公开(公告)号：US07040391B2

公开(公告)日：2006-05-09

申请号：US10610438

申请日：2003-06-30

申请人： John Michael Leuthen ,  Fang Zheng Peng

发明人： John Michael Leuthen ,  Fang Zheng Peng

IPC分类号： E21B43/00

CPC分类号： H02M7/483 ,  H02M5/4585 ,  H02M7/487 ,  H02P27/14

摘要： First and second networks of switching devices, each of which are an insulated gate bipolar transistor with an intrinsic reverse-biased clamping diode, are controlled to selectively connect a sinusoidal input voltage and an output to different nodes within a series of capacitors during different portions of input and output voltage cycles to produce a stepped sinusoidal output voltage. The topology requires a low part count, produces relatively low harmonics without filtering when powering artificial lift equipment within a borehole, and scales up to medium voltages without a step-up transformer. During variable speed operation of the lift equipment, optimized switching angles for controlling the switching devices during the voltage cycles may be selected based on modulation producing the desired speed and phase measurements.

摘要翻译： 开关器件的第一和第二网络，其中每一个都是具有本征反向偏置钳位二极管的绝缘栅双极晶体管，被控制为在不同部分的不同部分期间将正弦输入电压和输出选择性地连接到一系列电容器内的不同节点 输入和输出电压周期，以产生阶梯式正弦输出电压。 拓扑结构需要较低的零件数量，在为钻孔内的人造电梯设备供电时不产生过滤，产生相对较低的谐波，而在没有升压变压器的情况下可扩展到中等电压。 在电梯设备的变速操作期间，可以基于产生所需速度和相位测量的调制来选择用于在电压循环期间控制开关装置的优化开关角度。

公开(公告)号：USRE37126E1

公开(公告)日：2001-04-03

申请号：US09167287

申请日：1998-10-06

申请人： Fang Zheng Peng ,  Jih-Sheng Lai

发明人： Fang Zheng Peng ,  Jih-Sheng Lai

IPC分类号： H02M7521

CPC分类号： H02M7/49 ,  H02J3/1857 ,  H02M2007/4835 ,  Y02E10/56 ,  Y02E40/12 ,  Y02E40/26

摘要： A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

摘要翻译： 这里描述了具有分离的DC源的多级联级联电压源逆变器。 该逆变器适用于高电压，大功率应用，如柔性交流传输系统（FACTS），包括静态VAR发电（SVG），电力线调节，串联补偿，相移和电压平衡以及燃料电池和光伏电站接口系统。 M级逆变器由至少一个相位组成，其中每相具有配备有独立DC源的多个全桥逆变器。 随着电平数M的增加，该逆变器产生接近正弦近似电压波形，每个周期只有一次开关。 逆变器可以具有以相位或三角形配置连接的单相或多相实施例。

公开(公告)号：US5710698A

公开(公告)日：1998-01-20

申请号：US540302

申请日：1995-10-06

申请人： Jih-Sheng Lai ,  Fang Zheng Peng ,  Robert W. Young, Sr. ,  George W. Ott, Jr.

发明人： Jih-Sheng Lai ,  Fang Zheng Peng ,  Robert W. Young, Sr. ,  George W. Ott, Jr.

IPC分类号： H02M1/34 ,  H02M7/5387 ,  H03K17/00 ,  H02H7/122

CPC分类号： H02M7/5387 ,  H02M1/34 ,  H03K17/08148 ,  H02M2001/342 ,  H03K2217/0036 ,  Y02B70/1441 ,  Y02B70/1491

摘要： A delta connected, resonant snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the dc supply voltage through the main inverter switches and the auxiliary switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.

摘要翻译： 三相连接的谐振缓冲器，软开关，逆变电路在直流到交流电源转换和功率调节期间实现无损开关，具有最小的元件数量和尺寸。 电流仅通过主逆变器开关和辅助开关的直流电源电压提供给谐振缓冲器分支。 通过在谐振缓冲器分支中使用单个半导体开关来减少元件数量和尺寸。 通过最大化主开关的杂散电容作为并联谐振电容器，也减少了组件数量。 并联电容的谐振充放电允许无损，零电压切换。 在一个实施例中，电路元件尺寸和计数被最小化，同时实现三相逆变器内的无损，零电压开关。

公开(公告)号：US5642275A

公开(公告)日：1997-06-24

申请号：US527995

申请日：1995-09-14

申请人： Fang Zheng Peng ,  Jih-Sheng Lai

发明人： Fang Zheng Peng ,  Jih-Sheng Lai

IPC分类号： H02M7/48 ,  H02M7/49 ,  H02M7/521

CPC分类号： H02M7/49 ,  H02J3/1857 ,  H02M2007/4835 ,  Y02E10/56 ,  Y02E40/12 ,  Y02E40/26

摘要： A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

摘要翻译： 这里描述了具有分离的DC源的多级联级联电压源逆变器。 该逆变器适用于高电压，大功率应用，如柔性交流传输系统（FACTS），包括静态VAR发电（SVG），电力线调节，串联补偿，相移和电压平衡以及燃料电池和光伏电站接口系统。 M级逆变器由至少一个相位组成，其中每相具有配备有独立DC源的多个全桥逆变器。 随着电平数M的增加，该逆变器产生接近正弦近似电压波形，每个周期只有一次开关。 逆变器可以具有以相位或三角形配置连接的单相或多相实施例。

公开(公告)号：US6075350A

公开(公告)日：2000-06-13

申请号：US296980

申请日：1999-04-22

申请人： Fang Zheng Peng

发明人： Fang Zheng Peng

IPC分类号： H02J3/18 ,  G05F1/70

CPC分类号： H02J3/1857 ,  H02J3/1814 ,  Y02E40/12 ,  Y02E40/18 ,  Y02E40/26

摘要： A power line conditioner using cascade multilevel inverter used for voltage regulation, reactive power (var) compensation and harmonic filtering, including the control schemes for operating the cascade inverter for voltage regulation and harmonic filtering in distribution systems. The cascade M-level inverter consists of (M-1)/2 H-bridges in which each bridge has its own separate DC source. This new inverter (1) can generate almost sinusoidal waveform voltage with only one time switching per line cycle, (2) can eliminate transformers of multipulse inverters used in the conventional static VAR compensators, and (3) makes possible direct connection to the 13.8 kV power distribution system in parallel and series without any transformer. In other words, the power line conditioner is much more efficient and more suitable to VAR compensation and harmonic filtering of distribution systems than traditional multipulse and pulse width modulation (PWM) inverters. It has been shown that the new inverter is specially suited for simultaneous VAR compensation and harmonic filtering.

摘要翻译： 一种使用级联多电平逆变器的电力线路调节器，用于电压调节，无功功率（var）补偿和谐波滤波，包括用于分配系统中用于电压调节和谐波滤波的级联逆变器的控制方案。 级联M级逆变器由（M-1）/ 2 H桥组成，其中每个桥具有其独立的DC源。 这种新型逆变器（1）可以在每个线路周期内只产生一次切换产生几乎正弦波形电压，（2）可以消除传统静态VAR补偿器中使用的多脉冲逆变器的变压器，（3）可以直接连接到13.8 kV 配电系统并联，串联无变压器。 换句话说，与传统的多脉冲和脉宽调制（PWM）逆变器相比，电力线调节器比配电系统的VAR补偿和谐波滤波效率更高，更适合。 已经表明，新型逆变器特别适用于同时进行VAR补偿和谐波滤波。

公开(公告)号：US5644483A

公开(公告)日：1997-07-01

申请号：US446366

申请日：1995-05-22

申请人： Fang Zheng Peng ,  Jih-Sheng Lai

发明人： Fang Zheng Peng ,  Jih-Sheng Lai

IPC分类号： H02M7/48 ,  H02M7/487 ,  H02M5/45

CPC分类号： H02M7/487

摘要： A voltage balanced multilevel converter for high power AC applications such as adjustable speed motor drives and back-to-back DC intertie of adjacent power systems. This converter provides a multilevel rectifier, a multilevel inverter, and a DC link between the rectifier and the inverter allowing voltage balancing between each of the voltage levels within the multilevel converter.The rectifier is equipped with at least one phase leg and a source input node for each of the phases. The rectifier is further equipped with a plurality of rectifier DC output nodes. The inverter is equipped with at least one phase leg and a load output node for each of the phases. The inverter is further equipped with a plurality of inverter DC input nodes. The DC link is equipped with a plurality of rectifier charging means and a plurality of inverter discharging means. The plurality of rectifier charging means are connected in series with one of the rectifier charging means disposed between and connected in an operable relationship with each adjacent pair of rectifier DC output nodes. The plurality of inverter discharging means are connected in series with one of the inverter discharging means disposed between and connected in an operable relationship with each adjacent pair of inverter DC input nodes. Each of said rectifier DC output nodes are individually electrically connected to the respective inverter DC input nodes. By this means, each of the rectifier DC output nodes and each of the inverter DC input nodes are voltage balanced by the respective charging and discharging of the rectifier charging means and the inverter discharging means.

摘要翻译： 用于大功率AC应用的电压平衡多电平转换器，例如可调速电机驱动器和相邻电力系统的背对背DC间隔。 该转换器提供多级整流器，多电平逆变器和整流器和逆变器之间的直流链路，允许在多电平转换器内的每个电压电平之间进行电压平衡。 整流器配备有至少一个相位支路和用于每个相位的源极输入节点。 整流器还配备有多个整流器DC输出节点。 逆变器配备有至少一个相位支路和用于每个相位的负载输出节点。 逆变器还配备有多个逆变器DC输入节点。 直流链路配备有多个整流充电装置和多个逆变器放电装置。 多个整流充电装置与整流器充电装置中的一个串联连接，整流充电装置设置在与每个相邻的整流器直流输出节点对处于可操作的关系之间并与之连接。 多个逆变器放电装置与设置在与每个相邻的逆变器DC输入节点对成可操作的关系中的逆变器放电装置中的一个串联连接。 每个所述整流器DC输出节点分别电连接到相应的逆变器DC输入节点。 通过这种方式，整流器直流输出节点和逆变器直流输入节点中的每一个通过整流充电装置和逆变器放电装置的相应充电和放电来进行电压平衡。

公开(公告)号：US06370050B1

公开(公告)日：2002-04-09

申请号：US09399397

申请日：1999-09-20

申请人： Fang Zheng Peng ,  Donald Joe Adams

发明人： Fang Zheng Peng ,  Donald Joe Adams

IPC分类号： H02M324

CPC分类号： H02M7/4807 ,  H02M3/33576 ,  Y02E10/56

摘要： An isolated and soft-switched power converter is used for DC/DC and DC/DC/AC power conversion. The power converter includes two resonant tank circuits coupled back-to-back through an isolation transformer. Each resonant tank circuit includes a pair of resonant capacitors connected in series as a resonant leg, a pair of tank capacitors connected in series as a tank leg, and a pair of switching devices with anti-parallel clamping diodes coupled in series as resonant switches and clamping devices for the resonant leg. The power converter is well suited for DC/DC and DC/DC/AC power conversion applications in which high-voltage isolation, DC to DC voltage boost, bidirectional power flow, and a minimal number of conventional switching components are important design objectives. For example, the power converter is especially well suited to electric vehicle applications and load-side electric generation and storage systems, and other applications in which these objectives are important. The power converter may be used for many different applications, including electric vehicles, hybrid combustion/electric vehicles, fuel-cell powered vehicles with low-voltage starting, remote power sources utilizing low-voltage DC power sources, such as photovoltaics and others, electric power backup systems, and load-side electric storage and generation systems.

摘要翻译： 隔离和软开关电源转换器用于DC / DC和DC / DC / AC电源转换。 功率转换器包括通过隔离变压器背对背耦合的两个谐振回路电路。 每个谐振回路包括串联连接的一对谐振电容器作为谐振支路，一对串联连接作为储能支路的储能电容器，以及一对具有反并联钳位二极管作为谐振开关串联耦合的开关装置， 用于共振腿的夹紧装置。 电源转换器非常适合于DC / DC和DC / DC / AC电源转换应用，其中高压隔离，DC至DC电压升高，双向功率流和最少数量的常规开关元件是重要的设计目标。 例如，电力转换器特别适用于电动车辆应用和负载侧发电和存储系统以及其中这些目标是重要的其他应用。 功率转换器可用于许多不同的应用，包括电动车辆，混合燃烧/电动车辆，具有低压启动的燃料电池动力车辆，利用低压直流电源的远程电源，例如光伏等。 电力备用系统和负载侧蓄电和发电系统。