公开(公告)号：US20140376287A1

公开(公告)日：2014-12-25

申请号：US13922401

申请日：2013-06-20

申请人： Mehdi Narimani ,  Bin Wu ,  Zhongyuan Cheng ,  Navid R. Zargari

发明人： Mehdi Narimani ,  Bin Wu ,  Zhongyuan Cheng ,  Navid R. Zargari

IPC分类号： H02M3/07

CPC分类号： H02M3/07 ,  H02M7/483 ,  H02M7/487 ,  H02M7/49 ,  H02M7/5395 ,  H02M2007/53876

摘要： Nested neutral point clamped (NNPC) multilevel power converter stages and systems are presented, in which the converter stage includes an NPC inverter core circuit with a flying (switched) capacitor nesting circuit, with the switches of the NPC core and the switched capacitor circuit being gated using selected redundant switching states to control the voltage of the switched capacitors to achieve a multilevel output voltage having equally spaced voltage step values. Multiple inverter stages can meet cascaded or connected in various configurations to implement single or multiphase power conversion systems, and higher output voltages can be achieved by forming to converter stages into an H-bridge configuration, and connecting multiple H-bridge stages in series with one another.

摘要翻译： 提出了嵌套中性点钳位（NNPC）多电平转换器级和系统，其中转换器级包括具有飞行（开关）电容器嵌套电路的NPC逆变器核心电路，NPC内核和开关电容器电路的开关为 门控使用所选择的冗余切换状态来控制开关电容器的电压以实现具有相等间隔的电压阶跃值的多电平输出电压。 多个逆变器级可以满足级联或连接在各种配置中以实现单相或多相功率转换系统，并且可以通过将转换器级形成H桥配置并且将多个H桥级串联连接到一起来实现更高的输出电压 另一个。

公开(公告)号：US5835364A

公开(公告)日：1998-11-10

申请号：US873844

申请日：1997-06-12

申请人： Frank A. DeWinter ,  Navid R. Zargari ,  Bin Wu ,  Yuan Xiao

发明人： Frank A. DeWinter ,  Navid R. Zargari ,  Bin Wu ,  Yuan Xiao

IPC分类号： H02M7/19 ,  H02M1/14

CPC分类号： H02M7/19

摘要： A PWM based converter including a Y-.DELTA., Y--Y transformer (or a .DELTA.--.DELTA., .DELTA.-Y transformer) wherein the Y-.DELTA. portion of the transformer phase shifts input voltage by 30.degree. with respect to the Y--Y portion of the transformer and thereby eliminates many low order supply line harmonics. The rectifier also includes two series connected PWM switching rectifiers, one rectifier receiving input voltages from the Y--Y portion of the transformer and the other rectifier receiving input voltages from the Y-.DELTA. portion of the transformer, and a controller for controlling the first and second rectifiers so as to eliminate low order harmonics on the supply lines that are not eliminated by the transformer. A capacitive bank is required between each rectifier and the transformer.

摘要翻译： 一种基于PWM的转换器，包括Y-DELTA，YY变压器（或DELTA-DELTA，DELTA-Y变压器），其中变压器的Y-DELTA部分将输入电压相对于变压器的YY部分移位30°， 从而消除了许多低阶电源线谐波。 整流器还包括两个串联的PWM开关整流器，一个整流器接收来自变压器的YY部分的输入电压，另一个整流器接收来自变压器的Y-DELTA部分的输入电压，以及用于控制第一和第二整流器 以消除电源线上未被变压器消除的低次谐波。 每个整流器和变压器之间需要一个电容组。

公开(公告)号：US09559541B2

公开(公告)日：2017-01-31

申请号：US14597261

申请日：2015-01-15

申请人： Zhongyuan Cheng ,  Bin Wu ,  Navid R. Zargari ,  Kai Tian ,  David Dewei Xu

发明人： Zhongyuan Cheng ,  Bin Wu ,  Navid R. Zargari ,  Kai Tian ,  David Dewei Xu

IPC分类号： H02M5/458 ,  H02M7/06 ,  H02J7/00 ,  H02M7/483

CPC分类号： H02J7/0072 ,  H02J7/0065 ,  H02M1/36 ,  H02M7/483 ,  H02M2007/4835

摘要： Methods and charging apparatus are presented for charging cell capacitors of a multilevel power conversion system, in which an auxiliary charging source is selectively applied across DC bus terminals while one or more selected multilevel converter cells are alternately switched between a first state to bypass the selected cell or cells and a second state to charge the cell capacitor or capacitors of the selected cell via charging current from the auxiliary charging source.

摘要翻译： 提出了用于为多电平电力转换系统的电池电容器充电的方法和充电装置，其中辅助充电源被选择性地施加在直流总线端子上，而一个或多个所选择的多电平转换器单元在第一状态之间交替切换以绕过所选择的单元 或单元以及第二状态，以通过来自辅助充电源的充电电流对所选择的单元的单元电容器或电容器进行充电。

公开(公告)号：US09083230B2

公开(公告)日：2015-07-14

申请号：US13922401

申请日：2013-06-20

申请人： Mehdi Narimani ,  Bin Wu ,  Zhongyuan Cheng ,  Navid R. Zargari

发明人： Mehdi Narimani ,  Bin Wu ,  Zhongyuan Cheng ,  Navid R. Zargari

IPC分类号： H02M7/537 ,  H02M3/07 ,  H02M7/483 ,  H02M7/487 ,  H02M7/49 ,  H02M7/5395 ,  H02M7/5387

CPC分类号： H02M3/07 ,  H02M7/483 ,  H02M7/487 ,  H02M7/49 ,  H02M7/5395 ,  H02M2007/53876

摘要： Nested neutral point clamped (NNPC) multilevel power converter stages and systems are presented, in which the converter stage includes an NPC inverter core circuit with a flying (switched) capacitor nesting circuit, with the switches of the NPC core and the switched capacitor circuit being gated using selected redundant switching states to control the voltage of the switched capacitors to achieve a multilevel output voltage having equally spaced voltage step values. Multiple inverter stages can meet cascaded or connected in various configurations to implement single or multiphase power conversion systems, and higher output voltages can be achieved by forming to converter stages into an H-bridge configuration, and connecting multiple H-bridge stages in series with one another.

摘要翻译： 提出了嵌套中性点钳位（NNPC）多电平转换器级和系统，其中转换器级包括具有飞行（开关）电容器嵌套电路的NPC逆变器核心电路，NPC内核和开关电容器电路的开关为 门控使用所选择的冗余切换状态来控制开关电容器的电压以实现具有相等间隔的电压阶跃值的多电平输出电压。 多个逆变器级可以满足级联或连接在各种配置中以实现单相或多相功率转换系统，并且可以通过将转换器级形成H桥配置并且将多个H桥级串联连接到一起来实现更高的输出电压 另一个。

公开(公告)号：US20130141950A1

公开(公告)日：2013-06-06

申请号：US13756655

申请日：2013-02-01

申请人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng ,  Lixiang Wei

发明人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng ,  Lixiang Wei

IPC分类号： H02J3/36

CPC分类号： H02J3/36 ,  H01F3/12 ,  H01F30/06 ,  H01F37/00 ,  H01F38/023 ,  H01F2038/026 ,  H02M1/14 ,  H02M5/4585 ,  H02M2001/123

摘要： A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located, with one or more shunt structures providing a magnetic flux path between intermediate portions of the first and second legs.

公开(公告)号：US20130063991A1

公开(公告)日：2013-03-14

申请号：US13595740

申请日：2012-08-27

申请人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng

发明人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng

IPC分类号： H02M7/48

CPC分类号： H02M7/48 ,  H02J3/383 ,  Y02E10/563

摘要： A system includes a low switching frequency power converter configured to be coupled to a solar cell, wherein the low switching frequency power converter is configured to generate alternating current (AC) power based on low voltage direct current (DC) power transmitted from the solar cell and transmit the converted AC power. The system also include a multi-pulse transformer configured to receive the converted AC power and generate transformed power based on the converted AC power, wherein the transformed power comprises power at a voltage level that differs from the a voltage level of the converted AC power.

摘要翻译： 一种系统包括配置为耦合到太阳能电池的低开关频率功率转换器，其中低开关频率功率转换器被配置为基于从太阳能电池传输的低压直流（DC）功率产生交流（AC）功率 并传送转换后的交流电源。 该系统还包括多脉冲变压器，其被配置为接收经转换的AC电力并基于转换的AC电力产生变换的功率，其中变换的功率包括不同于转换的AC功率的电压电平的电压电平的功率。

公开(公告)号：US20110310642A1

公开(公告)日：2011-12-22

申请号：US12819878

申请日：2010-06-21

申请人： Jingya Dai ,  Navid R. Zargari ,  Bin Wu ,  David Dewei Xu ,  Jiacheng Wang

发明人： Jingya Dai ,  Navid R. Zargari ,  Bin Wu ,  David Dewei Xu ,  Jiacheng Wang

IPC分类号： H02M5/45

CPC分类号： H02M5/458 ,  H02J3/386 ,  H02M1/126 ,  H02M7/06 ,  H02M7/1626 ,  Y02E10/725 ,  Y02E10/763

摘要： A system comprising low cost topology for power converter systems is provided. The system takes advantage of the voltage-boost characteristic of a current source inverter (CSI) and utilizes a PWM CSI as a grid-side converter for power generation systems. Moreover, the generator-side converter employs low-cost devices, such as, but not limited to diode bridge, thyristor bridge, and/or a combination of diodes and thyristors, and accordingly simplifies generator-side converter and control. Further, the system provides a wider range of operation than traditional voltage source converter based topologies that utilize a voltage source inverter (VSI) as the grid-side convertor along with a diode rectifier as the generator-side converter.

摘要翻译： 提供了一种包括用于功率转换器系统的低成本拓扑的系统。 该系统利用电流源逆变器（CSI）的升压电压特性，并利用PWM CSI作为发电系统的并网转换器。 此外，发电机侧转换器采用低成本器件，例如但不限于二极管桥，晶闸管桥和/或二极管和晶闸管的组合，因此简化了发电机侧转换器和控制。 此外，与基于电压源逆变器（VSI）作为电网侧转换器以及二极管整流器作为发生器侧转换器的传统的基于电压源转换器的拓扑结构相比，该系统提供了更广泛的操作。

公开(公告)号：US08044631B2

公开(公告)日：2011-10-25

申请号：US12345916

申请日：2008-12-30

申请人： Jingya Dai ,  Yongqiang Lang ,  Bin Wu ,  Dewei Xu ,  Navid R. Zargari

发明人： Jingya Dai ,  Yongqiang Lang ,  Bin Wu ,  Dewei Xu ,  Navid R. Zargari

IPC分类号： H02P27/04

CPC分类号： H02M7/53873 ,  H02M2007/53876

摘要： Control systems, methods and power conversion systems are presented for controlling harmonic distortion, in which multi-sampling space vector modulation (SVM) is employed for controlling power converter switching devices, with a reference vector being sampled two or more times during each SVM period to update the SVM dwell times more than once during each SVM cycle.

摘要翻译： 提出了用于控制谐波失真的控制系统，方法和功率转换系统，其中采用多采样空间矢量调制（SVM）来控制功率转换器开关装置，其中参考矢量在每个SVM周期期间被采样两次或更多次 在每个SVM循环期间多次更新SVM驻留时间。

公开(公告)号：US08698335B2

公开(公告)日：2014-04-15

申请号：US12819878

申请日：2010-06-21

申请人： Jingya Dai ,  Navid R. Zargari ,  Bin Wu ,  David Dewei Xu ,  Jiacheng Wang

发明人： Jingya Dai ,  Navid R. Zargari ,  Bin Wu ,  David Dewei Xu ,  Jiacheng Wang

IPC分类号： F03D9/00 ,  H02P9/04

CPC分类号： H02M5/458 ,  H02J3/386 ,  H02M1/126 ,  H02M7/06 ,  H02M7/1626 ,  Y02E10/725 ,  Y02E10/763

摘要： A system comprising low cost topology for power converter systems is provided. The system takes advantage of the voltage-boost characteristic of a current source inverter (CSI) and utilizes a PWM CSI as a grid-side converter for power generation systems. Moreover, the generator-side converter employs low-cost devices, such as, but not limited to diode bridge, thyristor bridge, and/or a combination of diodes and thyristors, and accordingly simplifies generator-side converter and control. Further, the system provides a wider range of operation than traditional voltage source converter based topologies that utilize a voltage source inverter (VSI) as the grid-side convertor along with a diode rectifier as the generator-side converter.

摘要翻译： 提供了一种包括用于功率转换器系统的低成本拓扑的系统。 该系统利用电流源逆变器（CSI）的升压电压特性，并利用PWM CSI作为发电系统的并网转换器。 此外，发电机侧转换器采用低成本器件，例如但不限于二极管桥，晶闸管桥和/或二极管和晶闸管的组合，因此简化了发电机侧转换器和控制。 此外，与基于电压源逆变器（VSI）作为电网侧转换器以及二极管整流器作为发生器侧转换器的传统的基于电压源转换器的拓扑结构相比，该系统提供了更广泛的操作。

公开(公告)号：US08537575B2

公开(公告)日：2013-09-17

申请号：US13756655

申请日：2013-02-01

申请人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng ,  Lixiang Wei

发明人： Yuan Xiao ,  Navid R. Zargari ,  Zhongyuan Cheng ,  Lixiang Wei

IPC分类号： H02M5/45 ,  H01F27/36

CPC分类号： H02J3/36 ,  H01F3/12 ,  H01F30/06 ,  H01F37/00 ,  H01F38/023 ,  H01F2038/026 ,  H02M1/14 ,  H02M5/4585 ,  H02M2001/123

摘要： A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located, with one or more shunt structures providing a magnetic flux path between intermediate portions of the first and second legs.

摘要翻译： 因此，提出了一种电力转换系统和直流链路扼流圈，其中连续的芯结构设置有围绕四个或更多个绕组定位的第一和第二支脚，一个或多个分流结构提供在 第一和第二条腿。