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公开(公告)号：US20210203242A1
公开(公告)日：2021-07-01
申请号：US16730301
申请日：2019-12-30
Applicant: General Electric Company
Inventor： Joseph Kiran Banda , Kapil Jha , Hridya Ittamveettil , Arvind Kumar Tiwari
Abstract: A method for controlling a voltage source power converter of a renewable energy power conversion system includes providing the voltage source power converter having, at least, a rotor-side converter and a line-side converter. The method also includes generating, via a converter controller, a first set of switching pulses based on a third-harmonic phase opposition carrier-based pulse width modulation (PO_CB_PWM) scheme. Further, the method includes generating, via the converter controller, a second set of switching pulses based on a third-harmonic in phase carrier-based pulse width modulation (IP_CB_PWM) scheme. As such, the method includes implementing, via the converter controller, a pulse-width modulation scheme for the rotor-side and line-side converters using the first and second sets of switching pulses, respectively, to obtain an output voltage from the voltage source converter to a desired magnitude, shape, and/or frequency.
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公开(公告)号：US10778112B2
公开(公告)日：2020-09-15
申请号：US15944828
申请日：2018-04-04
Applicant: General Electric Company
Inventor： Govardhan Ganireddy , Harold Robert Schnetzka , Robert Gregory Wagoner , Amy Marlene Ridenour , Kapil Jha , Yashomani Y. Kolhatkar , Arvind Kumar Tiwari
IPC: H02M5/458 , H02P9/00 , F03D9/25 , H02M1/12 , H02M7/493 , H02P101/15 , H02K7/18 , H02M7/219 , H02M1/00 , H02M7/5387 , H02M7/23
Abstract: An electrical power system connected to a power grid can include a generator having a stator and a rotor and a power converter. The stator is connected to the power grid via a stator power path. The power converter can include a line-side converter coupled to the power grid via a converter power path and a rotor-side converter coupled to a rotor bus of the rotor and the line-side converter via a DC link. The rotor-side converter is configured to convert a DC power on the DC link to an AC signal for the rotor bus. The power system can also include an active filter having one or more active controlled components. The active filter is coupled in parallel with the rotor-side converter to reduce harmonics of the electrical power system.
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公开(公告)号：US10731630B2
公开(公告)日：2020-08-04
申请号：US15861063
申请日：2018-01-03
Applicant: General Electric Company
Abstract: A control method for increasing reactive power generation of a wind turbine having a Doubly-Fed Induction Generator (DFIG) includes obtaining, by a control device having one or more processors and one or more memory devices, wind forecast data of the wind turbine. Further, the method includes generating, by the control device, a real-time thermal model of the DFIG of the wind turbine using the wind forecast data. More specifically, the thermal model defines a thermal capacity for the DFIG that does not exceed system limits. Thus, the method also includes dynamically adjusting, by the control device, a reactive power set point of the DFIG of the wind turbine based on the real-time thermal model.
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公开(公告)号：US10731628B1
公开(公告)日：2020-08-04
申请号：US16403789
申请日：2019-05-06
Applicant: General Electric Company
Inventor： Kasi Viswanadha Raju Gadiraju , Olive Ray , Yashomani Yashodhan Kolhatkar , Arvind Kumar Tiwari
Abstract: A method is provided for operating a power generation system that supplies real and reactive power to a grid, the power generation system including a generator/power converter, and a reactive power compensation device. A total reactive power demand (Qcmd) made on the power generation system is determined , as well as a maximum reactive power capacity for each of a generator stator-side reactive power (Qs), a generator line-side reactive power (Ql), and reactive power from the reactive power compensation device (Qmvb). Allocation of (Qs), (Ql), and (Qmvb) to supply (Qcmd) is coordinated by prioritizing (Qmvb) as a first source of reactive power, and one or both of (Qs) and (Ql) as a second source of reactive power.
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公开(公告)号：US10581247B1
公开(公告)日：2020-03-03
申请号：US16403751
申请日：2019-05-06
Applicant: General Electric Company
Inventor： Yashomani Yashodhan Kolhatkar , Olive Ray , Kasi Viswanadha Raju Gadiraju , Arvind Kumar Tiwari
Abstract: A method and associated system for operating a power generation to supply real and reactive power to a grid includes determining a total reactive power demand made on the system during a first, stable grid state. A first reactive power portion of the reactive power demand is supplied by a generator, and a second reactive power portion is supplied by a reactive power compensation device, wherein the second reactive power portion may be greater than the first reactive power portion. Upon detection of a grid fault, the first reactive power portion is increased and the second reactive power portion is decreased.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20200052493A1
公开(公告)日：2020-02-13
申请号：US16523432
申请日：2019-07-26
Applicant: General Electric Company
Inventor： Yashomani Y. Kolhatkar , Jayanti Ganesh , Zhuohui Tan , Arvind Kumar Tiwari
Abstract: The present application relates to a method for controlling a power system connected to a power grid, including: receiving a reactive power instruction and a measured reactive power from a generator; generating a reactive power error signal based on the difference between the reactive power instruction and the measured reactive power; receiving the reactive power error signal; generating a voltage instruction based on reactive power error signal; generating a voltage droop signal based on a reference reactance and a voltage at a point of common coupling; generating a voltage error signal according to at least one of the voltage instruction or the measured terminal voltage of the generator and the voltage droop signal; and producing a reactive current instruction for the converter power path based on the voltage error signal. The present application also discloses a control system for a power system connected to a power grid and a wind farm.
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公开(公告)号：US20190203693A1
公开(公告)日：2019-07-04
申请号：US15861063
申请日：2018-01-03
Applicant: General Electric Company
Abstract: A control method for increasing reactive power generation of a wind turbine having a Doubly-Fed Induction Generator (DFIG) includes obtaining, by a control device having one or more processors and one or more memory devices, wind forecast data of the wind turbine. Further, the method includes generating, by the control device, a real-time thermal model of the DFIG of the wind turbine using the wind forecast data. More specifically, the thermal model defines a thermal capacity for the DFIG that does not exceed system limits. Thus, the method also includes dynamically adjusting, by the control device, a reactive power set point of the DFIG of the wind turbine based on the real-time thermal model.
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公开(公告)号：US10079485B2
公开(公告)日：2018-09-18
申请号：US14918950
申请日：2015-10-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Amol Rajaram Kolwalkar , Arvind Kumar Tiwari , Rajendra Naik , Sanjay Vijayaraghavan
IPC: H02J9/00 , H01F1/00 , H01F3/00 , H02J3/30 , H02H7/06 , H02K7/18 , H02J11/00 , H02J3/00 , H02P9/00 , H02J3/18 , H02J3/32
CPC classification number: H02H7/067 , H02J3/00 , H02J3/18 , H02J3/32 , H02J11/00 , H02J2003/001 , H02K7/1823 , H02P9/006 , Y02E40/30
Abstract: A power generation system is provided. The system includes a prime mover for transforming a first energy to a second energy. The system also includes an induction generator operatively coupled to the prime mover and configured to generate electrical power using the second energy. The system further includes an inverter electrically coupled to the induction generator for controlling a terminal voltage of the induction generator during a grid-loss condition. The system also includes a power dissipating device operatively coupled to the inverter for dissipating power generated by the induction generator during the grid-loss condition.
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公开(公告)号：US10008857B2
公开(公告)日：2018-06-26
申请号：US15066133
申请日：2016-03-10
Applicant: General Electric Company
Inventor： Yashomani Y. Kolhatkar , Silvio Colombi , Arvind Kumar Tiwari
CPC classification number: H02J3/40 , H02J9/066 , H02J9/08 , H02P9/007 , H02P9/04 , H02P9/08 , Y02P80/11
Abstract: An uninterruptable power supply (UPS) system for providing power to a load coupled to a utility power source is provided. The UPS system includes a doubly-fed induction generator (DFIG), a rechargeable energy storage system, a first inverter, and a controller in communication with the DFIG and the first inverter. The DFIG includes a stator and a rotor coupled to the load. The stator and rotor are magnetically coupled together. The DFIG generates an auxiliary power output. The first inverter is coupled between the rotor and the rechargeable energy storage system. The controller detects a power disturbance associated with the utility power source and controls the first inverter to provide an excitation input to the rotor in response to the power disturbance. The DFIG provides the auxiliary power output to the load based on the excitation input.
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公开(公告)号：US12074530B2
公开(公告)日：2024-08-27
申请号：US16676192
申请日：2019-11-06
Applicant: General Electric Company
Inventor： Lijun He , Honggang Wang , Alexandre Lagarde , Virginie Peron , Raphael de Rocca-Serra , Arvind Kumar Tiwari , Liwei Hao
CPC classification number: H02M5/458 , F03D9/255 , G01R31/2617 , G01R31/2642 , G05B13/04 , G05B23/0283 , H02J3/381 , H02J2300/28
Abstract: A method of operating a wind converter is provided. The method includes receiving a plurality of forecasted datasets. The forecasted datasets include event signals for the wind converter during fast transient operating conditions (OCs) and operational data for the wind converter having a low sampling rate. The method further includes estimating a converter life consumption during normal OCs and a converter life consumption during the fast transient OCs. Further, the method includes computing a total converter life consumption of the wind converter. Moreover, the method includes predicting, using a remaining useful life (RUL) prediction module, an RUL for the wind converter based on the total converter life consumption. The method further includes adjusting operation of the wind converter by adjusting operating variables of the wind converter.
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