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    Motor drive system for AC motors
    33.
    发明授权
    Motor drive system for AC motors 失效
    交流电机电机驱动系统

    公开(公告)号：US07064514B2

    公开(公告)日：2006-06-20

    申请号：US10781745

    申请日：2004-02-20

    申请人： Yoshitaka Iwaji ,  Tsunehiro Endo ,  Kiyoshi Sakamoto ,  Tomofumi Okubo

    发明人： Yoshitaka Iwaji ,  Tsunehiro Endo ,  Kiyoshi Sakamoto ,  Tomofumi Okubo

    IPC分类号： H02P27/04

    CPC分类号： H02P21/00 ,  H02P21/24

    摘要： A motor drive system without any portion for directly detecting the rotor position, rotation speed and motor phase currents, capable of realizing a high-performance variable speed drive even at high carrier frequencies. When detecting a current from a DC power supply of an inverter for driving a motor, applied voltages and frequencies to the motor are controlled based on sampled values by sampling a current flowing as intermittent pulses in the vicinity of each power conduction time period.

    摘要翻译： 没有任何部分用于直接检测转子位置，转速和电动机相电流的电动机驱动系统，即使在高载波频率下也能实现高性能变速驱动。 当检测来自用于驱动电动机的逆变器的直流电源的电流时，通过对在每个电力传导时间周期附近的间歇脉冲流动的电流进行采样，基于采样值来控制对电动机施加的电压和频率。

    Synchronous moter driving apparatus
    34.
    发明申请
    Synchronous moter driving apparatus 有权
    同步电机驱动装置

    公开(公告)号：US20060113948A1

    公开(公告)日：2006-06-01

    申请号：US11206211

    申请日：2005-08-18

    申请人： Daigo Kaneko ,  Yoshitaka Iwaji ,  Kiyoshi Sakamoto ,  Tsunehiro Endo ,  Tomofumi Okubo

    发明人： Daigo Kaneko ,  Yoshitaka Iwaji ,  Kiyoshi Sakamoto ,  Tsunehiro Endo ,  Tomofumi Okubo

    IPC分类号： H02P1/46

    CPC分类号： H02P6/18 ,  H02P21/18 ,  H02P2203/01 ,  H02P2207/05

    摘要： A synchronous motor driving apparatus having a power converter which applies AC variable voltages having variable frequency to a synchronous motor includes a pulsating current application unit for applying pulsating current to the synchronous motor and a magnetic pole position presumption unit. The magnetic pole position presumption unit detects two current values ΔIdcp1 and ΔIdcp2 on the positive side and two current values ΔIdcn1 and ΔIdcn2 on the negative side of the pulsating current and presumes the magnetic pole position of the synchronous motor on the basis of difference between change rates of ΔIdcp1→ΔIdcp2 and ΔIdcp1→ΔIdcp2.

    摘要翻译： 具有向同步电动机施加可变频率的交流可变电压的电力转换器的同步电动机驱动装置包括用于向同步电动机施加脉动电流的脉动电流施加单元和磁极位置推定单元。 磁极位置推测单元在脉动电流的负侧检测正极侧的两个电流值DeltaIdcp 1和DeltaIdcp 2，并且在脉动电流的负侧检测两个电流值DeltaIdcn 1和DeltaIdcn 2，并且基于同步电动机的磁极位置 DeltaIdcp 1 - > DeltaIdcp 2和DeltaIdcp 1 - > DeltaIdcp 2的变化率之间的差异。

    Driving systems of AC motor
    35.
    发明授权
    Driving systems of AC motor 有权
    交流电机驱动系统

    公开(公告)号：US07030589B2

    公开(公告)日：2006-04-18

    申请号：US10787435

    申请日：2004-02-27

    申请人： Daigo Kaneko ,  Yoshitaka Iwaji ,  Kiyoshi Sakamoto ,  Tsunehiro Endo ,  Tomofumi Okubo

    发明人： Daigo Kaneko ,  Yoshitaka Iwaji ,  Kiyoshi Sakamoto ,  Tsunehiro Endo ,  Tomofumi Okubo

    IPC分类号： H02P27/04

    CPC分类号： H02P6/185 ,  H02P21/18 ,  H02P21/32 ,  H02P2203/01

    摘要： An AC motor control apparatus that is applicable to commonly used PM motors and capable of detecting the magnetic pole position with simple algorithm. The AC motor control apparatus comprises an inverter for applying arbitrary AC power to an AC motor and a controller for sending a control signal to the inverter. The controller comprises a ripple current generator for supplying a ripple current to the AC motor and a magnetic pole position estimator. The magnetic pole position estimator observes at least two current values of the ripple current for both positive and negative sides of the ripple current to estimate the magnetic pole position of the AC motor.

    摘要翻译： 一种适用于常用PM电机并能够用简单算法检测磁极位置的交流电动机控制装置。 AC电动机控制装置包括用于向AC电动机施加任意AC电力的逆变器和用于向逆变器发送控制信号的控制器。 控制器包括用于向交流电动机提供纹波电流的纹波电流发生器和磁极位置估计器。 磁极位置估计器观察纹波电流的正侧和负侧纹波电流的至少两个电流值，以估计交流电机的磁极位置。

    Synchronous motor driving system
    36.
    发明授权
    Synchronous motor driving system 失效
    同步电机驱动系统

    公开(公告)号：US06650081B2

    公开(公告)日：2003-11-18

    申请号：US10099590

    申请日：2002-03-13

    申请人： Yoshitaka Iwaji ,  Tsunehiro Endo ,  Kiyoshi Sakamoto ,  Yuhachi Takakura

    发明人： Yoshitaka Iwaji ,  Tsunehiro Endo ,  Kiyoshi Sakamoto ,  Yuhachi Takakura

    IPC分类号： H02P146

    CPC分类号： H02P21/24 ,  H02P6/21 ,  H02P6/34

    摘要： Axial error calculation unit is provided for estimating an axial error &Dgr;&thgr; between a d-q axis and a dc-qc axis by using Ld, Lq, Ke, Id*, Iq*, Idc and Iqc in a range of all rotational speeds except zero of a rotational speed command of a synchronous motor, Ld denoting an inductance on a magnetic pole axis d of the synchronous motor, Lq an inductance on a q axis orthogonal to the magnetic pole axis d, Ke a generated power constant of the motor, Id* a current command of the d axis, Iq* a current command on a q axis, Idc a detected current value on an assumed dc axis on control, and Iqc a detected current value on an assumed qc axis orthogonal to the assumed dc axis. Irrespective of presence of saliency, position sensorless control can be achieved in a wide range a low to high speed zone.

    摘要翻译： 提供轴向误差计算单元，用于通过使用除了零的零以外的所有转速的范围内的Ld，Lq，Ke，Id *，Iq *，Idc和Iqc来估计dq轴和dc-qc轴之间的轴向误差Deltatheta 同步电动机的转速指令Ld表示同步电动机的磁极轴d上的电感，Lq是与磁极轴d正交的aq轴上的电感，Ke是电动机的发电功率常数，Id *电流 d轴的命令，Iq * aq轴上的电流指令，Idc是控制上假设的直流轴上的检测到的电流值，Iqc是与假定的直流轴正交的假设qc轴上的检测电流值。 无论存在显着性，可以在低速到高速区域的广泛范围内实现无位置传感器控制。

    Frequency control method for inverter and apparatus therefor
    37.
    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。

    Method for measuring characteristic constants of alternating current motor and controller thereof based on said method
    38.
    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。

    Zero current switching circuit and converting apparatus using the same
    39.
    发明授权
    Zero current switching circuit and converting apparatus using the same 失效
    零电流开关电路及其使用的转换装置

    公开(公告)号：US5359278A

    公开(公告)日：1994-10-25

    申请号：US901212

    申请日：1992-06-19

    申请人： Yasuo Notohara ,  Motoo Futami ,  Kazuo Tahara ,  Tsunehiro Endo

    发明人： Yasuo Notohara ,  Motoo Futami ,  Kazuo Tahara ,  Tsunehiro Endo

    IPC分类号： G05F1/70 ,  G05F1/613 ,  H02M3/155 ,  H02M3/158 ,  H02P27/06

    CPC分类号： H02M3/158 ,  G05F1/613 ,  H02M7/5387 ,  H02M2001/0058 ,  H02M2001/342 ,  Y02B70/1491

    摘要： A switching circuit can reduce switching power loss and can vary at least one of the switching frequency and the conduction rate of switching of the switching circuit with less dependency on a frequency of a resonating circuit. A converter unit employs the switching circuit for expansion of control range of an output voltage. A primary switching element forming the switching circuit is provided with a resonance circuit and an auxiliary switching element. With the auxiliary switching element, resonance operation is achieved. The switching circuit is applicable to switching portions of a DC-DC converter unit, an inverter or the like.

    摘要翻译： 开关电路可以降低开关功率损耗，并且可以改变开关电路的开关频率和开关导通率中的至少一个，同时对谐振电路的频率的依赖性较小。 A转换器单元采用开关电路来扩展输出电压的控制范围。 形成开关电路的初级开关元件设置有谐振电路和辅助开关元件。 利用辅助开关元件，实现谐振操作。 开关电路适用于DC-DC转换器单元，逆变器等的切换部分。