利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.018 秒)

    Control device for a pulse-width modulated inverter
    1.
    发明授权
    Control device for a pulse-width modulated inverter 失效
    用于脉宽调制逆变器的控制装置

    公开(公告)号：US4179727A

    公开(公告)日：1979-12-18

    申请号：US852980

    申请日：1977-11-18

    申请人： Nobuyoshi Muto ,  Yasuo Matsuda ,  Kazuo Honda

    发明人： Nobuyoshi Muto ,  Yasuo Matsuda ,  Kazuo Honda

    IPC分类号： H02M7/48 ,  H02M7/527 ,  H02M7/515

    CPC分类号： H02M7/527

    摘要： A control device for a pulse-width modulated inverter comprises means for generating as a carrier wave a triangular wave synchronizing with an AC output from the inverter, means for generating as a modulating wave a train of rectangular wave pulses which synchronize with the triangular wave and have a width corresponding to a section effective for a modulating operation and a predetermined amplitude, voltage level setting means for setting the amplitude of the train of rectangular wave pulses, and means for modulating the triangular wave with the train of rectangular wave pulses and generating a control pulse for the AC output. The rectangular wave pulses are so set as to have a modulating level of zero in the proximity of a point corresponding to the zero point of the AC output of each phase thereby to remove a frequency divider for adjusting input frequencies of the triangular wave generating means and the modulating wave generating means and to prevent a useless modulating operation leading only to an increase in the number of commutations of the inverter.

    摘要翻译： 用于脉冲宽度调制的反相器的控制装置包括用于产生与来自反相器的AC输出同步的三角波作为载波的装置，用于产生与三角波同步的一串矩形波脉冲作为调制波; 具有对应于对于调制操作有效的部分的宽度和用于设定矩形波脉冲列的振幅的预定幅度的电压电平设定装置，以及用矩阵波脉冲串调制三角波的装置， AC输出的控制脉冲。 矩形波脉冲被设置为在与每相的AC输出的零点相对应的点附近具有零调制电平，从而去除用于调整三角波产生装置的输入频率的分频器， 调制波产生装置并且防止无用的调制操作仅导致逆变器的换向数量的增加。

    Power conversion apparatus
    2.
    发明授权
    Power conversion apparatus 失效
    电力转换装置

    公开(公告)号：US4231083A

    公开(公告)日：1980-10-28

    申请号：US931008

    申请日：1978-08-04

    申请人： Yasuo Matsuda ,  Kazuo Honda ,  Nobuyoshi Muto

    发明人： Yasuo Matsuda ,  Kazuo Honda ,  Nobuyoshi Muto

    IPC分类号： H02M1/08 ,  H02M7/515 ,  H02M7/523 ,  H02M7/155 ,  H02H7/122

    CPC分类号： H02M7/5236 ,  H02M1/08 ,  H02M7/5157

    摘要： When a power conversion apparatus such as inverter or chopper comprises gate turn-off thyristors (GTO's), current limiting reactors are connected to cathodes of the GTO's and opposite ends of each of the reactors are connected to positive and negative terminals, respectively, of a gate power supply which supplies a turn-on current and a turn-off current to the respective GTO. With this arrangement, an energy stored in each of the reactors at the turn-off of the GTO is absorbed by the gate power supply.

    摘要翻译： 当诸如逆变器或斩波器的功率转换装置包括栅极截止晶闸管（GTO）时，限流电抗器连接到GTO的阴极，并且每个反应器的相对端分别连接到正极和负极端子 栅极电源，其向相应的GTO提供导通电流和关断电流。 通过这种布置，在GTO关断时存储在每个电抗器中的能量被栅极电源吸收。

    Method and apparatus for controlling induction motor
    5.
    发明授权
    Method and apparatus for controlling induction motor 失效
    感应电动机控制方法及装置

    公开(公告)号：US4437051A

    公开(公告)日：1984-03-13

    申请号：US441624

    申请日：1982-11-15

    申请人： Nobuyoshi Muto ,  Hiroshi Nagase ,  Keijiro Sakai ,  Yasuo Matsuda

    发明人： Nobuyoshi Muto ,  Hiroshi Nagase ,  Keijiro Sakai ,  Yasuo Matsuda

    IPC分类号： H02P21/00 ,  H02P21/08 ,  H02P27/04 ,  H02P5/40

    CPC分类号： H02P21/09 ,  H02P2207/01

    摘要： Disclosed is a method and apparatus for operating an induction motor by an inverter of the pulse-width modulation (PWM) type, wherein the slip frequency is calculated from the speed command and the actual motor speed so as to produce the phase compensation signal, and the frequency command for the inverter is produced by adding the phase compensation signal, the slip frequency signal and the motor speed signal. The primary current command is calculated from the slip frequency, the amplitude ratio of pulse-width modulation is calculated basing on the primary current command and the actual primary current, and the inverter is controlled in accordance with the amplitude ratio so as to control the primary current of the induction motor.

    摘要翻译： 公开了一种通过脉宽调制（PWM）型逆变器操作感应电动机的方法和装置，其中根据速度指令和实际电动机速度计算转差频率，以产生相位补偿信号;以及 通过将相位补偿信号，转差频率信号和电动机速度信号相加来产生变频器的频率指令。 初始电流指令是根据转差频率计算的，脉冲宽度调制的幅度比是根据初级电流指令和实际一次电流来计算的，并根据振幅比来控制变频器，以控制主电流 感应电机的电流。