Difficulty in getting inverter transfer function

Question

ashish ahir 2015-8-13

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https://ww2.mathworks.cn/matlabcentral/answers/233726-difficulty-in-getting-inverter-transfer-function

评论： ayoub reffai 2022-5-4

Hi, i want to design an inverter with controllable output AC voltage. To check PID controller action i require full bridge inverter transfer function as that is my plant in model. full bridge inverter has DC value and 4 gate signals as input. It has AC wave as output. i am not getting this tranfer function to verify PID action. as i have seen examples given by mathworks, it seems that it requires transfer function to verify PID control action.please suggest a way.

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Arkadiy Turevskiy 2015-8-13

It would be helpful if you attach your model and MATLAB code, and explain what you tried already and what exactly does not work

ayoub reffai 2022-5-4

hi sir please i need help , i couldnt link up the output of the full bridge dc to ac to the induction motor i tried everything please help me

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Answer 1

bharadwaj r 2015-8-17

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https://ww2.mathworks.cn/matlabcentral/answers/233726-difficulty-in-getting-inverter-transfer-function#answer_189482

Transfer function of a inverter is pretty complex . PID control can be achieved without knowing the system transfer function also. Try Ziegler-Nicholas method of PID tuning.