【摘要】 提出一种矢量控制中异步电机转子时间常数的在线校准方法。这种方法是在励磁电流中间歇地叠加窄的负脉冲信号,再根据此叠加脉冲对转矩的影响来判断转子的磁场定向是否准确,进而校准转子时间常数。仿真结果表明,利用这种方法能够很好地跟踪转子时间常数的变化。更多还原

【Abstract】 A method was proposed to tune the rotor time constant of an induction motor in vector control. The method added negative short duration pulses to the constant flux reference current, and we can then fred out whether rotor-flux was oriented accurately according to the change of torque and hereby adjust the rotor time constant. It is verified by simulation results that vector control with this method can tail after change of the rotor time constant well.更多还原