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Applying a control unit to an asynchronous machine which is operated without a rotary encoder

机译:将控制单元应用于没有旋转编码器的异步电机

摘要

Exemplary embodiments provide a method for connection or application of a converter to a rotating asynchronous machine which is operated without an encoder, without a high current and without a torque surge. The method provides a control unit, using an inverter or converter, for feeding the asynchronous machine which rotates at a mechanical rotary speed. The asynchronous machine is regulated by the control unit. A stator current vector is ascertained from measured currents of the stator windings of the asynchronous machine and a rotating stator voltage vector. Calculation is effected in respect of a stator flux change vector from the stator current vector, the stator voltage vector and a stator resistance in accordance with a motor model. An angle difference between the stator current vector and the stator flux change vector is calculated. That angle difference is regulated to a reference value of 90° or −90°, wherein an output signal of the regulator corresponds to a rotary field frequency, to be impressed, of the voltage vector of the stator. Regulation is effected in respect of an amplitude of the stator voltage vector by way of a current regulator to which the difference of a current reference value and a parameter corresponding to the amplitude of the stator current is made available at the input as a regulating difference.
机译:示例性实施例提供了一种用于将转换器连接或应用到旋转异步电机的方法,该异步电机在没有编码器,没有大电流且没有转矩波动的情况下运行。该方法提供了使用逆变器或转换器的控制单元,用于给以机械转速旋转的异步电机供电。异步电机由控制单元调节。从异步电机的定子绕组的测量电流和旋转的定子电压矢量确定定子电流矢量。根据电动机模型,根据定子电流矢量,定子电压矢量和定子电阻对定子磁通变化矢量进行计算。计算定子电流矢量和定子磁通变化矢量之间的角度差。该角度差被调节为90°或-90°的参考值,其中,调节器的输出信号对应于待施加的定子的电压矢量的旋转磁场频率。通过电流调节器对定子电压矢量的幅度进行调节,在该电流调节器上在输入端提供电流参考值和对应于定子电流的幅度的参数的差作为调节差。

著录项

  • 公开/公告号US8350517B2

    专利类型

  • 公开/公告日2013-01-08

    原文格式PDF

  • 申请/专利权人 HEIKO STICHWEH;

    申请/专利号US20080746029

  • 发明设计人 HEIKO STICHWEH;

    申请日2008-12-04

  • 分类号H02P21/12;H02P27/06;

  • 国家 US

  • 入库时间 2022-08-21 16:42:45

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