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I am having the following problem: I worked my way through variou books and papers to model an induction motor and a basic indirect vector control scheme (using clarke and park transform etc).

Now, all is reasonably clear but 1 thing: how is the rotor flux value estimated.

It is my understanding that this value is a constant and non zero (in a permanent magnet synchronous machine this value can be set to zero).

I use a basic speed PI controller to calculate the iq_ref but how would I calculate id_ref for which I would need the rotor flux?

I hope there is someone how can help me.

cheers,

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# Rotor flux estimation for vector control

Can you offer guidance or do you also need help?

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