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I need help in designing closed loop speed control of three phase induction motor

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siddhartha mudgal
siddhartha mudgal 2018-9-23
关闭： Sabin 2023-1-31
I want to design a closed loop speed control of V/F control for three phase induction motor in MATLAB.I stuck at a point that after T=2.2(Simulation Time) at Tm=0(Torque to motor), the system becomes too much unstable and the speed starts to decrease drastically. Also if the load is change, the instant(T) of starting unstability changes.I know the unstability is due to the PI controller but, i didn't find any clue to fix it, so i want help in designing it's closed loop part.

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