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11.发明授权公开(公告)号：US10205414B2
公开(公告)日：2019-02-12
申请号：US15163451
申请日：2016-05-24
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla , Scott William Szepek , Alexis Sesmat , Maxime Buquet
IPC: H02P9/04 , H02J3/00 , H02J3/24 , H02K7/18 , H02P101/00
Abstract: A method may involve monitoring a first set of electrical properties associated with an electrical grid configured to couple to a generator and determining whether a transient event is present on the electrical grid based on the first set of electrical properties. The method may also involve determining a mechanical power present on a shaft of the generator based on a second set of electrical properties associated with the generator, the electrical grid, or both when the transient event is present and sending the mechanical power to a controller associated with a turbine configured to couple to the generator, wherein the controller is configured to adjust one or more operations of the turbine based on the mechanical power.
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公开(公告)号：US20150377057A1
公开(公告)日：2015-12-31
申请号：US14315727
申请日：2014-06-26
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla
CPC classification number: F01D15/10 , F02C9/26 , G05B15/02 , H02J3/24 , H02J3/38 , H02J2003/001 , H02P9/102
Abstract: A method of controlling a power generation system following a transient grid event, and a system and controller to control the power generation system are described. The method includes sensing a rate of change of electrical frequency at terminals of a generator, determining a rate of change of shaft line acceleration, and identifying the transient grid event based on the rate of change of shaft line acceleration. The method also includes triggering an action to recover from the transient grid event when the rate of change of electrical frequency exceeds a first specified value and the rate of change of shaft line acceleration exceeds a second specified value for a specified duration.
Abstract translation: 描述了一种控制瞬时电网事件之后的发电系统的方法，以及用于控制发电系统的系统和控制器。 该方法包括检测发电机端子处的电频率变化率，确定轴线加速度的变化率，以及基于轴线加速度的变化率来识别瞬时电网事件。 该方法还包括当电频率变化率超过第一规定值并且轴线加速度的变化率超过指定持续时间的第二规定值时，触发从瞬态电网事件中恢复的动作。
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公开(公告)号：US20240322703A1
公开(公告)日：2024-09-26
申请号：US18188548
申请日：2023-03-23
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla , John Andrew Leonard
CPC classification number: H02M5/4505 , H02M1/08 , H02M5/451 , H02P27/06
Abstract: A system, including: a plurality of load commutated inverters (LCIs) connected in parallel, wherein each LCI includes: a source bridge for converting an alternating current (AC) voltage to a direct current (DC) voltage, wherein the source bridge includes at least one current switching device; a load bridge for converting the DC voltage from the source bridge to a variable frequency AC voltage; and a DC link coupling the source bridge to the load bridge; wherein each LCI includes a respective current regulator for controlling the at least one current switching device in the source bridge of the LCI to generate a current in the DC link.
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公开(公告)号：US11063539B2
公开(公告)日：2021-07-13
申请号：US16592205
申请日：2019-10-03
Applicant: General Electric Company
Inventor： Luis Fernando Gutierrez , John T. Nguyen , Adnan Fareed Zafar , Yulimar Roa , Jose Carlos Sanchez , Juan Uziel Montoya , Sreedhar Desabhatla , Stephen Roy Bartlett , Maxime Buquet
IPC: H02P9/10 , F01D15/10 , F02C9/28 , H02P9/04 , H02P101/25
Abstract: This application provides methods and systems for rapid load support for grid frequency transient events. Example systems may include a turbine having a first controller, a generator coupled to the turbine, where the generator is configured to provide power to an electrical grid, and an exciter configured to provide a magnetic field in the generator. The exciter may include a second controller configured to monitor a first set of electrical properties associated with the electrical grid, determine that a transient event is present on the electrical grid based on the first set of electrical properties, and send a notification of the transient event to the first controller.
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公开(公告)号：US20150349696A1
公开(公告)日：2015-12-03
申请号：US14288016
申请日：2014-05-27
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Sreedhar Desabhatla , Shashidhar Nibhanupudi
Abstract: A brushless synchronous machine with a limiter for main field voltage and a method of limiting main field voltage in a brushless synchronous machine are described. The machine includes a regulator to use a field current to excite main field windings and generate the main field voltage. The machine also includes a limiter to limit the field current to maintain the main field voltage corresponding to the field current below a limit based on a transfer function.
Abstract translation: 描述了一种具有用于主场电压的限幅器的无刷同步电机和一种限制无刷同步电机中的主电场电压的方法。 该机器包括一个调节器，使用励磁电流来激励主励磁绕组并产生主励磁电压。 该机器还包括限制器，以限制励磁电流，以基于传递函数将与场电流相对应的主电场电压保持在极限以下。
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Patent Agency Ranking
16.发明申请SYSTEMS AND METHODS FOR ADAPTIVE CONTROL OF EXCITATION AND GENERATOR SYSTEMS 有权用于自适应控制激励和发电机系统的系统和方法公开(公告)号：US20150200615A1
公开(公告)日：2015-07-16
申请号：US14157405
申请日：2014-01-16
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla , Adrien Cabarbaye , Julian Bonilla Alarcon , Kate Johannesen
IPC: H02P9/10
Abstract: A system includes an excitation system. The excitation system includes a memory configured to store an adaptive power system stabilizer (PSS) system configured to dynamically stabilize the operation of a generator system, and a processor communicatively coupled to the memory and configured to utilize the adaptive PSS system according to a value for one or more operational parameters of the generator system. The derived value is applied by the processor to operate the generator system when the generator system exhibits oscillations at least one of a plurality of operating frequency ranges associated with an oscillation of a power angle of the generator system. The derived value is configured to attenuate the oscillation of the power angle over the at least one of the plurality of interval operating frequency ranges.
Abstract translation: 系统包括励磁系统。 励磁系统包括被配置为存储被配置为动态稳定发电机系统的操作的自适应电力系统稳定器（PSS）系统的存储器，以及通信地耦合到存储器并被配置为根据用于 发电机系统的一个或多个操作参数。 当发电机系统呈现与发电机系统的功率角的振荡相关联的多个工作频率范围中的至少一个时，发生器系统呈现出振荡，由处理器施加导出值来操作发电机系统。 导出值被配置为衰减在多个间隔操作频率范围中的至少一个上的功率角的振荡。
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公开(公告)号：US12188992B2
公开(公告)日：2025-01-07
申请号：US17969634
申请日：2022-10-19
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla , Malepati Bhavani Sankar , John A. Leonard , Sudeep Pathak
Abstract: A system, in one embodiment, may include a system includes a ground fault detection system. The ground fault detection system includes a linear filter configured to receive one or more signals from a static starter system during operations of the static starter system and to produce a linear filter output. The ground fault detection system further includes a rectifier configured to rectify the linear filter output and to produce a rectifier output, and a gain system configured to multiply the rectifier output by a factor to produce a gain output. The ground fault detection system additionally includes a fault indicator system configured to indicate a ground fault based on the gain output, wherein the ground fault detection system is configured to command an action based on the ground fault.
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18.发明授权公开(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.
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公开(公告)号：US11139764B2
公开(公告)日：2021-10-05
申请号：US15403773
申请日：2017-01-11
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla
IPC: H02P9/10
Abstract: A system includes an excitation system. The excitation system includes a memory that may store an adaptive power system stabilizer (PSS) system that may dynamically stabilize an operation of a generator system. The excitation system also includes a processor communicatively coupled to the memory that may selectively utilize the adaptive PSS system based upon a determination of whether one or more operational parameters of the generator system has met or exceeded a threshold value.
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20.发明授权公开(公告)号：US11056989B1
公开(公告)日：2021-07-06
申请号：US16901072
申请日：2020-06-15
Applicant: General Electric Company
Inventor： Sreedhar Desabhatla
IPC: H02P9/10 , H02P101/25
Abstract: Embodiments of the disclosure provide a method for controlling a power plant. The method may include detecting a transient load on the power plant, and monitoring a system reactance during operation at the transient load. A system reactance of the grid is compared with a switching threshold indicative of a switching event on the set of transmission lines. If the switching threshold is exceeded, the gas turbine operates at the transient load using a first control setting with a transient fuel management profile, a transient split bias profile, and a dynamic intake parameter for the gas turbine. If the switching threshold is not exceeded but one of the electrical properties exceeds a stability threshold, the gas turbine operates at the transient load using a second control setting with the dynamic intake parameter for the gas turbine, and without the transient fuel management profile or the transient split bias profile.
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