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1. 发明申请

US20180269684A1 MULTI-LEVEL MEDIUM VOLTAGE DATA CENTER STATIC SYNCHRONOUS COMPENSATOR (DCSTATCOM) FOR ACTIVE AND REACTIVE POWER CONTROL OF DATA CENTERS CONNECTED WITH GRID ENERGY STORAGE AND SMART GREEN DISTRIBUTED ENERGY SOURCES 审中-公开
公开(公告)号：US20180269684A1
公开(公告)日：2018-09-20
申请号：US15715872
申请日：2017-09-26
申请人： Inertech IP LLC
发明人： Subrata K. Mondal
IPC分类号： H02J3/32
CPC分类号： H02J3/32 , H02J3/1857 , H02J7/345 , H02M7/483 , H02M2001/007 , H02M2007/4835 , Y02E40/16 , Y02E40/26 , Y02E70/40 , Y10T307/344
摘要： Systems and methods for supplying power (both active and reactive) at a medium voltage from a DCSTATCOM to an IT load without using a transformer are disclosed. The DCSTATCOM includes an energy storage device, a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique.

2. 发明授权

US09991713B2 Energy storage system comprising a modular multi-level converter 有权
公开(公告)号：US09991713B2
公开(公告)日：2018-06-05
申请号：US15117094
申请日：2014-02-19
申请人： ABB SCHWEIZ AG
发明人： Tomas Tengner , Christopher Townsend , Hector Zelaya de la Parra , Alireza Nami
IPC分类号： H02M7/483 , H02J3/18 , H02J3/28 , H02J3/36
CPC分类号： H02J3/1857 , H02J3/28 , H02J3/36 , H02M7/483 , H02M2007/4835 , Y02E40/26 , Y02E60/60
摘要： An energy storage system (ESS) for an electrical system includes an energy storage, and a converter interface arranged for connecting the energy storage to the electrical system. The converter interface includes a modular multilevel converter in which each phase leg includes a plurality of series connected cells of which at least one is a half-bridge cell and at least one is a full-bridge cell.

3. 发明申请

US20180123444A1 METHOD AND DEVICE FOR DAMPING VOLTAGE HARMONICS IN A MULTILEVEL POWER CONVERTER 审中-公开
公开(公告)号：US20180123444A1
公开(公告)日：2018-05-03
申请号：US15573046
申请日：2015-05-18
申请人： ABB SCHWEIZ AG
发明人： Aravind MOHANAVEERAMANI , Jean-Philippe HASLER , Suman MAITI
IPC分类号： H02M1/12 , H02J3/18
CPC分类号： H02M5/293 , H02J1/02 , H02J3/1857 , H02M1/12 , H02M7/483 , H02M2005/2932 , Y02E40/26 , Y02E40/30
摘要： A method for reducing lower order harmonics of a multi-level power converter includes at least one phase leg including a plurality of chain-link connected cells each including a capacitor. The method includes, for each phase leg of the converter: obtaining a present reference voltage for use during a present half switching duration; dividing the half switching duration into a plurality of time samples; and at the beginning of each time sample: predicting the reference voltage waveform for the remainder of the half switching duration based on the obtained present reference voltage; predicting the leg output voltage waveform for the remainder of the present half switching duration for the case that no cell is inserted or bypassed in the leg during the time sample, and for the case that one cell is inserted or bypassed in the leg during the time sample; predicting the flux error at the end of the present half switching duration for each of the cases, based on the obtained present reference voltage, the predicted reference voltage waveform and the predicted leg output voltage waveforms; and determining whether to insert or bypass the cell, during the time sample, based on the predicted flux errors.

4. 发明申请

US20170271997A1 STANDBY AND CHARGING OF MODULAR MULTILEVEL CONVERTERS 审中-公开
公开(公告)号：US20170271997A1
公开(公告)日：2017-09-21
申请号：US15617583
申请日：2017-06-08
申请人： ABB Schweiz AG
发明人： Simon Herold , Beat Buchmann
IPC分类号： H02M5/42 , B60M3/00 , H02J7/02
CPC分类号： H02M5/42 , B60M3/00 , H02J3/1857 , H02J7/02 , H02J7/345 , H02M1/36 , H02M7/483 , H02M2001/0032 , H02M2007/4835 , Y02B70/16 , Y02E40/26
摘要： The present invention proposes a hybrid converter branch operating mode for a Modular Multilevel power Converter MMC with MMC cells in distinct subsets operating according to a “pulse blocked” cell operation mode with DC cell voltage increase or according to a “bypass” cell operation mode without DC cell voltage increase. Repeated cell subset assignment and corresponding alternation of cell operating mode allows to reduce or at least manage a mean deviation of the cell capacitor DC voltages of the converter cells. The invention also reduces no-load losses of the MMC in standby mode and a charging voltage in an MMC charging mode.

5. 发明申请

US20170133949A1 Converter For Outputting Reactive Power, And Method For Controlling Said Converter 有权
公开(公告)号：US20170133949A1
公开(公告)日：2017-05-11
申请号：US15318061
申请日：2014-06-13
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： MARTIN PIESCHEL , CHRISTIAN SIEGL , MARKUS WIESINGER
IPC分类号： H02M7/537 , H02M1/32
CPC分类号： H02M7/537 , H02J3/1857 , H02M1/32 , H02M7/49 , Y02E40/26
摘要： A converter outputs reactive power and has three phase branches connected to a phase of an alternating voltage source. Each of the phase branches has a phase module with a series circuit containing two-pole sub modules. A voltage which is dropped across each phase module corresponds to the sum of the voltages which are dropped across the sub modules. The first and the third phase branch are electrically connected to one another by a magnetically coupled throttle pair. A control device controls phase module currents. The control device contains current controllers which are associated with the phase modules, a decoupling unit for decoupling control differences by a computational during control of the phase module currents, a coupling unit for correcting the decoupled computational actuating variables in accordance with the magnetic coupling of the first throttle pair to obtain corrected actuating voltages, and a control unit for driving the sub modules.

6. 发明申请

US20170108888A1 Converter For Symmetrical Reactive Power Compensation, And A Method For Controlling Same 审中-公开
公开(公告)号：US20170108888A1
公开(公告)日：2017-04-20
申请号：US15310474
申请日：2014-05-22
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： MIKE DOMMASCHK , MARTIN PIESCHEL
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： G05F1/70 , H02J3/1821 , H02J3/1842 , H02J3/1857 , H02M5/45 , H02M5/46 , H02M7/483 , H02M7/49 , H02M2007/4835 , Y02E40/22 , Y02E40/26
摘要： A converter for symmetrical reactive power compensation has phase legs whose associated phases of a three-phase AC voltage network can be connected and are interconnected in an insulated star connection. The first phase leg is devoid of sub modules. The second and third phase legs each has a phase module with series-connected bipolar sub modules. A control device controls phase module currents and determines voltages to be set at each phase module. A decoupling unit calculates correction voltages for each phase module as a function of a first connection voltage between the first and second phase legs, a second connection voltage between the second and third phase legs and a first and/or a second control voltage each derived from target currents and the phase module currents of the second or third phase legs. The voltages to be set are derived from the control voltages and correction voltages.

7. 发明申请

US20160149481A1 METHODS AND DEVICES FOR POWER COMPENSATION 有权
标题翻译：用于功率补偿的方法和装置
公开(公告)号：US20160149481A1
公开(公告)日：2016-05-26
申请号：US14903245
申请日：2013-07-19
申请人： ABB TECHNOLOGY LTD
发明人： Jean-Philippe HASLER , Marcio DE OLIVEIRA
IPC分类号： H02M1/42
CPC分类号： H02M1/4208 , H02J3/16 , H02J3/1857 , H02J3/1864 , H02J3/26 , Y02E40/12 , Y02E40/26 , Y02E40/34 , Y02E40/50
摘要： A method is performed in a control device for controlling a power compensation arrangement including a voltage source converter and one or more power compensation branches, each power compensation branch including a thyristor controlled reactor, a thyristor switched reactor or a thyristor controlled capacitor. The voltage source converter and the one or more power compensation branches are connected to a same busbar. The method includes: detecting a request in an electrical power system to which the power compensation arrangement is connected; determining, based on the request, a need for reactive power supply to the electrical power system; providing reactive power by means of the voltage source converter and/or by one or more of the power compensation branches; and compensating, by means of the voltage source converter, any disturbances caused by the power compensation branches when providing the reactive power to the electrical power system. Corresponding devices are also disclosed.
摘要翻译：在用于控制包括电压源转换器和一个或多个功率补偿分支的功率补偿布置的控制装置中执行一种方法，每个功率补偿分支包括可控硅控制电抗器，可控硅开关电抗器或晶闸管控制电容器。电压源转换器和一个或多个功率补偿分支连接到相同的母线。该方法包括：检测在功率补偿装置所连接的电力系统中的请求; 根据要求确定对电力系统的无功供电的需要; 通过电压源转换器和/或由一个或多个功率补偿分支提供无功功率; 并且通过电压源转换器补偿当向电力系统提供无功功率时由功率补偿分支引起的任何扰动。还公开了相应的装置。

8. 发明申请

US20160139578A1 METHODS AND DEVICES FOR CONTROLLING ACTIVE POWER FLOW IN A THREE-PHASE MODULAR MULTILEVEL CONVERTER 审中-公开
标题翻译：用于控制三相模块化多电平转换器中的有功功率流的方法和装置
公开(公告)号：US20160139578A1
公开(公告)日：2016-05-19
申请号：US14897116
申请日：2013-06-12
申请人： ABB TECHNOLOGY LTD
发明人： Jean-Philippe HASLER , Jan KHEIR
IPC分类号： G05B19/042 , G05B19/10 , H02J3/18
CPC分类号： G05B19/042 , G05B19/106 , G05B2219/2639 , H02J3/18 , H02J3/1857 , H02M2007/4835 , Y02E40/26
摘要： The invention relates to methods and devices for controlling unbalanced active power flow in a three-phase modular multilevel converter 20. The converter 20 comprises a first and second converter 4, 5 both comprising three phase legs arranged in a wye-connection. The first and second converters 4, 5 are interconnected in a double-wye connection, and their neutral paths are independently floating. The method 200 comprises: detecting an active power flow in the phase legs; determining a zero-sequence voltage, the determination providing magnitude and phase of the zero-sequence voltage; re-computing the magnitude of the zero-sequence voltage while keeping the phase of the zero-sequence voltage fixed, the magnitude being re-computed with the requirement that the resulting voltage over the phase legs is smaller than or equal to a maximum allowed leg voltage, the re-computed magnitude and the phase giving a re-computed zero-sequence voltage; imposing the re-computed zero-sequence voltage on the neutral point of the first and second converters, thereby reducing the active power flow determining remaining active power based on the re-computed magnitude of the zero-sequence voltage; determining a DC current giving a product with a DC voltage of the first and second converters 4, 5 that will counteract remaining active power; and imposing the DC current on the phase legs.
摘要翻译：本发明涉及用于控制三相模块化多电平转换器20中的不平衡有功功率流的方法和装置。转换器20包括一个第一和第二转换器4,5，它们都包括以三角形连接布置的三相支路。第一和第二转换器4,5以双重双向连接互连，并且其中性路径独立地浮置。方法200包括：检测相腿中的有功功率流; 确定零序电压，所述确定提供零序电压的幅度和相位; 重新计算零序电压的幅度，同时保持零序电压的相位固定，该幅值被重新计算，要求相位支路上产生的电压小于或等于最大允许支路电压，重新计算的幅度和给出重新计算的零序电压的相位; 在所述第一和第二转换器的中性点上施加重新计算的零序电压，从而基于所述零序电压的重新计算的幅度来减少确定剩余有功功率的有功功率流; 确定产生具有将抵消剩余有功功率的第一和第二转换器4,5的直流电压的产品的直流电流; 并在相位腿施加直流电流。

9. 发明授权

US09287699B2 Bypass control structure of link unit of chain circuit active power filter and method 有权
标题翻译：链路有源电力滤波器链路单元旁路控制结构及方法
公开(公告)号：US09287699B2
公开(公告)日：2016-03-15
申请号：US14421447
申请日：2013-02-21
申请人： ZHUHAI WANLIDA ELECTRICAL AUTOMATION CO., LTD
发明人： Junling Chen , Mingxing Huang , Huailin Yu , Chaoxian Huang , Chunyuan Su , Jie Li , Yanqing Wei , Guodong Sa
IPC分类号： H02J3/18 , H02H7/122 , H02J3/01 , H02M7/5387
CPC分类号： H02H7/1225 , H02J3/01 , H02J3/18 , H02J3/1821 , H02M7/53871 , Y02E40/22 , Y02E40/26 , Y02E40/30 , Y02E40/40
摘要： The present application relates to a bypass control structure of a link unit of a chain circuit active power filter and a control method thereof. The bypass control structure includes a main controller, a chain circuit multilevel inverter and a reactor connected to an external electric network. The chain circuit multilevel inverter generally comprises multiple levels of link units. A state of the switch means in each link unit in a chain circuit active power filer is detected in real time, and types of detected faults are classified so as to bypass the fault of the link unit with fault by utilizing the control of the switch means without fault in the link unit with fault. Normal operating, stability, reliability, high efficiency of the active power filter are ensured. Therefore, the problem that the operation must be suspended until the fault is eliminated is solved without any additional bypass means.
摘要翻译：本发明涉及链路有源电力滤波器的链路单元的旁路控制结构及其控制方法。旁路控制结构包括主控制器，链路电路多电平逆变器和连接到外部电网的电抗器。链电路多电平逆变器通常包括多个级联的链路单元。在链路电路有功功率滤波器的每个链路单元中的切换装置的状态被实时地检测，并且检测到的故障的类型被分类，以便通过利用开关装置的控制来绕过具有故障的链路单元的故障没有故障的链路单元故障。确保有源电力滤波器的正常工作，稳定性，可靠性，高效率。因此，在没有任何附加的旁路装置的情况下解决了必须暂停直到故障消除的操作的问题。

10. 发明授权

US08912767B2 Reactive energy compensator and associated method for balancing half-bus voltages 有权
标题翻译：用于平衡半总线电压的无功补偿器和相关方法
公开(公告)号：US08912767B2
公开(公告)日：2014-12-16
申请号：US13736416
申请日：2013-01-08
申请人： GE Energy Power Conversion Technology Ltd.
发明人： Mathieu Morati , Matthieu Urbain , Daniel Girod
IPC分类号： H02M1/42 , H02M7/537 , H02J3/18 , H02M7/487
CPC分类号： H02M7/537 , H02J3/1842 , H02J3/1857 , H02M7/487 , Y02E40/22 , Y02E40/26
摘要： A reactive energy compensator that can be electrically connected to an AC electrical network, including at least one input direct voltage bus, at least one voltage inverter including switches and first and second capacitors having first and second voltages at their terminals, control means for the switches, including computation means capable of generating a target control current, means for combining the target control current and the output current from the inverter, means for transmitting a control signal capable of driving the switches, and correction means for the control signals of the switches, the correction means being capable of adding a balancing current to the target control current, the balancing current being able to correct the target control current so as to reduce the difference between the values of the first and second voltages, the target control current being increased for an even harmonic of the network frequency.
摘要翻译：一种无功能量补偿器，其可以电连接到AC电网，包括至少一个输入直流电压总线，至少一个包括开关的电压逆变器以及在其端子具有第一和第二电压的第一和第二电容器，用于开关的控制装置包括能够产生目标控制电流的计算装置，用于组合来自逆变器的目标控制电流和输出电流的装置，用于发送能够驱动开关的控制信号的装置，以及用于开关的控制信号的校正装置，所述校正装置能够向所述目标控制电流添加平衡电流，所述平衡电流能够校正所述目标控制电流，以便减小所述第一和第二电压的值之间的差异，所述目标控制电流被增加以用于网络频率的均匀谐波。

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