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9 条记录 (耗时 0.01 秒)

    An electric power converter
    2.
    发明公开
    An electric power converter 失效
    Elektrischer Leistungskonverter。

    公开(公告)号：EP0354535A2

    公开(公告)日：1990-02-14

    申请号：EP89114656.5

    申请日：1989-08-08

    申请人： HITACHI, LTD.

    发明人： Ueda, Shigeta ,  Hombu, Mitsuyuki ,  Honda, Kazuo ,  Morinaga, Daisaku

    IPC分类号： H02M7/515

    CPC分类号： H02M7/5157

    摘要： A power converter comprising: a three phase bridge circuit, each phase of which is composed of series-­connected positive and negative arms, each of which arms includes series-connected GTOs (51-54); free-wheel diodes (55-58) coupled in reverse parallel with every GTO; phase snubber circuits(73) provided for every phase, each of which includes series-­connected diodes (76,77) coupled across the series-connected arms through a first capacitor (74), a junction of the diodes being coupled to a junction (14) of the series-connected arms through a second capacitor (75) and a junction of the first capacitor and the series-connected diodes being coupled to a negative dc terminal through a resistor (78); and individual snubber circuits (59,60) provided in the respective GTOs, each of which includes a series connection of a diode (62,65;68,71) and a third capacitor (63,66;69,72) as well as a resistor (61,64;67,70) connected in parallel with the diode; in which the first capacitor has capacitance much larger than the second capacitor, which in turn has capacitance much larger than the third capacitor.

    摘要翻译： 一种功率转换器，包括：三相桥式电路，其每相由串联连接的正极和负极臂组成，每个臂包括串联连接的GTO（51-54）; 与每个GTO反向并联耦合的续流二极管（55-58）; 为每相提供的相位缓冲电路（73），每个相位包括通过第一电容器（74）跨过串联连接的臂耦合的串联二极管（76,77），二极管的接点耦合到接点 所述第一电容器和所述串联连接的二极管的结点通过电阻器耦合到负的直流端子; 以及设置在各个GTO中的各个缓冲电路（59,60），每个缓冲器电路包括二极管（62,65; 68,71）和第三电容器（63,66; 69,72）的串联连接，以及 与二极管并联连接的电阻器（61,64; 67,70） 其中第一电容器具有比第二电容器大得多的电容，其又具有比第三电容器大得多的电容。

    Control circuit for semiconductor element with control electrode
    3.
    发明公开
    Control circuit for semiconductor element with control electrode 失效
    为与控制电极的半导体元件的控制电路。

    公开(公告)号：EP0066796A1

    公开(公告)日：1982-12-15

    申请号：EP82104646.3

    申请日：1982-05-27

    申请人： Hitachi, Ltd.

    发明人： Honda, Kazuo ,  Matsuda, Yasuo ,  Musha, Shuji

    IPC分类号： H03K17/16

    CPC分类号： H03K17/16

    摘要： A control circuit for a semiconductor element with a control electrode includes a signal transmission circuit (30, 31), in which two switching elements (2,4) made conductive when a control signal is supplied from a control signal source (35) to the switching elements (2, 4) through a signal insulating element (1), are provided so that the control signal is transferred to a turn-on circuit (40) for the semiconductor element only when the switching elements (2, 4) are simultaneously made conductive.

    Control apparatus and method for controlling an inverter for driving AC motor
    6.
    发明公开
    Control apparatus and method for controlling an inverter for driving AC motor 失效
    控制装置和用于控制用于驱动AC电动机的逆变器的方法。

    公开(公告)号：EP0360210A2

    公开(公告)日：1990-03-28

    申请号：EP89117283.5

    申请日：1989-09-19

    申请人： HITACHI, LTD.

    发明人： Ueda, Shigeta ,  Honda, Kazuo ,  Ikimi, Takashi ,  Matsuda, Toshihiko ,  Nagase, Hiroshi ,  Hombu, Mitsuyuki ,  Mutoh, Nobuyoshi

    IPC分类号： H02M7/5387

    CPC分类号： H02M7/53873 ,  H02M2007/53876

    摘要： Disclosed is a control method and a control apparatus (7) for controlling a PWM inverter (2). The PWM inverter receives AC power and generates an AC output having a controlled frequency to be supplied to an AC motor (3). A circuit (8, 9) is provided for generating, on the basis of a given running command (ω*), a PWM signal controlling the inverter with a given sampling period, and a further circuit (10) controls the PWM signal generating circuit, whereby the AC motor generates an electromagnetic tone preselected so as to correspond to desired information when the AC motor is driven by output of the inverter controlled by the PWM signal. The above described desired information may be information representing the running state of the motor or selected music.

    摘要翻译： 公开了一种控制方法和一种用于控制PWM逆变器（2）的控制装置（7）。 PWM逆变器接收AC电力，并产生具有可控频率的AC输出的速率要被提供给交流电动机（3）。 的电路（8,9），用于生成，给定的运行指令（ω-*）的基础上，PWM信号控制以给定的采样周期的逆变器，和另一电路（10）控制所述PWM信号产生电路 ，由此，交流电动机产生的电磁音的速率预选，以便当交流电动机通过由PWM信号控制逆变器的输出来驱动，以对应于所希望的信息。 上述所希望的信息可以是表示发动机或选择的音乐的运行状态的信息。

    Control apparatus and method for controlling an inverter for driving AC motor
    8.
    发明公开
    Control apparatus and method for controlling an inverter for driving AC motor 失效
    用于控制用于驱动交流电动机的逆变器的控制装置和方法

    公开(公告)号：EP0360210A3

    公开(公告)日：1990-11-28

    申请号：EP89117283.5

    申请日：1989-09-19

    申请人： HITACHI, LTD.

    发明人： Ueda, Shigeta ,  Honda, Kazuo ,  Ikimi, Takashi ,  Matsuda, Toshihiko ,  Nagase, Hiroshi ,  Hombu, Mitsuyuki ,  Mutoh, Nobuyoshi

    IPC分类号： H02M7/5387

    CPC分类号： H02M7/53873 ,  H02M2007/53876

    摘要： Disclosed is a control method and a control apparatus (7) for controlling a PWM inverter (2). The PWM inverter receives AC power and generates an AC output having a controlled frequency to be supplied to an AC motor (3). A circuit (8, 9) is provided for generating, on the basis of a given running command (ω*), a PWM signal controlling the inverter with a given sampling period, and a further circuit (10) controls the PWM signal generating circuit, whereby the AC motor generates an electromagnetic tone preselected so as to correspond to desired information when the AC motor is driven by output of the inverter controlled by the PWM signal. The above described desired information may be information representing the running state of the motor or selected music.

    An electric power converter
    9.
    发明公开
    An electric power converter 失效
    电力转换器

    公开(公告)号：EP0354535A3

    公开(公告)日：1990-07-04

    申请号：EP89114656.5

    申请日：1989-08-08

    申请人： HITACHI, LTD.

    发明人： Ueda, Shigeta ,  Hombu, Mitsuyuki ,  Honda, Kazuo ,  Morinaga, Daisaku

    IPC分类号： H02M7/515

    CPC分类号： H02M7/5157

    摘要： A power converter comprising: a three phase bridge circuit, each phase of which is composed of series-­connected positive and negative arms, each of which arms includes series-connected GTOs (51-54); free-wheel diodes (55-58) coupled in reverse parallel with every GTO; phase snubber circuits(73) provided for every phase, each of which includes series-­connected diodes (76,77) coupled across the series-connected arms through a first capacitor (74), a junction of the diodes being coupled to a junction (14) of the series-connected arms through a second capacitor (75) and a junction of the first capacitor and the series-connected diodes being coupled to a negative dc terminal through a resistor (78); and individual snubber circuits (59,60) provided in the respective GTOs, each of which includes a series connection of a diode (62,65;68,71) and a third capacitor (63,66;69,72) as well as a resistor (61,64;67,70) connected in parallel with the diode; in which the first capacitor has capacitance much larger than the second capacitor, which in turn has capacitance much larger than the third capacitor.