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    • 8. 发明授权
    • Control device for electric rotating machine
    • 电动旋转机控制装置
    • US08441220B2
    • 2013-05-14
    • US13238309
    • 2011-09-21
    • Akihiro Imura
    • Akihiro Imura
    • H02P21/00
    • H02P21/13H02P21/0017
    • A control device has a predicting unit for predicting a first current flowing through a motor in a next control period, at a predicting time during a predetermined period after a change of switching state in an inverter by using a current detected before the change and for predicting a second current of a control period later than the next control period by one control period by using the predicted first current, a determining unit for determining a next operating state of the inverter by using the predicted second current and an instructed value so as to reduce a change of switching state in the change of the operating state, and a control unit for controlling the inverter to be set in the determined operating state in the next control period and controlling the current of the motor depending on the operating state of the inverter.
    • 控制装置具有预测单元,用于通过使用在变化之前检测到的电流来预测逆变器中的开关状态改变之后的预定时间段中的预测时间来预测下一个控制周期中流过电动机的第一电流,并且用于预测 通过使用预测的第一电流,比下一个控制周期晚一个控制周期的控制周期的第二电流;确定单元,用于通过使用预测的第二电流和指示值来确定逆变器的下一个操作状态,以便减少 改变操作状态的切换状态的变化,以及控制单元,用于控制在下一个控制周期内将所述变频器设定在所述确定的运行状态,并且根据所述逆变器的运行状态来控制所述电动机的电流。
    • 9. 发明授权
    • Method of estimating magnetic pole position in synchronous motor
    • 同步电机磁极位置估算方法
    • US07514896B2
    • 2009-04-07
    • US11505466
    • 2006-08-17
    • Akihiro ImuraYasuaki Aoki
    • Akihiro ImuraYasuaki Aoki
    • H02P1/46
    • H02P6/182H02P21/18H02P2207/05
    • In a method of estimating a magnetic pole position in a synchronous motor, an alternating current voltage having α- and β-axes components in an αβ coordinates system representing a two-phase alternating current coordinates system is applied to the motor, and α- and β-axes components of an alternating current are detected from the motor. A wave height of the alternating current changing with time is approximated to a wave height not depending on time, so that a differentiated value of the wave height with respect to time is substantially set at zero. An induced voltage of the motor is calculated from the components of the alternating current voltage and the components of the alternating current. The magnetic pole position is estimated from the induced voltage.
    • 在估计同步电动机中的磁极位置的方法中,在表示两相交流电坐标系的字母表坐标系中具有α轴和β轴分量的交流电压被施加到电机上,而α 从电机检测交流电流的β轴分量。 随时间变化的交变电流的波高近似于不依赖于时间的波高,使得波高相对于时间的微分值基本上设置为零。 电动机的感应电压根据交流电压和交流电流的分量计算。 从感应电压估计磁极位置。