公开(公告)号：US06819070B2

公开(公告)日：2004-11-16

申请号：US10365268

申请日：2003-02-12

申请人： Russel J. Kerkman ,  David Leggate

发明人： Russel J. Kerkman ,  David Leggate

IPC分类号： H02M7521

CPC分类号： H02M1/32 ,  H02M7/53875

摘要： A method and apparatus to be used with a motor controller generating firing pulses to control an inverter, the inverter providing exciting voltage to a motor corresponding to the firing pulses, the voltage having a maximum intended amplitude, the method for substantially eliminating exciting voltage overvoltage by modifying the firing pulses, the method comprising the steps of identifying characteristics of an initial firing pulse, comparing the initial pulse characteristics to an overvoltage characteristic set known to cause overvoltage, where the initial pulse characteristics match the overvoltage characteristic set, altering the initial firing pulse such that the altered firing pulse does not cause overvoltage, identifying an accumulated error corresponding to the altered firing pulse, modifying the firing pulse following the altered firing pulse as a function of the accumulated error to generate a composite firing pulse; and repeating the identifying, comparing, altering, identifying and modifying process with the composite firing pulse as the initial firing pulse.

公开(公告)号：US06219265B1

公开(公告)日：2001-04-17

申请号：US09347104

申请日：1999-07-02

申请人： Steffen Bernet ,  Thomas Brückner ,  Peter Steimer

发明人： Steffen Bernet ,  Thomas Brückner ,  Peter Steimer

IPC分类号： H02M7521

CPC分类号： H02M7/487

摘要： A three-point converter with NPC diodes disposed between bridge halves and a center tap of an intermediate circuit is proposed. A decoupling network is provided for the upper bridge half, a first input of which decoupling network is connected to a positive pole of the intermediate circuit and a first output of the decoupling network is connected to a positive pole of the three-point converter. Furthermore, provision is made of a further decoupling network for the lower bridge half, a first input of the further decoupling network is connected to a negative pole of the intermediate circuit and a first output of the further decoupling network is connected to a negative pole of the three-point converter. The remaining inputs of both of the decoupling networks are connected to the center tap of the intermediate circuit. The remaining outputs of both of the decoupling networks are connected via the NPC diodes to the upper and lower bridge halves. A commutation voltage for the main switches of the upper and lower bridge halves is decoupled from a halved intermediate circuit voltage (Vdc/2) independently of one another by the decoupling networks.

摘要翻译： 提出了一种具有NPC二极管的三点转换器，其布置在桥半部和中间电路的中心抽头之间。 为上桥半部提供去耦网络，其解耦网络的第一输入端连接到中间电路的正极，并且去耦网络的第一输出端连接到三点转换器的正极。 此外，还提供了用于下桥半部分的另外的去耦网络，另外的去耦网络的第一输入端连接到中间电路的负极，而另一去耦网络的第一输出端连接到 三点转换器。 两个去耦网络的剩余输入端连接到中间电路的中心抽头。 两个去耦网络的剩余输出端通过NPC二极管连接到上，下半桥。 用于上，下半桥的主开关的换向电压通过去耦网络彼此独立地从一半的中间电路电压（Vdc / 2）去耦合。

公开(公告)号：US06597590B2

公开(公告)日：2003-07-22

申请号：US10097567

申请日：2002-03-15

申请人： Takashi Ikimi ,  Kiyotaka Kobayashi

发明人： Takashi Ikimi ,  Kiyotaka Kobayashi

IPC分类号： H02M7521

CPC分类号： H02M7/487 ,  H02M1/34 ,  H02M2001/348

摘要： Switching devices conjointly use snubber circuits without disposing for each switching device and is interposed between a DC neutral point N and a positive terminal plate of a DC power source. A second snubber circuit is interposed between the DC neutral point N and a negative plate terminal of a DC power source. A third snubber circuit is interposed between the DC neutral point N and an AC output terminal O. The snubber circuit suppresses the rise of the voltage when each switching device shifts from ON to OFF. The snubber circuit clamps a voltage applied to the switching device when this voltage exceeds the power source voltage during the process in which the switching device shifts from ON to OFF. The snubber circuit clamps a voltage applied to the switching device or when this voltage exceeds the power source voltage during the process.

公开(公告)号：US06392908B1

公开(公告)日：2002-05-21

申请号：US09884930

申请日：2001-06-21

申请人： Hideki Miyazaki ,  Katsunori Suzuki ,  Koji Tateno ,  Junichi Sakano ,  Masahiro Iwamura ,  Mutsuhiro Mori

发明人： Hideki Miyazaki ,  Katsunori Suzuki ,  Koji Tateno ,  Junichi Sakano ,  Masahiro Iwamura ,  Mutsuhiro Mori

IPC分类号： H02M7521

摘要： In a driving apparatus of a power semiconductor element for conducting or interrupting a main current, first resistance variable for changing a first resistance according to a control voltage, and second resistance variable for changing a second resistance according to a voltage between a first and a second terminal are provided, and either one of a voltage of a control power supply or a voltage between the first and the second terminal is voltage-divided by the first resistance and the second resistance, and the divided voltage is applied to a control gate terminal at the time of conducting or interrupting the main current.

公开(公告)号：US06643154B1

公开(公告)日：2003-11-04

申请号：US10070438

申请日：2002-07-24

申请人： Ingvar Hagman

发明人： Ingvar Hagman

IPC分类号： H02M7521

CPC分类号： H02J3/36 ,  H02M7/1626 ,  Y02E60/60

摘要： A method for control of an extinction angle of a line-commutated converter in dependence on a minimum reference value for the extinction angle. The converter has a plurality of valves, each one of the plurality of valves having at least one semiconductor element capable of being fired, and the device has a unit for generating firing control pulses for a commutating valve in dependence on the minimum reference value of the extinction angle according to a given criterion for commutation of a direct current through the converter. The device has a unit for continuously forming an operating value of recovery time for the semiconductor element of a decommutating valve, and a unit for forming the minimum reference value of the extinction angle in dependence of the operating value.

摘要翻译： 根据消光角的最小参考值来控制线换向转换器的消光角的方法。 所述转换器具有多个阀，所述多个阀中的每一个具有至少一个能够被点火的半导体元件，并且所述装置具有用于根据所述转换阀的最小参考值产生用于换向阀的点火控制脉冲的单元 消光角按照给定的准则换向通过转换器的直流电流。 该装置具有用于连续地形成去转换阀的半导体元件的恢复时间的操作值的单元，以及用于根据操作值形成消光角的最小参考值的单元。

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。