how i can optimise weights for PCC used Genetic algorithm

hi every one i work in wind energy domaine using DFIG controlling with predective current control but i want to optimisie the wights of the cost funcgtion (exempl fun = (id_ref-id_mes)^2+(iq_ref-iq_mes)^2+lamda*(vc_ref-vc1)) this cost function contain to elmeant one principlae the current and the second side is less important i want to optmise this weight in ordre to acheive bset lamda where the current follows to its reference and allows to control balancing vlotage