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公开(公告)号：US08604822B2
公开(公告)日：2013-12-10
申请号：US12956785
申请日：2010-11-30
申请人： Stefan Schroeder , Cyrus David Harbourt , Jie Shen
发明人： Stefan Schroeder , Cyrus David Harbourt , Jie Shen
IPC分类号： G01R31/40
CPC分类号： G01R31/42
摘要： A method of assembling a testing apparatus for a full-power converter assembly includes coupling an electric power supply apparatus to an electric power grid. The method also includes coupling a direct current (DC) generation apparatus to the electric power supply apparatus. The method further includes coupling an electric power grid simulation device to the DC generation apparatus. The method also includes coupling a full-power converter assembly test connection to the electric power grid simulation device.
摘要翻译： 一种组装全功率转换器组件的测试装置的方法包括将电力供应装置耦合到电力网。 该方法还包括将直流（DC）产生装置耦合到电力供应装置。 该方法还包括将电网模拟装置耦合到DC发生装置。 该方法还包括将全功率转换器组件测试连接耦合到电力网模拟设备。
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公开(公告)号：US20120133389A1
公开(公告)日：2012-05-31
申请号：US12956785
申请日：2010-11-30
申请人： Stefan Schroeder , Cyrus David Harbourt , Jie Shen
发明人： Stefan Schroeder , Cyrus David Harbourt , Jie Shen
IPC分类号： G01R31/40
CPC分类号： G01R31/42
摘要： A method of assembling a testing apparatus for a full-power converter assembly includes coupling an electric power supply apparatus to an electric power grid. The method also includes coupling a direct current (DC) generation apparatus to the electric power supply apparatus. The method further includes coupling an electric power grid simulation device to the DC generation apparatus. The method also includes coupling a full-power converter assembly test connection to the electric power grid simulation device.
摘要翻译： 一种组装全功率转换器组件的测试装置的方法包括将电力供应装置耦合到电力网。 该方法还包括将直流（DC）产生装置耦合到电力供应装置。 该方法还包括将电网模拟装置耦合到DC发生装置。 该方法还包括将全功率转换器组件测试连接耦合到电力网模拟设备。
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3.发明申请公开(公告)号：US20110141786A1
公开(公告)日：2011-06-16
申请号：US12893015
申请日：2010-09-29
申请人： Jie Shen , Stefan Schroeder , Robert Roesner
发明人： Jie Shen , Stefan Schroeder , Robert Roesner
IPC分类号： H02M7/537
CPC分类号： H02M7/487 , H02M2001/0025
摘要： A control system for a multilevel converter includes a differential mode current regulator, a neutral point (NP) controller and a PWM controller for generating switching pulses for the multilevel converter. The differential mode current regulator generates reference voltage command signals based on a difference between reference current command signals and actual current command signals, and the NP controller determines a modified neutral point current signal in response to a DC link voltage unbalance. The NP controller utilizes the modified neutral point current signal to generate a common mode reference voltage signal. The switching pulses are generated by the PWM controller based on the reference voltage command signals and the common mode reference voltage signal.
摘要翻译： 用于多电平转换器的控制系统包括差模电流调节器，中性点（NP）控制器和用于产生用于多电平转换器的开关脉冲的PWM控制器。 差分电流调节器基于参考电流指令信号和实际电流指令信号之间的差产生参考电压指令信号，并且NP控制器响应于直流链路电压不平衡来确定修正的中性点电流信号。 NP控制器利用修正的中性点电流信号产生共模参考电压信号。 开关脉冲由PWM控制器基于参考电压指令信号和共模参考电压信号产生。
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4.发明授权公开(公告)号：US08441820B2
公开(公告)日：2013-05-14
申请号：US12893015
申请日：2010-09-29
申请人： Jie Shen , Stefan Schroeder , Robert Roesner
发明人： Jie Shen , Stefan Schroeder , Robert Roesner
CPC分类号： H02M7/487 , H02M2001/0025
摘要： A control system for a multilevel converter includes a differential mode current regulator, a neutral point (NP) controller and a PWM controller for generating switching pulses for the multilevel converter. The differential mode current regulator generates reference voltage command signals based on a difference between reference current command signals and actual current command signals, and the NP controller determines a modified neutral point current signal in response to a DC link voltage unbalance. The NP controller utilizes the modified neutral point current signal to generate a common mode reference voltage signal. The switching pulses are generated by the PWM controller based on the reference voltage command signals and the common mode reference voltage signal.
摘要翻译： 用于多电平转换器的控制系统包括差模电流调节器，中性点（NP）控制器和用于产生用于多电平转换器的开关脉冲的PWM控制器。 差分电流调节器基于参考电流指令信号和实际电流指令信号之间的差产生参考电压指令信号，并且NP控制器响应于直流链路电压不平衡来确定修正的中性点电流信号。 NP控制器利用修正的中性点电流信号产生共模参考电压信号。 开关脉冲由PWM控制器基于参考电压指令信号和共模参考电压信号产生。
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5.发明申请PHOTOVOLTAIC INVERTER SYSTEM AND METHOD OF STARTING SAME AT HIGH OPEN-CIRCUIT VOLTAGE 有权光伏逆变器系统及其在高开路电压下启动的方法公开(公告)号：US20120026769A1
公开(公告)日：2012-02-02
申请号：US12845802
申请日：2010-07-29
IPC分类号： H02M7/48
CPC分类号： H02J3/383 , H02M3/1584 , H02M7/48 , Y02E10/563 , Y02E10/58
摘要： A power inverter system includes a DC to AC inverter configured to convert DC voltage from a DC power source to AC voltage. A DC link couples the DC power source and the inverter. An inverter pre-charger operates to pre-charge the inverter to achieve a desired DC link voltage prior to connecting the power inverter system to an AC power grid. A phased lock loop synchronizes the pre-charged inverter to the AC power grid prior to connecting the power inverter system to the AC power grid. The pre-charged inverter regulates the DC link voltage to about the minimum voltage level that allows control of AC grid currents via the inverter subsequent to connecting the power inverter system to the AC grid. The inverter operates in a maximum power point tracking control mode only subsequent to a first voltage transient caused by connecting the DC power source to energize the power inverter system.
摘要翻译： 电力逆变器系统包括被配置为将直流电压从直流电源转换成交流电压的直流到交流逆变器。 直流母线连接直流电源和逆变器。 在将电力逆变器系统连接到交流电网之前，逆变器预充电器用于对逆变器预充电以实现期望的直流链路电压。 在将电力逆变器系统连接到交流电网之前，相位锁定环将预充电的逆变器同步到交流电网。 预充电逆变器将直流母线电压调节到大约最小电压电平，允许在将电力逆变器系统连接到交流电网之后通过变频器控制交流电网电流。 只有在连接直流电源才能使功率逆变器系统通电的第一次电压瞬变之后，变频器才能工作在最大功率点跟踪控制模式。
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6.发明授权Photovoltaic inverter system and method of starting same at high open-circuit voltage 有权光伏逆变器系统及其在高开路电压下启动的方法公开(公告)号：US08395919B2
公开(公告)日：2013-03-12
申请号：US12845802
申请日：2010-07-29
IPC分类号： H02M7/537
CPC分类号： H02J3/383 , H02M3/1584 , H02M7/48 , Y02E10/563 , Y02E10/58
摘要： A power inverter system includes a DC to AC inverter configured to convert DC voltage from a DC power source to AC voltage. A DC link couples the DC power source and the inverter. An inverter pre-charger operates to pre-charge the inverter to achieve a desired DC link voltage prior to connecting the power inverter system to an AC power grid. A phased lock loop synchronizes the pre-charged inverter to the AC power grid prior to connecting the power inverter system to the AC power grid. The pre-charged inverter regulates the DC link voltage to about the minimum voltage level that allows control of AC grid currents via the inverter subsequent to connecting the power inverter system to the AC grid. The inverter operates in a maximum power point tracking control mode only subsequent to a first voltage transient caused by connecting the DC power source to energize the power inverter system.
摘要翻译： 电力逆变器系统包括被配置为将直流电压从直流电源转换成交流电压的直流到交流逆变器。 直流母线连接直流电源和逆变器。 在将电力逆变器系统连接到交流电网之前，逆变器预充电器用于对逆变器预充电以实现期望的直流链路电压。 在将电力逆变器系统连接到交流电网之前，相位锁定环将预充电的逆变器同步到交流电网。 预充电逆变器将直流母线电压调节到大约最小电压电平，允许在将电力逆变器系统连接到交流电网之后通过变频器控制交流电网电流。 只有在连接直流电源才能使功率逆变器系统通电的第一次电压瞬变之后，变频器才能工作在最大功率点跟踪控制模式。
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公开(公告)号：US20110115532A1
公开(公告)日：2011-05-19
申请号：US12618810
申请日：2009-11-16
申请人： Robert Roesner , Stefan Schroeder , Jie Shen
发明人： Robert Roesner , Stefan Schroeder , Jie Shen
CPC分类号： H02M7/487 , H02M7/003 , H02M2001/0048 , H02M2001/007 , Y02B70/1491 , Y10T307/76
摘要： A method of operating a neutral point clamped (NPC) three level converter is provided. The NPC converter includes at least two legs, each leg comprising first and second top switches connected in series at a first mid point. The converter further includes first and second bottom switches connected in series at a second mid point, and first and second middle switches connected in series at a third mid point therebetween. The first top and second bottom switches are connected in series at a DC link and the first and the second middle switches are connected between the first and the second mid points. Each of the top, bottom and middle switches has an antiparallel diode thereacross. The method includes alternately switching the first and second top switches to ON state when the first middle switch is in ON state and the second middle switch is in OFF state. The method also includes alternately switching the first and the second bottom switches to ON state when the first middle switch is in OFF state and the second middle switch is in ON state.
摘要翻译： 提供了一种操作中性点钳位（NPC）三电平转换器的方法。 NPC转换器包括至少两个腿，每个腿包括在第一中点处串联连接的第一和第二顶部开关。 转换器还包括在第二中点串联连接的第一和第二底部开关，以及在它们之间的第三个中间点串联连接的第一和第二中间开关。 第一顶部和第二个底部开关在DC链路处串联连接，第一和第二中间开关连接在第一和第二中间点之间。 顶部，底部和中部开关中的每一个都具有反平行二极管。 该方法包括当第一中间开关处于导通状态并且第二中间开关处于断开状态时交替地将第一和第二顶部开关切换到接通状态。 该方法还包括当第一中间开关处于断开状态并且第二中间开关处于接通状态时交替地将第一和第二底部开关切换到接通状态。
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公开(公告)号：US20130258724A1
公开(公告)日：2013-10-03
申请号：US13432256
申请日：2012-03-28
申请人： Jie Shen , Stefan Schroeder , Zhihui Yuan
发明人： Jie Shen , Stefan Schroeder , Zhihui Yuan
IPC分类号： H02J3/36
CPC分类号： H02J3/36 , H02J1/08 , H02J1/102 , H02J3/06 , H02J3/386 , H02J3/48 , Y02E10/763 , Y02E60/60 , Y02P80/14
摘要： A high voltage direct current system is presented. The system includes at least three high voltage direct current terminals. Furthermore, the system include at least two transmission lines configured to operatively couple the at least three high voltage direct current terminals. Moreover, the system includes a power flow control device operatively coupled to at least one end of one or more of the at least two transmission lines and at least one of a local grid and another power flow control device. Methods to perform the method for power flow control are also presented.
摘要翻译： 介绍了高压直流系统。 该系统包括至少三个高压直流端子。 此外，该系统包括配置成可操作地耦合至少三个高压直流端子的至少两条传输线。 此外，该系统包括功率流控制装置，其可操作地耦合到所述至少两条传输线中的一个或多个的至少一端以及局部电网和另一电力流控制装置中的至少一个。 还介绍了执行电力潮流控制方法的方法。
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公开(公告)号：US08228695B2
公开(公告)日：2012-07-24
申请号：US12618810
申请日：2009-11-16
申请人： Robert Roesner , Stefan Schroeder , Jie Shen
发明人： Robert Roesner , Stefan Schroeder , Jie Shen
IPC分类号： H02M7/122
CPC分类号： H02M7/487 , H02M7/003 , H02M2001/0048 , H02M2001/007 , Y02B70/1491 , Y10T307/76
摘要： A method of operating a neutral point clamped (NPC) three level converter is provided. The NPC converter includes at least two legs, each leg comprising first and second top switches connected in series at a first mid point. The converter further includes first and second bottom switches connected in series at a second mid point, and first and second middle switches connected in series at a third mid point therebetween. The first top and second bottom switches are connected in series at a DC link and the first and the second middle switches are connected between the first and the second mid points. Each of the top, bottom and middle switches has an antiparallel diode thereacross. The method includes alternately switching the first and second top switches to ON state when the first middle switch is in ON state and the second middle switch is in OFF state. The method also includes alternately switching the first and the second bottom switches to ON state when the first middle switch is in OFF state and the second middle switch is in ON state.
摘要翻译： 提供了一种操作中性点钳位（NPC）三电平转换器的方法。 NPC转换器包括至少两个腿，每个腿包括在第一中点处串联连接的第一和第二顶部开关。 转换器还包括在第二中点串联连接的第一和第二底部开关，以及在它们之间的第三个中间点串联连接的第一和第二中间开关。 第一顶部和第二个底部开关在DC链路处串联连接，第一和第二中间开关连接在第一和第二中间点之间。 顶部，底部和中部开关中的每一个都具有反平行二极管。 该方法包括当第一中间开关处于导通状态并且第二中间开关处于断开状态时交替地将第一和第二顶部开关切换到接通状态。 该方法还包括当第一中间开关处于断开状态并且第二中间开关处于接通状态时交替地将第一和第二底部开关切换到接通状态。
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公开(公告)号：US09036379B2
公开(公告)日：2015-05-19
申请号：US13296349
申请日：2011-11-15
CPC分类号： B60L15/007 , H02M1/12 , H02M5/4585 , H02M7/487 , H02M7/49 , Y02T10/645
摘要： A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices, such as transformers or electric machines, with open windings that are connected to only the AFE or only the H-bridge inverters or to both the AFE and H-bridge inverters, provide a regenerative or partial regenerative power converter.
摘要翻译： 功率转换器包括通过直流链路级耦合到多个H桥逆变器的有源前端（AFE）。 一个或多个多相电磁能量转换装置，例如变压器或电动机，其具有仅与AFE或仅H桥逆变器连接的开路绕组，或者连接到AFE和H桥逆变器，提供了一种 再生或部分再生功率转换器。
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