-
公开(公告)号：US11695279B2
公开(公告)日：2023-07-04
申请号：US17731083
申请日：2022-04-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Chengfeng Jiang , Chengyong Liu , Qingyuan Wang
CPC classification number: H02J3/381 , H02J3/0012 , H02J3/42 , H02S50/10 , H02J2300/22 , H02J2300/24 , H02J2300/26
Abstract: A physical address determining method, apparatus, and device, and a storage medium, and belongs to the field of solar power generation, includes: controlling at least two slave nodes to sequentially start up, and detecting a change status of an input voltage of the master node; dividing a photovoltaic power generation system into a plurality of photovoltaic strings; and for each candidate photovoltaic string, controlling any slave node located in the candidate photovoltaic string to start up and other slave nodes to shut down, and using the physical address as a physical address of the candidate photovoltaic string. This disclosure provides a manner of automatically determining a physical address of a photovoltaic string, thereby implementing photovoltaic-string locating and expanding a system function range. When an anomaly occurs, the anomaly can be eliminated in a timely manner, thereby improving system stability.
-
2.发明公开公开(公告)号：US20230178996A1
公开(公告)日：2023-06-08
申请号：US17920693
申请日：2020-04-23
Applicant: Hitachi Energy Switzerland AG
Inventor： Theodore Soong , Jean-Philippe Hasler
CPC classification number: H02J3/42 , H02J3/48 , H02J2203/20 , H02J2300/20
Abstract: A method can be used to control a voltage source converter of a power supporting arrangement to act as a virtual synchronous machine. The method includes obtaining a measured power level of the converter, processing the measured power level using a differential equation of an angular velocity of the virtual synchronous machine in order to obtain a control contribution, providing a phase angle of a physical quantity used to control the converter based on the control contribution, monitoring the ability of the converter to act as a virtual synchronous machine, determining that the ability of the converter to act as a virtual synchronous machine is deemed insufficient, and adjusting the control contribution by increasing the damping term and/or decreasing the moment of inertia term in response to determining that the ability of the converter to act as a virtual synchronous machine is deemed insufficient.
-
公开(公告)号：US20170271881A1
公开(公告)日：2017-09-21
申请号：US15070448
申请日：2016-03-15
Applicant: General Electric Company
Inventor： Lawrence Dean Walters
IPC: H02J3/42
Abstract: 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.
-
公开(公告)号：US09657709B2
公开(公告)日：2017-05-23
申请号：US14384128
申请日：2013-03-11
Applicant: ABB TECHNOLOGY AG
Inventor： Claes Hillberg , Georg Traxler-Samek , Peter Steimer
IPC: H02J1/00 , H02J3/00 , F03B13/06 , H02P27/14 , H02H7/04 , H02M7/483 , H02P1/52 , H02J3/42 , H02J3/36 , H02K7/18 , H02P9/00 , H02P25/022 , H02H3/02 , F01D19/00 , H02P9/04 , H02P9/08 , H02P25/024
CPC classification number: F03B13/06 , F01D19/00 , H02H3/02 , H02H7/04 , H02J3/36 , H02J3/42 , H02K7/1807 , H02M7/483 , H02P1/52 , H02P9/00 , H02P9/04 , H02P9/08 , H02P25/022 , H02P25/024 , H02P27/14 , Y02E60/17 , Y02P80/116
Abstract: A power plant, and a method for using an electrical unit therefor are disclosed, wherein, an electrical machine can be connected to a power network via a converter and a block transformer. A method is disclosed for using the electrical unit, wherein the converter disconnects the block transformer from the machine in the event of a malfunction of the block transformer.
-
公开(公告)号：US20150061298A1
公开(公告)日：2015-03-05
申请号：US14540536
申请日：2014-11-13
Applicant: General Electric Company
Inventor： Ara Panosyan , Stefan Schroeder , Christoph Boeld , Herbert Schaumberger , Johann Hirzinger-Unterrainer , Xiaoting Dong , Uwe Liebscher
CPC classification number: H02H7/067 , F03D7/0244 , F03D7/0272 , F16D2121/20 , H02J3/40 , H02J3/42 , H02P3/04 , H02P9/04 , H02P9/06 , H02P9/102 , Y02E10/723 , Y10T307/735 , Y10T477/814
Abstract: An electromagnetic braking system includes an electrically conductive disc coupled to a rotatable shaft of a power generation system for operating in an island mode. The rotatable shaft is operatively coupled between a prime mover and a generator for supplying power to an island grid. The electromagnetic braking system further includes a controller for receiving at least one status or synchronization signal and for generating a control signal based on the at least one signal and an inducting unit for applying an electromagnetic braking force on the electrically conductive disc when commanded by the control signal to regulate a rotational speed of the rotatable shaft.
Abstract translation: 电磁制动系统包括耦合到用于以岛模式操作的发电系统的可旋转轴的导电盘。 可旋转轴可操作地联接在原动机和用于向岛格栅供电的发电机之间。 电磁制动系统还包括控制器，用于接收至少一个状态或同步信号，并且用于基于至少一个信号产生控制信号;以及感应单元，用于当由控制器命令时在电导盘上施加电磁制动力 信号以调节可旋转轴的转速。
-
Patent Agency Ranking
公开(公告)号：US20150035285A1
公开(公告)日：2015-02-05
申请号：US14384071
申请日：2013-03-11
Applicant: ABB Technology AG
Inventor： Friedrich Winkler , Georg Traxler-Samek , Stefan Linder
CPC classification number: F03B13/06 , F01D19/00 , H02H3/02 , H02H7/04 , H02J3/36 , H02J3/42 , H02K7/1807 , H02M7/483 , H02P1/52 , H02P9/00 , H02P9/04 , H02P9/08 , H02P25/022 , H02P25/024 , H02P27/14 , Y02E60/17 , Y02P80/116
Abstract: A pumped-storage power plant, such as an electric unit can include a frequency converter and a rotating electric synchronous machine, the machine being provided in a cavern. The frequency converter can include at least two elements which can be used as inverters or as rectifiers according to the operating mode of the machine, for example during the operation of the motor or during the operation of the generator. The machine-side element can be provided within the cavern, and the network-side element can be provided outside of the cavern.
Abstract translation: 诸如电单元的抽水蓄能电站可以包括变频器和旋转电同步电机，该机器设置在洞穴中。 变频器可以包括至少两个元件，其可以根据机器的操作模式用作逆变器或整流器，例如在电动机的操作期间或在发电机的操作期间。 机器侧元件可以设置在洞穴内，并且网络侧元件可以设置在洞穴外部。
-
公开(公告)号：US08519568B2
公开(公告)日：2013-08-27
申请号：US13235345
申请日：2011-09-16
Applicant: Andre Langel
Inventor： Andre Langel
IPC: H02J9/00
CPC classification number: F03D9/257 , F03D7/00 , F03D7/042 , F03D7/048 , F03D9/11 , F03D9/255 , F05B2260/42 , F05B2270/1071 , F05B2270/10711 , H02J3/386 , H02J3/42 , H02J9/06 , Y02B10/72 , Y02E10/723 , Y02E10/763 , Y02E10/766 , Y02E20/14 , Y10T307/615 , Y10T307/724 , Y10T307/735
Abstract: A wind turbine is provided. The wind turbine includes a transformer having a low-voltage side and a high-voltage side. The transformer is configured to step up a voltage of the low-voltage side of the transformer to a voltage of an external grid. The wind turbine further includes an electrical power generating unit which is connected to the low-voltage side of the transformer and configured to feed an ac-power to the low-voltage side of the transformer. A charging device of the wind turbine is connected to the low-voltage side of the transformer and configured to charge the low-voltage side of the transformer when the generator does not feed ac-power to the low-voltage side of the transformer.
Abstract translation: 提供风力涡轮机。 风力涡轮机包括具有低压侧和高压侧的变压器。 变压器被配置为将变压器的低压侧的电压升高到外部电网的电压。 风力涡轮机还包括发电单元，其连接到变压器的低压侧并且被配置为将交流电馈送到变压器的低压侧。 风力涡轮机的充电装置连接到变压器的低压侧，并且当发电机不向变压器的低压侧馈送交流电时，被配置为对变压器的低压侧充电。
-
公开(公告)号：US08355265B2
公开(公告)日：2013-01-15
申请号：US13047754
申请日：2011-03-14
Applicant: Gary A. Gengenbach
Inventor： Gary A. Gengenbach
IPC: H02M3/335
CPC classification number: H02J3/18 , H02J3/42 , H02M7/68 , Y02E10/563 , Y02E40/30 , Y10T307/735
Abstract: Systems and methods for managing interaction between inverter-based DC and other power systems are disclosed. In one embodiment, a 3-phase isolation transformer is fluxed to create a 3-phase rotating field from the output of a source inverter. An inductive filter turns that output into three sine waves. A secondary inverter regenerates the system, sometimes after the isolation transformer is fluxed, and by advancing or retarding the secondary inverter's phase, current (and, thus, the DC voltage and power direction) is controlled. In another embodiment, an inverter is supplied by a DC source. The inverter is controlled to match its output voltage, current, and phase to a live AC grid, then the two are connected. The inverter frequency is then driven to advance the phase of the inverter in relation to the grid. Alternatively, the inverter voltage is then driven at a level greater than that of the grid.
Abstract translation: 公开了用于管理基于逆变器的DC和其他电力系统之间的交互的系统和方法。 在一个实施例中，三相隔离变压器被焊接以从源逆变器的输出产生三相旋转场。 感应滤波器将该输出转换成三个正弦波。 次级逆变器重新生成系统，有时在隔离变压器通电后，通过推进或延迟二次变频器的相位，控制电流（以及因此的直流电压和功率方向）。 在另一个实施例中，逆变器由DC源提供。 控制逆变器将其输出电压，电流和相位与实时交流电网相匹配，然后将两者连接起来。 然后驱动逆变器频率以相对于电网推进逆变器的相位。 或者，逆变器电压然后以大于电网的电平驱动。
-
公开(公告)号：US20110216562A1
公开(公告)日：2011-09-08
申请号：US13047754
申请日：2011-03-14
Applicant: Gary A. Gengenbach
Inventor： Gary A. Gengenbach
CPC classification number: H02J3/18 , H02J3/42 , H02M7/68 , Y02E10/563 , Y02E40/30 , Y10T307/735
Abstract: This disclosure includes systems and methods for managing the interaction between inverter-based DC and other power systems. In one embodiment, a 3-phase isolation transformer is fluxed to create a 3-phase rotating field from the output of a source inverter. An inductive filter turns that output into three sine waves. A secondary inverter regenerates the system, sometimes after the isolation transformer is fluxed, and by advancing or retarding the secondary inverter's phase, current (and, thus, the DC voltage and power direction) is controlled. In another embodiment, an inverter is supplied by a DC source. The inverter is controlled to match its output voltage, current, and phase to a live AC grid, then the two are connected. The inverter frequency is then driven to advance the phase of the inverter in relation to the grid. Alternatively, the inverter voltage is then driven at a level greater than that of the grid.
Abstract translation: 本公开包括用于管理基于逆变器的DC和其他电力系统之间的相互作用的系统和方法。 在一个实施例中，三相隔离变压器被焊接以从源逆变器的输出产生三相旋转场。 感应滤波器将该输出转换成三个正弦波。 次级逆变器重新生成系统，有时在隔离变压器通电后，通过推进或延迟二次变频器的相位，控制电流（以及因此的直流电压和功率方向）。 在另一个实施例中，逆变器由DC源提供。 控制逆变器将其输出电压，电流和相位与实时交流电网相匹配，然后将两者连接起来。 然后驱动逆变器频率以相对于电网推进逆变器的相位。 或者，逆变器电压然后以大于电网的电平驱动。
-
公开(公告)号：US07656060B2
公开(公告)日：2010-02-02
申请号：US11980344
申请日：2007-10-31
Applicant: Marcelo C. Algrain
Inventor： Marcelo C. Algrain
IPC: H02J9/00
CPC classification number: H02J3/42 , H02J3/48 , H02J3/50 , Y10T307/664 , Y10T307/68 , Y10T307/718
Abstract: A method of operating a power system is provided. The power system has a plurality of generator sets and a bus. The method monitors the bus and generator sets disconnected from the bus. The method supplies to a control device information associated with the operating state of each of the generator sets and the bus. The method determines a relative frequency mismatch and a relative phase mismatch between the frequency and phase of the bus and a generator, and generates a frequency speed bias and a phase speed bias for the generator. The method adds the frequency and phase speed biases to form a total speed bias, tunes the total speed bias to make the frequency and phase speed biases combine in a complementary manner, and connects the generator to the bus when the voltage, frequency, and phase of the generator are within a permissible range of the bus.
Abstract translation: 提供了一种操作电力系统的方法。 电力系统具有多个发电机组和总线。 该方法监视与总线断开的总线和发电机组。 该方法向控制装置提供与每个发电机组和总线的操作状态相关联的信息。 该方法确定总线和发生器的频率和相位之间的相对频率失配和相对相位失配，并且产生用于发电机的频率偏差和相位偏移。 该方法增加了频率和相位速度偏差，形成总速度偏置，调整总速度偏置，使频率和相位速度偏置互补结合，并将电压，频率和相位的发生器连接到总线 的发电机在公共汽车的允许范围内。
-
-
-
-
-
-
-
-
-
Search Results
420
records
(took 0.021 seconds)
