Method for determining the behaviour of one electrical or electronic power component, with respect to a working limit condition, the method comprising the following operational steps: A. defining one three-dimensional mathematical space of operational parameters of interest for said electrical or electronic power component, wherein the coordinates of an n-th point P n of said three-dimensional mathematical space correspond to specific values of said operational parameters of interest for said electrical or electronic power component; B. defining one exploration field of said three-dimensional mathematical space, the working limit condition for said electrical or electronic power component and one set R of response parameters of interest for said electrical or electronic power component; characterised by the following additional operational steps: C. exploring, said three-dimensional mathematical space by: - generating at least one stimulus, determined based on the coordinates of the points P n of said three-dimensional mathematical space and on said exploration field, - applying said at least one stimulus to said at least one electrical or electronic power component, and - detecting one corresponding response to said stimulus thereby applied, from said electrical or electronic power component, and based on said response thereby detected, determining, and storing one finite subset of points P* n of said three-dimensional mathematical space, among the points P n of said three-dimensional mathematical space, for which said working limit condition of said electronic power component is met; and D. determining one mathematical model that analytically describes the locus of said points P* n of said three-dimensional mathematical space thereby stored, thus obtaining the locus of said operational parameters that determine a response of said electrical or electronic power component that meets said working limit condition. A. defining one three-dimensional mathematical space of operational parameters of interest for said electrical or electronic power component, wherein the coordinates of an n-th point P n of said three-dimensional mathematical space correspond to specific values of said operational parameters of interest for said electrical or electronic power component; B. defining one exploration field of said three-dimensional mathematical space, the working limit condition for said electrical or electronic power component and one set R of response parameters of interest for said electrical or electronic power component; characterised by the following additional operational steps: C. exploring, said three-dimensional mathematical space by: - generating at least one stimulus, determined based on the coordinates of the points P n of said three-dimensional mathematical space and on said exploration field, - applying said at least one stimulus to said at least one electrical or electronic power component, and - detecting one corresponding response to said stimulus thereby applied, from said electrical or electronic power component, and based on said response thereby detected, determining, and storing one finite subset of points P* n of said three-dimensional mathematical space, among the points P n of said three-dimensional mathematical space, for which said working limit condition of said electronic power component is met; and - generating at least one stimulus, determined based on the coordinates of the points P n of said three-dimensional mathematical space and on said exploration field, - applying said at least one stimulus to said at least one electrical or electronic power component, and - detecting one corresponding response to said stimulus thereby applied, from said electrical or electronic power component, and D. determining one mathematical model that analytically describes the locus of said points P* n of said three-dimensional mathematical space thereby stored, thus obtaining the locus of said operational parameters that determine a response of said electrical or electronic power component that meets said working limit condition.