In the induction motor under the operating conditions described in Example 6-1, all the motor parameters are estimated correctly except the rotor resistance is estimated to be one-half its actual value. Obtain the steady state values of

$\frac{i_{sd}}{i^*_{sd}},\quad \frac{i_{sq}}{i^*_{sq}},\quad \frac{T_{em}}{T^*_{em}},\quad \text{and}\quad \theta _{err}.$

Question

In the induction motor under the operating conditions described in Example 6-1, all the motor parameters are estimated correctly except the rotor resistance is estimated to be one-half its actual value. Obtain the steady state values of

$\frac{i_{sd}}{i^*_{sd}},\quad \frac{i_{sq}}{i^*_{sq}},\quad \frac{T_{em}}{T^*_{em}},\quad \text{and}\quad \theta _{err}.$

[latex]\frac{i_{sd}}{i^*_{sd}},\quad \frac{i_{sq}}{i^*_{sq}},\quad \frac{T_{em}}{T^*_{em}},\quad ext{and}\quad heta _{err}.[/latex]

Accepted Answer

The results obtained using the MATLAB file EX6-2calc.m included on the accompanying website are as follows:

[latex]\frac{i_{s d}}{i_{s d}^*}=1.37, \quad \frac{i_{s q}}{i_{s q}^*}=0.69, \quad \frac{T_{e m}}{T_{e m}^*}=0.94, ext { and } \quad heta_{ err }=0.338 ext{ rad}.[/latex]

All of these values match the steady-state values obtained in Example 6-1.

Question 6.2: In the induction motor under the operating conditions descri......

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