Variable Speed Driver for Induction Motors - Constant V/Hz Control

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Juan Diego Rios Penaloza
回答： Sabin 2024-1-21
Hello everybody.
I am trying to implement what should be a "simple" control for induction motors. I attach the *.mdl file in case you want to take a look.
I am following the next scheme [1]:
Instead of ωr in the second "sum" block, I am using ωr*.
I don't know why, when the speed approaches the reference, I get an oscillation that brings my model to instability. I find this very strange since I do not implement any transients or anything like that.
Thank you all!
[1] Bose, Bimal K. 2002. “Modern Power Electronics and AC Drives.” Prentice-Hall. https://doi.org/10.1016/S0927-0248(96)00085-2.

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回答（1 个）

Sabin
Sabin 2024-1-21
Simscape Electrical provides a block implementing Scalar Control:
https://www.mathworks.com/help/sps/ref/inductionmachinescalarcontrol.html
For an example about how to use it to control the induction motor:
https://www.mathworks.com/help/sps/ug/asynchronous-machine-scalar-control.html

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