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    Sensorless control system and method of permanent magnet synchronous motor
    16.
    发明授权
    Sensorless control system and method of permanent magnet synchronous motor 失效
    永磁同步电机无传感器控制系统及方法

    公开(公告)号：US5903128A

    公开(公告)日：1999-05-11

    申请号：US792736

    申请日：1997-01-31

    申请人： Hiroyuki Sakakibara ,  Tomoya Okuno ,  Kazuyoshi Obayashi ,  Hiroya Tsuji

    发明人： Hiroyuki Sakakibara ,  Tomoya Okuno ,  Kazuyoshi Obayashi ,  Hiroya Tsuji

    IPC分类号： H02P6/18 ,  H02P6/16

    CPC分类号： H02P6/18

    摘要： If the magnitude of a voltage command vector to a motor driver is smaller than a preset value in a control period, in each of a predetermined number of subsequent control periods (a compensation period), a pulse voltage vector is added to the voltage command vector so as to make substantially zero the average value of the added pulse voltage vectors during the compensation periods, and the compensated voltage command vector is used for the subsequent calculation. Also, two direction data for each phase winding are stored at the center of each of the two dead times following the edges of a voltage command pulse in each control period. An estimated phase voltage is calculated from the last voltage command pulse width, a phase voltage fluctuation during the two dead time of each control period and the stored direction data. The rotor position angle is precisely calculated from the estimated phase voltage.

    摘要翻译： 如果在控制周期中电动机驱动器的电压指令矢量的大小小于预设值，则在预定数量的后续控制周期（补偿周期）中的每一个中，将脉冲电压矢量加到电压指令矢量 以便在补偿周期期间使相加的脉冲电压矢量的平均值基本上为零，并且补偿的电压命令矢量用于随后的计算。 此外，每个相位绕组的两个方向数据被存储在每个控制周期中的电压指令脉冲的边缘之后的两个死区时间的每一个的中心。 根据最后的电压指令脉冲宽度，每个控制周期的两个死区时间内的相电压波动以及所存储的方向数据计算估计的相电压。 从估计的相电压精确地计算转子位置角度。

    Sensor-less control apparatus for permanent magnet synchronous motor
    17.
    发明授权
    Sensor-less control apparatus for permanent magnet synchronous motor 失效
    无永磁同步电机无传感器控制装置

    公开(公告)号：US5726549A

    公开(公告)日：1998-03-10

    申请号：US599132

    申请日：1996-02-09

    申请人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    发明人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    IPC分类号： H02P21/00 ,  H02P6/08 ,  H02P21/14 ,  H02P27/04 ,  H02P1/46

    CPC分类号： H02P21/18 ,  H02P21/26 ,  H02P6/08

    摘要： A sensor-less control apparatus is designed for a permanent magnet synchronous motor having multiple-phase armature windings and a rotor. The sensor-less control apparatus includes a first device for calculating a rotational angle and an angular velocity of the rotor from phase currents and phase voltages of the armature windings. A second device is operative for controlling energizations of the armature windings in response to the rotational angle and the angular velocity calculated by the first device. A third device is operative for correcting the rotational angle calculated by the first device into a correction-resultant rotational angle and informing the second device of the correction-resultant rotational angle, and for feeding back information of the correction-resultant rotational angle to the first device. A fourth device contained in the third device is operative for low-pass-filtering the rotational angle calculated by the first device and changing the rotational angle into a filtering-resultant rotational angle. A fifth device contained in the third device for, in cases where a previous rotational angle outputted from the fourth device and the rotational angle calculated by the first device are not in a same period, correcting the previous rotational angle into a correction-resultant previous rotational angle and informing the fourth device of the correction-resultant previous rotational angle.

    摘要翻译： 无传感器控制装置设计用于具有多相电枢绕组和转子的永磁同步电动机。 无传感器控制装置包括用于根据电枢绕组的相电流和相电压计算转子的旋转角度和角速度的第一装置。 第二装置用于响应于由第一装置计算的旋转角度和角速度来控制电枢绕组的通电。 第三装置用于将由第一装置计算出的旋转角度校正为校正结果旋转角度，并向第二装置通知校正结果旋转角度，并且将校正结果旋转角度的信息反馈到第一装置 设备。 包含在第三装置中的第四装置用于低通滤波由第一装置计算出的旋转角度并将旋转角度改变成滤波结果旋转角度。 在第三装置中包含的第五装置，在从第四装置输出的先前旋转角度和由第一装置计算的旋转角度不是相同周期的情况下，将先前旋转角度校正为校正结果先前旋转 角度并通知第四装置校正结果的先前旋转角度。