Control method of pulse width modulation inverter and pulse width modulation inverter system
    1.
    发明公开
    Control method of pulse width modulation inverter and pulse width modulation inverter system 失效
    用于使用脉冲宽度调制和逆变器系统与脉冲宽度调制逆变器控制方法。

    公开(公告)号:EP0371442A1

    公开(公告)日:1990-06-06

    申请号:EP89121902.4

    申请日:1989-11-28

    申请人: HITACHI, LTD.

    IPC分类号: H02P7/628

    摘要: In spatial vector control of a pulse width modulation (PWM) inverter (40) adapted for variable speed drive of an induction motor (50), a difference vector ( ẽ(n)) between magnetic flux vectors (φ̃ (n), φ̃ (n-1 ))occurring during adjacent sampling periods is generated by synthesizing a zero vector (V 0 , Ṽ 7 ) and voltage vectors ( Ṽ 1 - Ṽ 6 ) in such a manner that a resultant voltage vector always includes as component a minimum unit of zero vector or voltage vector, whereby even when the angular speed of rotation of the magnetic flux changes, the switching frequency of the PWM inverter is prevented from decreasing and the current ripple is reduced.

    摘要翻译: 在脉冲宽度调制(PWM)逆变器的空间矢量控制(40),适于(磁通矢量之间的感应电动机(50),的差矢量(@(n))的@(n)的变速驱动器@( N-1))中的相邻采样周期发生的是由寻找的方式合成一个零矢量(@ 0,@ 7)和电压矢量(@ 1相似@ 6)产生做所得的电压矢量总是作为组分包括最小单元 的零矢量或矢量电压,从而即使当的磁通量的变化的旋转的角速度,所述PWM逆变器的开关频率从降低和电流波动减小防止。