Flux is not controllable in Direct Torque Control of IM

  • #1
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Hi all,

I was trying to simulate a direct torque and flux controlled induction motor in simulink.
Even though ive managed to control torque within the band, i can't seem to be able to control the flux.
It stays for a while within its hysteresis band and escapes after about 0.1 sec and keeps on increasing, and about 0.2 secs later torque escapes its own band ( im presuming its because of the rapidly increasing phase current sustaining the increasing flux). The switching table is giving the correct output.
What could be going wrong. I am using the simulink models of igbt universal bridge and induction motor.
Help!
 

Answers and Replies

  • #2
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Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

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