Reformulating Extended Harmonic Domain Models for Accurate Representation of Harmonics Dynamics

A major issue in the modeling of harmonics dynamics via extended harmonic domain (EHD) has been detected and thoroughly analyzed in a recently published paper. It consists on incurred error of individual harmonic response when a step change in either source or parameter variable is applied to a system modeled in the EHD. This paper demonstrates that the error is due to incorrect initial conditions of the EHD state-space model at the time of step change and proposes an effective solution to achieve zero error.