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公开(公告)号：US11081891B2
公开(公告)日：2021-08-03
申请号：US15587437
申请日：2017-05-05
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Harold Robert Schnetzka , John Leo Bollenbecker , Govardhan Ganireddy
Abstract: An electrical power system connectable to a power grid includes a cluster of electrical power subsystems, each of the electrical power subsystems including a power converter electrically coupled to a generator having a generator rotor and a generator stator. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid. Each of the electrical power subsystems further includes a transformer. The system further includes a subsystem breaker configured with each of the electrical power subsystems, and a cluster power path extending from each subsystem breaker for connecting the cluster of electrical power subsystems to the power grid. The system further includes a reactive power compensation inverter electrically coupled within the electrical power system, the reactive power compensation inverter operable to increase the reactive power level in the electrical current flowing to the power grid.
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12.发明授权公开(公告)号：US10819103B2
公开(公告)日：2020-10-27
申请号：US15834360
申请日：2017-12-07
Applicant: General Electric Company
Inventor： Rajni Kant Burra , Randal Voges , Saurabh Shukla , Govardhan Ganireddy , Baraa Kadhum
Abstract: A method for isolating faults in an electrical power system connected to a power grid includes dividing the electrical power system into a plurality of power modules each including a plurality of electrical power subsystems and a substation. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid and having a partial power transformer. The method also includes coupling each of the power modules to the power grid via a primary electrical line. Further, the method includes monitoring the electrical power system for faults. In response to detecting a fault in one of the power modules, the method includes isolating the fault to the power module experiencing the fault. In contrast, if the fault is detected in the primary electrical line or the power grid, the method includes tripping the electrical power system.
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公开(公告)号：US10784685B2
公开(公告)日：2020-09-22
申请号：US15588878
申请日：2017-05-08
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Saurabh Shukla , Sumeet Singh Thakur , Robert Gregory Wagoner , Anthony Michael Klodowski , Yashomani Kolhatkar
Abstract: An electrical power subsystem includes a generator comprising a generator stator and a generator rotor, and a power converter electrically coupled to the generator. The power converter includes a plurality of rotor-side converters electrically coupled in parallel, a line-side converter, and a regulated DC link electrically coupling the plurality of rotor-side converters and the line-side converter. The electrical power subsystem further includes a stator power path for providing power from the generator stator to the power grid, and a converter power path for providing power from the generator rotor through the power converter to the power grid.
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14.发明申请公开(公告)号：US20200235577A1
公开(公告)日：2020-07-23
申请号：US16647213
申请日：2017-09-15
Applicant: General Electric Company
Inventor： Rajni Kant Burra , Govardhan Ganireddy , Anthony Michael Klodowski , Wenqiang Yang
Abstract: A method for controlling an electrical power system connected to a power grid includes receiving a reactive power command and a measured reactive power and generating a reactive power error signal based on a difference between the reactive power command and the measured reactive power. Further, the method includes receiving, via a reactive power regulator, the reactive power error signal. Moreover, the method includes generating, via the reactive power regulator, a voltage command based on the error signal. The method also includes generating, via a droop control, a voltage droop signal. In addition, the method includes generating a voltage error signal as a function of the voltage droop signal and at least one of the voltage command or a measured terminal voltage. Thus, the method further includes generating, via a voltage regulator, a reactive current command based on the voltage error signal.
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15.发明申请公开(公告)号：US20200144826A1
公开(公告)日：2020-05-07
申请号：US16181828
申请日：2018-11-06
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Biao Fang , Rajni Kant Burra
Abstract: Systems and methods of wind power generation in electrical power systems are described. According to one aspect, a wind turbine system can include a down tower portion having a main transformer configured to transform medium voltage power to another voltage power, a tower portion having one or more medium voltage cables configured to transmit medium voltage power, and, a nacelle portion. The nacelle portion can include a generator comprising a stator and a rotor. The stator may be connected to one or more medium voltage cables via a stator power path. The nacelle portion also includes a power converter coupled to the rotor of the generator, and, a step-up transformer coupled to the power converter and the one or more medium voltage cables. The step-up transformer can be configured to step-up low voltage power to medium voltage power.
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Patent Agency Ranking
公开(公告)号：US20200088167A1
公开(公告)日：2020-03-19
申请号：US16470205
申请日：2016-12-16
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Rajib Datta
Abstract: A wind farm is presented. The wind farm includes a plurality of wind turbine stations, where each wind turbine station includes a wind turbine and a generator sub-system. The generator sub-system includes a doubly-fed induction generator configured to generate an alternating current voltage and a wind turbine station power converter. The wind farm further includes a power collection sub-system that includes a power bus and a sub-station power converter. The wind farm also includes a control system configured to determine a wind speed metric, estimate a corresponding frequency metric, calculate a desirable frequency based on the wind speed metric and frequency compensation ranges of the wind turbine station power converters, and generate and communicate control commands to the sub-station power converter based on the desirable frequency to allow the sub-station power converter to update a line frequency of a power bus voltage based on the desirable frequency.
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公开(公告)号：US20190280640A1
公开(公告)日：2019-09-12
申请号：US16462066
申请日：2017-11-06
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Yashomani Yashodhan Kolhatkar , Deepak Raj Sagi
Abstract: A method and a system (111) for operating a hybrid power generation system (100) are presented. the hybrid power generation system (100) includes a wind power generation system (102), a wind power controller (104), a photo-voltaic (PV) power generation system, and a PV power controller (108). The method includes determining a hybrid-level power demand of the hybrid power generation system (100). The method further includes determining respective power demand set-points of the wind power generation system (102) and the PV power generation system (106) based at least in part on the hybrid-level power demand. The method also includes communicating the power demand set-points of the wind power generation system (102) and the PV power generation system (106) respectively to at least one of the wind power controller (104) and the PV power controller (108). A farm (300) having a farm level control system (304) is also presented.
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公开(公告)号：US10396695B2
公开(公告)日：2019-08-27
申请号：US15490079
申请日：2017-04-18
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , John Leo Bollenbecker , Rajni Burra , Robert Gregory Wagoner , Anthony Michael Klodowski
Abstract: The present disclosure is directed to a method for protecting an electrical power system connected to a power grid. The electrical power system includes at least one cluster of electrical power subsystems. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid. The converter power path includes a partial power transformer. The electrical power system further includes a subsystem switch configured with each of the electrical power subsystems and a cluster transformer connecting each cluster of electrical power subsystems to the power grid. A cluster switch is configured with the cluster transformer. A controller is communicatively coupled to each of the plurality of electrical power subsystems. Thus, the controller monitors the electrical power system for faults, and if a fault is detected in the cluster, sends, via one of the subsystem switches or the power converters, a block signal to the cluster switch.
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公开(公告)号：US10243352B2
公开(公告)日：2019-03-26
申请号：US15223053
申请日：2016-07-29
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Govardhan Ganireddy , Yashomani Kolhatkar
Abstract: The present disclosure is directed to a protection system for a wind turbine power system connected to a power grid. The protection system includes a main brake circuit having at least one brake resistive element and at least one brake switch element, a battery system, and a controller. The brake resistive element is coupled to at least one of a DC link of a power converter of the wind turbine power system, windings of a rotor of the generator, or windings of a stator of a generator of the wind turbine power system via the brake switch element. The battery system is coupled to the generator via a battery switch element. In addition, the controller is configured to disconnect the power converter and the generator from the power grid and connect at least one of the main brake circuit or the battery system to the generator in response to detecting an electromagnetic (EM) torque loss event so as to generate an EM torque.
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公开(公告)号：US20180323619A1
公开(公告)日：2018-11-08
申请号：US15588878
申请日：2017-05-08
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Saurabh Shukla , Sumeet Singh Thakur , Robert Gregory Wagoner , Anthony Michael Klodowski , Yashomani Kolhatkar
Abstract: An electrical power subsystem includes a generator comprising a generator stator and a generator rotor, and a power converter electrically coupled to the generator. The power converter includes a plurality of rotor-side converters electrically coupled in parallel, a line-side converter, and a regulated DC link electrically coupling the plurality of rotor-side converters and the line-side converter. The electrical power subsystem further includes a stator power path for providing power from the generator stator to the power grid, and a converter power path for providing power from the generator rotor through the power converter to the power grid.
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