Problem in Model predictive controller for DC-DC converter Plant model cannot be a pure direct feed-through system without additional dynamics

Question

kuldeep kumar 2021-1-21

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评论： brain dr 2022-2-7

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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.

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Answer 1

brain dr 2021-2-16

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Hello, i have the same problem, did you solve it?

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Answer 2

Leonardo Costa 2021-5-11

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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.

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Leonardo Costa 2021-5-29

Mmmmm... I don't know. In your position I would change the MPC with a NLMPC

brain dr 2022-2-7

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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Answer 3

Ashish Choubey 2021-6-1

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hi kuldeep

have you solved the problem of MPC implementation on boost converter? I am also facing the same problem

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Gilles Audry BAYINA LOUZOLO 2021-6-16

Hi. Have you solved this problem please ?

brain dr 2022-2-7

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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