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公开(公告)号：US20240097588A1
公开(公告)日：2024-03-21
申请号：US17817535
申请日：2022-08-04
申请人： Google LLC
摘要： The present disclosure contemplates a method for synchronizing a large number of generators on an AC bus by synchronizing each generator's output to a nominal output that is generated from a common external source. For example, each generator, using a high speed communication signal, can synchronize to a nominal output provided by a master generator, or centralized command module. In another example, each generator can generate its own nominal output referenced to a common external time signal, such as a global positioning system (GPS) signal, or other reference. By synchronizing independently of bus voltage and frequency, the generators are able to synchronize in parallel, instead of serially.
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公开(公告)号：US20230228250A1
公开(公告)日：2023-07-20
申请号：US18056818
申请日：2022-11-18
CPC分类号： F03D17/00 , F03D15/00 , H02P9/006 , H02P9/06 , F05B2260/80 , H02P2101/15
摘要： A wind power generation device includes a blade, a main shaft of which one end is connected to the blade, a speed increaser connected to the other end of the main shaft, an output shaft of which one end is connected to the speed increaser, a power generation unit connected to the other end of the output shaft, a vibration sensor, and an abnormality diagnosis unit. The power generation unit is configured to rotate the output shaft and the main shaft by performing powering operation. The abnormality diagnosis unit diagnoses the presence or absence of an abnormality based on data acquired by the vibration sensor during a period in which the power generation unit performs powering operation.
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公开(公告)号：US11329583B2
公开(公告)日：2022-05-10
申请号：US17118086
申请日：2020-12-10
申请人： Weizhong Feng
发明人： Weizhong Feng
IPC分类号： H02P9/42 , H02P9/06 , F01D15/10 , F01D15/12 , H02P101/20
摘要： A generalized frequency conversion system for a steam turbine generator unit. The system comprises at least a variable speed steam turbine with an adjustable rotating speed, a water feeding pump, a variable frequency generator operating at a variable speed, a speed increasing gearbox with a fixed rotating speed ratio, a variable frequency bus and an auxiliary machine. With a change in load of the unit, parameters of steam entering the variable speed steam turbine and an extracted steam amount are adjusted (changed) accordingly, so that the rotating speed of the steam turbine changes accordingly. In this way, on one hand, the rotating speed of the water feeding pump is changed through the speed increasing gearbox; and on the other hand, the frequency of alternating current outputted by the variable frequency generator is changed. In the present invention, there is no need to additionally provide other types of frequency converters, and the system is simple, reliable, low in cost and high in efficiency.
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公开(公告)号：US11128245B2
公开(公告)日：2021-09-21
申请号：US16757692
申请日：2018-10-16
发明人： Yusuke Umezu , Kazushige Sugimoto , Soichiro Bando , Naoki Yamaguchi , Kenichi Sakimoto , Kiyoshi Kimura , Suguru Takayama , Takato Uda
IPC分类号： H02P9/06 , H02J3/48 , H02J1/12 , H02P101/30 , B64D47/00
摘要： At least one of a plurality of generators is a first generator configured such that a relationship of a generator output voltage with respect to a generator active power output from the generator to a corresponding first AC wiring portion has a predetermined first drooping characteristic. The control device is configured to generate a drive signal for a power conversion device by deciding a target value of a first control element such that a relationship of an AC wiring portion voltage with respect to a power conversion device active power output from the power conversion device to a first AC wiring portion corresponding to a first generator has a predetermined second drooping characteristic and correcting the target value of the first control element according to a DC voltage at a DC wiring portion.
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公开(公告)号：US10941750B2
公开(公告)日：2021-03-09
申请号：US15999607
申请日：2018-08-20
申请人： ABB Schweiz AG
发明人： Xiaobo Yang , Chunming Yuan , Chao Yang
摘要： A method, system and apparatus for operating a hydraulic turbine. A speed adjustment quantity for the hydraulic turbine and a corresponding change in flow quantity are obtained. A rotation speed of the hydraulic turbine is adjusted based on the speed adjustment quantity. A change ratio of the flow quantity with regard to the speed adjustment quantity is determined based on the speed adjustment quantity and the corresponding change in flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined based on the determined change ratio of flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined change ratio of flow quantity. It enables the hydraulic turbine to track a maximum efficiency operation point under a given power order and water head in real time at a low cost.
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公开(公告)号：US10900374B1
公开(公告)日：2021-01-26
申请号：US16539778
申请日：2019-08-13
摘要： A power extraction system is provided and includes a low-pressure spool of a gas turbine engine, the low-pressure spool being rotatable at an input rotational speed between a first minimum speed and a first maximum speed, downstream components rotatable at an output rotational speed between a second minimum speed and a second maximum speed and a transmission assembly by which rotations of the low-pressure spool at the input rotational speed are transmittable at the output rotational speed to the downstream components. The transmission assembly includes clutches and a controller configured to control openings and closings of the clutches according to an upshifting algorithm whereby a torque applied by the downstream components is used to reduce the output rotational speed to an output speed of a gear into which the transmission assembly is shifting.
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公开(公告)号：US20200044456A1
公开(公告)日：2020-02-06
申请号：US16415026
申请日：2019-05-17
摘要： A method of synchronizing a cross-compound generator system on one or more turning gears during startup includes determining, via a notch monitor controller, first and second angular velocities, respectively, of a first and a second rotor. The method also includes simultaneously exciting, via the notch monitor controller, the first and second rotors to attain electromechanical coupling therebetween. The method further includes determining, via the notch monitor controller, a value of a time at which a calibration value of an offset is a constant value, where the offset is representative of a phase alignment of the first rotor relative to the second rotor, and where the offset is indicative of a successful electromechanical coupling therebetween. The method also includes disengaging the one or more turning gears from the cross-compound generator system.
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公开(公告)号：US20170244312A1
公开(公告)日：2017-08-24
申请号：US15504592
申请日：2015-05-18
申请人： Aker Solutions AS
摘要： The invention provides a topsides drive for electric centrifugal pumps or compressors, distinctive in that the drive comprises an electric motor, an electric generator, a variable stepless coupling connecting the motor to the generator, at least one housing, and penetrators through a wall of the at least one housing.
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公开(公告)号：US20170126159A1
公开(公告)日：2017-05-04
申请号：US14926708
申请日：2015-10-29
CPC分类号： H02P9/06 , F01D21/006 , F02C6/20 , F02C7/36 , F05D2220/76 , F05D2260/40311 , F05D2260/90 , F05D2260/902 , F16H1/28 , H02K7/102 , H02K7/116 , H02K7/1823
摘要： An electrical power generation system for a vehicle includes a prime mover, an electrical generator to generate electrical power and a gear box operably connected to the prime mover and the electrical generator to transfer rotational energy from the prime mover to the electrical generator. A braking mechanism is located at the gear box to selectably transfer rotational energy from the prime mover to the electrical generator for selective generation of electrical power. A method of electrical power generation for a vehicle includes generating rotational energy at a prime mover, transferring the rotational energy to an electrical power generator, generating electrical power via the rotational energy transfer to the electrical power generator, and periodically stopping and/or starting the transfer of rotational energy from the prime mover to the electrical power generator via a braking mechanism in operable communication with the electrical power generator.
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公开(公告)号：US20170036528A1
公开(公告)日：2017-02-09
申请号：US15304795
申请日：2015-04-24
申请人： Cummins Inc.
IPC分类号： B60K6/448 , B60W10/11 , B60W20/30 , B60K6/543 , B60K6/547 , B60K6/26 , B60K6/36 , B60K6/365 , B60K6/40 , F02B63/04 , F02B61/06 , H02K7/18 , H02K7/116 , H02P9/06 , F02N11/00 , B60L11/12 , F16H61/02
CPC分类号： B60K6/448 , B60K6/26 , B60K6/36 , B60K6/365 , B60K6/40 , B60K6/442 , B60K6/54 , B60K6/543 , B60K6/547 , B60K2006/268 , B60L11/12 , B60W10/06 , B60W10/08 , B60W10/11 , B60W20/30 , B60Y2200/92 , B60Y2300/70 , B60Y2400/60 , B60Y2400/72 , B60Y2400/73 , F02B61/06 , F02B63/042 , F02N11/00 , F16H61/0204 , H02K7/116 , H02K7/1815 , H02P9/06 , Y02T10/6234 , Y02T10/6243 , Y10S903/905 , Y10S903/906 , Y10S903/909 , Y10S903/91 , Y10S903/945
摘要： Electric machine assemblies and methods of manufacturing and operating electric machine assemblies for internal combustion engines are provided. The electric machine assembly includes an electric machine configured to generate electric current by induction via a prime mover causing rotation of one of a rotor and a stator with respect to the other one of the rotor and the stator. The electric machine assembly also includes a torque transmitter including a rotating output driver coupled to the prime mover of the electric machine. The torque transmitter includes a rotating input driver configured to receive a rotary input transmitted from a crankshaft of an internal combustion engine. The rotating input driver is coupled to the rotating output driver to actuate the rotating output driver at a plurality of gear ratios.
摘要翻译： 提供了电机组件及其制造和操作用于内燃机的电机组件的方法。 电机组件包括电机，其构造成通过原动机通过感应产生电流，导致转子和定子中的一个相对于转子和定子中的另一个旋转。 电机组件还包括扭矩传递器，其包括联接到电机的原动机的旋转输出驱动器。 扭矩传感器包括旋转输入驱动器，其构造成接收从内燃机的曲轴传递的旋转输入。 旋转输入驱动器耦合到旋转输出驱动器以以多个传动比致动旋转输出驱动器。
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