@jraef
I did not know about using rotor bars to estimate rotor position. That's very interesting. The textbooks did not cover that.
@itsmoked
I agree it's very hard to find the details of the algorithm in commercial drives and it's limitation without experiments. And, I realized now it's just...
@LionelHutz @FacEngrPe @itsmoked Thanks for your inputs.
I agree the FOC algorithm runs much faster than the mechanical process so there is no really "sudden change". But the transient aspect can be ignored for my question.
Another way to ask the same question: Suppose I run the controller in...
That's a good point. But it could also happen during normal FOC operation.
For instance, the motor is running at 50Hz and stable FOC operation. Now there is a sudden load change and the rotor speed drops to 10Hz. Now will the FOC maintain a 50Hz input or does the FOC algorithm automatically end...
This is a long question involving closed loop motor control and I couldn't find any resources on this. ANY help is appreciated.
Is it possible that the VFD ends up operating at the high slip region when running DIRECT sensorless rotor flux oriented control? Direct sensorless rotor flux control...
