两相感应电机仿真问题求助

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弱弱地问下：两相感应电动机（，空载启动时，如何用MATLAB仿真出定子两相的电流曲线呢？（是纯粹采用编程实现，还是有更简单的方法呢？）
   等效电路模型是怎么样的呢？谢谢！望大侠们指教！
具体内容如下：
In this simulation, a 2-pole, 2-phase, 5 hp. 110 volts, 60 Hz induction machine is to be studied. The machine’s parameters expressed in ohms are:

rs = 0.295, Xms = 13.25,
Xls = 0.503, X¢lr = 0.209, r¢r = 0.144,

Br = 0.01 N×m×sec, Var = Vbr = 0 (short-circuited rotor)

The reactances are expressed at 60 Hz. The total inertia is J = 0.026 kg-m2. At t = 0, rated voltages, Vas=110*1.41*cos(377t),
Vbs=110*1.41*sin(377t) ,are applied to the machine and the rotor accelerates from stall with no-load torque.

Perform the following:
1)
Simulate the free-accelerations characteristics in the stationary reference frame (i.e., iqs(t), ids(t), Te(t), and wr(t)).
2)
Compute the steady-state value of
and the dynamic response of ia(t). Locate the peak value of
ia(t) and then compute the ratio of . Discuss the significance of the .
3)
Derive the steady-state equivalent circuit model for the machine. Show all steps.