异步电机离线参数辨识方法研究

徐晓冰,秦晓佳,王建平

Research on Offline Parameters Estimation of Induction Motors

Xiaobing Xu,Xiaojia Qin,Jianping Wang

表1 注入电流频率与等效电路阻抗关系

Tab.1 The relationship between the frequency of input current and the impedance of equivalent circuit

频率/Hz 0 0.1 3 50 近似条件 Xm′ =Xσ = 0 Xm′<<Rr′ Xm′ ≈Rr′ Xm′>>Rr′ Req Rs Rs Rs + $\frac{R'^{2}_{r}X'^{2}_{m}}{R'^{2}_{r}+X'^{2}_{m}}\qquad$ Rs + Rr Xeq 0 Xσ + Xm′ Xσ + $\frac{R'^{2}_{r}X'_{m}}{R'^{2}_{r}+X'^{2}_{m}}\qquad$ Xσ