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43 条记录 (耗时 0.032 秒)

    Inverter device
    2.
    发明授权
    Inverter device 有权
    变频器

    公开(公告)号：US06496397B2

    公开(公告)日：2002-12-17

    申请号：US09826857

    申请日：2001-04-06

    申请人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Seiji Ishida ,  Hiroshi Fujii ,  Junji Kato ,  Masahiro Hiraga

    发明人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Seiji Ishida ,  Hiroshi Fujii ,  Junji Kato ,  Masahiro Hiraga

    IPC分类号： H02M7537

    CPC分类号： H02M7/48 ,  H02M7/53875 ,  H02P27/08

    摘要： An inverter device has a three-phase inverter for converting DC electric power into AC power for supplement to an AC electric motor and a control device operatively associated therewith, and the control device includes a phase current detection section for outputting a phase current waveform based on a DC input current and an operational processor section for performing operational processing for control of said inverter device based on the phase current waveform. Thereby, the inverter device can be constructed to be very compact.

    摘要翻译： 逆变器装置具有三相逆变器，用于将直流电力转换为交流电，以补充交流电动机和与其可操作地相关联的控制装置，并且控制装置包括相电流检测部分，用于输出基于 直流输入电流和操作处理器部分，用于基于相电流波形执行用于控制所述逆变器装置的操作处理。 因此，逆变器装置可以被构造成非常紧凑。

    PWM inverter with long carrier wave insertion
    3.
    发明授权
    PWM inverter with long carrier wave insertion 有权
    PWM逆变器具有长载波插入

    公开(公告)号：US06704212B2

    公开(公告)日：2004-03-09

    申请号：US10222048

    申请日：2002-08-16

    申请人： Teiichi Furukawa ,  Masahiro Hiraga ,  Hiroyuki Tomita ,  Seiji Ishida ,  Toshiaki Okuyama

    发明人： Teiichi Furukawa ,  Masahiro Hiraga ,  Hiroyuki Tomita ,  Seiji Ishida ,  Toshiaki Okuyama

    IPC分类号： H02M112

    CPC分类号： H02M7/53875 ,  H02M2001/0009

    摘要： In calculation 3 phase AC output current Iu, Iv,Iw of an inverter based on the input DC current Idc of the inverter, it is difficult to detect the DC current Idc when the line-to-line voltage pulse width is narrow, thereby the DC current Idc pulse width becomes narrower. The frequency Fc of the carrier wave C is lowered in a phase whose line-to-line voltage is high, thereby the DC current Idc pulse width is set wider. As a result, the current detection is enabled.

    摘要翻译： 在逆变器的输入DC电流Idc的逆变器的3相AC输出电流Iu，Iv，Iw的计算中，当线间电压脉冲宽度窄时，难以检测直流电流Idc， 直流电流Idc脉冲宽度变窄。载波C的频率Fc在线间电压高的相位下降，由此使直流电流Idc脉冲宽度变宽。 结果，启用电流检测。

    PWM converter system
    4.
    发明授权
    PWM converter system 失效
    PWM转换器系统

    公开(公告)号：US06556464B2

    公开(公告)日：2003-04-29

    申请号：US09956257

    申请日：2001-09-20

    申请人： Keijirou Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Seiji Ishida ,  Hiroshi Fujii ,  Junji Kato ,  Masahiro Hiraga

    发明人： Keijirou Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Seiji Ishida ,  Hiroshi Fujii ,  Junji Kato ,  Masahiro Hiraga

    IPC分类号： H02M75387

    CPC分类号： H02M1/4233 ,  H02M1/4216 ,  H02M2001/0012 ,  Y02B70/126

    摘要： A single-phase PWM converter system in accordance with the present invention employs a sample-and-hold circuit which samples and holds a direct current in the state wherein one of two-phase gate signals of a positive or negative side arm is ON and the other phase is OFF, determines the sign of an output of the sample-and-hold circuit according to the two-phase gate condition, detects a phase current at the input side of the converter, and controls a voltage at the input side of the converter so that the detected current value agrees with a power supply current command. Further, a three-phase PWM converter system in accordance with the present invention detects the effective current and the ineffective current of the power supply current from the direct current, and based on the values, controls the PWM converter so that the sine wave power supply current whose power supply power factor is 1 is provided.

    摘要翻译： 根据本发明的单相PWM转换器系统采用采样和保持电路，其采样和保持直流电流，其中正或负侧臂的两相门信号之一为ON， 其他相位为OFF，根据两相门条件确定采样保持电路的输出的符号，检测转换器输入侧的相电流，并控制转换器的输入侧的电压 转换器，使得检测到的电流值与电源电流指令一致。此外，根据本发明的三相PWM转换器系统从直流电流检测电源电流的有效电流和无效电流，并且基于 在该值上，控制PWM转换器，使得提供功率因数为1的正弦波电源电流。

    Method for controlling a vehicle provided with an electric power converter
    5.
    发明授权
    Method for controlling a vehicle provided with an electric power converter 失效
    用于控制设置有电力转换器的车辆的方法

    公开(公告)号：US06556460B2

    公开(公告)日：2003-04-29

    申请号：US10212841

    申请日：2002-08-07

    申请人： Seiji Ishida ,  Toshiaki Okuyama ,  Tetsuo Kojima ,  Kiyoshi Nakata ,  Akira Horie

    发明人： Seiji Ishida ,  Toshiaki Okuyama ,  Tetsuo Kojima ,  Kiyoshi Nakata ,  Akira Horie

    IPC分类号： H02M114

    CPC分类号： H02M1/143

    摘要： The voltage applied to a power converter is detected by a voltage detector, a function generator produces a voltage proportional to this detected voltage, and a high-pass filter detects an AC component superimposed on the voltage. An adder adds a bias voltage to this AC component, and an adder adds the output from the adder and the output from the function generator. The output from the adder is compared with a triangular wave produced from a rectangular wave generator, and a switching element is controlled to make switching operation according to the compared result. When a DC current is decreased by the AC component, a resistance current Ib is increased so that the AC components superimposed on the current and resistance current can be cancelled out.

    摘要翻译： 施加到功率转换器的电压由电压检测器检测，功能发生器产生与该检测电压成比例的电压，高通滤波器检测叠加在电压上的AC分量。 加法器向该AC分量加上偏置电压，加法器将来自加法器的输出和来自函数发生器的输出相加。 将来自加法器的输出与由矩形波发生器产生的三角波进行比较，并且根据比较结果控制开关元件进行开关操作。 当通过AC分量减小DC电流时，电阻电流Ib增加，从而可以消除叠加在电流和电阻电流上的AC分量。

    Device for controlling induction motor and method of controlling the same
    7.
    发明授权
    Device for controlling induction motor and method of controlling the same 有权
    用于控制感应电动机的装置及其控制方法

    公开(公告)号：US6147470A

    公开(公告)日：2000-11-14

    申请号：US254707

    申请日：1999-03-12

    申请人： Hironori Ohashi ,  Makoto Takase ,  Hiroyuki Tomita ,  Seiji Ishida

    发明人： Hironori Ohashi ,  Makoto Takase ,  Hiroyuki Tomita ,  Seiji Ishida

    IPC分类号： H02P21/00 ,  H02P3/00 ,  H02P5/40

    CPC分类号： H02P21/36

    摘要： A vector control apparatus having a DC braking function which is insusceptible to trip even upon DC braking and scarcely suffers vibration upon stoppage is provided.The control apparatus includes a DC braking control arithmetic unit 1 and switches S1, S3 and S4 controlled thereby, wherein in a vector control mode, the DC braking control arithmetic unit 1 sets all the switches S1, S3 and S4 to position a for realizing the vector control. When a DC control state is to be validated from the above-mentioned state, phase of voltage vector is calculated to change over the switches S1 and S3 to position b, and the absolute value of the q-axis current is compared with a reference value .alpha.. When the absolute value of the q-axis current is smaller than the reference value .alpha., the switch S4 is changed over to the position b to thereby effectuate only the d-axis current control.According to the present invention, there is provided a vector control apparatus having a tripless DC braking function. Since vibration occurring upon stoppage can be suppressed, stopping position accuracy upon DC braking in emergency can be enhanced. Further, low-noise systems are made available.

    摘要翻译： PCT No.PCT / JP96 / 02625 Sec。 371 1999年3月12日 102（e）1999年3月12日PCT PCT 1996年9月13日PCT公布。 公开号WO98 / 11663 日期1998年3月19日提供具有直流制动功能的矢量控制装置，即使在直流制动时也不易跳闸，并且在停止时几乎不受振动。 控制装置包括直流制动控制运算单元1和由此控制的开关S1，S3和S4，其中在矢量控制模式中，直流制动控制运算单元1将所有开关S1，S3和S4设置为用于实现 矢量控制。 当从上述状态来确认直流控制状态时，计算电压矢量的相位，将开关S1，S3切换为位置b，将q轴电流的绝对值与基准值进行比较 α 。 当q轴电流的绝对值小于参考值α时，开关S4切换到位置b，从而仅实现d轴电流控制。 根据本发明，提供一种具有三重直流制动功能的矢量控制装置。 由于能够抑制停止时发生的振动，所以可以提高紧急时的直流制动时的停止位置精度。 此外，还提供低噪声系统。

    Frequency control method for inverter and apparatus therefor
    8.
    发明授权
    Frequency control method for inverter and apparatus therefor 失效
    变频器频率控制方法及其设备

    公开(公告)号：US5574352A

    公开(公告)日：1996-11-12

    申请号：US277977

    申请日：1994-07-20

    申请人： Tsunehiro Endo ,  Tsuyoshi Sasaki ,  Hiroshi Fujii ,  Seiji Ishida

    发明人： Tsunehiro Endo ,  Tsuyoshi Sasaki ,  Hiroshi Fujii ,  Seiji Ishida

    IPC分类号： G05B13/02 ,  H02H7/122 ,  H02M7/48 ,  H02P23/00 ,  H02P27/06 ,  H02P5/34

    CPC分类号： H02P23/20 ,  H02H7/122 ,  Y10S706/90

    摘要： A trip-resistant frequency control inverter which prevents an overcurrent and overvoltage by frequency control of a motor. Such arrangement provides for generating an accelerating or decelerating rate from the output from a fuzzy controller, which inputs the difference between limiting values and detected values and their changes. The arrangement also provides at the time of acceleration a control which automatically generates an accelerating rate which maintains the current in the vicinity of the limiting value, and a normal acceleration part which adjusts the set accelerating rate. The arrangement further provides at the time of deceleration a control which automatically generates a decelerating rate which maintains the current and voltage in the vicinity of their limiting values, and a normal deceleration part which adjusts the set decelerating rate. Further, the arrangement provides during a steady state operation a control which automatically determines the accelerating or decelerating rate which maintains the current in the vicinity of the limiting value, and wherein the two control parts for automatic and normal operation are selectable by an operator.

    摘要翻译： 防跳频变频器，通过电机的频率控制来防止过电流和过电压。 这种布置提供从模糊控制器的输出产生加速或减速率，其输入限制值和检测值之间的差异及其变化。 该装置在加速时也提供自动产生将电流保持在极限值附近的加速度的控制，以及调整设定加速度的正常加速部。 该装置在减速时进一步提供自动产生保持其极限值附近的电流和电压的减速率的控制和调整设定减速率的正常减速部。 此外，该布置在稳态操作期间提供自动确定将电流保持在极限值附近的加速或减速速率的控制，并且其中用于自动和正常操作的两个控制部件可由操作者选择。