专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09859809B2 Power conversion device 有权
公开(公告)号：US09859809B2
公开(公告)日：2018-01-02
申请号：US15321032
申请日：2015-10-23
申请人： Mitsubishi Electric Corporation
发明人： Masafumi Ichihara
IPC分类号： H02M5/458
CPC分类号： H02M5/458 , H02M1/32 , H02M7/497
摘要： A first control unit outputs a closing-operation command signal to a first switch at a timing calculated based on either a first closing time or a second closing time, whichever is later. The first closing time is a time required for the first switch to transition to a closed state after the first control unit detects a first detection signal indicating that a voltage detected by a voltage detection unit exceeds a predetermined threshold value. The second closing time is a time required for a second switch to transition to a closed state after the first detection signal is detected by a second control unit. The second control unit outputs a closing-operation command signal to the second switch at a timing calculated based on a first time. This can suppress variations in an operating time between a plurality of switches.

2. 发明授权

US09496805B2 Single-phase power converter, three-phase two-phase power converter, and three-phase power converter 有权
标题翻译：单相电源转换器，三相二相电源转换器和三相电源转换器
公开(公告)号：US09496805B2
公开(公告)日：2016-11-15
申请号：US14360251
申请日：2012-11-15
申请人： Tokyo Institute of Technology
发明人： Hirofumi Akagi , Makoto Hagiwara
IPC分类号： H02M7/483 , H02M7/797 , H02M7/497 , H02M7/537 , H02M7/538
CPC分类号： H02M7/797 , H02M7/483 , H02M7/497 , H02M7/537 , H02M7/53803 , H02M2007/4835
摘要： This power converter (1) is provided with: unit cells (11-M) having a semiconductor switch, a DC capacitor (C) and a charge/discharge current I/O terminal; a first arm (12-P) and a second arm (12-N) comprising multiple unit cells (11-M) connected to each other in cascade; an arm connecting unit (13) which has a first terminal to which the first arm (12-P) is connected, a second terminal to which the second arm (12-N) is connected, and a third terminal to which a DC power source is connected; and a transformer (14) which has an AC I/O terminal on the primary side and an intermediate terminal on the secondary side winding, and in which the terminal of the first arm (12-P) and the terminal of the second arm (12-N) are connected to the two end terminals on the secondary winding, and the DC power source (Vdc) is connected to the intermediate terminal.
摘要翻译：该功率转换器（1）具有：具有半导体开关的单元电池（11-M），直流电容器（C）和充放电电流I / O端子; 包括彼此串联连接的多个单电池（11-M）的第一臂（12-P）和第二臂（12-N）臂连接单元（13），其具有连接有第一臂（12-P）的第一端子，与第二臂（12-N）连接的第二端子，以及第三端子，DC电源来源连接; 以及变压器（14），其在初级侧具有AC I / O端子和在次级侧绕组上的中间端子，并且其中第一臂（12-P）的端子和第二臂的端子（ 12-N）连接到次级绕组上的两个端子，并且直流电源（Vdc）连接到中间端子。

3. 发明申请

US20140185341A1 DC TO AC POWER CONVERSION APPARATUS AND METHOD THEREOF 有权
标题翻译：直流到交流电源转换装置及其方法
公开(公告)号：US20140185341A1
公开(公告)日：2014-07-03
申请号：US13939916
申请日：2013-07-11
申请人： Industrial Technology Research Institute
发明人： Chau-Chun WEN , Ming-Hung YU
IPC分类号： H02M7/537
CPC分类号： H02M7/4807 , H02M3/33592 , H02M7/497 , H02M2001/0058 , H02M2001/0077 , H02M2007/4815 , Y02B70/1475 , Y02B70/1491
摘要： A DC-to-AC power conversion method is provided, including: generating an AC reference signal and an AC zero crossing detection signal; generating an error signal based on the AC reference signal and an output current or an output voltage at an AC output terminal; generating a turn-off signal based on the error signal and an input current at a DC input terminal; detecting or predicting a valley voltage of a resonance voltage to generate a turn-on signal; generating first, second, third and fourth switching signals based on the AC zero crossing detection signal, the turn-off signal and the turn-on signal; and controlling first, second, third and fourth switching elements of power conversion modules with the first, second, third and fourth switching signals, to enable the first and second power conversion modules to convert the input current of the DC input terminal to the output current of the AC output terminal.
摘要翻译：提供一种直流到交流电力转换方法，包括：产生交流参考信号和交流过零检测信号; 基于AC参考信号产生误差信号，并在AC输出端产生输出电流或输出电压; 基于所述误差信号和DC输入端子处的输入电流产生关断信号; 检测或预测谐振电压的谷值电压以产生导通信号; 基于所述AC过零检测信号，所述关断信号和所述点亮信号产生第一，第二，第三和第四开关信号; 以及利用所述第一，第二，第三和第四开关信号来控制所述功率转换模块的第一，第二，第三和第四开关元件，以使得所述第一和第二功率转换模块能够将所述DC输入端的输入电流转换为所述输出电流的交流输出端子。

4. 发明申请

US20130314948A1 Multi-Phase Grid Interface 有权
标题翻译：多相网格接口
公开(公告)号：US20130314948A1
公开(公告)日：2013-11-28
申请号：US13795633
申请日：2013-03-12
申请人： David J. Perreault , Brandon J. Pierquet
发明人： David J. Perreault , Brandon J. Pierquet
IPC分类号： H02M7/497
CPC分类号： H02M7/497 , H02M7/4807 , H02M7/797
摘要： Circuit topologies and control methods for a multi-phase grid interface are described. In at least one embodiment, a power conversion circuit is provided that includes an inverter stage, a transformer stage, and a cycloconverter stage. The cycloconverter stage may include one cycloconverter circuit for each of multiple phases associated with a multi-phase grid. In some embodiments, each cycloconverter circuit may include first and second half-bridge circuits coupled back-to-back.
摘要翻译：描述了多相电网接口的电路拓扑和控制方法。在至少一个实施例中，提供一种功率转换电路，其包括逆变器级，变压器级和循环变换器级。循环换流器级可以包括用于与多相电网相关联的多个相中的每一个的一个循环换流器电路。在一些实施例中，每个循环换流器电路可以包括背靠背耦合的第一和第二半桥电路。

5. 发明授权

US07974106B2 Ripple cancellation 有权
标题翻译：纹波取消
公开(公告)号：US07974106B2
公开(公告)日：2011-07-05
申请号：US11797707
申请日：2007-05-07
申请人： Ranganathan Gurunathan , Ramesh Srinivasan , Pavana Kumar
发明人： Ranganathan Gurunathan , Ramesh Srinivasan , Pavana Kumar
IPC分类号： H02M3/335 , H02M1/12 , H02M7/48 , H02M7/08 , H02M7/04 , H02M7/5387 , H02J1/10
CPC分类号： H02M7/497 , H02M1/14 , Y10T307/685
摘要： Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the present invention relate to methods and systems usable to reduce ripple currents in fuel cells.
摘要翻译：描述了用于发电系统的系统，方法和装置。特别地，本发明的实施例涉及用于燃料电池的功率调节系统的结构及其中使用的方法。更具体地，本发明的实施例涉及可用于减少燃料电池中的纹波电流的方法和系统。

6. 发明授权

US07705490B2 Integral stack columns 有权
标题翻译：积分堆栈列
公开(公告)号：US07705490B2
公开(公告)日：2010-04-27
申请号：US11797708
申请日：2007-05-07
申请人： Ramesh Srinivasan , Ranganathan Gurunathan
发明人： Ramesh Srinivasan , Ranganathan Gurunathan
IPC分类号： H02J1/00 , H02J1/10
CPC分类号： H02M7/497 , H02M2001/007 , H02M2001/0077 , Y10T307/50 , Y10T307/653 , Y10T307/685 , Y10T307/707
摘要： Systems and methods for power conversion are illustrated. Power conversion architecture for fuel cell systems in particular are described that use dual bus architectures having stack segment pairs and a center-tapped neutral line, and/or an architecture employing integer multiple of three DC/DC converter branches.
摘要翻译：说明了电源转换的系统和方法。具体描述了使用具有堆叠段对和中心抽头中性线的双总线架构和/或采用三个DC / DC转换器分支的整数倍的架构的燃料电池系统的功率转换架构。

7. 发明申请

US20090073726A1 Current Waveform Construction to Generate AC Power With Low Harmonic Distortion From Localized Energy Sources 有权
标题翻译：电流波形结构，从本地化能源产生低谐波失真的交流电源
公开(公告)号：US20090073726A1
公开(公告)日：2009-03-19
申请号：US12233432
申请日：2008-09-18
申请人： Paul M. Babcock
发明人： Paul M. Babcock
IPC分类号： H02M3/335
CPC分类号： H02M7/493 , H02M1/44 , H02M7/497
摘要： Methods and apparatus to provide low harmonic distortion AC power for distribution by converting energy from natural or renewable sources into electrical form, and constructing a current waveform on a primary winding of a transformer by recapturing inductive energy previously stored in the transformer so as to transform the converted electrical energy into substantially sinusoidal AC voltage at a secondary winding of the transformer. For example, AC power may be supplied to a utility power grid from raw electrical energy from renewable energy sources (e.g., solar cells). An inverter may construct the primary winding current waveform using two unidirectional switches. On each half cycle, one of the switches first applies energy previously recaptured from primary winding inductance, and then applies the raw energy to the transformer primary winding at the utility power grid frequency. Accordingly, the constructed primary winding current may exhibit substantially improved total harmonic distortion.
摘要翻译：通过将来自天然或可再生能源的能量转换为电气形式来提供低谐波失真AC电力的方法和装置，以及通过重新获取先前存储在变压器中的感应能量来在变压器的初级绕组上构建电流波形，以便将变压器在变压器的次级绕组处将转换的电能转换成基本正弦的交流电压。例如，可以从可再生能源（例如，太阳能电池）的原始电能向交流电供应交流电力。逆变器可以使用两个单向开关来构造初级绕组电流波形。在每个半周期中，其中一个开关首先施加先前从初级绕组电感重新获取的能量，然后将原始能量施加到公用电网频率的变压器初级绕组。因此，构造的初级绕组电流可能显示出显着改善的总谐波失真。

8. 发明授权

US5514915A Shunt connected superconducting energy stabilizing system 失效
标题翻译：分流连接超导能量稳定系统
公开(公告)号：US5514915A
公开(公告)日：1996-05-07
申请号：US363728
申请日：1994-12-23
申请人： Sang H. Kim , Paul F. Koeppe , Carel C. DeWinkel
发明人： Sang H. Kim , Paul F. Koeppe , Carel C. DeWinkel
IPC分类号： H01L39/14 , H01F6/00 , H02J3/18 , H02J3/50 , H02J9/06 , H02J15/00 , H02M7/497 , H02M7/515 , H02J3/04
CPC分类号： H02M7/497 , H01F6/008 , H02J15/00 , Y02E40/67 , Y10T307/336 , Y10T307/367 , Y10T307/615
摘要： A shunt connected energy stabilizing system with isolation switching for providing stored energy to loads or to a utility or industrial electrical distribution system or source of electrical power. An energy backup and recovery system stores energy in a superconducting magnet and releases the energy to a real power/reactive power (VARs) generator which in turn delivers energy to either the loads or to both the loads and the source of electrical power. During periods of voltage sag or power outage, an isolation switch provide a means for isolating the loads from the source of power so that energy can be supplied to the loads only to provide "ride-thru". In effect, the isolation of the load sheds this load from the power system, thereby boosting the rest of the electrical distribution to a level so that other loads on the power system are not disturbed by the voltage sags. By supplying energy to the loads only, small superconducting magnets can be used thereby providing economic and size advantages. The isolation switch also provides a smooth transition from the real power generation to the VAR compensation mode, and vice versa. Additionally, the isolation switch can direct stored energy to both the electrical system and to the loads at the same time.
摘要翻译：一种分流连接的能量稳定系统，具有隔离开关，用于向负载或公用事业或工业配电系统或电力源提供储存的能量。能量备份和恢复系统将能量存储在超导磁体中，并将能量释放到实际的功率/无功功率（VAR）发生器，该功率/无功功率（VAR）发电机又向负载或负载和电源供电。在电压骤降或停电期间，隔离开关提供了将负载与电源隔离的装置，以便只能向负载提供能量以提供“穿越”。实际上，负载的隔离使得该负载从电力系统中脱离，从而将其余的电气分配提升到一个水平，使得电力系统上的其它负载不会受到电压骤降的干扰。通过仅向负载提供能量，可以使用小型超导磁体，从而提供经济和尺寸的优点。隔离开关还提供从实际发电到VAR补偿模式的平滑过渡，反之亦然。此外，隔离开关可以将存储的能量同时引导到电气系统和负载。

9. 发明授权

US4967333A Stabilized power supply with reduced ripple factor 失效
标题翻译：稳定电源，纹波系数降低
公开(公告)号：US4967333A
公开(公告)日：1990-10-30
申请号：US365366
申请日：1989-06-13
申请人： Bernard Callier , Jean-Pierre Maynard
发明人： Bernard Callier , Jean-Pierre Maynard
IPC分类号： H02M7/06 , H02M3/28 , H02M3/315 , H02M3/335 , H02M7/10 , H02M7/497 , H02M7/515 , H05G1/32
CPC分类号： H02M7/497 , H02M3/28 , H02M3/3155 , H05G1/32
摘要： The ripple factor in an electrical power supply of a dc-dc voltage raising type is reduced by using two double alternation dc/ac converters driven in phase quadrature with respect to each other. The signals delivered by the dc/ac converters are then combined by two transformers, the secondary coils of which are series connected. It is shown that the ripple factor is reduced and, similarly, that the reactive energy due to the commutation of th dc/ac converters is reduced even if it so happens that the power transmitted is doubled.
摘要翻译：通过使用以相位相位彼此驱动的两个双交替dc / ac转换器来减小dc-dc升压型电源中的纹波因数。由dc / ac转换器传递的信号由两个变压器组合，其二次线圈串联连接。可以看出，纹波因数减小，同样地，由于直流/交流转换器的换向引起的无功电能即使发生的功率增加一倍也会降低。

10. 发明授权

US10075091B2 Power converter 有权
公开(公告)号：US10075091B2
公开(公告)日：2018-09-11
申请号：US15566249
申请日：2015-04-24
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Kenichi Kuroda , Ryosuke Uda , Masashi Kitayama
IPC分类号： H02M7/23 , H02M7/497 , H02M1/32 , H02M7/155 , H02M7/537 , H02M1/00
CPC分类号： H02M7/23 , H02H7/1216 , H02H7/1222 , H02H7/1257 , H02M1/32 , H02M7/155 , H02M7/497 , H02M7/537 , H02M2001/0006 , H02M2001/0009 , H02M2007/4835
摘要： In a multilevel converter, three circuit breakers are respectively connected between three arms and three reactors. One circuit breaker is a DC circuit breaker configured to interrupt direct current when a short circuit accident occurs between two DC power transmission lines. Each of the two circuit breakers is an AC circuit breaker configured to interrupt alternating current when the short circuit accident occurs. When the short circuit accident occurs, the two AC circuit breakers are brought into the non-conductive state and then the DC circuit breaker is brought into the non-conductive state, thereby interrupting the short circuit current.

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