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公开(公告)号：US20180306169A1
公开(公告)日：2018-10-25
申请号：US15494661
申请日：2017-04-24
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , Robert Roesner
Abstract: Systems and methods for operating an energy storage system in a wind turbine system are provided. A wind turbine system can include a wind turbine, a power conversion system operably coupled to the wind turbine and an AC line bus, and an energy storage system coupled to the AC line bus. The energy storage system can include a transformer, a power converter, and an energy storage device and can be configured to store and provide power generated by the wind turbine. The method can include operating the wind turbine system to generate power, determining one or more operating parameters for the wind turbine system, determining an operating mode based on the one or more operating parameters, and controlling the wind turbine system based at least in part on the operating mode. Controlling the wind turbine can control a power flow into or out of the energy storage system.
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公开(公告)号：US20180183370A1
公开(公告)日：2018-06-28
申请号：US15391124
申请日：2016-12-27
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari
CPC classification number: H02P9/08 , F03D7/0244 , F05B2260/903 , H02K7/183 , H02K11/046 , H02K17/42 , H02P9/007
Abstract: Systems and methods to provide for the controlled braking of a generator (e.g., a doubly-fed induction generator (DFIG)) in a wind power system are provided. In one example implementation, a method for braking a wind-driven doubly fed induction generator can include: receiving, by one or more control devices, a command to brake a wind-driven doubly fed induction generator; and generating, by the one or more control devices, a pulse width modulation scheme for the rotor side converter to provide a rotor side output to a rotor of the doubly-fed induction generator. The rotor side output includes a non-zero DC component and an AC component. The method includes controlling, by the one or more control devices, the rotor side converter in accordance with the pulse width modulation scheme. The non-zero DC component of the rotor side output can reduce a speed of rotation of the wind-driven doubly fed induction generator.
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公开(公告)号：US20180372072A1
公开(公告)日：2018-12-27
申请号：US15629879
申请日：2017-06-22
Applicant: General Electric Company
Inventor： Darren John Danielsen , Jeffrey Alan Melius , Parag Rameshchandra Dharmadhikari , Ryan Michael Sunyak
Abstract: Systems and methods for providing power to a blade pitch system in a wind turbine are provided. A blade pitch system can include one or more motors configured to pitch one or more blades of a wind turbine and a power source. The power source can include a plurality of energy storage devices coupled in series. The plurality of energy storage devices can be configured to provide power to the one or more motors during a power loss event. The power source can further include at least one bypass current device configured to allow a bypass current to provide power from at least one energy storage device to the one or more motors. The bypass current can be a current that bypasses one or more failed energy storage devices in the plurality of energy storage devices.
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公开(公告)号：US20190326773A1
公开(公告)日：2019-10-24
申请号：US15961008
申请日：2018-04-24
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , Robert Roesner
Abstract: The present disclosure is directed to an energy storage system including a power source and a power converter coupled to the power source. The power converter is configured to output power suitable for consumption in a utility grid. The energy storage system also includes an energy storage device configured to receive the power output from the power converter and a charge discharge converter coupled between the power converter and the energy storage device. The charge discharge converter is configured to control at least one of charging or discharging the energy storage device. Furthermore, the energy storage device includes a transformer coupled between the charge discharge converter and the power converter.
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公开(公告)号：US10063172B2
公开(公告)日：2018-08-28
申请号：US15391124
申请日：2016-12-27
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari
CPC classification number: H02P9/08 , F03D7/0244 , F05B2260/903 , H02K7/183 , H02K11/046 , H02K17/42 , H02P9/007 , Y02E10/723 , Y02E10/725
Abstract: Systems and methods to provide for the controlled braking of a generator (e.g., a doubly-fed induction generator (DFIG)) in a wind power system are provided. In one example implementation, a method for braking a wind-driven doubly fed induction generator can include: receiving, by one or more control devices, a command to brake a wind-driven doubly fed induction generator; and generating, by the one or more control devices, a pulse width modulation scheme for the rotor side converter to provide a rotor side output to a rotor of the doubly-fed induction generator. The rotor side output includes a non-zero DC component and an AC component. The method includes controlling, by the one or more control devices, the rotor side converter in accordance with the pulse width modulation scheme. The non-zero DC component of the rotor side output can reduce a speed of rotation of the wind-driven doubly fed induction generator.
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Patent Agency Ranking
公开(公告)号：US20170214251A1
公开(公告)日：2017-07-27
申请号：US15002637
申请日：2016-01-21
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , David Ray Hudnall
CPC classification number: H02K7/183 , H01M10/0525 , H01M10/44 , H01M10/46 , H01M16/00 , H01M2220/10 , H02J3/32 , H02J3/386 , H02J7/0013 , H02J7/0068 , Y02E10/763 , Y02E10/766 , Y02E60/122 , Y02E70/30
Abstract: In one embodiment, an energy storage system includes a plurality of energy storage banks. The plurality of energy storage banks include a first set of one or more energy storage banks and a second set of one or more energy storage banks. The first set of the energy storage banks is associated with a faster charge/discharge rate relative to the second set of energy storage banks. The energy storage system includes at least one control device that is configured to control the first set of energy storage banks to accept or discharge energy in response to fluctuations in a power signal associated with a first frequency; and is further configured to control the second set of energy storage banks to accept or discharge energy in response to fluctuations in the power signal associated with a second frequency. The first frequency is greater than the second frequency.
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公开(公告)号：US11025083B2
公开(公告)日：2021-06-01
申请号：US15961008
申请日：2018-04-24
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , Robert Roesner
Abstract: The present disclosure is directed to an energy storage system including a power source and a power converter coupled to the power source. The power converter is configured to output power suitable for consumption in a utility grid. The energy storage system also includes an energy storage device configured to receive the power output from the power converter and a charge discharge converter coupled between the power converter and the energy storage device. The charge discharge converter is configured to control at least one of charging or discharging the energy storage device. Furthermore, the energy storage device includes a transformer coupled between the charge discharge converter and the power converter.
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公开(公告)号：US10788538B2
公开(公告)日：2020-09-29
申请号：US15701987
申请日：2017-09-12
Applicant: General Electric Company
Inventor： Jeffrey Alan Melius , Darren John Danielsen , Parag Rameshchandra Dharmadhikari , Christopher Lee Tschappatt
IPC: G01R31/392 , H01M10/44 , G01R31/389 , G01R31/36 , G01R31/385 , H01M10/48 , H02J11/00
Abstract: Apparatus, systems, and methods are provided for determining remaining lifetime of a battery, such as a battery used to power a pitch drive system in a wind turbine. In one example implementation, a method can include controlling a discharge of the battery through a load. The method can include obtaining data indicative of a discharge voltage and a discharge current of the battery during discharge through the load. The method can include obtaining data indicative of a temperature associated with the battery during discharge through the load. The method can include determining data indicative of remaining lifetime of the battery as a function of the discharge voltage, discharge current, and the temperature. The method can include performing at least one control action based at least in part on the data indicative of remaining lifetime of the battery.
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公开(公告)号：US20200263665A1
公开(公告)日：2020-08-20
申请号：US16275685
申请日：2019-02-14
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , Martin Stettner
Abstract: A system and method for protecting an idling wind turbine power system from damage during loss of grid power. The wind turbine power system has a plurality of rotor blades. The method includes monitoring an incoming wind direction at the wind turbine power system. When the incoming wind direction is changing at a predetermined attack angle, the method also includes rotating at least one of the rotor blades of the wind turbine power system to a pitch angle that is offset from a feather position by a predetermined number of degrees to reduce and/or eliminate flutter phenomenon from occurring.
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公开(公告)号：US10523088B2
公开(公告)日：2019-12-31
申请号：US15494642
申请日：2017-04-24
Applicant: General Electric Company
Inventor： Parag Rameshchandra Dharmadhikari , Robert Roesner
Abstract: Systems and methods for operating an energy storage system in a doubly fed induction generator wind turbine system are provided. An energy storage system can include a transformer configured to transform AC power from a first voltage to AC power at a second voltage and a bi-directional AC to DC power converter coupled to the transformer. The bi-directional AC to DC power converter can be configured to convert the AC power at the second voltage to a DC power. The energy storage system can further include an energy storage device coupled to the bi-directional AC to DC power converter. The energy storage system can be configured to receive power generated by a rotor of the DFIG via an AC line bus. The energy storage device can be configured to store the power received by the energy storage system.
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