专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US09691535B2 Filter device 有权
公开(公告)号：US09691535B2
公开(公告)日：2017-06-27
申请号：US14847696
申请日：2015-09-08
申请人： FUJI ELECTRIC CO., LTD.
发明人： Makoto Takano
IPC分类号： H01F27/08 , H03H7/01 , H02J3/01 , H02M1/12 , H01F27/02 , H01F27/32 , H01F27/24 , H01F27/28 , H02M5/42 , H02M7/00
CPC分类号： H01F27/08 , H01F27/02 , H01F27/025 , H01F27/085 , H01F27/24 , H01F27/28 , H01F27/324 , H02J3/01 , H02M1/126 , H02M5/42 , H02M7/003 , H03H7/17 , Y02E40/40
摘要： A filter device is electrically connected between a power supply and a power converter including a converter unit for rectifying inputs and an inverter unit for inversely converting outputs of the converter unit. The filter device includes a casing; a filter reactor housed inside the casing, for removing a high-frequency component; and a booster reactor housed inside the casing and disposed below the filter reactor, for boosting a voltage of a current having passed through the filter reactor. The booster reactor includes an iron core, a coil wound around the iron core, and a spacer interposed between inner and outer circumferential portions of the coil to form an air passage for passing air introduced into the casing. The booster reactor is stored in the casing so that the air that has passed through the air passage passes through a periphery of the filter reactor disposed immediately above the booster reactor.

32. 发明申请

US20170155248A1 HIGH VOLTAGE DIRECT CURRENT POWER INCREASE CONTROLLER AND HVDC SYSTEM INCLUDING THE SAME 有权
公开(公告)号：US20170155248A1
公开(公告)日：2017-06-01
申请号：US15360336
申请日：2016-11-23
申请人： Korea Electric Power Corporation
发明人： Seong Doo LEE , Soon Ho CHOI , Chan Ki KIM
IPC分类号： H02J3/36 , H02M5/42
CPC分类号： H02M5/4505 , H02J3/36 , H02M1/32 , H02M7/7575 , Y02E60/60
摘要： An HVDC power increase controller includes a command output unit for outputting a current command value according to a disturbance signal to a main controller; a voltage drop determiner receiving an alternating current (AC) voltage and comparing a level of the AC voltage to a lowest level of a voltage causing a rectification failure; and a power tracking determiner receiving a direct current (DC) power and comparing a level of the DC power to an estimated power level corresponding to the current command value. The command output unit adjusts the current command value according to a comparison result of the voltage drop determiner and the power tracking determiner.

33. 发明授权

US09666375B2 Voltage smoothing circuit, voltage conversion circuit, and method for controlling voltage to be applied to multilayer capacitor 有权
公开(公告)号：US09666375B2
公开(公告)日：2017-05-30
申请号：US14701756
申请日：2015-05-01
申请人： Murata Manufacturing Co., Ltd.
发明人： Yasuo Fujii
IPC分类号： H01G4/38 , H01G4/30 , H01G4/248 , H02M1/15 , H02M3/07 , H02M5/42 , H01G2/06
CPC分类号： H01G4/38 , H01G2/06 , H01G4/248 , H01G4/30 , H02M1/15 , H02M3/07 , H02M5/42
摘要： A voltage smoothing circuit includes a first multilayer capacitor, a second multilayer capacitor, and a regulator including an input terminal electrically connected to the second multilayer capacitor and an output terminal electrically connected to the first multilayer capacitor. The regulator calculates a first voltage applied to the first multilayer capacitor based on a second voltage applied to the second multilayer capacitor from the input terminal such that a potential difference which is applied to the first multilayer capacitor decreases or increases when a potential difference which is applied to the second multilayer capacitor increases or decreases, and outputs the first voltage from the output terminal.

34. 发明授权

US09647555B2 Chopper output stage for arc welder power source 有权
公开(公告)号：US09647555B2
公开(公告)日：2017-05-09
申请号：US11102429
申请日：2005-04-08
申请人： Todd E. Kooken , Theresa Chih-Lei Miao Spear
发明人： Todd E. Kooken , Theresa Chih-Lei Miao Spear
IPC分类号： B23K9/10 , H02M5/42 , H02M3/158 , H02M1/42 , H02M3/337 , H02M1/00
CPC分类号： H02M3/1584 , B23K9/1056 , H02M1/4225 , H02M3/337 , H02M2001/0064 , H02M2001/007 , Y02P70/181
摘要： Power sources are disclosed for electric arc welding or cutting processes, in which an interleaved multiphase switching converter is provided with a plurality of converter power circuits to convert a DC signal to a regulated signal suitable for welding.

35. 发明申请

US20170093298A1 SYSTEM AND METHOD FOR STARTING A VARIABLE FREQUENCY DRIVE WITH REDUCED ARC FLASH RISK 有权
公开(公告)号：US20170093298A1
公开(公告)日：2017-03-30
申请号：US14870269
申请日：2015-09-30
申请人： EATON CORPORATION
发明人： STAN REX SIMMS , IRVING ALBERT GIBBS
IPC分类号： H02M5/42 , H02M1/32
CPC分类号： H02M5/42 , H02H11/005 , H02M1/32 , H02M5/45
摘要： In one embodiment, a variable frequency drive system includes a main contactor, a variable frequency drive, a charging module structured to generate a magnetizing AC voltage, wherein the charging module is structured to selectively provide the magnetizing AC voltage to a transformer of the variable frequency drive, and a sensing and control circuit having a number of sensors operably associated with the variable frequency drive. The sensing and control circuit is structured to detect a short circuit condition in the variable frequency drive when the magnetizing AC voltage is provided to the transformer based on an output of at least one of the number of sensors, and responsive thereto prevent the main contactor from being closed and thereby prevent the main AC voltage from being provided to the transformer.

36. 发明授权

US09595874B2 Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms 有权
标题翻译：用于调节具有输出检测和同步整流机构的电力转换系统的系统和方法
公开(公告)号：US09595874B2
公开(公告)日：2017-03-14
申请号：US14602944
申请日：2015-01-22
申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
发明人： Yaming Cao , Zhenglan Xia , Yuan Lin , Qiang Luo , Lieyi Fang
IPC分类号： H02M5/42 , H02M3/335 , H02M1/00
CPC分类号： H02M3/33515 , H02M1/08 , H02M3/33592 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , Y02B70/1433 , Y02B70/1475 , Y02B70/16
摘要： System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes a first controller terminal and a second controller terminal. Additionally, the system controller is configured to receive an input signal at the first controller terminal, and generate a drive signal at the second controller terminal based at least in part on the input signal to turn on or off a transistor in order to affect a current associated with a secondary winding of the power conversion system. Moreover, the system controller is further configured to determine whether the input signal is larger than a first threshold at a first time, in response to the input signal being determined to be larger than the first threshold at the first time, determine whether the input signal is smaller than a second threshold at a second time.
摘要翻译：用于调节电力转换系统的系统和方法。用于调节功率转换系统的系统控制器包括第一控制器端子和第二控制器端子。此外，系统控制器被配置为在第一控制器端接收输入信号，并且至少部分地基于输入信号在第二控制器端产生驱动信号以导通或关断晶体管，以便影响电流与电力转换系统的次级绕组相关联。此外，系统控制器还被配置为响应于在第一时间确定输入信号大于第一阈值，确定输入信号是否大于第一阈值，确定输入信号在第二时间小于第二阈值。

37. 发明授权

US09584035B2 Dual-edge tracking synchronous rectifier control techniques for a resonant converter 有权
标题翻译：用于谐振转换器的双边跟踪同步整流控制技术
公开(公告)号：US09584035B2
公开(公告)日：2017-02-28
申请号：US14524423
申请日：2014-10-27
申请人： Fairchild Semiconductor Corporation
发明人： Hangseok Choi
IPC分类号： H02M3/335 , H02M1/00 , H02M5/42 , H02M7/04 , H02M7/68 , H02M3/24 , H02M7/44
CPC分类号： H02M3/33592 , H02M3/3353 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491 , Y02P80/112
摘要： This disclosure provides control techniques for a resonant converter. In one control technique, for switching speeds that are below the resonant frequency of the primary stage of the converter, the switches of the synchronous rectifier (SR) portion (SR switches) of the resonant converter are controlled based on a rising edge of the corresponding primary side switch and the turn off time of a corresponding SR switch. In general, for below resonance operation, each corresponding SR switch will be turned off prior to the falling edge of each corresponding primary side switch, while each corresponding SR switch will be turned on at the rising edge of the each corresponding primary side switch. The conduction time of respective SR switches is generally constant for below resonance operation. In another control technique, for switching speeds that are above the resonant frequency of the primary stage of the converter, the SR switches are controlled based on the falling and rising edges of the voltage across the each corresponding SR switch. In general, for above resonance operation, each corresponding SR switch will be turned off after the falling edge of each corresponding primary side switch, while each corresponding SR switch will be turned on after the rising edge of the each corresponding primary side switch.
摘要翻译：本公开提供了一种用于谐振转换器的控制技术。在一种控制技术中，对于低于转换器的初级级谐振频率的开关速度，谐振转换器的同步整流器（SR）部分（SR）开关的开关基于相应的上升沿来控制初级侧开关和相应的SR开关的关闭时间。一般来说，对于低于共振操作，每个对应的初级侧开关的下降沿之前，每个对应的SR开关将被关闭，而每个相应的初级侧开关的上升沿将会打开每个对应的SR开关。对于低于谐振操作，各个SR开关的导通时间通常是恒定的。在另一种控制技术中，对于高于转换器初级级谐振频率的开关速度，SR开关基于每个对应的SR开关上的电压的下降沿和上升沿来控制。一般来说，对于上述共振操作，每个相应的初级侧开关的下降沿之后，每个对应的SR开关将被关闭，而每个相应的初级侧开关的上升沿之后，每个对应的SR开关将被接通。

38. 发明授权

US09541063B2 Method of operating a wind park 有权
标题翻译：操作风电场的方法
公开(公告)号：US09541063B2
公开(公告)日：2017-01-10
申请号：US14530768
申请日：2014-11-02
申请人： Siemens Aktiengesellschaft
发明人： Bo Yin
IPC分类号： F03D7/02 , F03D9/00 , H02M5/42 , H02P9/04 , F03D7/04 , H02J3/38 , G05B13/02 , H02J3/50 , H02P101/15
CPC分类号： F03D7/0284 , F03D7/048 , F03D9/257 , G05B13/021 , H02J3/386 , H02J3/50 , H02M5/42 , H02P9/04 , H02P2101/15 , Y02E10/723 , Y02E10/763
摘要： A wind turbine is provided having a first converter connected between an electric generator of the wind turbine and a DC link and a second converter connected between the DC link and an output of the wind turbine connectable to a utility grid. The wind turbine further includes a wind turbine controller adapted to control at least one of an output current of the wind turbine, an output voltage of the wind turbine, a reactive output power of the wind turbine, an output voltage of the DC link and an output current of the DC link. The wind turbine further includes a communication device adapted to receive a control signal and to set a control parameter of the wind turbine controller in accordance with the control signal. A network converter, method of operating a wind turbine, methods of operating a wind park and computer-readable storage medium are also provided.
摘要翻译：提供一种风力涡轮机，其具有连接在风力涡轮机的发电机和DC链路之间的第一转换器，以及连接在DC链路和可连接到公用电网的风力涡轮机的输出端之间的第二转换器。风力涡轮机还包括风力涡轮机控制器，其适于控制风力涡轮机的输出电流，风力涡轮机的输出电压，风力涡轮机的无功输出功率，DC链路的输出电压和直流母线的输出电流。风力涡轮机还包括适于接收控制信号并根据控制信号设置风力涡轮机控制器的控制参数的通信设备。还提供了网络转换器，操作风力涡轮机的方法，操作风电场的方法和计算机可读存储介质。

39. 发明授权

US09520819B2 System and method for controlling a power generation system based on a detected islanding event 有权
标题翻译：基于检测到的孤岛事件来控制发电系统的系统和方法
公开(公告)号：US09520819B2
公开(公告)日：2016-12-13
申请号：US14193786
申请日：2014-02-28
申请人： General Electric Company
发明人： Sidney Allen Barker
IPC分类号： F03D9/00 , H02P9/10 , F03D7/00 , H02H7/06 , H02M5/42 , H02P9/00 , H02P9/04 , H02J3/38
CPC分类号： H02P9/10 , F03D7/00 , F03D9/255 , H02H7/067 , H02J3/386 , H02J2003/388 , H02M5/42 , H02P9/007 , H02P9/04 , Y02E10/725 , Y02E10/763
摘要： In one aspect, a method for controlling the operation of a power generation system configured to supply power to an electrical grid may generally include detecting an occurrence of an islanding event associated with the power generation system and adjusting a regulator gain applied within a regulator of the power generation system to an islanding gain value in response to the detection of the islanding event, wherein the islanding gain value exceeds a maximum gain value defined for the regulator in the event of an occurrence of any ride-through transient event. In addition, the method may include controlling a power converter of the power generation system based on a control signal generated by the regulator as the power generation system is being isolated from the electrical grid and shutting down the power generation system upon isolation of the power generation system from the electrical grid.
摘要翻译：一方面，一种用于控制被配置为向电网供电的发电系统的操作的方法通常可以包括检测与发电系统相关联的孤岛事件的发生，并且调整施加在发电系统的调节器内的调节器增益响应于孤岛事件的检测，发电系统到孤岛增益值，其中孤岛增益值超过在发生任何穿越瞬态事件的情况下为调节器定义的最大增益值。此外，该方法可以包括当发电系统与电网隔离时，基于由调节器产生的控制信号来控制发电系统的功率转换器，并且在隔离发电时关闭发电系统系统从电网。

40. 发明授权

US09484833B2 System and method for controlling PCS voltage and frequency 有权
标题翻译：用于控制PCS电压和频率的系统和方法
公开(公告)号：US09484833B2
公开(公告)日：2016-11-01
申请号：US14772377
申请日：2013-12-24
申请人： STATE GRID CORPORATION OF CHINA , XUANCHENG POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER CORPORATION , BEIJING HUA TENG KAI YUAN ELECTRIC COMPANY LIMITED
发明人： Yeru Zhou , Jian Wang , Dongsheng Fu , Xiaoma Jin , Dongsheng Zou , Jin Pan , Yi Song , Jianzhou Cheng , Tianwen Zheng , Jianming Wu , Hongbo Luo
IPC分类号： H02M5/42 , H02M7/217 , H02J3/01 , H02J3/18 , H02M7/797 , H02M7/5387
CPC分类号： H02M7/217 , H02J3/01 , H02J3/1807 , H02M7/797 , H02M2007/53876 , Y02E40/30 , Y02E40/40
摘要： The present invention discloses a system and a method for controlling PCS voltage and frequency, wherein the system comprises a reference voltage converter, a phase-locked loop, a grid-side voltage converter, a voltage transformer, a first proportional integral controller, a second proportional integral controller, a coordinate converter and a SVPWM generator; a reference voltage converter is connected to an output terminal of a the phase-locked loop, and the output terminal of the phase-locked loop is further connected to a grid-side voltage converter; the grid-side voltage converter is connected to a high-voltage side of an isolating transformer of the electric grid via the voltage transformer; two output terminals of the grid-side voltage converter are respectively connected to the coordinate converter via two proportional integral controllers; an output terminal of the coordinate converter is connected to the SVPWM generator; an output terminal of the SVPWM generator is connected to a power switch of the electric grid. A PWM control signal for controlling the power switch of the electric grid is generated by the reference voltage converter, the phase-locked loop, the grid-side voltage converter, the voltage transformer, the two proportional integral controllers, the coordinate converter and the SVPWM generator. The system and method for controlling PCS voltage and frequency according to the invention have the advantages that the PCS can realize voltage and frequency buildup in an off-grid state and can stably output an expected voltage and frequency.
摘要翻译：本发明公开了一种用于控制PCS电压和频率的系统和方法，其中该系统包括参考电压转换器，锁相环，电网侧电压转换器，电压互感器，第一比例积分控制器，第二比例积分控制器，坐标转换器和SVPWM发生器; 参考电压转换器连接到锁相环的输出端，并且锁相环的输出端进一步连接到电网侧电压转换器; 电网侧电压转换器通过变压器连接到电网隔离变压器的高压侧; 电网侧电压转换器的两个输出端子通过两个比例积分控制器分别连接到坐标转换器; 坐标转换器的输出端子连接到SVPWM发生器; SVPWM发生器的输出端子连接到电网的电源开关。用于控制电网电源开关的PWM控制信号由参考电压转换器，锁相环，电网侧电压转换器，变压器，两个比例积分控制器，坐标转换器和SVPWM产生发电机。根据本发明的用于控制PCS电压和频率的系统和方法具有的优点是PCS可以在离网状态下实现电压和频率积累，并且可以稳定地输出期望的电压和频率。

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