company

Inventor： Robert Charles Hon ,  Di Pan ,  Pablo Gabriel Piazza Galarza ,  Paul Robert Gemin

IPC: H02K7/18 ,  F01D15/10

Abstract: A method for operating a permanent magnet electric machine of an engine includes determining a fault condition of the permanent magnet electric machine; and reducing a magnetism of one or more permanent magnets of the permanent magnet electric machine by increasing a temperature of the one or more permanent magnets in response to determining the fault condition of the permanent magnet electric machine.

公开(公告)号：US10291150B1

公开(公告)日：2019-05-14

申请号：US15806352

申请日：2017-11-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Di Zhang ,  Jiangbiao He ,  Sachin Madhusoodhanan ,  Di Pan

IPC: H02M7/5395 ,  H02M7/487

Abstract: A method for operating a phase-leg of a three-level active neutral point clamped (3L-ANPC) converter is presented. The phase-leg includes an output terminal, a plurality of input terminals, and a plurality of switches disposed therebetween. The method includes operating the phase-leg in a neutral state to generate an output voltage having a neutral level. The method further includes transitioning the phase-leg to a first intermediate neutral state from the neutral state. Moreover, the method includes transitioning the phase-leg from the first intermediate neutral state to a first state to generate the output voltage having a first level. A modulator for operating the phase-leg of the 3L-ANPC converter is also presented. Moreover, a 3L-ANPC converter including the modulator is presented.

公开(公告)号：US10272788B2

公开(公告)日：2019-04-30

申请号：US14838485

申请日：2015-08-28

Applicant: General Electric Company

Inventor： Kum-Kang Huh ,  Di Pan

IPC: H02J1/00 ,  B60L11/18 ,  B60L11/00 ,  H02M3/04 ,  H02M7/44

Abstract: A hybrid energy system for providing power to a load and for providing a fast variation of DC link voltage to improve system efficiency is disclosed. The system includes a load, a direct current (DC) link electrically coupled to the load, an energy storage system having a first energy storage device and a second energy storage device arranged in series, and a bi-directional DC-DC converter electrically coupled to the DC link and to the energy storage system, the bi-directional DC-DC converter being connected to a node located between the first energy storage device and the second energy storage device and to a node connecting the second energy storage device to the DC link.