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11.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：US08194375B2
公开(公告)日：2012-06-05
申请号：US12689410
申请日：2010-01-19
IPC分类号： H02H3/20
CPC分类号： H01L31/02021 , H02J3/383 , H02M1/36 , H02M7/797 , H02S40/32 , Y02E10/563
摘要： A method to clamp an open circuit voltage in a photovoltaic module is proposed. The method include coupling a load resistor across an inverter module, initiating the inverter module and loading the inverter module via the load resistor, and coupling the loaded inverter module to the photovoltaic module. The method further include dissipating power via the load resistor to clamp the open circuit voltage of the photovoltaic module, synchronizing an output voltage of the inverter module with a voltage of a grid and then coupling the inverter module to the grid and de-coupling the load resistor across the inverter module.
摘要翻译： 提出了一种在光伏模块中钳位开路电压的方法。 该方法包括将负载电阻器耦合到逆变器模块上，启动逆变器模块并通过负载电阻器加载逆变器模块，并将负载的逆变器模块耦合到光伏模块。 该方法还包括经由负载电阻器耗散功率以钳位光伏模块的开路电压，使逆变器模块的输出电压与电网的电压同步，然后将逆变器模块耦合到电网并使负载解耦 电阻穿过逆变器模块。
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公开(公告)号：US20110109285A1
公开(公告)日：2011-05-12
申请号：US12615566
申请日：2009-11-10
IPC分类号： G05F1/10
CPC分类号： H02M7/487 , H02M7/5395 , Y10S323/906
摘要： A method of operating a three level converter includes controlling the output voltage of the converter when a DC link voltage of the three level converter is lower than one-half of a rated DC link voltage of the converter by, for each leg of the converter, alternately connecting an output terminal of the leg to the positive terminal or the negative terminal of the DC link. When the DC link voltage is at least one-half of the rated DC link voltage, the method includes controlling the output voltage of the converter by, for each leg, selectively connecting the output terminal of the converter to the positive terminal, the negative terminal, or a mid-point of the DC link.
摘要翻译： 一种操作三电平转换器的方法包括：当三电平转换器的直流母线电压低于转换器的额定直流母线电压的一半时，通过转换器的每个支路来控制转换器的输出电压， 交替地将脚的输出端连接到DC链路的正极或负极。 当直流母线电压至少为额定直流母线电压的一半时，该方法包括通过对每个支路选择性地将转换器的输出端连接到正极端子来控制转换器的输出电压，负极端子 ，或DC链路的中点。
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14.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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公开(公告)号：US08411474B2
公开(公告)日：2013-04-02
申请号：US12770800
申请日：2010-04-30
申请人： Robert Roesner , Stefan Schroeder
发明人： Robert Roesner , Stefan Schroeder
IPC分类号： H02H7/122
摘要： A three level neutral point clamped (NPC) converter includes a plurality of phase legs each having at least two inner switching devices, at least two outer switching devices, at least two clamping diodes, and a protection circuit. An inner component failure sensing circuit is employed in the protection circuit to detect a failure condition in any of the inner switching devices or clamping diodes. The protection circuit further includes a gating signal generation circuit configured to generate a turn ON signal for a respective outer switching device that is adjacent to the failed inner switching device or the clamping diode.
摘要翻译： 三级中性点钳位（NPC）转换器包括多个相位支路，每个相位支路具有至少两个内部开关器件，至少两个外部开关器件，至少两个钳位二极管和保护电路。 在保护电路中采用内部故障检测电路来检测任何内部开关器件或钳位二极管中的故障状况。 该保护电路还包括门控信号产生电路，其被配置为产生与故障内部开关器件或钳位二极管相邻的相应外部开关器件的导通信号。
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公开(公告)号：US20120068468A1
公开(公告)日：2012-03-22
申请号：US13307036
申请日：2011-11-30
CPC分类号： H05K7/20945 , F28D15/00 , Y02P80/158
摘要： A compact transformer-power converter assembly includes: a transformer immersed in oil and a cooling fluid path through a power converter system for extracting heat from the power converter system and the oil.
摘要翻译： 紧凑型变压器 - 功率转换器组件包括：浸入油中的变压器和通过功率转换器系统的冷却流体路径，用于从功率转换器系统和油提取热量。
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公开(公告)号：US20110267862A1
公开(公告)日：2011-11-03
申请号：US12770800
申请日：2010-04-30
申请人： Robert Roesner , Stefan Schroeder
发明人： Robert Roesner , Stefan Schroeder
IPC分类号： H02M7/5387 , H02H9/00
摘要： A three level neutral point clamped (NPC) converter includes a plurality of phase legs each having at least two inner switching devices, at least two outer switching devices, at least two clamping diodes, and a protection circuit. An inner component failure sensing circuit is employed in the protection circuit to detect a failure condition in any of the inner switching devices or clamping diodes. The protection circuit further includes a gating signal generation circuit configured to generate a turn ON signal for a respective outer switching device that is adjacent to the failed inner switching device or the clamping diode.
摘要翻译： 三级中性点钳位（NPC）转换器包括多个相位支路，每个相位支路具有至少两个内部开关器件，至少两个外部开关器件，至少两个钳位二极管和保护电路。 在保护电路中采用内部故障检测电路来检测任何内部开关器件或钳位二极管中的故障状况。 该保护电路还包括门控信号产生电路，其被配置为产生与故障内部开关器件或钳位二极管相邻的相应外部开关器件的导通信号。
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18.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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公开(公告)号：US07880419B2
公开(公告)日：2011-02-01
申请号：US12074223
申请日：2008-02-29
IPC分类号： H02P1/00
CPC分类号： H02M7/521 , H02J3/36 , H02M3/158 , H02M7/487 , H02M7/53873 , H02M2001/007 , Y02E60/60
摘要： A system for the transmission of a direct current (DC) at a medium voltage level includes a system DC link configured to carry power from a source to a load module. The load module includes a DC-to-DC voltage step-down converter, a DC-to-AC inverter coupled downstream to the DC-to-DC voltage step-down converter, and a system AC link for carrying power from the load module to a motor system on a load side of the system AC link. The system is effective for delivering power over distances that are greater than 30 kilometers, and for delivery of power from an on-shore to offshore and sub-sea load.
摘要翻译： 用于传输中压电压（DC）的系统包括被配置为将功率从源传送到负载模块的系统DC链路。 负载模块包括DC-DC电压降压转换器，下游耦合到DC-DC电压降压转换器的DC-AC逆变器和用于承载来自负载模块的电力的系统AC链路 到系统AC链路的负载侧的电机系统。 该系统在距离大于30公里的交付电力以及从岸上向海上和海底负载运送电力方面是有效的。
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公开(公告)号：US20100329881A1
公开(公告)日：2010-12-30
申请号：US12491520
申请日：2009-06-25
CPC分类号： F01D11/00 , B64D45/02 , F03D80/30 , Y02E10/72 , Y02T50/672
摘要： A lightning protection system for a wind turbine blade or aircraft wing includes a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing having a tip region, a suction side, a pressure side, a leading edge and a trailing edge. A substantially planar sheet of conductive or semi-conductive material is disposed internal to the blade tip region or wing tip region and between the suction side and pressure side. The sheet operates during a lightning discharge to form an electric field control mechanism causing the lightning discharge to attach to the tip region. The sheet is in electrical communication or galvanic connection with a conductive or semi-conductive path such that the electric field control mechanism and the path together operate to protect the wind turbine blade or aircraft wing from damage caused by the lightning strike in the tip region of the wind turbine blade or aircraft wing by controlling an electric field in the tip region caused by the lightning strike.
摘要翻译： 用于风力涡轮机叶片或飞行器机翼的防雷系统包括玻璃纤维或碳强化的风力涡轮机叶片或具有尖端区域，吸力侧，压力侧，前缘和后缘的飞机机翼。 基本上平面的导电或半导电材料片设置在叶片尖端区域或翼尖区域内部以及吸力侧和压力侧之间。 薄片在雷电放电期间操作以形成电场控制机构，使雷电放电附着到尖端区域。 该片材与导电或半导电路径电连接或电连接，使得电场控制机构和路径一起操作以保护风力涡轮机叶片或飞行器机翼免受由雷击尖端区域中的雷击造成的损坏 风力涡轮机叶片或飞机机翼通过控制由雷击引起的尖端区域中的电场。
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