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1.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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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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公开(公告)号：US20180198376A1
公开(公告)日：2018-07-12
申请号：US15399817
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Ravisekhar Nadimpalli Raju , Harold Robert Schnetzka
CPC classification number: H02M5/458 , H02H7/1216 , H02M1/32 , H05K7/20445
Abstract: Systems and methods for grounding power generation units with silicon carbide MOSFET power converters are provided. A power generation unit can include a power generator configured to generate multiphase alternating current power at a first voltage. The power generation unit can also include a power converter configured to convert the multiphase alternating current power from the power generator at the first voltage to multiphase alternating current power at a second voltage. The power converter can include one or more silicon carbide MOSFETs and at least one heatsink configured to remove heat from the power converter. The at least one heatsink of the power converter can be electrically connected to a local ground formed by one or more components of the power generation unit.
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公开(公告)号：US20180191280A1
公开(公告)日：2018-07-05
申请号：US15399049
申请日：2017-01-05
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Rajni Kant Burra , Ravisekhar Nadimpalli Raju , Rui Zhou , Rajib Datta , John Leo Bollenbecker
CPC classification number: H02P9/007 , F03D9/25 , F03D9/255 , H02M3/335 , H02M3/33576 , H02M3/337 , H02M5/4585 , H02M2001/0077 , Y02E10/725
Abstract: Power converters for use in wind turbine systems are included. For instance, a wind turbine system can include a wind driven doubly fed induction generator having a stator and a rotor. The stator is configured to provide a medium voltage alternating current power on a stator bus of the wind turbine system. The wind turbine system includes a power converter configured to convert a low voltage alternating current power provided by the rotor to a medium voltage multiphase alternating current output power suitable for provision to an electrical grid. The power converter includes a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the wind turbine system.
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Patent Agency Ranking
公开(公告)号：US20180342875A1
公开(公告)日：2018-11-29
申请号：US15602193
申请日：2017-05-23
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Saurabh Shukla , Rajni Burra , Steven Wade Sutherland
Abstract: An electrical power system 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, the converter power path including a partial power transformer. Each of the electrical power subsystems further includes a low voltage distribution panel electrically coupled to the converter power path, a first switch on the stator power path, and a second switch on the converter power path.
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公开(公告)号：US20180323620A1
公开(公告)日：2018-11-08
申请号：US15588902
申请日：2017-05-08
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Saurabh Shukla , Rajni Burra , Robert Gregory Wagoner , Anthony Michael Klodowski , Yashomani Kolhatkar
Abstract: An electrical power system 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. The converter power path includes a partial power transformer. The electrical power system further includes a subsystem breaker configured with each of the electrical power subsystems, and a cluster transformer for connecting each cluster of electrical power subsystems to the power grid. The electrical power system further includes a cluster power path extending between each subsystem breaker and the cluster transformer, and a distortion filter electrically coupled to the cluster transformer. The distortion filter reduces harmonics in current flowing from the electrical power subsystems to the cluster transformer.
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公开(公告)号：US10110149B2
公开(公告)日：2018-10-23
申请号：US15399803
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Ravisekhar Nadimpalli Raju , Harold Robert Schnetzka
Abstract: Systems and methods for grounding power generation systems with silicon carbide MOSFET power converters are provided. A power generation system can include a power generator comprising a multiphase rotor configured to generate multiphase alternating current power at a first voltage and a power converter comprising one or more silicon carbide MOSFETs and an isolation transformer. The power converter can be configured to convert the multiphase alternating current power from the power generator at the first voltage to multiphase alternating current power at a second voltage. The power generation system can be electrically grounded to shunt a leakage current associated with the isolation transformer of the power converter to a ground.
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公开(公告)号：US10554044B2
公开(公告)日：2020-02-04
申请号：US15866601
申请日：2018-01-10
Applicant: General Electric Company
Inventor： Rajni Kant Burra , Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla
Abstract: A method for optimizing reactive power generation of an electrical power system includes generating, via a plurality of cluster-level controllers, a cluster-level reactive power command for each cluster of electrical power subsystems based on a system-level reactive power command. The method also includes determining, via the cluster-level controllers, a subsystem-level reactive power command for each of the electrical power subsystems based on the cluster-level reactive power command. Further, the method includes evaluating, via a plurality of subsystem-level controllers, reactive power capability of a plurality of reactive power sources within each of the electrical power subsystems. Moreover, the method includes generating, via each of the subsystem-level controllers, an actual reactive power for each of the electrical power subsystems based on the evaluation by allocating a portion of the subsystem-level reactive power command to each of the plurality of reactive power sources.
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公开(公告)号：US20190214821A1
公开(公告)日：2019-07-11
申请号：US15866601
申请日：2018-01-10
Applicant: General Electric Company
Inventor： Rajni Kant Burra , Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla
Abstract: A method for optimizing reactive power generation of an electrical power system includes generating, via a plurality of cluster-level controllers, a cluster-level reactive power command for each cluster of electrical power subsystems based on a system-level reactive power command. The method also includes determining, via the cluster-level controllers, a subsystem-level reactive power command for each of the electrical power subsystems based on the cluster-level reactive power command. Further, the method includes evaluating, via a plurality of subsystem-level controllers, reactive power capability of a plurality of reactive power sources within each of the electrical power subsystems. Moreover, the method includes generating, via each of the subsystem-level controllers, an actual reactive power for each of the electrical power subsystems based on the evaluation by allocating a portion of the subsystem-level reactive power command to each of the plurality of reactive power sources.
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