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公开(公告)号：US11952981B2
公开(公告)日：2024-04-09
申请号：US17703727
申请日：2022-03-24
Applicant: Wobben Properties GmbH
Inventor： Nils Noffke , Uli Krause , Tilko Nietsch
IPC: F03D7/02 , F03D9/25 , F03D15/20 , H02P9/04 , H02P101/15
CPC classification number: F03D7/0276 , F03D9/25 , F03D15/20 , H02P9/04 , H02P2101/15
Abstract: Provided is a method for controlling a wind power installation, the wind power installation having a generator for the generation of electric current, the generator having an air gap with a variable air gap thickness, the wind power installation being controlled in a part load range by means of a control regulation, the wind power installation being controlled in a manner which is dependent on the air gap thickness, the control regulation being selected or set in a manner which is dependent on the air gap width.
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公开(公告)号：US20190219025A1
公开(公告)日：2019-07-18
申请号：US16364074
申请日：2019-03-25
Applicant: EIP TECHNOLOGIES, INC.
Inventor： Steve Burkle
CPC classification number: F03B13/12 , F03B13/10 , F03B13/142 , F03B13/1845 , F03B13/24 , F03B15/00 , F05B2220/7068 , H02K35/02 , H02P9/04 , Y02E10/32 , Y02E10/38
Abstract: Methods, systems, and devices are disclosed for wave power generation. In one aspect, a wave power generator device includes a stator assembly and a rotor assembly encased within a tube frame. The stator assembly includes an array of inductor coils in a fixed position within a cavity of the tube frame and a plurality of bearings coupled to the tube frame. The rotor assembly includes a turbine rotor having a central hub and peripheral blades coupled to a high inertia annular flywheel that is moveably engaged with the bearings of the stator assembly, and an array of magnets arranged to be evenly spaced and of alternating axial polarity from one another extending from the annular flywheel into the cavity between the array of inductor coils, such that electric currents are produced based on magnetic field interaction of the magnets with the inductor coils during the rotation of the annular flywheel.
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公开(公告)号：US20190195141A1
公开(公告)日：2019-06-27
申请号：US16328009
申请日：2017-08-30
Applicant: Mitsubishi Hitachi Power Systems, Ltd.
Inventor： Naoyuki NAGAFUCHI , Toshimitsu MORIMOTO , Kazuo TAKAHASHI , Hironori TSUKIDATE
CPC classification number: F02C7/36 , F01D15/10 , F01D15/12 , F02C3/10 , F02C6/00 , F02C7/26 , F02C7/275 , F05D2220/76 , F05D2260/4031 , F05D2260/85 , H02P9/04
Abstract: Provided is a two-shaft gas turbine power generation equipment that includes: an induction motor which receives/transmits power from/to a power system; and a speed reducer that makes a rotational speed of a motor rotor of the induction motor lower than a rotational speed of a compressor rotor of a two-shaft gas turbine. The speed reducer includes: a compressor-side shaft; a motor-side shaft; a first compressor-side helical gear and a second compressor-side helical gear which are mounted on the compressor-side shaft; and a first motor-side helical gear and a second motor-side helical gear which are mounted on the motor-side shaft. The first compressor-side helical gear meshes with the first motor-side helical gear, and the second compressor-side helical gear meshes with the second motor-side helical gear.
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公开(公告)号：US20190052208A1
公开(公告)日：2019-02-14
申请号：US15675694
申请日：2017-08-11
Applicant: Rolls-Royce North American Technologies Inc.
Inventor： Keith D. Noderer
CPC classification number: H02P9/04 , F02C9/00 , F02C9/28 , F05D2270/024 , F05D2270/061 , H02P9/10
Abstract: A system includes a first controller configured to control a gas turbine to operate at a constant speed set point and a variable torque output to drive a generator. A DC to DC converter may operate as a load on a power source bus supplied by the generator. A second controller may limit a rate of change of the DC output power of the DC to DC converter during intermittent supply of a transient step change load subsequent to receipt of a transient load control signal. The transient load control signal is anticipatory of application of the transient step change load to the load bus. The rate of change is limited by the second controller to maintain the variable torque of the gas turbine below a predetermined threshold as a load ramp rate of the DC to DC converter changes on the power source bus.
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公开(公告)号：US20180298777A1
公开(公告)日：2018-10-18
申请号：US15486848
申请日：2017-04-13
Applicant: General Electric Company
Inventor： Tho V. Nguyen , Douglas Jones , Harley M. Ross , Vineet Sethi , Tuy C. Huynh
IPC: F01D15/10 , F02C3/04 , F02C9/26 , F02C7/06 , F02C7/32 , F01D15/08 , H02P9/04 , H02P9/30 , F02C7/27 , F01D25/20
CPC classification number: F01D15/10 , F01D15/08 , F01D25/20 , F02C3/04 , F02C7/06 , F02C7/27 , F02C7/32 , F02C9/26 , F05D2220/32 , F05D2240/35 , F05D2240/60 , H02P9/04 , H02P9/30
Abstract: The present application provides a power generation system. The power generation system may include a core turbine positioned about a core rotor shaft, a power turbine positioned about a power rotor shaft, a synchronous generator including a generator rotor shaft coupled to the power rotor shaft for rotation therewith, and an electronic controller in operable communication with the synchronous generator. The synchronous generator may be configured to generate reactive power for or absorb reactive power from an electric power grid when the power generation system operates in a reactive power mode. The electronic controller may be operable to cause the core rotor shaft to rotate when the power generation system operates in the reactive power mode.
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公开(公告)号：US20180274335A1
公开(公告)日：2018-09-27
申请号：US15468197
申请日：2017-03-24
Applicant: Husky Oil Operations Limited
Inventor： Skyler Jonathan Hudson
CPC classification number: H02P9/04 , E21B43/121 , F02D19/027 , F02D29/04 , F02D29/06 , F02D31/001 , F02D41/0027 , F02D2200/0406 , F02D2200/0602 , F02D2250/24 , H02K7/1815
Abstract: Systems and methods for reducing produced gas venting from a hydrocarbon well, in which the engine driving the pump burns produced gas from the well, the engine made to increase its throttle to burn more gas in response to an increased gas pressure indicator, and an external load such as a generator directed to increase the load on the engine and maintain the engine operating within a desired revolutions-per-minute range to avoid redline condition.
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公开(公告)号：US10079564B2
公开(公告)日：2018-09-18
申请号：US14585950
申请日：2014-12-30
Inventor： Richard A. Huntington , Karl Dean Minto , Bin Xu , Jonathan Carl Thatcher , Aaron Lavene Vorel
CPC classification number: H02P9/04 , E21B43/166 , F01D17/02 , F02C3/30 , F02C6/00 , F02C9/28 , F02C9/48 , F05D2220/32 , F05D2270/05 , F05D2270/08 , F05D2270/082 , H02K7/1823 , Y02E20/16 , Y02T50/677
Abstract: A non-transitory, computer readable medium stores instructions executable by a processor of an electronic device. The instructions include instructions to determine that a transient event is occurring in an electrical grid coupled to an EGR gas turbine system, wherein the transient event is an under-frequency or an under-voltage event. The instructions also include instructions to increase a flow rate of fuel to a combustor of the EGR gas turbine system in response to the transient event when the EGR gas turbine system is operating in a non-stoichiometric combustion mode. The instructions further include instructions to increase a flow rate of oxidant to the combustor before increasing the flow rate of fuel to the combustor, or to decrease a local consumption of the electrical power to increase a portion of the electrical power that is exported to the attached electrical grid, or both, in response to the transient event when the EGR gas turbine system is operating in a stoichiometric combustion mode.
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公开(公告)号：US20180258845A1
公开(公告)日：2018-09-13
申请号：US15915877
申请日：2018-03-08
Applicant: The Government of the United States of America, as represented by the Secretary of Homeland Security
Inventor： Shane R.J. Rainey , Thomas C. Rodzewicz , Julian J. Blanco , Ryan T. Ostrander
IPC: F02B63/04 , F02B1/14 , F02D13/02 , F02D41/14 , F02D41/30 , F02B75/24 , F02B47/02 , F02N11/04 , H02K7/18 , H02P9/04
CPC classification number: F02B63/041 , F01B11/004 , F01B11/02 , F02B1/14 , F02B47/02 , F02B71/00 , F02B75/24 , F02B2075/1808 , F02D13/0215 , F02D15/00 , F02D41/009 , F02D41/1443 , F02D41/3035 , F02D41/34 , F02D2041/001 , F02D2200/021 , F02D2200/024 , F02M25/025 , F02M25/03 , F02N11/04 , H02K7/1884 , H02P9/00 , H02P9/04 , H02P25/06
Abstract: A homogeneous charge compression ignition free-piston linear generator is disclosed. The linear generator includes a housing having cylinders at opposite ends. A double-ended piston assembly is to move linearly in the housing to convert kinetic energy of the piston assembly into electrical energy, and to enable conversion of electrical energy into kinetic energy of the piston assembly. Sensors measure one or more states of the cylinders and/or piston assembly, and a controller controls the linear generator based on the sensor data.
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公开(公告)号：US09998045B2
公开(公告)日：2018-06-12
申请号：US15863503
申请日：2018-01-05
Applicant: Kohler Co.
Inventor： Isaac S. Frampton , Adam Larson , Richard Van Maaren
CPC classification number: H02P9/00 , H02K7/1815 , H02P9/009 , H02P9/04 , H02P9/14 , H02P9/302 , H02P9/48 , H02P2101/45
Abstract: In one embodiment, a generator includes a rotor configured to rotate in cooperation with a stator to generate electrical power. A sensor, which is supported by the rotor, is configured to generate a trigger signal indicative of a position of the rotor. A communication interface is configured to receive the trigger signal from the sensor of the rotor and receive data indicative of an output of the generator. A controller supported by the rotor or configured to perform a phase analysis of the trigger signal and the output of the generator and calculate a power angle for the generator based on the phase analysis.
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公开(公告)号：US09996991B2
公开(公告)日：2018-06-12
申请号：US15490961
申请日：2017-04-19
Applicant: YAMAHA MOTOR POWER PRODUCTS KABUSHIKI KAISHA
Inventor： Koichi Taketomi , Keisuke Sugiura , Shinichi Suzuki
IPC: G01R31/34 , G07C5/08 , F02B63/04 , F02D41/22 , G01R19/165 , H02P9/04 , F02D17/04 , F02D29/06 , H02P29/024
CPC classification number: G07C5/0808 , F02B63/048 , F02D17/04 , F02D29/06 , F02D41/22 , G01R19/165 , G01R31/34 , H02P9/04 , H02P29/024
Abstract: An engine generator includes a generator body connected to an engine, a converter including rectifiers that convert an output from the generator body to DC current, an inverter that converts an output from the converter to AC current, an input voltage detector that detects an input voltage from the generator body to the converter, and an AC current detector that detects an AC current output from the inverter. An abnormality in the engine generator is determined if a state that a current detected by the AC current detector is not higher than a first threshold value and a duty ratio of a voltage detected by the input voltage detector is not higher than the second threshold value continues for a first predetermined time; or if the current detected by the AC current detector is not higher than a third threshold value and the duty ratio change rate is not higher than a fourth threshold value.
