公开(公告)号：US20180081380A1

公开(公告)日：2018-03-22

申请号：US15269110

申请日：2016-09-19

Applicant: General Electric Company

Inventor： Eva-Maria Baerthlein ,  Eva Bernal Serra ,  Marianne Luise Susanne Hartung ,  Ara Panosyan ,  Luca Parolini

IPC: G05F1/147

CPC classification number: G05F1/147 ,  H02J3/12 ,  H02J3/1878 ,  H02J3/381 ,  H02J3/382 ,  H02J13/0013 ,  H02J2003/007

Abstract: An electric power system includes an OLTC transformer including a plurality of primary and secondary windings inductively coupled to each other. The electric power system includes at least one on-load tap changer coupled to at least one of the primary and secondary windings that is selectively configurable to regulate the portion of the primary and secondary windings inductively coupled to each other. The electric power system also includes a plurality of buses coupled to the transformer and are positioned downstream therefrom. The electric power system further includes at least one processor coupled to the tap changer configured to regulate a voltage bandwidth of the tap changer as a function of estimated voltage values of at least one bus as estimated based on a priori values of power/current transmitted through each bus. The a priori values are substantially based on measured power/current transmission through the on-load tap changer.

公开(公告)号：US09601918B2

公开(公告)日：2017-03-21

申请号：US14540536

申请日：2014-11-13

Applicant: General Electric Company

Inventor： Ara Panosyan ,  Stefan Schroeder ,  Christoph Boeld ,  Herbert Schaumberger ,  Johann Hirzinger-Unterrainer ,  Xiaoting Dong ,  Uwe Liebscher

IPC: B60L7/00 ,  H02H7/06 ,  H02P9/10 ,  H02J3/40 ,  H02J3/42 ,  H02P9/04 ,  F03D7/02 ,  H02P3/04 ,  H02P9/06 ,  F16D121/20

CPC classification number: H02H7/067 ,  F03D7/0244 ,  F03D7/0272 ,  F16D2121/20 ,  H02J3/40 ,  H02J3/42 ,  H02P3/04 ,  H02P9/04 ,  H02P9/06 ,  H02P9/102 ,  Y02E10/723 ,  Y10T307/735 ,  Y10T477/814

Abstract: An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system for operating in an island mode. The rotatable shaft is operatively coupled between a prime mover and a generator for supplying power to an island grid. The electromagnetic braking system further includes a controller for receiving at least one status or synchronization signal and for generating a control signal based on the at least one signal and an inducting unit for applying an electromagnetic braking force on the electrically conductive disc when commanded by the control signal to regulate a rotational speed of the rotatable shaft.

公开(公告)号：US09400512B2

公开(公告)日：2016-07-26

申请号：US14109290

申请日：2013-12-17

Applicant: General Electric Company

Inventor： Eva-Maria Baerthlein ,  Ara Panosyan

IPC: H01F21/00 ,  G05F1/14 ,  H02J3/18 ,  H02P13/06

CPC classification number: G05F1/14 ,  H02J3/1878 ,  H02P13/06 ,  Y02E40/30

Abstract: An electric power system includes an on-load tap changing (OLTC) transformer. The transformer includes a plurality of primary windings and a plurality of secondary windings. At least a portion of one of the primary windings and the secondary windings are inductively coupled to each other. The system also includes at least one on-load tap changer coupled to at least one of the primary windings and the secondary windings. The on-load tap changer is selectively configurable to regulate the portion of at least one of the primary windings and the secondary windings inductively coupled to each other. The system further includes at least one processor coupled to the on-load tap changer. The processor is configured to adaptively regulate a voltage set-point of the on-load tap changer as a function of an adaptive OLTC transformer power flow dependent voltage set-point characteristic.

Abstract translation: 电力系统包括有载分接变换（OLTC）变压器。 变压器包括多个初级绕组和多个次级绕组。 初级绕组和次级绕组中的一个的至少一部分彼此电感耦合。 该系统还包括耦合到初级绕组和次级绕组中的至少一个的至少一个有载分接开关。 有载分接开关可选择性地配置为调节彼此感应耦合的初级绕组和次级绕组中的至少一个的部分。 该系统还包括耦合到有载分接开关的至少一个处理器。 该处理器被配置为根据自适应OLTC变压器功率流依赖电压设定点特性自适应地调节有载分接开关的电压设定点。

公开(公告)号：US20150301538A1

公开(公告)日：2015-10-22

申请号：US14258667

申请日：2014-04-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ara Panosyan ,  Eva-Maria Baerthlein ,  Simon Herbert Schramm ,  Stefan Schroeder ,  Rohit Kumar Gupta ,  Pinwan Thiwanka Bandara Wijekoon ,  Malcolm Graham Smith, Jr.

IPC: G05F1/20

CPC classification number: G05F1/20 ,  H01F29/04 ,  H01H9/0005

Abstract: A method of switching taps of an on-load tap changer includes providing a main finger, a first side finger including a first solid state switch and a second side finger including a second solid state switch. The main finger, the first side finger and the second side finger are utilized to provide a connection between the taps and a power terminal of the on-load tap changer. The method also includes triggering the on-load tap changer to shift the fingers from a first tap to a second tap of the on-load tap changer when a tap change signal is received and utilizing the first solid state switch and the second solid state switch to commutate a current during the tap change operation.

Abstract translation: 一种开关有载分接开关的抽头的方法包括提供主指，包括第一固态开关的第一侧指和包括第二固态开关的第二侧指。 主指状物，第一侧指和第二侧指用于提供抽头与有载分接开关的电源端之间的连接。 该方法还包括当接收到抽头变换信号时触发有载分接开关将手指从第一抽头移动到有载分接开关的第二抽头，并利用第一固态开关和第二固态开关 在分接变换操作期间换向电流。

公开(公告)号：US20150097371A1

公开(公告)日：2015-04-09

申请号：US14566145

申请日：2014-12-10

Applicant: General Electric Company

Inventor： Ara Panosyan ,  Christoph Boeld ,  Herbert Schaumberger ,  Stefan Schroeder ,  Lukas Vogl ,  Mikhail Avramovich Avanesov

IPC: H02P9/00 ,  H02K49/04

CPC classification number: H02K49/046 ,  F03D7/0244 ,  F03D7/0272 ,  F16D2066/003 ,  F16D2121/20 ,  H02P3/04 ,  H02P9/06 ,  Y02E10/723

Abstract: An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system. The rotatable shaft is operatively coupled to a prime mover and a generator. The electromagnetic braking system further includes an inducting unit for applying an electromagnetic braking torque on the electrically conductive disc when commanded by a control signal and a controller for receiving an activation signal from an activating unit, receiving a rotational signal from a rotational sensor coupled to the rotatable shaft or the generator, determining a control signal when the rotational signal is outside of a threshold, and, when the activation signal is active and the rotational signal is outside of the threshold, sending the control signal to the inducting unit to regulate a rotational dynamic of the rotatable shaft.

Abstract translation: 电磁制动系统包括耦合到发电系统的可旋转轴的导电盘。 可旋转轴可操作地联接到原动机和发电机。 电磁制动系统还包括感应单元，用于在由控制信号命令时在导电盘上施加电磁制动转矩;以及控制器，用于接收来自激活单元的启动信号，从耦合到所述驱动单元的旋转传感器接收旋转信号 旋转轴或发电机，当所述旋转信号在阈值之外时确定控制信号，并且当所述激活信号有效并且所述旋转信号在所述阈值之外时，将所述控制信号发送到所述感应单元以调节旋转 旋转轴的动态。

公开(公告)号：US11320794B2

公开(公告)日：2022-05-03

申请号：US16615972

申请日：2017-05-23

Applicant: General Electric Company

Inventor： Ara Panosyan ,  Sreedhar Desabhatla ,  Luca Parolini ,  Adolfo Anta Martinez ,  Naresh Acharya ,  Krishna Kumar Anaparthi ,  Scott William Szepek

IPC: G05B19/042 ,  H02J3/38 ,  H02J3/46

Abstract: An electric power system includes a generating unit, which includes a controller for controlling an operational mode of the generating unit. The electric power system also includes an event estimator communicatively coupled to the controller of the generating unit and a network estimator communicatively coupled to the event estimator. The network estimator includes a processor configured to receive status information associated with the electric power system, determine, based upon the status information, at least one characteristic of the electric power system, and transmit the at least one characteristic to the event estimator.

公开(公告)号：US10283962B2

公开(公告)日：2019-05-07

申请号：US14906281

申请日：2013-07-25

Applicant: General Electric Company

Inventor： Ara Panosyan ,  Eva-Maria Baerthlein

IPC: H02J1/10 ,  H02J3/38 ,  H02J7/34 ,  H02J3/18 ,  H02J3/16 ,  G01R21/00

Abstract: A method for compensating self-induced voltage variations includes computing a first reactive power value (Q1), obtaining a voltage value at a point of interconnection (POI) between at least one power source and a power grid, comparing the voltage value with one or more pre-defined voltage limits, computing at least one compensation factor (CF) corresponding to at least one portion of the first reactive power value (Q1) based on an output of the comparison between the voltage value and the one or more pre-defined voltage limits, computing a second reactive power value (Q2) as a function of the at least one portion of the first reactive power value (Q1) and the at least one CF, generating a reactive power compensation command based on the computed second reactive power value (Q2), and transmitting the reactive power compensation command to a power converter.

公开(公告)号：US20170302204A1

公开(公告)日：2017-10-19

申请号：US15098929

申请日：2016-04-14

Applicant: General Electric Company

Inventor： Zhihui Yuan ,  Robert Roesner ,  Stefan Schroeder ,  Ara Panosyan ,  Krishna Kumar Anaparthi

IPC: H02P9/04

CPC classification number: F03D9/257 ,  F03D9/255 ,  H02J3/386 ,  H02P9/04 ,  H02P2101/15

Abstract: This disclosure relates to systems and methods for controlling a wind converter for a weak electrical grid. In one embodiment of the disclosure, a system for controlling the wind converter includes a wind converter connected to an electrical grid at a point of connection (POC) and operable to transfer a power to the electrical grid. The system includes a first control loop operable to calculate, based on electrical grid parameters and wind converter characteristics, a voltage reference to be generated by the wind converter. The system includes a second control loop to convert, based on the electrical grid parameters, the voltage reference into a current reference. The second loop converts the angle information of the voltage reference into a voltage at the POC. The system includes a third control to regulate, based at least on the current reference, the power transferred by the wind converter to the electrical grid.

公开(公告)号：US20170250542A1

公开(公告)日：2017-08-31

申请号：US15054131

申请日：2016-02-26

Applicant: General Electric Company

Inventor： Ara Panosyan ,  Piniwan Thiwanka Bandara Wijekoon ,  Stefan Schroeder ,  Eva-Maria Baerthlein

IPC: H02J4/00

CPC classification number: H02J4/00 ,  H02J3/12

Abstract: A power distribution system for providing a desired value of voltage regulation is presented. The system includes at least one power source, at least one sink, a distribution feeder configured to couple the at least one power source to the at least one sink. The system includes a plurality of modular voltage regulation units coupled to the distribution feeder, where each of the plurality of modular voltage regulation units includes a transformer including a primary winding having a first end and a second end and a secondary winding having a first end and a second end; and at least one switch coupled to the primary winding of the transformer, where the first end of the secondary winding is coupled to at least one of the first and second ends of the primary winding via the at least one switch. A method of operating a power distribution system is also presented.

公开(公告)号：US20170133858A1

公开(公告)日：2017-05-11

申请号：US14935725

申请日：2015-11-09

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yan Pan ,  Martin Samuel Butcher ,  Dong Dong ,  Martin Richard Ingles ,  Christof Martin Sihler ,  Ara Panosyan

IPC: H02J3/38 ,  H02M7/04 ,  H02M3/04

CPC classification number: H02J3/386 ,  H02J3/36 ,  H02J5/00 ,  H02J11/00 ,  H02M3/04 ,  H02M7/04 ,  Y02E60/60

Abstract: A power system for offshore application includes a plurality of power circuits. Each of the power circuit includes an alternating current (AC) bus which supplies power to an auxiliary load and is connected to a generator. The power circuit further includes a first direct current (DC) bus having a first DC voltage supplying power to a first load and a second DC bus having a second DC voltage supplying power to a second load. The power circuit also includes a first DC to DC converter coupled between the first DC bus and the second DC bus, wherein the first DC to DC converter is configured for bidirectional power flow and an AC to DC converter coupled between the AC bus and the first DC bus. The first DC bus of at least one power circuit is coupled to the second DC bus of at least another power circuit with a second DC to DC converter. The system also includes a controller configured to control the operation of the first DC to DC converter, second DC to DC converter and the AC to DC converter for regulating the first and second DC voltages. The controller is further configured to provide power to the second DC bus from the at least one AC to DC converter during a first operating state and from the first DC to DC converter during a second operating state.