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    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。

    Inverter apparatus
    3.
    发明授权
    Inverter apparatus 有权
    变频器

    公开(公告)号：US06844700B2

    公开(公告)日：2005-01-18

    申请号：US10614179

    申请日：2003-07-08

    申请人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Hiroyuki Tomita ,  Junji Kato ,  Teiichi Furukawa

    发明人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Hiroyuki Tomita ,  Junji Kato ,  Teiichi Furukawa

    IPC分类号： H02P23/00 ,  H02P1/16 ,  H02P21/00 ,  H02P27/04 ,  H02P7/42

    CPC分类号： H02P1/16 ,  H02P21/34

    摘要： An inverter apparatus for converting a DC power converted from an input AC power to an output AC power of a variable frequency and a variable electric power to drive an induction motor at a variable speed. The inverter apparatus includes a rectifying unit, a filter capacitor, an inverter unit having an input connected across the filter capacitor, an input current detector and a gate circuitry for driving the inverter unit. An excitation current detection unit detects an excitation current of the induction motor from an output signal of the input current detector, a gate signal for driving the gate circuitry and a reference phase command. A setting unit sets a limitation level of the excitation current, a torque boost voltage command unit produces a torque boost voltage command, and a torque boost voltage compensation unit changes the torque boost voltage command so that the detected excitation current value is smaller than or equal to the limitation level.

    摘要翻译： 一种逆变器装置，用于将从输入AC电力转换的DC电力转换为可变频率和可变电力的输出AC电力，以可变速度驱动感应电动机。 逆变器装置包括整流单元，滤波电容器，具有连接在滤波电容器两端的输入端的反相器单元，输入电流检测器和用于驱动逆变单元的门电路。 励磁电流检测单元根据输入电流检测器的输出信号，用于驱动门电路的栅极信号和基准相位指令来检测感应电动机的励磁电流。 设定单元设定励磁电流的限制电平，转矩提升电压指令单元产生转矩提升电压指令，转矩提升电压补偿单元改变转矩提升电压指令，使检测出的励磁电流值小于等于 到限制级别。

    Inverter apparatus
    4.
    发明授权
    Inverter apparatus 有权
    变频器

    公开(公告)号：US06741063B2

    公开(公告)日：2004-05-25

    申请号：US10099973

    申请日：2002-03-19

    申请人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Hiroyuki Tomita ,  Junji Kato ,  Teiichi Furukawa

    发明人： Keijiro Sakai ,  Toshiaki Okuyama ,  Kinya Nakatsu ,  Hiroyuki Tomita ,  Junji Kato ,  Teiichi Furukawa

    IPC分类号： H02P763

    CPC分类号： H02P1/16 ,  H02P21/34

    摘要： Induction voltage command Em* is obtained from inverter's primary frequency command &ohgr;1* and torque boost voltage commander produces torque boost voltage command &Dgr;Vz* in accordance with &ohgr;1* while integrator produces reference phase command &thgr;d*. uvw/dq converter detects motor excitation current Id (equivalent of no-load current). Next, deviation of excitation current limitation level command Idmax* and detected Id is inputted to limiter processing unit to produce torque boost voltage compensation value &Dgr;Vc for varying &Dgr;Vz* so that Id is smaller than or equal to Idmax*. Inverted &Dgr;Vz* is set up as a lower limiter value of the limiter processing unit. Next, &Dgr;Vc and &Dgr;Vz* are added to produce final compensated torque boost voltage command &Dgr;Vt* and &Dgr;Vt* and Em* are added to produce q-axis voltage command Vq* of the inverter output voltage.

    摘要翻译： 感应电压指令Em *从变频器的主要频率指令ω1*获得，而转矩提升电压指令器根据ω1*产生转矩提升电压指令DeltaVz *，而积分器产生参考相位指令。 uvw / dq转换器检测电机励磁电流Id（等效空载电流）。 接下来，将励磁电流限制电平指令Idmax *和检测到的Id的偏差输入到限幅器处理单元，以产生用于改变DeltaVz *的转矩提升电压补偿值DeltaVc，使得Id小于或等于Idmax *。 反相DeltaVz *设置为限幅器处理单元的下限值。 接下来，增加DeltaVc和DeltaVz *以产生最终补偿的转矩提升电压命令DeltaVt *和DeltaVt *和Em *以产生逆变器输出电压的q轴电压指令Vq *。

    Method for measuring characteristic constants of alternating current motor and controller thereof based on said method
    5.
    发明授权
    Method for measuring characteristic constants of alternating current motor and controller thereof based on said method 失效
    基于所述方法测量交流电动机的特性常数及其控制器的方法

    公开(公告)号：US5475293A

    公开(公告)日：1995-12-12

    申请号：US121896

    申请日：1993-09-16

    申请人： Keijiro Sakai ,  Tsunehiro Endo ,  Toshiaki Okuyama ,  Hiroshi Fujii

    发明人： Keijiro Sakai ,  Tsunehiro Endo ,  Toshiaki Okuyama ,  Hiroshi Fujii

    IPC分类号： H02P21/00 ,  H02P21/04 ,  H02P21/14 ,  H02P5/34

    CPC分类号： H02P21/04 ,  H02P21/16 ,  H02P21/34 ,  H02P2207/01

    摘要： An inverter corrects an output voltage in accordance with the magnitude of output voltage error due to a dead time and an ON-state voltage drop in power elements so as to energize an AC motor in a manner of single phase alternating current excitation, by calculating an active component of current Iq and a reactive component of current Id from the phase .theta. of an excitation voltage vector and a detected instantaneous current value iu, and by measuring characteristic constants of the motor, including a combined resistance (r.sub.1 +r.sub.2) and a combined leakage inductance (l.sub.1 +l.sub.2), from an excitation voltage command value Vc.sub.1, Id and Iq. The measured values are used as the control constants for a speed sensorless vector control. Further, the resistances r.sub.1, r.sub.2, and a self-inductance L.sub.1, which are control constants, can be obtained based on the component in a primary voltage vector direction of a primary current vector Iq' and the component .pi./2 delayed from the primary voltage vector direction of the primary current vector Id'. In this way, the characteristic constants can be accurately measured without any inverter output voltage sensor.

    摘要翻译： 逆变器根据由于功率元件的死区时间和导通状态电压降引起的输出电压误差的大小来校正输出电压，以便以单相交流激励的方式对AC电动机通电，通过计算 电流Iq的有效分量和来自激发电压矢量的相位θ和检测到的瞬时电流值iu的电流Id的无功分量，以及通过测量电动机的特性常数，包括组合电阻（r1 + r2）和组合电阻 漏电感（l1 + I2），从励磁电压指令值Vc1，Id和Iq。 测量值用作无速度传感器矢量控制的控制常数。 此外，作为控制常数的电阻r1，r2和自感L1可以基于一次电流矢量Iq'的一次电压矢量方向的分量和从主电流矢量延迟的分量pi / 2来获得 初级电流矢量Id'的电压矢量方向。 以这种方式，可以在没有任何变频器输出电压传感器的情况下精确测量特性常数。

    Method of inverter control and apparatus of the same
    6.
    发明授权
    Method of inverter control and apparatus of the same 有权
    变频器控制方法及其设备

    公开(公告)号：US06229719B1

    公开(公告)日：2001-05-08

    申请号：US09655489

    申请日：2000-09-05

    申请人： Keijiro Sakai ,  Toshiaki Okuyama ,  Hiroshi Fujii

    发明人： Keijiro Sakai ,  Toshiaki Okuyama ,  Hiroshi Fujii

    IPC分类号： H02M540

    CPC分类号： H02P21/18 ,  H02P21/22 ,  H02P21/26

    摘要： An inverter control apparatus includes an instruction calculator which receives a speed instruction and a particular component of a current of a motor to obtain an output frequency instruction and output voltage instructions of an inverter and a current estimator to estimate, according to a reference phase obtained by integrating a current detection value of one phase of an ac motor and an output frequency instruction thereof, currents of other phases of the ac motor. The current estimator includes a uvw/dq converter which converts a fixed coordinate system into a rotating coordinate system, a dq/uvw converter which is connected to the uvw/dq converter and which converts the rotating coordinate system into the fixed coordinate system, and a closed loop to input an output from the dq/uvw converter to the uvw/dq converter. This system can therefore estimate currents of other phases according to the motor current of one phase.

    摘要翻译： 逆变器控制装置包括指令计算器，其接收速度指令和电动机的电流的特定分量，以获得反相器和电流估计器的输出频率指令和输出电压指令，以根据由 集成交流电动机的一相的电流检测值和其输出频率指令，交流电动机的其他相的电流。 电流估计器包括将固定坐标系转换为旋转坐标系的uvw / dq转换器，连接到uvw / dq转换器并将旋转坐标系转换成固定坐标系的dq / uvw转换器， 闭环将dq / uvw转换器的输出输入到uvw / dq转换器。 因此，该系统可以根据一相的电机电流来估计其他相的电流。

    PWM inverter with long carrier wave insertion
    7.
    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
    8.
    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
    9.
    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。