How to solve the error "Conversion to logical from optim.prob​​lemdef.Op​t​imizatio​nC​onstrai​nt is not possible!"

 n = numel(daily_Ppv);
 
 % VARIABLES
    Ppvg = optimvar('Ppvg',1,n,'LowerBound',0,'UpperBound',daily_Ppv);     
    Ppvb = optimvar('Ppvb',1,n,'LowerBound',0,'UpperBound',daily_Ppv);     
    Pbe = optimvar('Pbe',1,n,'LowerBound',0,'Upperbound',Pemax);            
    Ppve = optimvar('Ppve',1,n,'LowerBound',0,'UpperBound',daily_Ppv);       
    Pelet = optimvar('pelet',1,n,'LowerBound',0,'UpperBound',Pemax);         
    SOC = optimvar('SOC',1,n,'LowerBound',SOCmin,'UpperBound',SOCmax);      
    
% CONSTRAINS
    PowerFlow.Constraints.PPV = daily_Ppv==Ppvb+ Ppvg + Ppve;                     
    PowerFlow.Constraints.PB = Ppvb*eta_pvb <= Pbmax;            
    PowerFlow.Constraints.ELET1 = Pelet == Ppve*eta_pve + Pbe*eta_be;
    PowerFlow.Constraints.ELET2 = Pelet <= Pemax; 
    PowerFlow.Constraints.BAT = optimconstr(n);                
        for i = 1:n
            if Ppve(i) >= Pelet(i) %% this line reports the error
               PowerFlow.Constraints.BAT(i) = Pbe(i)==0;
            else 
               PowerFlow.Constraints.BAT(i) = Pbe(i)>0;
            end

Hi, I have meet the pfollowing problem in MATLAB. The battery cannot charge/discharge at the same time so, in the last constraints I tried to write this. When I ran the code the error says: "Conversion to logical from optim.problemdef.OptimizationInequality is not possible."

Appreciate for your help!

Answer 1

[Alan Weiss]

You probably need to formulate your constraints according to the procedures in Integer and Logical Modeling.

Alan Weiss

MATLAB mathematical toolbox documentation