This paper deals with the impact of harmonic filters interactions in the aircraft grid, in particular, their influence on the control performance of each subsystem. The study has been carried out on a notional electrical system composed by two three-phase power converters a Voltage Source Inverter (VSI) and an Active Front End (AFE). The beginning of the paper presents the origin of the issue trend of reducing the filter size and weight, which is especially true in aircraft industry. Then, roles of the filter and their design challenges are discussed. Next part of the paper describes the controller constraints, its design and the control system modelling approach including specially developed simulation tool used for the interactions analysis. Simulation results with the experimental verification are presented showing the interactions impact on the system dynamics. Finally, optimization of the filters under dynamic control constraints considering systems components interaction presented as the simulation tool application.