MATLAB: Photovoltaic MPPT fuzzy logic in Matlab/Simulink

Question

A very good day to all of you.

I am currently simulating a boost converter circuit where the duty cycle is being controlled by a fuzzy logic controller. Now, the fuzzy logic controller inputs are my Power and Current.

From what i have known, the inputs are actually a function which denotes as: change of P = P(n) – P(n-1).

My question is, how to implement this on Simulink block diagram?

Answer 1

If your signal is discrete, you can use the Difference block to compute the difference between the current time step and the previous one.

HTH,

Arnaud