公开(公告)号：US20210396212A1

公开(公告)日：2021-12-23

申请号：US16907910

申请日：2020-06-22

Applicant: General Electric Company

Inventor： Einar Vaughn Larsen ,  Dustin Howard ,  Min Naing Lwin ,  Ignacio Vieto Miranda

IPC: F03D9/25 ,  H02P9/02 ,  H02J3/18

Abstract: A method for operating a inverter-based resource connected to a power grid includes receiving one or more voltage feedback signals created by at least one component of the inverter-based resource, wherein distortion components of the one or more voltage feedback signals are more sensitive to voltage distortion created by the inverter-based resource than by external sources of voltage distortion. Further, the method includes extracting a distortion component of the one or more feedback signals having a certain phase sequence and frequency. Moreover, the method includes determining a voltage command for the power converter as a function of, at least, the distortion component. Thus, the method includes controlling the power converter based on the voltage command such that the voltage distortion created by the at least one component of the inverter-based resource is reduced in a manner that is relatively insensitive to voltage distortion created by sources external to the inverter-based resource.

公开(公告)号：US11063441B2

公开(公告)日：2021-07-13

申请号：US16163902

申请日：2018-10-18

Applicant: General Electric Company

Inventor： Patrick Djan-Sampson ,  Einar Vaughn Larsen ,  Alfredo Sebastian Achilles ,  Enno Ubben

IPC: H02J3/38 ,  F03D7/02 ,  F03D7/04 ,  H02P101/15

Abstract: Systems and methods for managing or controlling resonance in wind turbine power systems are provided. In particular, a method for controlling a power system that includes a central master controller and one or more wind turbines electrically connected to a power grid through a point of interconnection can be provided, where each wind turbine includes a voltage regulator. The method can include receiving, by the controller, a signal from a sensor associated with wind turbines and determining, which wind turbines are operating in conditions indicative of a resonance condition in the wind turbine electrical power system based, at least in part, on the sensor signals. The method can also include generating one or more control signals based, at least in part, on a power requirement at the point of intersection and controlling an operational state of each of the voltage regulators based on the control signals.

公开(公告)号：US11031784B2

公开(公告)日：2021-06-08

申请号：US15897658

申请日：2018-02-15

Applicant: General Electric Company

Inventor： Alfredo Sebastian Achilles ,  Einar Vaughn Larsen

IPC: H02J3/18 ,  H02J3/38 ,  H02J3/16 ,  H02J3/50

Abstract: A method for maintaining sufficient reactive current margin in a power system connected to a power grid includes receiving, via a power limiter system, a reactive current command and an upper reactive current limit for the power system. The method also includes determining, via the power limiter system, a reactive current margin signal as a function of the reactive current command and the upper reactive current limit. Further, the method includes generating, via the power limiter system, a power command signal based on the reactive current margin signal. Moreover, the method includes controlling, via a system controller, operation of the power system based at least partially on the power command signal.

公开(公告)号：US20180328342A1

公开(公告)日：2018-11-15

申请号：US15594079

申请日：2017-05-12

Applicant: General Electric Company

Inventor： Wei Ren ,  Einar Vaughn Larsen

IPC: F03D9/25 ,  F03D17/00 ,  F03D7/04 ,  F03D7/02 ,  G05B19/042 ,  H02P9/00

Abstract: Systems and methods for controlling a power converter in a wind turbine system are provided. The wind turbine system can include a generator and a power converter. The power converter can include a plurality of switching devices and a current damping module. A method can include determining, by a control device, a flux magnitude of an air-gap between a rotor and a stator in the generator. The method can further include determining, by the control device, an orientation adjustment reference signal for the current damping module based at least in part on the flux magnitude. The method can further include controlling, by the control device, the power converter based at least in part on the orientation adjustment reference signal.

公开(公告)号：US09941828B2

公开(公告)日：2018-04-10

申请号：US14633452

申请日：2015-02-27

Applicant: General Electric Company

Inventor： Wei Ren ,  Einar Vaughn Larsen

IPC: H02P9/10 ,  F03D7/00 ,  H02P9/00 ,  H02J3/38 ,  F03D9/25

CPC classification number: H02P9/105 ,  F03D7/00 ,  F03D9/255 ,  H02J3/386 ,  H02P9/007 ,  Y02E10/763

Abstract: The present disclosure is directed to a system and method for stabilizing sub-synchronous interaction (SSI) of a wind turbine generator connected to a power grid. More specifically, the method includes measuring an alternating-current (a-c) quantity of the power grid. Another step includes converting the a-c quantity to a d-q quantity and providing the d-q quantity to a d-q control loop within the controller. Another step includes altering, with a symmetric control component, a transfer function of the d-q control loop. The method also includes generating at least one d-q reference signal for the wind turbine generator based on the altered transfer function so as to achieve symmetric control of the generator. A further step includes generating a control signal for the generator based, at least in part, on the at least one d-q reference signal. The method also includes operating the generator based on the control signal.

公开(公告)号：US20180041154A1

公开(公告)日：2018-02-08

申请号：US15230536

申请日：2016-08-08

Applicant: General Electric Company

Inventor： Einar Vaughn Larsen ,  Wei Ren ,  Dustin Howard ,  Alfredo Sebastian Achilles

IPC: H02P9/10 ,  H02K7/18 ,  F03D9/25 ,  H02P9/00 ,  F03D9/00

CPC classification number: H02P9/10 ,  F03D7/0284 ,  F03D7/044 ,  F03D9/003 ,  F03D9/25 ,  H02J3/26 ,  H02K7/183 ,  H02P9/007

Abstract: The present disclosure is directed to a system and method for controlling an electrical power system connected to a power grid. The method includes determining, via a negative sequence regulator programmed in a controller of the electrical power system, a negative sequence component of at least one electrical condition of the electrical power system. Further, the method includes determining a desired current response based on the negative sequence component of the at least one electrical condition of the electrical power system. Thus, the method also includes determining a control command for the power converter as a function of the desired current response so as to achieve a desired relationship between a voltage condition in the power grid and the negative sequence component of the electrical condition of the electrical power system.

公开(公告)号：US20170130699A1

公开(公告)日：2017-05-11

申请号：US14937129

申请日：2015-11-10

Applicant: General Electric Company

Inventor： Alfredo Sebastian Achilles ,  Einar Vaughn Larsen

IPC: F03D7/04 ,  G05F1/66 ,  G05B23/02 ,  G05B13/02 ,  F03D9/00 ,  F03D17/00

CPC classification number: F03D7/048 ,  F03D7/0284 ,  G05B13/0205 ,  G05B23/0281 ,  G05B2219/2619 ,  G05F1/66 ,  Y02E10/723

Abstract: The present disclosure is directed to a system and method for stabilizing disconnection of one or more wind turbines in a wind farm connected to a power grid during one or more grid contingency events. The method includes determining, via one or more processors, a phase-locked loop error signal for each of the wind turbines based on sensor signals from the plurality of wind turbines. The method also includes comparing the phase-locked loop error signal of each wind turbine to at least one predetermined threshold for a predetermined time period. If the phase-locked loop error signal for one or more of the wind turbines comprises a positive value that exceeds the predetermined threshold for the predetermined time period, then the method includes generating a trip signal for the one or more of the wind turbines based on the phase-locked loop error signal, the positive value being indicative of system instability, wherein the trip signal is configured to disconnect the one or more wind turbines from the power grid.

公开(公告)号：US09641113B2

公开(公告)日：2017-05-02

申请号：US14193755

申请日：2014-02-28

Applicant: General Electric Company

Inventor： Einar Vaughn Larsen ,  Wei Ren ,  Sidney Allen Barker

IPC: G05F5/00 ,  H02P9/00 ,  F03D7/00 ,  F03D9/00 ,  F03D7/02 ,  H02J3/38 ,  H02J3/44 ,  H02M5/458 ,  H02P23/26 ,  H02M1/00

CPC classification number: H02P9/007 ,  F03D7/00 ,  F03D7/0284 ,  F03D9/255 ,  H02J3/386 ,  H02J3/44 ,  H02M5/4585 ,  H02M2001/0025 ,  H02P23/26 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: In one aspect, a method for controlling a power generation system may generally include determining a phase angle error associated with the power generation system, determining a scaling factor based on the phase angle error, generating a current command for controlling the operation of a power convertor of the power generation system and applying the scaling factor to the current command such that the current command is reduced when the phase angle error exceeds a predetermined error threshold.

公开(公告)号：US20150256094A1

公开(公告)日：2015-09-10

申请号：US14201062

申请日：2014-03-07

Applicant: General Electric Company

Inventor： Nilanjan Ray Chaudhuri ,  Ranjan Kumar Gupta ,  Einar Vaughn Larsen

IPC: H02M5/458 ,  H02J3/36

CPC classification number: H02M5/4585 ,  H02J3/36 ,  H02M7/7575 ,  Y02E60/60

Abstract: A hybrid HVDC converter system includes a DC bus, at least one capacitor commutated converter (CCC) and at least one self-commutated converter (SCC) coupled in series through the DC bus. The CCC induces a first voltage on the DC buses, the SCC induces a second voltage on the DC bus, the first voltage and the second voltage are summed to define a total DC voltage. The method includes at least one of regulating the total DC voltage induced on the DC buses including regulating the first DC voltage through the CCC and regulating the second DC voltage through the SCC substantially simultaneously, regulating the total DC voltage induced on the DC bus including regulating the second DC voltage through the SCC, and regulating the total DC voltage induced on the DC bus including regulating the first DC voltage through the CCC.

Abstract translation: 混合HVDC转换器系统包括DC总线，至少一个电容整流转换器（CCC）和至少一个通过DC总线串联耦合的自整流转换器（SCC）。 CCC在DC总线上引入第一电压，SCC在DC总线上产生第二电压，将第一电压和第二电压相加以定义总直流电压。 该方法包括至少一个调节在直流总线上感应的总直流电压，包括通过CCC调节第一直流电压并且基本上同时调节通过SCC的第二直流电压，调节在直流总线上引起的总直流电压，包括调节 通过SCC的第二直流电压，并调节直流总线上感应的总直流电压，包括通过CCC调节第一直流电压。

公开(公告)号：US20150249413A1

公开(公告)日：2015-09-03

申请号：US14193812

申请日：2014-02-28

Applicant: General Electric Company

Inventor： Wei Ren ,  Einar Vaughn Larsen ,  Sidney Allen Barker

IPC: H02P9/00 ,  F03D9/00 ,  F03D7/00

CPC classification number: H02P9/007 ,  F03D7/00 ,  F03D7/0284 ,  F03D9/255 ,  H02J3/386 ,  H02P9/102 ,  H02P9/107 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: In one aspect, a method for controlling the operation of a power generation system configured to supply power to an electrical grid may generally include monitoring a rotor speed of a generator of the power generation system and determining a gain scaling factor based on the rotor speed, wherein the gain scaling factor increases with decreases in the rotor speed across a range of rotor speeds. In addition, the method may include adjusting a regulator gain to be applied within a current regulator of the power generation system based on the gain scaling factor and applying the adjusted regulator gain within the current regulator in order to generate a voltage command signal for controlling a power converter of the power generation system.

Abstract translation: 一方面，一种用于控制配置成向电网供电的发电系统的操作的方法通常可以包括监测发电系统的发电机的转子速度，并且基于转子速度确定增益比例因子， 其中所述增益比例因子随着转子速度范围内的转子速度的降低而增加。 此外，该方法可以包括基于增益缩放因子来调整要施加在发电系统的电流调节器内的调节器增益，并且在电流调节器内施加经调节的调节器增益，以便产生用于控制电压的电压指令信号 电力转换器的发电系统。