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    • 2. 发明授权
    • Synchronous motor and control method of synchronous motor
    • 同步电机同步电动机及其控制方法
    • US08421395B2
    • 2013-04-16
    • US12420154
    • 2009-04-08
    • Daisuke MaedaKenji SakuraiHiroyuki HasegawaHidefumi ShirahamaMitsuhiro Mishima
    • Daisuke MaedaKenji SakuraiHiroyuki HasegawaHidefumi ShirahamaMitsuhiro Mishima
    • H02P3/18
    • H02P6/08H02P6/16
    • A synchronous motor including therein a three-phase inverter and position sensors, having a unit for calculating a digital input current value from the analog output of an input current detection circuit that detects the input current flowing into the DC input terminal of the three-phase inverter, and a digital feedback speed control unit for adjusting the amplitudes and frequency of the AC voltages outputted from the three-phase inverter in such a manner that the motor speed calculated by a motor speed calculation unit 41 on the basis of the outputs of the position sensors approaches a speed command value received by a communication reception unit from outside the synchronous motor. The synchronous motor further includes therein a communication transmission unit for transmitting the input current value and the motor speed to outside the synchronous motor.
    • 一种同步电动机,包括三相逆变器和位置传感器,具有用于从输入电流检测电路的模拟输出计算数字输入电流值的单元,该输入电流检测电路检测流入三相的DC输入端的输入电流 逆变器和数字反馈速度控制单元,用于调整从三相逆变器输出的AC电压的幅度和频率,使得由电动机速度计算单元41基于电动机速度计算单元41的输出计算的电动机速度 位置传感器从同步电动机外部接近由通信接收单元接收的速度指令值。 同步电动机还包括用于将输入电流值和电动机速度传送到同步电动机外部的通信传输单元。
    • 10. 发明授权
    • Control method and control device of permanent-magnet type synchronous motor
    • 永磁同步电动机的控制方法和控制装置
    • US06954050B2
    • 2005-10-11
    • US10784803
    • 2004-02-24
    • Kazuaki TobariTsunehiro EndoHidefumi ShirahamaYoshiyuki TaguchiTomofumi Okubo
    • Kazuaki TobariTsunehiro EndoHidefumi ShirahamaYoshiyuki TaguchiTomofumi Okubo
    • H02P29/00H02P6/08H02P6/18H02P21/00H02P21/06H02P21/14H02P27/04H02P27/06H02P1/30
    • H02P21/06H02P6/18H02P2207/05
    • The object of the invention is to inhibit the axial displacement caused by the insufficiency of a control response angular frequency of a frequency arithmetic unit of a synchronous motor and realize high-precision torque control also in acceleration/deceleration. To achieve the object, the axial displacement of the synchronous motor caused by the insufficiency of the control response angular frequency of the frequency arithmetic unit is estimated in consideration of the control response angular frequency and input Δθc3 (=Δθc1+Δθc2) including an estimated value Δθc2 in addition to an axial displacement operated value Δθc1 to the frequency arithmetic unit is acquired. Hereby, even if the frequency arithmetic unit has an insufficient control response angular frequency, the quantity of axial displacement which will be caused by the insufficiency is estimated as a second axial displacement signal Δθc2, is added and input. Therefore, actual axial displacement Δθc1 of the synchronous motor is stable at a value substantially close to zero.
    • 本发明的目的是抑制由同步电动机的频率运算单元的控制响应角频率不足引起的轴向位移,并且在加速/减速中也实现高精度的转矩控制。 为了达到该目的,考虑到控制响应角频率和输入Deltathetac 3(= Deltathetac 1 + Deltathetac 2),估计由频率运算单元的控制响应角频率不足导致的同步电动机的轴向位移,包括 获得除了轴向位移操作值Deltathetac 1之外的估计值Deltathetac 2到频率运算单元。 因此,即使频率运算单元具有不足的控制响应角频率,也可以将由不足引起的轴向位移量估计为第二轴向位移信号Deltathetac 2并被输入。 因此,同步电动机的实际轴向位移Deltathetac 1在基本上接近于零的值下是稳定的。