Problem in Model predictive controller for DC-DC converter Plant model cannot be a pure direct feed-through system without additional dynamics
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Hi
I am designing a model predictive controller for the DC-DC converter. I have developed a DC-DC converter in the matlab simulink. I have connected approprietly MPC controller with DC-DC converter. However, when I am designing the MPC controller in MPC desginer and using define and linearize the plant model, i am receving an error "Plant model cannot be a pure direct feed-through system without additional dynamics"
I am attaching the snapshot of my simulation and error.
I am not able to identifiy
the mistake.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/495338/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/495328/image.png)
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Risposte (3)
Leonardo Costa
il 11 Mag 2021
Hi I had the same issue. I solved specifying the proper MV and MO signals. Honestly I cannot understand if you choosed the correct signal, but I suggest to try all the signals and hope it works.
3 Commenti
Leonardo Costa
il 29 Mag 2021
Mmmmm... I don't know. In your position I would change the MPC with a NLMPC
brain dr
il 7 Feb 2022
Hi guys, you can't use the MPC tool for a model with real elements, like an inductor, resistance, MOSFET..etc, in this case, you should build MPC as a function block (m-file ) including the state-space model and function model, the output signal of this block is generated according to all probabilities of (on/off) switches in the circuit (Mosfet).
Ashish Choubey
il 1 Giu 2021
hi kuldeep
have you solved the problem of MPC implementation on boost converter? I am also facing the same problem
2 Commenti
brain dr
il 7 Feb 2022
Hi guys, you can't use the MPC tool for a model with real elements, like an inductor, resistance, MOSFET..etc, in this case, you should build MPC as a function block (m-file ) including the state-space model and function model, the output signal of this block is generated according to all probabilities of (on/off) switches in the circuit (Mosfet).
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