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    • 4. 发明申请
    • INDUCTION MOTOR CONTROLLER
    • 感应电动机控制器
    • US20080169783A1
    • 2008-07-17
    • US11843686
    • 2007-08-23
    • KOUKI YAMAMOTOToshiaki OkuyamaHiroyuki TomitaYoshitaka IwajiKoichiro Nagata
    • KOUKI YAMAMOTOToshiaki OkuyamaHiroyuki TomitaYoshitaka IwajiKoichiro Nagata
    • H02P27/08
    • H02P21/09H02P21/16H02P2207/01
    • The present invention provides an induction motor controller which includes: a circuit for generating a d-axis current reference signal from a d-axis current command value and a periodically varying periodic signal; a d-axis current controller for controlling a d-axis motor current flowing through an induction motor to be controlled to match the d-axis current reference signal; parameter determining means for calculating and determining a motor parameter of the induction motor based on a deviation of the d-axis motor current from the d-axis current reference signal, and controlling a voltage applied to the induction motor using a compensation voltage calculated from the calculated and determined motor parameter, in which a control parameter for controlling the induction motor is set based on the calculated and determined motor parameter.
    • 本发明提供一种感应电动机控制器,其包括:用于根据d轴电流指令值和周期性变化的周期信号产生d轴电流参考信号的电路; d轴电流控制器,用于控制流过感应电动机的d轴电动机电流以被控制以匹配d轴电流参考信号; 参数确定装置,用于基于d轴电动机电流与d轴电流参考信号的偏差来计算和确定感应电动机的电动机参数,并且使用从所述d轴电流参考信号计算的补偿电压来控制施加到感应电动机的电压 计算和确定的电动机参数,其中基于所计算和确定的电动机参数来设定用于控制感应电动机的控制参数。
    • 5. 发明授权
    • Machine tool
    • 机床
    • US06841911B2
    • 2005-01-11
    • US10083531
    • 2002-02-27
    • Houng Joong KimToshiaki Okuyama
    • Houng Joong KimToshiaki Okuyama
    • B23Q15/00B23Q5/04B23Q5/10H02K1/22H02K1/27H02K7/12H02K16/02H02K21/16H02K29/06
    • H02K16/02H02K7/12
    • A machine tool provided with an electric motor which can maintain the fixed output power in a wide speed range. The electric motor has a stator having a primary winding, and a rotor having a field magnet and a shaft, said field magnet comprising a first field magnet having different polarity magnetic poles sequentially arranged in a rotating direction and a second field magnet having different polarity magnetic poles sequentially arranged in a rotating direction, and a mechanism for shifting one field magnet in axial and rotating directions with respect to the other field magnet, whereby a composite magnetic field of said first and said second field magnets is changed.
    • 一种具有能够在宽的速度范围内保持固定输出功率的电动机的机床。 电动机具有初级绕组的定子和具有场磁体和轴的转子,所述磁场磁体包括顺序地沿旋转方向排列的极性不同的磁极的第一场磁体和具有不同极性磁性的第二磁场磁体 依次布置在旋转方向的磁极和用于相对于另一个磁场磁体沿轴向和旋转方向移动一个磁场磁体的机构,从而改变所述第一和第二磁场的复合磁场。
    • 8. 发明授权
    • Method and apparatus for operating a variable speed power generation
system
    • 用于操作变速发电系统的方法和装置
    • US5029288A
    • 1991-07-02
    • US340681
    • 1989-04-20
    • Yuzuru KubotaToshiaki Okuyama
    • Yuzuru KubotaToshiaki Okuyama
    • H02J3/38H02P9/00H02P9/04H02P9/42
    • H02P9/42H02P9/007
    • A method and apparatus for operating a variable speed power generation system in which the generated output of an induction generator is adjusted by controlling current in the secondary side of the induction generator. Rotation speeds of the induction generator coupled to a prime mover are detected, a secondary current command for controlling a difference between a detected rotation speed and a speed command to be zero is generated, and current in the secondary side of the induction generator is controlled on the basis of the secondary current command. In addition, the generated output of the induction generator is sequentially detected in order that a command value of the speed command is sequentially changed when a detected generated output shows a tendency to increase and, when a detected generated output shifts from an increasing tendency to a decreasing tendency, the command value of the speed command is once changed to a lower speed value and thereafter returned to a higher speed value, thereby maximizing efficiency of the variable speed power generation system and reducing costs.
    • 一种用于操作变速发电系统的方法和装置,其中通过控制感应发电机的次级侧的电流来调节感应发电机的产生的输出。 检测到耦合到原动机的感应发电机的转速,产生用于将检测到的转速和速度指令之间的差异控制为零的二次电流指令,将感应发电机次级侧的电流控制在 二次电流指令的基础。 此外,感应发电机的产生的输出被顺序地检测,以便当检测到的产生的输出显示出增加的趋势时,速度指令的指令值被顺序地改变,并且当检测到的产生的输出从增加趋势转移到 速度指令的指令值一度改变为较低速度值,然后返回到较高速度值,从而使变速发电系统的效率最大化并降低成本。
    • 10. 发明授权
    • PWM Converter with control circuit responsive to minimum holding current
    • PWM转换器,具有响应于最小保持电流的控制电路
    • US4486824A
    • 1984-12-04
    • US356923
    • 1982-03-10
    • Toshiaki OkuyamaYuzuru KubotaHiroshi Nagase
    • Toshiaki OkuyamaYuzuru KubotaHiroshi Nagase
    • H02M7/48H02M7/515H02M7/757
    • H02M7/757
    • In a converter comprising gate turn-off thyristors, a current at an A.C. part of the converter is detected and a polarity of the detected current and a magnitude of the detected current is checked to determine if it is below a holding current level for maintaining the gate turn-off thyristors on. If the detected current is below the holding current level, a pulse width modulated signal is produced as a gate signal. If the detected level is above the holding current level, a short duration pulse synchronized with a rise and a fall of the pulse width modulated signal is produced as the gate signal. The gate signal is supplied to only those of the gate turn-off thyristors which correspond to the polarity of the detected current.
    • 在包括栅极截止晶闸管的转换器中,检测转换器的AC部分的电流,检测检测到的电流的极性和检测到的电流的大小,以确定其是否低于保持电流水平 门极关断晶闸管。 如果检测到的电流低于保持电流电平,则产生脉宽调制信号作为门信号。 如果检测到的电平高于保持电流电平,则产生与脉宽调制信号的上升和下降同步的短持续时间脉冲作为门信号。 栅极信号仅供给与检测到的电流的极性对应的栅极截止晶闸管的栅极信号。