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1.发明授权公开(公告)号：US09520800B2
公开(公告)日：2016-12-13
申请号：US14151142
申请日：2014-01-09
申请人： Kai Tian , Zhongyuan Cheng , Bin Wu , David Dewei Xu
发明人： Kai Tian , Zhongyuan Cheng , Bin Wu , David Dewei Xu
IPC分类号： H02M5/458 , H02M7/483 , H02M7/487 , H02M1/12 , H02M7/5387
CPC分类号： H02M5/458 , H02M5/4585 , H02M7/483 , H02M7/487 , H02M2001/123 , H02M2007/53876
摘要： Multilevel converters and space vector modulation operating methods are presented in which fewer than all possible switching states are employed for space vector modulation of rectifier and inverter circuits to promote common mode voltage contribution cancellation or reduction therebetween and by using subsets of possible space vector modulation switching states associated with minimal positive or negative common mode voltages and in some cases using virtual vectors which have zero common mode voltages to eliminate the 3rd order harmonic components in common mode voltage as well as to reduce common mode voltage affects associated with multilevel inverter stages.
摘要翻译： 提出了多电平转换器和空间矢量调制操作方法，其中采用少于所有可能的开关状态用于整流器和逆变器电路的空间矢量调制，以促进其间的共模电压贡献消除或减小，并且通过使用可能的空间矢量调制开关状态的子集 与最小的正或负共模电压相关联，并且在一些情况下使用具有零共模电压的虚拟矢量以消除共模电压中的三阶谐波分量，以及降低与多电平逆变器级相关联的共模电压影响。
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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
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。
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公开(公告)号：US20160211762A1
公开(公告)日：2016-07-21
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
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。
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4.发明申请公开(公告)号：US20150194902A1
公开(公告)日：2015-07-09
申请号：US14151142
申请日：2014-01-09
申请人： Kai Tian , Zhongyuan Cheng , Bin Wu , David Dewei Xu
发明人： Kai Tian , Zhongyuan Cheng , Bin Wu , David Dewei Xu
IPC分类号： H02M5/458
CPC分类号： H02M5/458 , H02M5/4585 , H02M7/483 , H02M7/487 , H02M2001/123 , H02M2007/53876
摘要： Multilevel converters and space vector modulation operating methods are presented in which fewer than all possible switching states are employed for space vector modulation of rectifier and inverter circuits to promote common mode voltage contribution cancellation or reduction therebetween and by using subsets of possible space vector modulation switching states associated with minimal positive or negative common mode voltages and in some cases using virtual vectors which have zero common mode voltages to eliminate the 3rd order harmonic components in common mode voltage as well as to reduce common mode voltage affects associated with multilevel inverter stages.
摘要翻译： 提出了多电平转换器和空间矢量调制操作方法，其中采用少于所有可能的开关状态用于整流器和逆变器电路的空间矢量调制，以促进其间的共模电压贡献消除或减小，并且通过使用可能的空间矢量调制开关状态的子集 与最小的正或负共模电压相关联，并且在一些情况下使用具有零共模电压的虚拟矢量以消除共模电压中的三阶谐波分量，以及降低与多电平逆变器级相关联的共模电压影响。
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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
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。
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6.发明授权Grid fault ride-through for current source converter-based wind energy conversion systems 有权基于电流源转换器的风能转换系统的电网故障穿越公开(公告)号：US08587160B2
公开(公告)日：2013-11-19
申请号：US12776118
申请日：2010-05-07
申请人： Jingya Dai , David Dewei Xu , Bin Wu , Navid Zargari
发明人： Jingya Dai , David Dewei Xu , Bin Wu , Navid Zargari
IPC分类号： G05F3/02
CPC分类号： H02J3/386 , F05B2270/10711 , H02M5/4505 , Y02E10/763
摘要： Current source converter (CSC) based wind energy power conversion systems (WECS) and methods are presented in which a unified DC link current control scheme is employed to facilitate grid fault ride-through conditions, with a multiple-mode converter control system that combines the power flow control capabilities of the generator-side and grid-side converters, in which transitions between normal operation and fault condition are achieved automatically by monitoring the grid voltage without the need for, or with partial additional ride-through components.
摘要翻译： 提出了基于电流源转换器（CSC）的风能电力转换系统（WECS）和方法，其中采用统一的DC链路电流控制方案来促进电网故障穿越条件，多模转换器控制系统将 发电机侧和电网侧转换器的功率流控制能力通过监视电网电压而不需要或部分额外的穿越部件自动实现正常运行和故障状态之间的转换。
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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。
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公开(公告)号：US08653931B2
公开(公告)日：2014-02-18
申请号：US12913455
申请日：2010-10-27
申请人： David Dewei Xu , Ning Zhu , Yuan Xiao , Bin Wu
发明人： David Dewei Xu , Ning Zhu , Yuan Xiao , Bin Wu
IPC分类号： H01F27/24
CPC分类号： H02P9/02 , H01F3/14 , H01F37/00 , H02M1/126 , H02M7/487 , H02M2001/0064 , H02M2001/123 , H02P2201/13
摘要： Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.
摘要翻译： 电源转换系统和集成多相扼流圈，提供高共模扼流圈，具有圆形和三角形形状的差分扼流圈电感，用于电机驱动器和其他电源转换应用中的并行差分滤波和共模电压阻塞。
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公开(公告)号：US20120106210A1
公开(公告)日：2012-05-03
申请号：US12913455
申请日：2010-10-27
申请人： David Dewei XU , Ning Zhu , Yuan Xiao , Bin Wu
发明人： David Dewei XU , Ning Zhu , Yuan Xiao , Bin Wu
CPC分类号： H02P9/02 , H01F3/14 , H01F37/00 , H02M1/126 , H02M7/487 , H02M2001/0064 , H02M2001/123 , H02P2201/13
摘要： Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.
摘要翻译： 电源转换系统和集成多相扼流圈，提供高共模扼流圈，具有圆形和三角形形状的差分扼流圈电感，用于电机驱动器和其他电源转换应用中的并行差分滤波和共模电压阻塞。
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10.发明申请GRID FAULT RIDE-THROUGH FOR CURRENT SOURCE CONVERTER-BASED WIND ENERGY CONVERSION SYSTEMS 有权基于电流转换器的风力转换系统的故障排除公开(公告)号：US20110057444A1
公开(公告)日：2011-03-10
申请号：US12776118
申请日：2010-05-07
申请人： Jingya Dai , David Dewei Xu , Bin Wu , Navid Zargari
发明人： Jingya Dai , David Dewei Xu , Bin Wu , Navid Zargari
CPC分类号： H02J3/386 , F05B2270/10711 , H02M5/4505 , Y02E10/763
摘要： Current source converter (CSC) based wind energy power conversion systems (WECS) and methods are presented in which a unified DC link current control scheme is employed to facilitate grid fault ride-through conditions, with a multiple-mode converter control system that combines the power flow control capabilities of the generator-side and grid-side converters, in which transitions between normal operation and fault condition are achieved automatically by monitoring the grid voltage without the need for, or with partial additional ride-through components.
摘要翻译： 提出了基于电流源转换器（CSC）的风能电力转换系统（WECS）和方法，其中采用统一的DC链路电流控制方案来促进电网故障穿越条件，多模转换器控制系统将 发电机侧和电网侧转换器的功率流控制能力通过监视电网电压而不需要或部分额外的穿越部件自动实现正常运行和故障状态之间的转换。
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