专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US09728974B2 Renewable energy site reactive power control 有权
公开(公告)号：US09728974B2
公开(公告)日：2017-08-08
申请号：US14050928
申请日：2013-10-10
申请人： TMEIC Corporation
发明人： Benjamin D. Rudolph , Paul S. Bixel
IPC分类号： H02J1/10 , H02J3/38 , H02J3/50 , H02M1/42 , H02J3/16 , H02J3/18
CPC分类号： H02J3/50 , H02J3/16 , H02J3/18 , H02J3/1842 , H02J3/381 , H02M1/4233 , Y02B70/126 , Y02E40/22 , Y02E40/34 , Y10T307/549
摘要： Methods, systems, controller devices, and computer program products for reactive power control at a renewable energy site are provided. Embodiments address dynamic performance problems associated with control loop delay and the changing modes of operation for meeting utility voltage and reactive power constraints. Provided is a method for reactive power control involving: (a) determining a site-wide reactive power command comprised by a sum of a reactive power feedforward or compensation term and an integrator term; and (b) distributing the site-wide reactive power command among inverters. Embodiments can include a reactive power control term based on the sum of a single integrator and reactive power compensation term, an integrator anti-windup mechanism based on the status of individual inverters, a means for decreasing detrimental effects of loop delay during reactive power reference changes, and/or a means of implementing voltage and power factor limits with smooth transfer between reactive power operating regions.

12. 发明申请

US20170040887A1 DC/AC CONVERTER APPARATUS COMPRISING MEANS FOR CONTROLLING THE REACTIVE POWER AND POWER CONVERSION AND GENERATION SYSTEM COMPRISING SUCH DC/AC CONVERTER APPARATUS 审中-公开
标题翻译： DC / AC转换器装置，包括用于控制反应动力和功率转换的装置以及包含这种DC / AC转换器装置的发电系统
公开(公告)号：US20170040887A1
公开(公告)日：2017-02-09
申请号：US15227544
申请日：2016-08-03
申请人： ABB Schweiz AG
发明人： Andrea Becattini , Sauro Macerini
IPC分类号： H02M1/42 , G01R21/133 , H02J3/16 , G01R21/00 , H02J7/00 , H02J3/38
CPC分类号： H02M1/42 , G01R21/003 , G01R21/1331 , H02J3/16 , H02J3/1842 , H02J3/32 , H02J3/382 , H02J3/383 , H02J3/385 , H02J3/50 , H02J7/0068 , H02M2001/0009 , Y02E10/58 , Y02E40/22
摘要： DC/AC converter apparatus, for converting DC power of a DC energy source into AC power for supplying a load and or the utility grid, adapted to automatically control the amount of both active and reactive electrical power that is exchanged with the utility grid in order to optimize the electrical power usage of the micro grid.
摘要翻译： DC / AC转换器装置，用于将直流能源的直流电力转换成用于提供负载的电力和/或公用电网，其适于自动控制与公用电网交换的有功和无功电力的数量以优化微电网的电力使用。

13. 发明申请

US20170012427A1 HYBRID WINCH WITH CONTROLLED RELEASE AND TORQUE IMPULSE GENERATION CONTROL FOR ANCHOR HANDLING OFFSHORE 有权
标题翻译：具有控制泄漏和扭矩生成控制的混合式水闸
公开(公告)号：US20170012427A1
公开(公告)日：2017-01-12
申请号：US15209387
申请日：2016-07-13
申请人： Electronic Power Design, Inc.
发明人： Charles Sutherland , John Bradford Janik
IPC分类号： H02J3/01
CPC分类号： H02J3/01 , H02J3/1842 , H02J3/185 , H02J4/00 , Y02E40/22 , Y02E40/24
摘要： A computer program product and system are disclosed including but not limited to supplying a voltage waveform from a higher power electrical bus to a lower power electrical bus; sensing on the lower power electrical bus, a deviation from a sinusoidal voltage waveform in the voltage waveform supplied from the higher power electrical bus; generating a correction current to adjust the deviation in the voltage on the lower power bus to a substantially sinusoidal voltage waveform; and filtering the correction current to substantially attenuate the correction current from propagating through the filter from the lower power electrical bus to the higher power electrical bus.
摘要翻译：公开了一种计算机程序产品和系统，包括但不限于将电力波形从较高功率的电气总线提供给较低功率的电气总线; 在较低功率电气总线上感测到与从较高功率电力总线提供的电压波形中的正弦电压波形的偏差; 产生校正电流以将低功率总线上的电压的偏差调整到基本上正弦的电压波形; 并且对所述校正电流进行滤波以使所述校正电流从所述低功率电气总线传播到所述较高功率电气总线，从而传播通过所述滤波器。

14. 发明申请

US20160285273A1 METHOD AND APPARATUS FOR COMPENSATING NON-ACTIVE CURRENTS IN ELECTRICAL POWER NETWORKS 审中-公开
标题翻译：用于补偿电力网络中非主动电流的方法和装置
公开(公告)号：US20160285273A1
公开(公告)日：2016-09-29
申请号：US14777531
申请日：2014-03-17
申请人： MERUS POWER DYNAMICS OY
发明人： Aki Leinonen , Jyri Öörni
IPC分类号： H02J4/00 , H02M5/458
CPC分类号： H02J4/00 , H02J3/1842 , H02J3/24 , H02J3/32 , H02J7/34 , H02J9/04 , H02M5/458 , Y02E40/22
摘要： A power conditioning device has a first operating mode where the device compensates non-active current components caused by a load, and a second operating mode where the device disconnects the load from a supply in a voltage sag situation, and also provides reserve power for the load.
摘要翻译：功率调节装置具有第一操作模式，其中装置补偿由负载引起的非有效电流分量，以及第二操作模式，其中装置在电压骤降情况下断开负载与电源的连接，并且还为加载。

15. 发明申请

US20160268940A1 SYSTEM AND METHOD FOR IMPROVED REACTIVE POWER SPEED-OF-RESPONSE FOR A WIND FARM 有权
标题翻译：用于风力发电机的改进的反应动力响应的系统和方法
公开(公告)号：US20160268940A1
公开(公告)日：2016-09-15
申请号：US14642869
申请日：2015-03-10
申请人： General Electric Company
发明人： Alfredo Sebastian Achilles , Einar Vaughn Larsen
IPC分类号： H02P9/00 , F03D9/00
CPC分类号： H02P9/00 , F03D9/257 , H02J3/1842 , H02J3/386 , H02P2101/15 , H02P2103/20 , Y02E10/763 , Y02E40/22
摘要： The present subject matter is directed to a system and method for regulating reactive power in a wind farm connected to a power grid so as to improve reactive speed-of-response of the wind farm. The method includes receiving a voltage feedback from the power grid and a voltage reference and calculating a linear voltage error as a function of the voltage feedback and the voltage reference. A further step includes generating a first output based on the linear voltage error via a first control path having a first voltage regulator. A further step includes determining a non-linear voltage error based on the linear voltage error via a second control path having a second voltage regulator. A second output is generated via the second control path based on the non-linear voltage error. As such, a reactive power command is generated as a function of the first and second outputs.
摘要翻译：本发明涉及一种用于调节连接到电网的风力发电场中的无功功率的系统和方法，以改善风电场的无效响应速度。该方法包括从电网接收电压反馈和电压基准，并计算作为电压反馈和电压基准的函数的线性电压误差。另一步骤包括经由具有第一电压调节器的第一控制路径产生基于线性电压误差的第一输出。另一步骤包括经由具有第二电压调节器的第二控制路径基于线性电压误差来确定非线性电压误差。基于非线性电压误差通过第二控制路径生成第二输出。因此，产生无功功率命令作为第一和第二输出的函数。

16. 发明申请

US20160233787A1 POWER CONVERSION DEVICE AND METHOD OF CONTROLLING THE SAME 有权
标题翻译：电力转换装置及其控制方法
公开(公告)号：US20160233787A1
公开(公告)日：2016-08-11
申请号：US15029881
申请日：2013-10-15
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
发明人： Yuji MATSUOKA , Tatsuaki AMBO
IPC分类号： H02M7/48
CPC分类号： H02J7/35 , H02J3/1842 , H02J3/28 , H02J3/383 , H02M3/33507 , H02M7/48 , Y02E10/563 , Y02E10/566 , Y02E40/22
摘要： A power conversion device includes a smoothing capacitor, an input voltage detection unit, a power conversion unit, and a controller. The input voltage detection unit detects a voltage value of the input voltage. The power conversion unit converts a direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to output the alternating-current voltage to a power system. The controller has a first operation mode of outputting active power to the power system, has a second operation mode of outputting reactive power to the power system, determines whether or not the voltage value is one of equal to and higher than a determination value, and makes a transition from the first operation mode to the second operation mode within a predetermined time from a time point when it is determined that the voltage value is lower than the determination value.
摘要翻译：电力转换装置包括平滑电容器，输入电压检测单元，电力转换单元和控制器。输入电压检测单元检测输入电压的电压值。功率转换单元将由平滑电容器平滑的直流电压转换为交流电压，以将交流电压输出到电力系统。控制器具有向电力系统输出有功功率的第一操作模式，具有向电力系统输出无功功率的第二操作模式，确定电压值是否等于并高于确定值，以及在从确定电压值低于确定值的时间点起的预定时间内，从第一操作模式转换到第二操作模式。

17. 发明授权

US09401605B2 System and method for reducing harmonic distortion 有权
标题翻译：减少谐波失真的系统和方法
公开(公告)号：US09401605B2
公开(公告)日：2016-07-26
申请号：US13555120
申请日：2012-07-21
申请人： John Bradford Janik , Charles Sutherland
发明人： John Bradford Janik , Charles Sutherland
IPC分类号： H02J3/01 , H02J3/18 , H02J4/00
CPC分类号： H02J3/01 , H02J3/1842 , H02J3/185 , H02J4/00 , Y02E40/22 , Y02E40/24
摘要： A method is disclosed including but not limited to supplying a voltage waveform from a higher power electrical bus to a lower power electrical bus; sensing on the lower power electrical bus, a deviation from a sinusoidal voltage waveform in the voltage waveform supplied from the higher power electrical bus; generating a correction current to adjust the deviation in the voltage on the lower power bus to a substantially sinusoidal voltage waveform; and filtering the correction current to substantially attenuate the correction current from propagating through the filter from the lower power electrical bus to the higher power electrical bus. A system is disclosed for performing the method.
摘要翻译：公开了一种方法，包括但不限于将电力波形从较高功率电力总线提供给较低功率电力总线; 在较低功率电气总线上感测到与从较高功率电力总线提供的电压波形中的正弦电压波形的偏差; 产生校正电流以将低功率总线上的电压的偏差调整到基本上正弦的电压波形; 并且对所述校正电流进行滤波以使所述校正电流从所述低功率电气总线传播到所述较高功率电气总线，从而传播通过所述滤波器。公开了一种用于执行该方法的系统。

18. 发明申请

US20160149413A1 DISTRIBUTED POWER SOURCE SYSTEM WITH STORAGE BATTERY 有权
标题翻译：具有储存电池的分布式电源系统
公开(公告)号：US20160149413A1
公开(公告)日：2016-05-26
申请号：US14946481
申请日：2015-11-19
申请人： TABUCHI ELECTRIC CO., LTD.
发明人： Hidehiko SUGIMOTO
IPC分类号： H02J3/18 , H02J7/35
CPC分类号： H02J7/35 , H02J3/1842 , H02J3/32 , Y02E40/22
摘要： The present system 1 includes a distributed power source 2, a storage battery 4, a bidirectional inverter 7 having a smoothing capacitor 6 on its DC side, and a control section 10 for controlling the entire system, and supplies AC power to a load 9 while being interconnected with a power system 8. When active power supplied from the distributed power source 2 and/or the storage battery 4 to the smoothing capacitor 6 is equal to or greater than active power of load power, the control section 10 controls a power factor of inverter output current outputted from the bidirectional inverter 7 so as to coincide with a power factor of load current flowing to the load 9.
摘要翻译：本系统1包括分布式电源2，蓄电池4，在其直流侧具有平滑电容器6的双向逆变器7和用于控制整个系统的控制部10，并且向负载9提供交流电力，同时与电力系统8互连。当从分布式电源2和/或蓄电池4向平滑电容器6提供的有功功率等于或大于负载功率的有功功率时，控制部分10控制功率因数从双向逆变器7输出的逆变器输出电流与流入负载9的负载电流的功率因数一致。

19. 发明申请

US20160141978A1 CONTROL APPARATUS FOR PHOTOVOLTAIC INVERTER 有权
标题翻译：光伏逆变器的控制装置
公开(公告)号：US20160141978A1
公开(公告)日：2016-05-19
申请号：US15002829
申请日：2016-01-21
申请人： Toshiba Mitsubishi-Electric Industrial Systems Corporation
发明人： Yuji Matsuoka , Ruben Alexis Inzunza Figueroa , Tatsuaki Ambo
IPC分类号： H02M7/537
CPC分类号： H02M7/537 , H02J3/1842 , H02J3/385 , Y02E10/58 , Y02E40/22
摘要： There is provided a control apparatus for a photovoltaic inverter. The control apparatus includes a system voltage detector, a DC voltage detector that detects a DC voltage applied to the inverter, an output voltage deficiency detector that detects an output voltage deficiency of the inverter based on the system voltage and the DC voltage, an output-current detector, an output-current distortion detector that detects distortion of the output current based on a harmonic included in the output current, a MPPT controller, and an output-current distortion controller that performs control to set the DC voltage applied to the inverter to a voltage at a power point less than a maximum power point when the output voltage deficiency is detected and the distortion of the output current is detected.
摘要翻译：提供了一种用于光伏逆变器的控制装置。控制装置包括：系统电压检测器，检测施加到逆变器的直流电压的直流电压检测器;输出电压不足检测器，其基于系统电压和直流电压检测逆变器的输出电压不足; 电流检测器，基于包括在输出电流中的谐波来检测输出电流的失真的输出电流失真检测器，MPPT控制器和输出电流失真控制器，其执行将施加到逆变器的直流电压设置为当检测到输出电压不足并且检测到输出电流的失真时，在小于最大功率点的功率点处的电压。

20. 发明申请

US20160134114A1 COMPENSATING ELECTRICAL HARMONICS ON THE ELECTRICAL GRID 审中-公开
标题翻译：在电网上补偿电气谐波
公开(公告)号：US20160134114A1
公开(公告)日：2016-05-12
申请号：US14899694
申请日：2013-06-18
申请人： VESTAS WIND SYSTEMS A/S
发明人： Amit Kumar GUPTA , Manoj GUPTA , Dilip Kumar GURU
IPC分类号： H02J3/01 , G01R19/00 , H02J3/38 , G01R27/02 , H02M1/12 , H02M7/44
CPC分类号： H02J3/01 , G01R19/0092 , G01R27/02 , H02J3/1842 , H02J3/382 , H02J3/383 , H02J3/386 , H02M1/12 , H02M7/44 , Y02E10/763 , Y02E40/22
摘要： The invention relates to a control system for compensating undesired electrical harmonics on an electrical grid. Part of the control system referred to as a harmonic compensator is operatively connected with a power inverter of a power producing unit supplying power to the grid. Another part of the control system, referred to as an impedance detector, is operatively connected to a point of coupling to which point one or more power producing units are connected. The impedance detector is configured to scan impedances as a function of frequency to identify frequencies of impedance peaks which peaks are indicative of resonance frequencies. The determined resonance frequencies are supplied to one or more the harmonic compensators. A compensator determines control signals to the inverter which causes the inverter to inject compensation currents to the grid which currents will damp currents oscillating at or close to the determined resonance frequency.
摘要翻译：本发明涉及一种用于补偿电网上不需要的电谐波的控制系统。被称为谐波补偿器的控制系统的一部分与向电网供电的发电单元的功率逆变器可操作地连接。称为阻抗检测器的控制系统的另一部分可操作地连接到连接点，一个或多个功率产生单元连接到该点。阻抗检测器被配置为扫描作为频率的函数的阻抗，以识别峰值指示谐振频率的阻抗峰值的频率。所确定的谐振频率被提供给一个或多个谐波补偿器。补偿器确定到逆变器的控制信号，使逆变器向电网注入补偿电流，电流将阻尼在或接近所确定的谐振频率振荡的电流。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式