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公开(公告)号：US08471514B2
公开(公告)日：2013-06-25
申请号：US12894646
申请日：2010-09-30
申请人： Navid Zargari , Zhongyuan Cheng , Yuan Xiao
发明人： Navid Zargari , Zhongyuan Cheng , Yuan Xiao
CPC分类号： H02P27/04 , H02J3/01 , H02M5/4585 , Y02E40/40
摘要： Power conversion systems with active front end converters for example motor drives and power generation systems for distributed energy sources are presented with adaptive harmonic minimization for grid-tie converters for minimized or reduced total harmonic distortion in the line current spectrum including the source harmonic current and the grid-tie converter injected current spectrum referred to the line side.
摘要翻译： 具有主动前端转换器（例如用于分布式能源的电动机驱动器和发电系统）的电力转换系统被呈现为并网转换器的自适应谐波最小化，用于在线电流频谱中包括源谐波电流和 并网转换器注入电流频谱称为线路侧。
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公开(公告)号：US20120081061A1
公开(公告)日：2012-04-05
申请号：US12894646
申请日：2010-09-30
申请人： Navid Zargari , Zhongyuan Cheng , Yuan Xiao
发明人： Navid Zargari , Zhongyuan Cheng , Yuan Xiao
CPC分类号： H02P27/04 , H02J3/01 , H02M5/4585 , Y02E40/40
摘要： Power conversion systems with active front end converters for example motor drives and power generation systems for distributed energy sources are presented with adaptive harmonic minimization for grid-tie converters for minimized or reduced total harmonic distortion in the line current spectrum including the source harmonic current and the grid-tie converter injected current spectrum referred to the line side.
摘要翻译： 具有主动前端转换器（例如用于分布式能源的电动机驱动器和发电系统）的电力转换系统被呈现为并网转换器的自适应谐波最小化，用于在线电流频谱中包括源谐波电流和 并网转换器注入电流频谱称为线路侧。
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3.发明申请COMMON MODE VOLTAGE REDUCTION APPARATUS AND METHOD FOR CURRENT SOURCE CONVERTER BASED DRIVE 有权用于基于电流转换器的驱动器的共模电压降低装置和方法公开(公告)号：US20110299308A1
公开(公告)日：2011-12-08
申请号：US12795154
申请日：2010-06-07
申请人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao
发明人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao
IPC分类号： H02M5/45
CPC分类号： H02M1/44 , H02M5/4585 , H02M2001/123
摘要： Current source converter drives and common mode voltage reduction techniques are presented in which a space vector modulation zero vector for current source inverter (or rectifier) control is selected according to the switching state of the current source rectifier (or inverter) and according to the AC input power and the AC output power to control the output common mode voltage.
摘要翻译： 提出了电流源转换器驱动器和共模降压技术，其中根据电流源整流器（或逆变器）的开关状态并根据AC选择用于电流源逆变器（或整流器）控制的空间矢量调制零矢量 输入电源和交流输出功率来控制输出共模电压。
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4.发明申请公开(公告)号：US20100080028A1
公开(公告)日：2010-04-01
申请号：US12240533
申请日：2008-09-29
申请人： George Zhongyuan Cheng , Navid Zargari , Yuan Xiao , Manish Pande
发明人： George Zhongyuan Cheng , Navid Zargari , Yuan Xiao , Manish Pande
IPC分类号： H02M7/06
CPC分类号： H02M5/4585
摘要： Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping resistance value in parallel with an output or input capacitor and a measured output or input voltage value to mitigate or reduce common mode resonance in the converter.
摘要翻译： 提出了用于阻尼共模谐振的功率转换系统和方法，其中根据使用预定的虚拟阻尼电阻值与输出或输入电容器并联计算的阻尼电阻电流值来选择性地修改逆变器或整流器开关控制信号， 输出或输入电压值，以减轻或减少转换器中的共模共振。
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5.发明授权公开(公告)号：US08223511B2
公开(公告)日：2012-07-17
申请号：US12795154
申请日：2010-06-07
申请人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao
发明人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao
CPC分类号： H02M1/44 , H02M5/4585 , H02M2001/123
摘要： Current source converter drives and common mode voltage reduction techniques are presented in which a space vector modulation zero vector for current source inverter (or rectifier) control is selected according to the switching state of the current source rectifier (or inverter) and according to the AC input power and the AC output power to control the output common mode voltage.
摘要翻译： 提出了电流源转换器驱动器和共模降压技术，其中根据电流源整流器（或逆变器）的开关状态并根据AC选择用于电流源逆变器（或整流器）控制的空间矢量调制零矢量 输入电源和交流输出功率来控制输出共模电压。
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6.发明申请METHOD AND APPARATUS FOR DETECTING POWER CONVERTER CAPACITOR DEGRADATION USING NEGATIVE SEQUENCE CURRENTS 有权使用负序列电流检测功率转换器电容降解的方法和装置公开(公告)号：US20130057297A1
公开(公告)日：2013-03-07
申请号：US13650891
申请日：2012-10-12
IPC分类号： G01R31/28
CPC分类号： H02M1/32 , G01R31/028 , G01R31/42 , H02M1/126 , H02M5/4505 , H02M5/451 , H02M5/458 , H02M5/4585 , H02M7/525 , H02M7/539
摘要： Power converters and control techniques are presented in which capacitor degradation is detected according to negative sequence current by computing an uncompensated negative sequence current and a negative sequence voltage, compensating the negative sequence current based on the negative sequence voltage, comparing the compensated or uncompensated negative sequence current with an automatically calculated threshold and selectively identifying suspected degradation of one or more capacitors if the compensated negative sequence current exceeds the threshold value. The method can be used for power converters, control devices or protection relays for shunt capacitors or filters used in power systems.
摘要翻译： 提出了功率转换器和控制技术，其中通过计算未补偿的负序电流和负序电压根据负序电流检测电容器劣化，基于负序电压补偿负序电流，比较补偿或未补偿的负序 电流具有自动计算的阈值，并且如果补偿的负序电流超过阈值，则选择性地识别一个或多个电容器的可疑劣化。 该方法可用于电力系统中使用的电源转换器，控制装置或分流电容器或滤波器的保护继电器。
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7.发明授权Power conversion system and method for active damping of common mode resonance 有权用于共模谐振主动阻尼的电力转换系统和方法公开(公告)号：US07990097B2
公开(公告)日：2011-08-02
申请号：US12240533
申请日：2008-09-29
申请人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao , Manish Pande
发明人： Zhongyuan Cheng , Navid Zargari , Yuan Xiao , Manish Pande
CPC分类号： H02M5/4585
摘要： Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping resistance value in parallel with an output or input capacitor and a measured output or input voltage value to mitigate or reduce common mode resonance in the converter.
摘要翻译： 提出了用于阻尼共模谐振的功率转换系统和方法，其中根据使用预定的虚拟阻尼电阻值与输出或输入电容器并联计算的阻尼电阻电流值来选择性地修改逆变器或整流器开关控制信号， 输出或输入电压值，以减轻或减少转换器中的共模共振。
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8.发明申请公开(公告)号：US20150200602A1
公开(公告)日：2015-07-16
申请号：US14153103
申请日：2014-01-13
申请人： Mehdi Narimani , Bin Wu , Zhongyuan Cheng , Navid Zargari
发明人： Mehdi Narimani , Bin Wu , Zhongyuan Cheng , Navid Zargari
CPC分类号： H02M5/4585 , H02M1/12 , H02M7/483 , H02M7/487 , H02M2001/0003
摘要： Sinusoidal pulse width modulation (SPWM) control techniques, computer readable mediums, and apparatus are presented for operating a multilevel converter, in which a desired AC node voltage level is determined through comparison of a plurality of carrier signals or values to at least one reference signal or value, and a switching state is selected from a plurality of redundant switching states corresponding to the desired AC node voltage level for generating switching control signals based at least partially on a switched capacitor voltage balancing goal or other control objective.
摘要翻译： 提出了正弦脉宽调制（SPWM）控制技术，计算机可读介质和装置，用于操作多电平转换器，其中通过将多个载波信号或值与至少一个参考信号进行比较来确定期望的AC节点电压电平 或值，并且从对应于期望AC节点电压电平的多个冗余开关状态中选择开关状态，用于至少部分地基于开关电容器电压平衡目标或其他控制目标来产生开关控制信号。
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9.发明申请CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION 有权具有旋转的CASCADED H-BRIDGE（CHB）INVERTER LEVEL SHIFT PWM公开(公告)号：US20140036557A1
公开(公告)日：2014-02-06
申请号：US14047295
申请日：2013-10-07
申请人： Thomas Nondahl , Jingbo Liu , Zhongyuan Cheng , Navid Zargari
发明人： Thomas Nondahl , Jingbo Liu , Zhongyuan Cheng , Navid Zargari
IPC分类号： H02M7/5387
CPC分类号： H02M7/53871 , H02M1/12 , H02M7/49 , H02M7/5395 , H02M2007/4835
摘要： Cascade H-Bridge inverters and carrier-based level shift pulse width modulation techniques are presented for generating inverter stage switching control signals, in which carrier waveform levels are selectively shifted to control THD and to mitigate power distribution imbalances within multilevel inverter elements using either complementary carrier or complementary reference modulation techniques.
摘要翻译： 提出了级联H桥逆变器和基于载波的电平移位脉冲宽度调制技术，用于产生逆变器级切换控制信号，其中载波波形电平被选择性地移位以控制THD并且使用互补载波来减轻多电平逆变器元件内的功率分配不平衡 或互补参考调制技术。
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公开(公告)号：US20130033907A1
公开(公告)日：2013-02-07
申请号：US13648514
申请日：2012-10-10
申请人： Hua Zhou , Zhongyuan Cheng , Navid Zargari
发明人： Hua Zhou , Zhongyuan Cheng , Navid Zargari
IPC分类号： H02M1/12
CPC分类号： H02M1/12 , H02J3/01 , H02M5/4585 , Y02E40/40
摘要： Power conversion systems with active front end converters for example motor drives and power generation systems for distributed energy sources are presented with adaptive harmonic minimization for grid-tie converters for minimized or reduced total harmonic distortion in the line current spectrum including the source harmonic current, the load harmonics and the PWM harmonics.
摘要翻译： 具有有源前端转换器（例如用于分布式能量的电动机驱动器和发电系统）的功率转换系统被呈现为并网转换器的自适应谐波最小化，用于在包括源谐波电流的线路电流频谱中最小化或减少总谐波失真 负载谐波和PWM谐波。
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