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1. 发明授权

US08823416B2 Use of PLL stability for islanding detection 有权
标题翻译：使用PLL稳定性进行孤岛检测
公开(公告)号：US08823416B2
公开(公告)日：2014-09-02
申请号：US13182978
申请日：2011-07-14
申请人： Timothy N. Thacker , Dushan Boroyevich , Fred Wang , Rolando Burgos
发明人： Timothy N. Thacker , Dushan Boroyevich , Fred Wang , Rolando Burgos
IPC分类号： H03L7/085 , H02J3/38
CPC分类号： H03L7/085 , H02J3/382 , H02J3/383 , H02J3/386 , H02J2003/388 , Y02E10/563 , Y02E10/763 , Y10T307/735
摘要： A phase detector for a phase-locked loop includes a phase detector that is configured to become unstable, oscillate and drift rapidly in frequency in a predictable manner when a reference frequency signal is not available. When applied, for example, to a power converter connected to a power distribution grid, the predictable oscillatory and rapid frequency drift behavior when the phase detector is unstable allows very rapid and reliable detection of disconnection from the grid, referred to as islanding.
摘要翻译：用于锁相环的相位检测器包括相位检测器，其被配置为当参考频率信号不可用时以可预测的方式变得不稳定，振荡和快速漂移。当应用于例如连接到配电网的功率转换器时，当相位检测器不稳定时，可预测的振荡和快速频率漂移行为允许非常快速和可靠地检测到被称为孤岛的电网断开。

2. 发明授权

US09140731B2 Algorithm and implementation system for measuring impedance in the D-Q domain 有权
标题翻译：用于测量D-Q域中阻抗的算法和实现系统
公开(公告)号：US09140731B2
公开(公告)日：2015-09-22
申请号：US13618513
申请日：2012-09-14
申请人： Gerald Francis , Rolando Burgos , Dushan Boroyevich , Fred Wang , Zhiyu Shen , Paolo Mattavelli , Kamiar Karimi , Sheau-Wei Johnny Fu
发明人： Gerald Francis , Rolando Burgos , Dushan Boroyevich , Fred Wang , Zhiyu Shen , Paolo Mattavelli , Kamiar Karimi , Sheau-Wei Johnny Fu
IPC分类号： G01R27/02 , G01R27/16 , H02J3/38
CPC分类号： G01R27/02 , G01R27/14 , G01R27/16 , H02J3/38
摘要： A controller and infrastructure for an impedance analyzer measures responses to perturbations to respective phases of a multi-phase system at an interface between stages thereof (which may be considered as a source and load in regard to each other), such as a multi-phase electrical power system, to determine a transfer function for each phase of the multi-phase system from which the impedance of each of the source and load can be calculated, particularly for assessing the stability of the multi-phase system.
摘要翻译：用于阻抗分析仪的控制器和基础设施测量对其相（其可以被认为是相互之间的源和负载）之间的接口处的多相系统的相位的扰动的响应，诸如多相电力系统，以确定可以计算每个源和负载的阻抗的多相系统的每个相的传递函数，特别是用于评估多相系统的稳定性。

3. 发明授权

US09136773B2 Method of evaluating and ensuring stability of AC/DC power systems 有权
标题翻译：评估和确保交流/直流电力系统稳定性的方法
公开(公告)号：US09136773B2
公开(公告)日：2015-09-15
申请号：US13608213
申请日：2012-09-10
申请人： Rolando Burgos , Dushan Boroyevich , Fred Wang , Kamiar Karimi
发明人： Rolando Burgos , Dushan Boroyevich , Fred Wang , Kamiar Karimi
IPC分类号： H02M5/458 , H02M7/217 , H02M1/00
CPC分类号： H02M5/4585 , H02M7/217 , H02M7/219 , H02M2001/0012
摘要： Approximating loci of eigenvalues or characteristic gains of a return ratio matrix of a model of a multi-phase power converter circuit by the loci of the d-d and q-q elements of said synchronous frame of reference applied to said model, allows determination and assessment of stability of the circuit or forbidden operational parameters of the combination of an AC power source and a power converter at an interface thereof by application of a standard Nyquist stability criterion.
摘要翻译：通过应用于所述模型的所述同步参考系的dd和qq元素的轨迹，多相功率转换器电路的模型的特征值的近似轨迹或特征增益的特征增益允许确定和评估稳定性通过应用标准奈奎斯特稳定性标准在其接口处组合AC电源和功率转换器的电路或禁止的操作参数。

4. 发明授权

US08570774B2 Electrical power system with high-density pulse width modulated (PWM) rectifier 有权
标题翻译：具有高密度脉宽调制（PWM）整流器的电力系统
公开(公告)号：US08570774B2
公开(公告)日：2013-10-29
申请号：US12511859
申请日：2009-07-29
申请人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
发明人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
IPC分类号： H02M1/12
CPC分类号： H02M7/219 , H02M1/15
摘要： An electrical power system includes an alternating current (AC) power source configured to output an AC signal, a single phase pulse-width modulated (PWM) rectifier coupled to the AC power source and to an electrical load; a DC link capacitor coupled in parallel to the load and the PWM rectifier; and an active ripple energy storage circuit. The active ripple energy storage circuit has a first terminal, a second terminal and a third terminal, the active ripple energy storage circuit being coupled in parallel to the electrical load, the PWM rectifier and the DC link capacitor via the first terminal and the second terminal, the third terminal being coupled to the second terminal, the active ripple energy storage circuit being configured to selectively absorb and discharge at least part of the ripple energy.
摘要翻译：电力系统包括被配置为输出AC信号的交流（AC）电源，耦合到AC电源和电负载的单相脉宽调制（PWM）整流器; 与负载和PWM整流器并联耦合的直流链路电容器; 和一个有源纹波储能电路。主动波纹能量存储电路具有第一端子，第二端子和第三端子，主动纹波能量存储电路经由第一端子和第二端子并联耦合到电气负载，PWM整流器和DC链路电容器，所述第三端子耦合到所述第二端子，所述有源纹波能量存储电路被配置为选择性地吸收和放电至少部分所述纹波能量。

5. 发明申请

US20130076332A1 Method of Evaluating and Ensuring Stability of AC/DC Power Systems 有权
标题翻译：评估和确保交流/直流电力系统稳定性的方法
公开(公告)号：US20130076332A1
公开(公告)日：2013-03-28
申请号：US13608213
申请日：2012-09-10
申请人： Rolando Burgos , Dushan Boroyevich , Fred Wang , Kamiar Karimi
发明人： Rolando Burgos , Dushan Boroyevich , Fred Wang , Kamiar Karimi
IPC分类号： G05F3/02
CPC分类号： H02M5/4585 , H02M7/217 , H02M7/219 , H02M2001/0012
摘要： Approximating loci of eigenvalues or characteristic gains of a return ratio matrix of a model of a multi-phase power converter circuit by the loci of the d-d and q-q elements of said synchronous frame of reference applied to said model, allows determination and assessment of stability of the circuit or forbidden operational parameters of the combination of an AC power source and a power converter at an interface thereof by application of a standard Nyquist stability criterion.
摘要翻译：通过应用于所述模型的所述同步参考系的dd和qq元素的轨迹，多相功率转换器电路的模型的特征值的近似轨迹或特征增益的特征增益允许确定和评估稳定性通过应用标准奈奎斯特稳定性标准在其接口处组合AC电源和功率转换器的电路或禁止的操作参数。

6. 发明申请

US20100027304A1 ELECTRICAL POWER SYSTEM WITH HIGH-DENSITY PULSE WIDTH MODULATED (PWM) RECTIFIER 有权
标题翻译：具有高密度脉冲宽度调制（PWM）整流器的电力系统
公开(公告)号：US20100027304A1
公开(公告)日：2010-02-04
申请号：US12511859
申请日：2009-07-29
申请人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
发明人： Ruxi Wang , Fred Wang , Rolando Burgos , Dushan Boroyevich , Kaushik Rajashekara , Stephen A. Long
IPC分类号： H02M7/04
CPC分类号： H02M7/219 , H02M1/15
摘要： An electrical power system includes an alternating current (AC) power source configured to output an AC signal, a single phase pulse-width modulated (PWM) rectifier coupled to the AC power source and to an electrical load; a DC link capacitor coupled in parallel to the load and the PWM rectifier; and an active ripple energy storage circuit. The active ripple energy storage circuit has a first terminal, a second terminal and a third terminal, the active ripple energy storage circuit being coupled in parallel to the electrical load, the PWM rectifier and the DC link capacitor via the first terminal and the second terminal, the third terminal being coupled to the second terminal, the active ripple energy storage circuit being configured to selectively absorb and discharge at least part of the ripple energy
摘要翻译：电力系统包括被配置为输出AC信号的交流（AC）电源，耦合到AC电源和电负载的单相脉宽调制（PWM）整流器; 与负载和PWM整流器并联耦合的直流链路电容器; 和一个有源纹波储能电路。主动波纹能量存储电路具有第一端子，第二端子和第三端子，主动纹波能量存储电路经由第一端子和第二端子并联耦合到电气负载，PWM整流器和DC链路电容器，所述第三端子耦合到所述第二端子，所述有源纹波能量存储电路被配置为选择性地吸收和放电所述纹波能量的至少一部分

7. 发明授权

US09071141B2 Two-stage single phase bi-directional PWM power converter with DC link capacitor reduction 有权
标题翻译：具有直流链路电容的两级单相双向PWM功率转换器
公开(公告)号：US09071141B2
公开(公告)日：2015-06-30
申请号：US13441246
申请日：2012-04-06
申请人： Dong Dong , Dushan Boroyevich , Ruxi Wang , Fred Wang
发明人： Dong Dong , Dushan Boroyevich , Ruxi Wang , Fred Wang
IPC分类号： H02M7/797 , H02M3/158 , H02M7/48 , H02J1/10 , H02J3/32 , H02M1/00 , H02J3/38
CPC分类号： H02M3/1582 , H02J1/10 , H02J3/32 , H02J3/383 , H02J3/386 , H02M7/48 , H02M7/797 , H02M2001/007 , Y02B70/1425 , Y02E10/563 , Y02E10/566 , Y02E10/763
摘要： DC link capacitance in a bi-directional AC/DC power converter using a full-bridge or H-bridge switching circuit can be greatly reduced and the power density of the power converter correspondingly increased by inclusion of a bi-directional synchronous rectifier (SR) DC/DC converter as a second stage of the power converter and controlling the second stage with a control loop having a transfer function common to both buck and boost modes of operation of the bi-directional SR DC/DC converter and a resonant transfer function to increase gain at the ripple voltage frequency (twice the AC line frequency) to control the duty cycle of the switches of the bi-directional SR DC/DC stage and controlling the duty cycle of the switches of the full-bridge or H-bridge switching circuit using a control loop including a notch filter at the ripple voltage frequency.
摘要翻译：使用全桥或H桥开关电路的双向AC / DC电力转换器中的直流链路电容可以大大降低，并且功率转换器的功率密度通过包括双向同步整流器（SR）而相应地增加， DC / DC转换器作为功率转换器的第二级，并且利用具有与双向SR DC / DC转换器的降压和升压工作模式共同的传递函数的控制回路来控制第二级，并且共振传递函数在纹波电压频率（交流线路频率的两倍）下增加增益，以控制双向SR DC / DC级的开关占空比，并控制全桥或H桥开关开关的占空比使用包括纹波电压频率的陷波滤波器的控制回路。

8. 发明申请

US20120257429A1 TWO-STAGE SINGLE PHASE BI-DIRECTIONAL PWM POWER CONVERTER WITH DC LINK CAPACITOR REDUCTION 有权
标题翻译：具有直流链路电容减少的两级单相双向PWM功率转换器
公开(公告)号：US20120257429A1
公开(公告)日：2012-10-11
申请号：US13441246
申请日：2012-04-06
申请人： Dong Dong , Dushan Boroyevich , Ruxi Wang , Fred Wang
发明人： Dong Dong , Dushan Boroyevich , Ruxi Wang , Fred Wang
IPC分类号： H02M7/217 , H02M7/5387
CPC分类号： H02M3/1582 , H02J1/10 , H02J3/32 , H02J3/383 , H02J3/386 , H02M7/48 , H02M7/797 , H02M2001/007 , Y02B70/1425 , Y02E10/563 , Y02E10/566 , Y02E10/763
摘要： DC link capacitance in a bi-directional AC/DC power converter using a full-bridge or H-bridge switching circuit can be greatly reduced and the power density of the power converter correspondingly increased by inclusion of a bi-directional synchronous rectifier (SR) DC/DC converter as a second stage of the power converter and controlling the second stage with a control loop having a transfer function common to both buck and boost modes of operation of the bi-directional SR DC/DC converter and a resonant transfer function to increase gain at the ripple voltage frequency (twice the AC line frequency) to control the duty cycle of the switches of the bi-directional SR DC/DC stage and controlling the duty cycle of the switches of the full-bridge or H-bridge switching circuit using a control loop including a notch filter at the ripple voltage frequency.
摘要翻译：使用全桥或H桥开关电路的双向AC / DC电力转换器中的直流链路电容可以大大降低，并且功率转换器的功率密度通过包括双向同步整流器（SR）而相应地增加， DC / DC转换器作为功率转换器的第二级，并且利用具有与双向SR DC / DC转换器的降压和升压工作模式共同的传递函数的控制回路来控制第二级，并且共振传递函数在纹波电压频率（交流线路频率的两倍）下增加增益，以控制双向SR DC / DC级的开关占空比，并控制全桥或H桥开关开关的占空比使用包括纹波电压频率的陷波滤波器的控制回路。

9. 发明授权

US08929114B2 Three-level active neutral point clamped zero voltage switching converter 有权
标题翻译：三电平有源中性点钳位零电压开关转换器
公开(公告)号：US08929114B2
公开(公告)日：2015-01-06
申请号：US13403010
申请日：2012-02-23
申请人： Jin Li , Dushan Boroyevich , Jinjun Liu
发明人： Jin Li , Dushan Boroyevich , Jinjun Liu
IPC分类号： H02M3/24 , H02M7/155 , H02M7/5387 , H02M7/487 , H02M1/34 , H02M1/00
CPC分类号： H02M7/487 , H02M1/34 , H02M2001/0058 , H02M2001/342 , Y02B70/1491
摘要： A main circuit of a three-level active neutral point clamped voltage source converter having a pair of additional main switches provides two paths between an output node and a neutral point in which one of the paths involves only switches of an inner pair of switches that are operated at a high frequency. An auxiliary circuit operating at a high frequency for only a brief period during each high frequency switching cycle selects the path involving only the inner switches and provides operation with zero voltage switching and avoids reverse recovery of diodes connected antiparallel with the main and additional main switches. Accordingly, turn-on switching losses in the main switches is avoided and the voltage source converter can be operated at increased frequency to allow reduction in size of magnetic components and full potential power transfer to be achieved.
摘要翻译：具有一对附加主开关的三电平有源中性点钳位电压源转换器的主电路在输出节点和中性点之间提供两个路径，其中一个路径仅涉及内部对开关的开关以高频率运行。在每个高频开关周期期间，仅在短时间内工作的辅助电路仅选择仅涉及内部开关的路径，并且提供零电压开关的操作，并避免与主主开关和附加主开关反并联连接的二极管的反向恢复。因此，避免了主开关中的导通开关损耗，并且可以以增加的频率操作电压源转换器，以允许减小磁性部件的尺寸并实现全电位功率传输。

10. 发明申请

US20120218785A1 Three-Level Active Neutral Point Clamped Zero Voltage Switching Converter 有权
标题翻译：三电平有源中性点钳位零电压开关转换器
公开(公告)号：US20120218785A1
公开(公告)日：2012-08-30
申请号：US13403010
申请日：2012-02-23
申请人： Jin Li , Dushan Boroyevich , Jinjun Liu
发明人： Jin Li , Dushan Boroyevich , Jinjun Liu
IPC分类号： H02M3/335
CPC分类号： H02M7/487 , H02M1/34 , H02M2001/0058 , H02M2001/342 , Y02B70/1491
摘要： A main circuit of a three-level active neutral point clamped voltage source converter having a pair of additional main switches provides two paths between an output node and a neutral point in which one of the paths involves only switches of an inner pair of switches that are operated at a high frequency. An auxiliary circuit operating at a high frequency for only a brief period during each high frequency switching cycle selects the path involving only the inner switches and provides operation with zero voltage switching and avoids reverse recovery of diodes connected antiparallel with the main and additional main switches. Accordingly, turn-on switching losses in the main switches is avoided and the voltage source converter can be operated at increased frequency to allow reduction in size of magnetic components and full potential power transfer to be achieved.
摘要翻译：具有一对附加主开关的三电平有源中性点钳位电压源转换器的主电路在输出节点和中性点之间提供两个路径，其中一个路径仅涉及内部对开关的开关以高频率运行。在每个高频开关周期期间，仅在短时间内工作的辅助电路仅选择仅涉及内部开关的路径，并且提供零电压开关的操作，并避免与主主开关和附加主开关反并联连接的二极管的反向恢复。因此，避免了主开关中的导通开关损耗，并且可以以增加的频率操作电压源转换器，以允许减小磁性部件的尺寸并实现全电位功率传输。

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