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

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.

Answer 1

[brain dr]

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

Answer 2

[Leonardo Costa]

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.

[Kumar Prabhakar]

SIR I AM CHOOSING SIGNALS BUT PROBLEM STILL NOT SOLVED

[Leonardo Costa]

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

[brain dr]

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).

Answer 3

[Ashish Choubey]

hi kuldeep

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

[Gilles Audry BAYINA LOUZOLO]

Hi. Have you solved this problem please ?

[brain dr]

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).